Saturday, December 11, 2010
The Geoduck
The Geoduck is a species native to the Pacific Northwest. It is a very unusual animal – a large saltwater clam with a siphon that can reach over three feet in length and weigh up to fifteen pounds. “Geoduck” is a Lushootseed word that means “dig deep”. The Geoduck is an important part of coastal Native American aquaculture. It is also considered by some to be an aphrodisiac.
Geoducks are now harvested commercially and eaten all over the world. Bivalves are beneficial to our coasts, but we must ensure that the tides are clean and that we do not exploit the coasts when we grow Geoducks commercially. We can learn a lot from how the Native Americans fished, which was low-impact and environmentally friendly. This can be a challenge today though because our population has grown to over 300 million people in just a few hundred years. The Geoduck is a fascinating animal. Besides its interesting shape, it is one of the longest lived animals on Earth. The Geoduck can live over 150 years! Scientists believe this is because the animal has limited wear and tear on the body. Female Geoducks are also able to produce over a billion babies! The Geoduck is a truly unique animal and we should feel lucky that we share a home with it in our Puget Sound.
-Rachel Wright
Thursday, December 9, 2010
Sustainable Fish Farming
Scientists predict that the earth's population will peak at 10 billion, adding another 3 billion to the current population. Something has to feed these 3 billion mouths, the aquaculture industry is arguing it is them.
Global demand for fish is rising at a rate our ocean is incapable to support. Aquaculture is here to fill that gap. The industry provides nearly half of all the fish we consume, and it is going to spread to more areas and provide more fish for the days to come.
The downside is that fish farming itself is unsustainable. Fish farming makes fish feed out of smaller fish or fish oil and feed them to bigger caged fish. To raise a pound of farm raised fish, it sometimes takes several pounds of wild fish. Fish farming is adding pressure to the ocean rather easing it. Then there are the escaped fish. Fish escape is unpreventable and can turn into invasive species, devastating nearby habitat. It raises more concern that genetically modified salmon may soon be approved for farming. An alternate argument is that we are consuming more carnivorous fish not because of our increasing population but of our increasing wealth. Unless we can invent some vegetable feed for carnivorous fish, we need to eat more herbivore fish like Tilapia and Striped Bass.
One fact is for sure though: we need aquaculture, but only one that is sustainable and would leave behind usable water bodies for us.
http://www.nytimes.com/2010/10/28/business/energy-environment/28iht-rbobfish.html?pagewanted=1&_r=1&ref=fish_and_other_marine_life
http://www.bbc.co.uk/blogs/thereporters/richardblack/2009/03/theres_a_bit_of_a.html
-Tom Lee
Global demand for fish is rising at a rate our ocean is incapable to support. Aquaculture is here to fill that gap. The industry provides nearly half of all the fish we consume, and it is going to spread to more areas and provide more fish for the days to come.
The downside is that fish farming itself is unsustainable. Fish farming makes fish feed out of smaller fish or fish oil and feed them to bigger caged fish. To raise a pound of farm raised fish, it sometimes takes several pounds of wild fish. Fish farming is adding pressure to the ocean rather easing it. Then there are the escaped fish. Fish escape is unpreventable and can turn into invasive species, devastating nearby habitat. It raises more concern that genetically modified salmon may soon be approved for farming. An alternate argument is that we are consuming more carnivorous fish not because of our increasing population but of our increasing wealth. Unless we can invent some vegetable feed for carnivorous fish, we need to eat more herbivore fish like Tilapia and Striped Bass.
One fact is for sure though: we need aquaculture, but only one that is sustainable and would leave behind usable water bodies for us.
http://www.nytimes.com/2010/10/28/business/energy-environment/28iht-rbobfish.html?pagewanted=1&_r=1&ref=fish_and_other_marine_life
http://www.bbc.co.uk/blogs/thereporters/richardblack/2009/03/theres_a_bit_of_a.html
-Tom Lee
Wednesday, December 8, 2010
How does farmed salmon affect wild salmon?
Coho salmon |
According to a new study, wild salmon populations living near salmon farms have lower rates of abundance and survival than wild populations unexposed to the farms. Study authors Ford and Myers looked at five different salmonid species – pink, chum, coho, and Atlantic salmon, as well as sea trout. They studied populations of these fish living in Ireland, Wales, and Scotland, as well as Canadian populations in Newfoundland, New Brunswick, and British Columbia. They defined a wild salmon population as “exposed” if at least one fish farm discharged water into wild spawning grounds, or into a bay downstream from spawning grounds (where juvenile fish had a high likelihood of swimming by fish farms). In almost all cases, having a fish farm upstream dramatically reduced the chances that wild fish would return to their natal spawning grounds. In many cases the rate of return was less than 50%.
Some of the causes of this might be pollution or spread of parasites from the fish farms, or problematic interbreeding of escaped farmed fish with wild fish. Ford and Myers’ study shows that salmon farms have strong negative effects on nearby wild populations. Further research may show what factors cause these effects.
Sources:
-Ford, J., and Myers, R. (2008) A global assessment of salmon aquaculture impacts on wild salmonids. PLoS Biology 6(2): e33. doi:10.1371/journal.pbio.0060033
-Gross, L. (2008) Can Farmed and Wild Salmon Coexist? PLoS Biol 6(2): e46. doi:10.1371/journal.pbio.0060046
Posted by: Anne Accettullo
Tuesday, December 7, 2010
Cleaning System Eliminates Marine Growth Build up on Aquaculture Nets
Tuesday, 07 December 2010 12:11 |
HUGHES Pumps have claimed that their range of Aquaculture Net Cleaning Systems provide the first truly reliable way of removing marine growth from aquaculture nets in situ, giving exceptional levels of reliability, maximum productivity with very low levels of maintenance. The company says: “Aquaculture producers are only too aware that marine growth build up reduces the tidal flow of oxygen rich seawater through nets, limiting fish growth and increasing the possibility of disease. In severe cases the weight and additional drag of marine growth can damage nets, leading to a breakdown of the cage allowing predators in and fish to escape. “These revolutionary Aquaculture Net Cleaning Systems combine Hughes’ range of high pressure pump sets that bring a level of engineering and performance not seen before in the net cleaning market, with the unique range of Terminator net cleaners. “Traditional in-situ net cleaning systems are inherently inefficient, because the pumped high-pressure seawater is split between the net cleaning process and holding the cleaning discs in position, which can cut the high-pressure seawater available for net cleaning by around 50%. The Hughes Pumps range of Aquaculture Net Cleaning Systems allow the net cleaning system’s cleaning discs to be held against the net using only a small amount of the high-pressure seawater pumped to the cleaning heads. “The Hughes package, that combines the HPS2200 pump set and Terminator 9 disc net cleaner, has become the pump of choice among net cleaning contractors. This package is available in two versions; a conventional stand alone pumpset fitted with an acoustic canopy that is generally used from a workboat deck, and a marine engine driven version designed to be installed below deck, that uses seawater to cool the engine, making for a very compact installation.” -Katie |
Monday, December 6, 2010
Fisheries run out of room to expand
According to a new study by University of British Columbia scientists, humans have run out of room to expand our fisheries. Severe overfishing has occurred in the waters around Europe and North America, so every year since 1950 people have expanded fisheries to cover other parts of the ocean. Catches have been increasing, but this is at an unsustainable level. There has been a high ecological footprint. In the 1980s and 1990s, fisheries were expanding at the fastest rate, and in the late 1990s they began to stagnate. Today, there does not appear to be any more room for expansion. The open ocean and the continental shelves have been overfished to the point that many fish stocks are declining. The world’s overall catch of fish today is five times greater than it was in 1950, but it is unsustainable.
Overfishing at such a high level demonstrates one of the principles we learned about in class, Gifford Pinchot’s concept of nature as a resource. (In contrast to John Muir’s concept of nature as a place that should ideally stay wilderness.) However, Pinchot said that the resource should be managed so as to sustain production at a reasonable level. He would not agree with resources being depleted unsustainably. The latter is what is going on with the world’s fisheries.
I think that there are only a few solutions to overfishing. The most obvious one is to let fish stocks recover by drastically reducing our catch of the most overfished species. Another is to rely more on farmed fish. Or we could start eating more of certain species that people have not fished very much before. But any permanent fix probably will have to include the first idea of reducing catch. With a growing population, especially one being advised by health associations to eat more fish, this will be difficult.
Source: Swartz W, Sala E, Tracey S, Watson R, Pauly D (2010) The spatial expansion and ecological footprint of fisheries (1950 to present). PLoS ONE 5(12)
Posted by: Anne Accettullo
Overfishing at such a high level demonstrates one of the principles we learned about in class, Gifford Pinchot’s concept of nature as a resource. (In contrast to John Muir’s concept of nature as a place that should ideally stay wilderness.) However, Pinchot said that the resource should be managed so as to sustain production at a reasonable level. He would not agree with resources being depleted unsustainably. The latter is what is going on with the world’s fisheries.
I think that there are only a few solutions to overfishing. The most obvious one is to let fish stocks recover by drastically reducing our catch of the most overfished species. Another is to rely more on farmed fish. Or we could start eating more of certain species that people have not fished very much before. But any permanent fix probably will have to include the first idea of reducing catch. With a growing population, especially one being advised by health associations to eat more fish, this will be difficult.
People protesting overfishing in Kenya |
Source: Swartz W, Sala E, Tracey S, Watson R, Pauly D (2010) The spatial expansion and ecological footprint of fisheries (1950 to present). PLoS ONE 5(12)
Posted by: Anne Accettullo
Old widely-adopted method of measuring health of fisheries shown inaccurate
Example of a trophic pyramid for marine organisms. (Source: ScienceLearn.org, <http://www.sciencelearn.org.nz/Contexts/Life-in-the-Sea/Science-Ideas-and-Concepts/Marine-food-webs>)
- According to a team of scientists led by Trevor Branch of the University of Washington, the most used method of measuring the health of ocean ecosystems and fisheries yields accurate results only half the time.
- Science originally published the measurement method in 1998, which is based on the trends of fish at various trophic levels. The paper that was published said that based on catch data over 40 years, trophic level averages were falling. This led the researchers to believe that humans were taking a top-bottom approach to fishing; in other words, they thought humans were overfishing species at higher trophic levels first and then moving to lower trophic levels as the stocks became depleted.
- Now, new analyses have been developed that integrate and assess other factors besides average trophic levels of catches; these other factors include populations, catch data, and which species of fish live in the particular ecosystem being studied.
- With the new data, catches of species at higher trophic levels have actually increased rather than decreased (a decrease what would have been expected from fishing down the food web).
- The older measure of the health of fisheries ecosystems only works if there is top-down fishing rather than bottom-up fishing. For example, the assessment fails in Thailand because the fisheries in that area went after low-trophic level organisms like shrimp first and then moved to catching higher-level species later. The measure thus concluded that Thailand fisheries were healthy when in actuality the ecosystems were being overfished.
- Because we are catching more of everything in general, average trophic levels are not a good sole indicator of the health of an ecosystem, which is why the 1998 method of measurement fails half of the time.
Source:
"Scientists question indicator of fisheries health, evidence for 'fishing down food webs'". 17 Nov 2010. PhysOrg.com. <http://www.physorg.com/news/2010-11-scientists-indicator-fisheries-health-evidence.html>.
-- Erika Najarro
Lionfish Threatens the Keys
Lionfish, a venomous yet beautiful species that is kept and enjoyed by advance marine aquarium hobbyists, but they are not so appreciated in Florida Keys.
Lionfish is believed to have been releases in the Keys by hobbyists back in the 1990s, but the population exploded in the early 2000s. Lionfish has no natural predators but they pose significant threat to juveniles fish of practically all other species. They would consume almost every fish on the reef, and they have grown so dominant on the reef that they are barely afraid of humans which makes them much easier to kill.
Lionfish pose more threat than just to fish. By preying on juveniles fish and rapid breeding, they are threatening the area's commercial fishing and sightseeing business.
National Oceanic and Atmospheric Administration states that eradication of the species is near impossible and the only hope is local control. Divers at Florida Keys are encouraged to kill Lionfish. The Keys even created a new tournament called the Lionfish Derby. Participants simply kill as many Lionfish as possible. Besides good killing and good gaming, Lionfish is also good eating. Lionfish nuggets are excellent feast, and the Keys may soon promote Lionfish as a food source.
http://www.nytimes.com/2010/11/23/science/23lionfish.html?ref=fish_and_other_marine_life
http://video.nytimes.com/video/2010/11/22/science/1248069362582/an-exotic-predator-threatens-the-keys.html
By Tom Lee
Sunday, December 5, 2010
Europe Decides to Continue Deep-Sea Trawling
Illustration of how trawling nets work to catch fish. (Source: Greenpeace, http://www.greenpeace.org/raw/image_full/canada/fr/photosvideos/chalutage-fond-illustration.jpg)
- Despite pleas and former agreements from the United Nations General Assembly, nations in Europe have chosen to continue destructive trawling practices to catch fish and other sea life
- The Council of Fisheries Ministers reported that catch quotas would be more or less the same for European Union countries over the next two years; however, there will be some fishing restrictions for a few species
- Critics of the Council of Fisheries Ministers’ decision say that they are not holding to their commitment to help preserve ocean species and ecosystems
- Trawling involves large nets dragged along the seafloor by fishing vessels, catching everything it comes in contact with and destroying the seabed. When the nets are brought up onto the boats, unwanted bycatch, many either dead or dying at that point, is simply thrown back into the water.
- Problems related to trawling include:
o Overfishing
o Destruction of coral and vegetation on the seafloor
o Disruption of the ecosystems
o Decrease in overall size and population of species: deep-sea species take a long time to recover, as they tend to reproduce and mature at a slower rate
- According to a British study, commercial trawling has “a more negative impact on the seafloor than all other major human activities combined”
Source:
Jolly, David. "Shrugging Off Criticism, Europe Will Keep Trawling". 3 Dec 2010. The New York Times. <http://green.blogs.nytimes.com/2010/12/03/shrugging-off-criticism-europe-will-keep-trawling/>.
-- Erika Najarro
Thursday, December 2, 2010
Aquaculture within the US
Aquaculture in the United States
Additional domestic seafood production will reduce the nation’s dependence on imports. Right now, the United States is a major consumer of aquaculture products – we import 84% of our seafood and half of that is from aquaculture – yet we are a minor producer. U.S. aquaculture (freshwater and marine) supplies about 5% of the U.S. seafood supply and U.S. marine aquaculture less than 1.5%. Driven by imports, the U.S. seafood trade deficit has grown to over $9 billion annually – the highest it’s ever been.
Many other countries are investing more heavily in aquaculture than the United States. According to the United Nations Food and Agriculture Organization, the United States ranked 10th in total aquaculture production in 2004, behind China, India, Vietnam, Thailand, Indonesia, Bangladesh, Japan, Chile, and Norway. The United States imports significant volumes of marine aquaculture products from these and other countries, resulting in an annual seafood trade deficit of over $9 billion.
U.S. Marine Aquaculture
The U.S. marine aquaculture industry is relatively small compared with overall U.S. and world aquaculture production. Total U.S. aquaculture production is about $1 billion annually, compared to world aquaculture production of about $70 billion. Only about 20% of U.S. aquaculture production is marine species.The largest single sector of the U.S. marine aquaculture industry is molluscan shellfish culture (oysters, clams, mussels), which accounts for about two-thirds of total U.S. marine aquaculture production, followed by salmon (about 25 percent) and shrimp (about 10 percent). Current production takes place mainly on land, in ponds, and in coastal waters under state jurisdiction.
More info can be found on the NOAA website!
-Katie
Wednesday, December 1, 2010
Fish Farm on Land
Roughly three years ago, investor Efraim Bason and Joseph Mizrahi recognized the growing need for sustainable, eco-friendly yet profitable aquaculture, so they met up with a few marine biologists from Hebrew University of Jerusalem and started a new fish farm... on Land!
Two years ago, the duo opened the Local Ocean fish farm for business in Hudson, NY. The fish farm is aimed at self-contained, self-cleaning and barely need any infusion of new water. 70% of water is recirculated and the rest is treated for other use. They rise royal dorado, white sea bass, European sea bass at the farm but are looking forward to the addition of summer flounder, black sea bass and himachi by next fall. To ensure that they are not affecting the nature order in any ways, the company obtain their hatchlings from hatcheries. They also use solar design to power lighting and heating, and with underground tanks, gravity to power pumps. Local Ocean fish farm provides sustainable, unpolluted and above all, an affordable price for fresh fish to Hudson area.
-Tom Lee
Tuesday, November 30, 2010
Impacts of Fishing Practices on Atlantic Shark Populations
Oceanic white tip shark, one of 21 shark species found in the Atlantic Ocean. (Source: Encyclopedia of Life, http://www.eol.org/pages/213834)
- Over 1.3 million sharks are killed every year in the Atlantic due to fishing practices and poor management at the international level; many of these sharks are also endangered species.
- These findings were released at a meeting of the International Commission for the Conservation of Atlantic Tunas (ICCAT), which sets catch limits and focuses on maintaining sustainable fisheries.
- According to the International Union for the conservation of Nature (IUCN), populations of the oceanic white tip shark have gone down 70%; the hammerhead shark population, perhaps even worse off, has decreased by over 99%. 75% of Atlantic shark species are said to be “threatened with extinction”.
- Global concerns have primarily been about the Atlantic bluefin tuna, thus leaving shark populations relatively unmanaged.
- Some of the sharks are caught, get their fins cut off (often for Chinese culinary uses, where it is a delicacy), and then thrown back dead into the ocean; despite this practice being banned, loopholes have been found and fishermen continue to harvest shark fins. To reinforce the finning ban, the US suggested that sharks must be brought back to the shore whole if they are fished; this would also help monitor shark population levels better.
- Because sharks produce few offspring and take a long time to mature into adults, they can be hurt significantly by overfishing.
- Sharks are at the top of the food chain, so decreasing their numbers leaves organisms lower on the food chain unchecked, resulting in an unbalanced and unhealthy ecosystem.
Source:
Hood, Marlowe. "More than a million Atlantic sharks killed yearly: study." 22 Nov 2010. PhysOrg.com. <http://www.physorg.com/news/2010-11-million-atlantic-sharks-yearly.html>.
-- Erika Najarro
Wednesday, November 24, 2010
Decision Delayed on AquAdvantage Salmon
- The FDA has not yet made their decision whether to approve a new genetically modified fish called the AquAdvantage Salmon.
- These fish are intended for human consumption.
- Scientists from the AquaBounty company modified a natural Atlantic salmon. They added a growth-regulating gene from a quick-growing fish, the Ocean Pout. They also added a gene from Chinook salmon (from the Pacific Ocean) that also controls growth. As a result of these two genes, the new GM salmon grows to the same size as a normal salmon in half the time.
- In their presentation to the FDA, AquaBounty scientists argued that their fish would not disrupt the ecosystem. They plan to grow the AquAdvantage salmon only in inland tanks, not in outdoor enclosures.
- But what if, at some point, these salmon were raised in outdoor enclosures and some escaped? Would wild salmon populations be genetically contaminated? The answer is not known.
- All four species of Atlantic salmon are currently endangered. If GM salmon escaped to the Atlantic Ocean, they might outcompete the natural species to make them extinct.
- The risk of allergic reactions to GM salmon is not well understood. Some scientists say there is probably no risk. Professor Kevin Wells from the University of Missouri said, “This fish contains nothing that isn’t already in the human diet.” But others speculate there may be a slight risk of allergy for some people. Little is known about how to measure the potential risk.
- Besides the physical risks of human allergies and possible contamination of wild salmon populations, what could approving these GM fish mean for our species? It appears that our species will be developing a lot of biotechnology this century. Should humankind continue to pursue biotechnology? Will the benefits outweigh the risks? These are questions only philosophers and future generations could answer.
AquAdvantage salmon (above), normal salmon (below) |
Sources:
“FDA Committee Punts on question of biotech fish.” http://blogs.discovermagazine.com/80beats/2010/09/21/fda-committee-punts-on-question-of-biotech-fish/ Discover Magazine. 21 Sept 2010
“GM food battle moves to fish as super-salmon nears FDA approval.” http://www.guardian.co.uk/environment/2010/sep/26/gm-food-battle-salmon Jamie Doward, The Guardian. 26 September 2010
Briefing Packet on AquAdvantage Salmon. Food and Drug Committee on Veterinary Medicine. http://www.fda.gov/downloads/AdvisoryCommittees/CommitteesMeetingMaterials/VeterinaryMedicineAdvisoryCommittee/UCM224762.pdf September 20 2010. Accessed on Nov 22, 2010.
Posted by: Anne Accettullo
Tuesday, November 23, 2010
Damage to Vietnam Aquaculture
Highest tides in 23 years damage crops, aquaculture ponds
CA MAU — The highest tides in 23 years have damaged crops and aqua culture ponds on the southernmost Ca Mau Peninsula.
Ca Mau Province's Hydro-meteorological Forecasting Centre director Tran Tien Dung said high tides and heavy rain had swollen waters in coastal Nam Can District to 1.54 metres and 86 cm in Ca Mau City.
The province's Agriculture and Rural Development reports that sea water surged over dykes in the Dam Doi, Nam Can, Ngoc Hien, Phu Tan districts destroying more than 3,000 ha of shrimp and fish ponds.
About 5,000 ha of rice paddy and plantation was also flooded in the Thoi Binh, U Minh and Tran Van Thoi districts.
High tides from October to the middle of this month have damaged more than 15,800 ha and caused damage estimated at VND4.1 billion (US$210,000), reports provincial Irrigation Department director Nguyen Long Hoai.
Three days of high tides and heavy rain has also damaged 53,000 ha of farm land in neighbouring Bac Lieu province.
The province could lose 13,000 ha if the high tides continue, warns the provincial agriculture department.
The high tides, which are expected to continue until this weekend, submerged most of Nga Nam in Soc Trang Province.
The 1.6-million-ha peninsular Ca Mau Peninsular, on the southern tip of Viet Nam, includes Can Tho City and Hau Giang, Soc Trang, Bac Lieu and Ca Mau provinces as well as part of Kien Giang. — VNS
What could this mean for the future of positive developments in aquaculture and the estimated rising sea level damage??!
-Katie
Tuesday, November 16, 2010
Aquariums Are Good For Your Health
As college students, we feel a lot of stress around midterms. There's just so much to do! But, did you know that watching fish swim in an aquarium can reduce stress levels and lower blood pressure? Its true and its not only beneficial for college students pulling an all night study session. Patients with hypertension can greatly benefit from watching fish swim around in an aquarium. In this study, participants with both normal and high blood pressure were asked to read aloud, rest and look at fish. Look at the numbers:
Both groups of participants had the lowest blood pressure while watching the fish. Several studies going back to the 1980s support using an aquarium as a way to relax and lower blood pressure. Aquariums are soothing and bring on a state of calm. In western culture, many of us have lost our connection to nature. It is important for us to reconnect with the Earth; it is good for our health. The natural world is a thing of beauty and we should take time to appreciate its wonders.
You can read more about the benefits of owning an aquarium and other pets here.
-Rachel Wright
Both groups of participants had the lowest blood pressure while watching the fish. Several studies going back to the 1980s support using an aquarium as a way to relax and lower blood pressure. Aquariums are soothing and bring on a state of calm. In western culture, many of us have lost our connection to nature. It is important for us to reconnect with the Earth; it is good for our health. The natural world is a thing of beauty and we should take time to appreciate its wonders.
You can read more about the benefits of owning an aquarium and other pets here.
-Rachel Wright
Sunday, November 14, 2010
Small (and Cute) Fish Changing Feeding Behavior
Those of you familiar with oceanography are probably aware that small fish tend to avoid open area where predators lurk, even though open area usually has the most food. Only desperate, starving fish try their chances. There is not the case in the Line Islands. The Line Islands are a chain of coral islands located in the central Pacific Ocean and south of Hawaii. Two of the Line Islands are owned by and designated as no-fishing zones by the United States. Another three belong to the Republic of Kiribati. In protected islands, small fish exhibit their normal, avoiding rich seaweed bed where the predators lie. In the other three where there are human settlements and active fishing, feeding is more evenly spread across the seaweed bed. This is due to the lack of predators to scare the small fish away. Our impact doesn't stop at the feeding pattern. When small fish feeds on seaweed, they create space for coral to grow. If fishery in these islands is sustainable, there should be enough predators (shark, tuna and etc.) to keep pressure off the central seaweed bed. With unsustainable fishery, we are not just endangering top predators, we are also changing the behavior of small fish and coral growth.
Here is the full article if anyone is interested
-Tom (Tsz Hang) Lee
Tuesday, November 9, 2010
Interview with Richard Strickland
Richard Strickland taught Oceanography for years here at the UW. He won the Distinguished Achievement in Lifetime Learning Award in 2002. He's agreed to give us this exclusive interview.
I originally wanted to be an astronaut, or at least design planes &
rockets. I was in college studying aerospace engineering in 1970. I took
an oceanography class and found it much more interesting, and all my
credits transferred, so I switched majors, even becoming a biologist. It
was the depth of the "Boeing Bust" anyway so I didn't look like there
would be jobs in aerospace. Later I found out how seasick I get :(
Pollution of the oceans doesn't really make global warming worse, if
that's what you mean. But it does combine with the effects of warming.
Chemical pollution is a problem but not a serious one in most of the open
ocean (the "garbage patches" in the centers of the N. Pacific & N.
Atlantic are a bad problem for the organisms there). Chemical pollution is
significant in coastal harbors such as Puget Sound, it reduces both the
abundance of seafood species and their safety for consumption by humans.
It is being managed but is not yet fully controlled, much less cleaned up.
Warming appears to be causing some species to decline (cod, a cold-water
fish, has disappeared from Puget Sound, for example) and will almost
certainly cause many more such declines in coming decades. Its related
problem, acidification, may be even more serious. Warming, acidification,
and local degradation may wipe out most coral reefs worldwide during the
first half of this century.
The state and federal governments have set an example in the recent
management of Alaskan fisheries. It takes careful unbiased research,
strong enforcement, and honest participation and support from the
industry. Two recent trends, setting aside no-harvest refuge areas and
assigning individual rather than fleet-wide fishing quotas, are sensible
approaches to improve the rationality of fishery management. I'm afraid
there is no alternative to police tactics when it comes to renegade
fishing.
I am not a hunter and I wish they didn't want to hunt whales in the modern
world (clearly the hunt was important in original native cultures). The
modern hunt in Washington (unlike northern Alaska) has been for ceremonial
purposes rather than subsistence. However, the West Coast gray whale
population, which is the target species in Washington, as a whole is not
endangered any more (it became endangered because of industrial, not
native whaling). I'm not sure whether we immigrants have a moral right to
govern the native hunt, even though we have the political & legal power. I
am a supporter of tribal rights in general, so I believe as long as the
hunt is conducted consistent with good conservation practices, it should
be legal.
Anthropogenic carbon dioxide causing warming & acidification
I hope you enjoyed that and thanks again to Richard Strickland for the interview!
-Rachel Wright
What made you decide to chose a career in Oceanography?
I originally wanted to be an astronaut, or at least design planes &
rockets. I was in college studying aerospace engineering in 1970. I took
an oceanography class and found it much more interesting, and all my
credits transferred, so I switched majors, even becoming a biologist. It
was the depth of the "Boeing Bust" anyway so I didn't look like there
would be jobs in aerospace. Later I found out how seasick I get :(
How serious is pollution in the Ocean? How does that worsen the effects of
Global Warming?
Global Warming?
Pollution of the oceans doesn't really make global warming worse, if
that's what you mean. But it does combine with the effects of warming.
Chemical pollution is a problem but not a serious one in most of the open
ocean (the "garbage patches" in the centers of the N. Pacific & N.
Atlantic are a bad problem for the organisms there). Chemical pollution is
significant in coastal harbors such as Puget Sound, it reduces both the
abundance of seafood species and their safety for consumption by humans.
It is being managed but is not yet fully controlled, much less cleaned up.
Warming appears to be causing some species to decline (cod, a cold-water
fish, has disappeared from Puget Sound, for example) and will almost
certainly cause many more such declines in coming decades. Its related
problem, acidification, may be even more serious. Warming, acidification,
and local degradation may wipe out most coral reefs worldwide during the
first half of this century.
What should be done to reduce overfishing?
The state and federal governments have set an example in the recent
management of Alaskan fisheries. It takes careful unbiased research,
strong enforcement, and honest participation and support from the
industry. Two recent trends, setting aside no-harvest refuge areas and
assigning individual rather than fleet-wide fishing quotas, are sensible
approaches to improve the rationality of fishery management. I'm afraid
there is no alternative to police tactics when it comes to renegade
fishing.
How do you feel about about Native American rights to whaling?
I am not a hunter and I wish they didn't want to hunt whales in the modern
world (clearly the hunt was important in original native cultures). The
modern hunt in Washington (unlike northern Alaska) has been for ceremonial
purposes rather than subsistence. However, the West Coast gray whale
population, which is the target species in Washington, as a whole is not
endangered any more (it became endangered because of industrial, not
native whaling). I'm not sure whether we immigrants have a moral right to
govern the native hunt, even though we have the political & legal power. I
am a supporter of tribal rights in general, so I believe as long as the
hunt is conducted consistent with good conservation practices, it should
be legal.
And finally, what is the single biggest threat to ours Oceans today?
Anthropogenic carbon dioxide causing warming & acidification
I hope you enjoyed that and thanks again to Richard Strickland for the interview!
-Rachel Wright
Saturday, November 6, 2010
Not Quite the Chicken of the Sea
Did you know that some species of tuna can weigh over 1,000 pounds? They are also fast swimmers, reaching speeds up to 40 miles per hour! Tuna are also over-fished and some species may die out if we continue to exploit them (especially the blue fin tuna). Did you know that humans have been consuming canned tuna for over 100 years? Commercial fishing has dramatically reduced populations and we need to act now if we want to prevent this species from going extinct. Japan is the largest consumer of tuna and has been accused of harvesting more tuna than is legally allowed. Over-fishing is bad for the entire ecosystem. Pollution is also a problem. Tuna can contain high levels of mercury, which is not safe to eat. Pregnant women are advised not to eat tuna and other predatory fish for this reason. It is important that we make sure the food we are eating is safe and sustainable. The next time you want a tuna fish sandwich, consider PB&J instead.
-Rachel Wright
-Rachel Wright
Friday, November 5, 2010
Exiciting Opportunity at the Seattle Aquarium
Family Science Weekend
November 13-14
Exploring science can be fun! Bring the whole family to meet scientist from the Aquarium, NOAA and the University of Washington. Learn about research that we are doing right here in Puget Sound and get a hands-on understanding of what scientists are trying to discover.
Exploring science can be fun! Bring the whole family to meet scientist from the Aquarium, NOAA and the University of Washington. Learn about research that we are doing right here in Puget Sound and get a hands-on understanding of what scientists are trying to discover.
The Seattle Aquarium works with the University of Washington to preserve several species in the Puget Sound. I've visited them myself a few times and its very fun. Family Science Weekend is a great opportunity for Ocean lovers of all ages to see hundreds of aquatic animals and fish and learn about our very own Puget Sound. Adult tickets are $17, Youth are $11 and under age four is free.
Click here for directions.
Click here for directions.
COMING SOON
Richard Strickland, former Oceanography Professor here at the UW will be giving us an exclusive interview!
Are you eating the right fish??
It's important to keep up-to-date on the ecofriendly fish, although it's sometimes hard to distinguish between the eco-best and eco-ok categories when you are grocery shopping. Also, it's hard to understand, why are some things only "eco-ok"?
-Katie
Wednesday, November 3, 2010
Makah Whaling Rights: A Summary
- The Makah Indians live on the northwestern corner of the Olympic Peninsula, including Neah Bay.
- They have hunted whales there for thousands of years.
- The Makah are the only Native American people to have whaling rights explicitly granted to them (in 1855 Treaty of Neah Bay). Whaling and fishing rights were given to them in exchange for the release of most of their ancestral lands to the federal government.
- In the 1920s, American commercial fishing had decimated the gray whale population. Hunting gray whales was banned until after 1994, when they were taken off the Endangered Species List.
- In the 1970s, an ancient Makah village was unearthed in Ozette. It had been covered by a mudslide 2000 years ago. Thousands of whaling-related artifacts were discovered, and these renewed the interest of many Makah in whaling.
- The Makah Nation asked for, and was granted, a quota of 5 whales per year from the International Whaling Commission.
- In 1999, the Makah hunted their first whale in over 70 years.
- Whales taken by the Makah Nation can only be used for the tribe’s subsistence hunting. They cannot be sold.
- Killing mother whales or calves is not allowed.
- Overall, Makah whaling is governed by tribal, federal, and international law.
Makah whalers circa 1930, photo by Asahel Curtis |
Sources:
Posted by: Anne Accettullo
Aquaponic: A Fish Farm that Won't Harm Planet Earth
Let's divert our attention from the harsh reality that is whaling and the big bad wolf, and focus on something new, okay, not so new, but at least positive and shiny: aquaponic.
Aquaponic is and I quote, "a combination of aquaculture, or fish cultivation, and hydroponics, or water-based planting — utilizes a symbiotic relationship between fish and plants." Essentially, aquaponic is a fish farm with plants, worms and fish. Plants provide water filtration for fish and food for worms, and the worms, in turn, become food for the fish. To complete the cycle of life, fish waste becomes nutrient to plants, supporting its growth. Aquaponic is practically a miniature ecosystem that happens to be sustainable.
The article I read, "Fish Farms, With a Side of Green," named a few places with aquaponic, but the most impressive one is Barbados. Barbados is an island nation in the western North Atlantic Ocean and east of the Caribbean Sea. Long story short, Barbados is in the middle of nowhere and imports majority of her food. However, in today's world (in my opinion), with the price of oil above the roof and unsustainable farming, importation just doesn't work in the long run. Imagine what Barbados can do if she is self-sustainable. I mean, not everyone likes to have fish on the menu on a daily menu, but it is definitely more economically viable. Of course, this is just me talking and I am no expert on economy.
And guess what, aquaponic is not invented by the modern world. The Aztecs actually had been planting in fish ponds centuries before we did. Who would have thought, right?
Here is the link to the article if anyone is interested.
-Tom (Tsz Hang) Lee
Monday, October 25, 2010
Whaling: Why is Japan the Main Focus?
Usually, when the topic of whaling is brought up, the pro-whaling country that would come to mind most often is Japan, whose current total catch numbers are around 1,000 whales per year. Doing an internet search on "whaling" yields numerous articles on Japan's whaling industry and the criticism the nation faces for its actions.
But what about the other whaling countries? Norway and Iceland are big participators of commercial whaling; why don't we hear as much about them? Is it really fair that Japan must handle most of the criticism while the others do not?
The following article brings up these issues and provides a few reasons why Japan might be viewed as the "face of whaling".
"Why Is Japan Whaling's Bogeyman When Norway Hunts Too?"
-- Erika Najarro
But what about the other whaling countries? Norway and Iceland are big participators of commercial whaling; why don't we hear as much about them? Is it really fair that Japan must handle most of the criticism while the others do not?
The following article brings up these issues and provides a few reasons why Japan might be viewed as the "face of whaling".
"Why Is Japan Whaling's Bogeyman When Norway Hunts Too?"
-- Erika Najarro
Sunday, October 24, 2010
Did You Know? Some Facts About Whaling
- According to the Humane Society, there is no way to humanely kill a whale. Whales suffer a tremendous amount of pain when they are hunted.
- Whales are intelligent and they live in families just like we do. Whales grieve when they lose a family member.
- No one will go hungry if we stop hunting whales. There are plenty of other food sources.
- Currently, there are only 20,000 humpback whales in the ocean. Before commercial whaling, that number may have been as high as 1.5 million (Greenpeace).
- Whale blubber often contains PCBs and pesticides from the pollution in the ocean. Why would anyone want to eat toxic waste (Greenpeace)?
- There is no reason to kill whales for scientific research. They can be studied in their own environment without human interference. We can learn much more by observing live whales in their natural habitat.
- Whales cannot produce until they are 7 to 14 years of age. They cannot replenish themselves quickly like some other species (Whale-World). This is on reason why whaling has depleted the population so severely.
- Whales are a part of human culture. They are very important to many American Indian Tribes and are even mention in the Bible (Jonah and the whale). Humans would regret losing the whale if it became extinct.
- Humans and whales have a lot in common. We both inhabit several areas around the globe and we both travel around the world. We are also very social creatures.
- Whales have been around for over 55 million years (Whale-World), while humans have only been around for 100,000. What gives us the right to destroy a species that has been around for so long?
U.S. Leads New Bid to Phase Out Whale Hunting
U.S. Leads New Bid to Phase Out Whale Hunting
WASHINGTON — The United States is leading an effort by a handful of antiwhaling nations to broker an agreement that would limit and ultimately end whale hunting by Japan, Norway and Iceland, according to people involved with the negotiations.
The compromise deal, which has generated intense controversy within the 88-nation International Whaling Commission and among antiwhaling activists, would allow the three whaling countries to continue hunting whales for the next 10 years, although in reduced numbers.
In exchange, the whaling nations — which have long exploited loopholes in an international treaty that aims to preserve the marine mammals — would agree to stricter monitoring of their operations, including the placing of tracking devices and international monitors on all whaling ships and participation in a whale DNA registry to track global trade in whale products.
Officials involved in the negotiations expressed tentative hope that they could reach an agreement in coming weeks. But ratification by the overall group remains uncertain.
“This is one of the toughest negotiations I’ve been involved in in 38 years,” said Cristián Maquieira, the veteran Chilean diplomat who is the chairman of the commission. “If this initiative fails now, it means going back to years of acrimony.”
Some pro-whale activists say the deal would grant international approval for the continued slaughter of thousands of minke, sei and Bryde’s whales. They also say that the agreement does not prevent Japan and the other nations from resuming unlimited whaling once the 10-year period is up.
“From our point of view, it’s a whaler’s wish list,” said Patrick R. Ramage, global whale program director at the International Fund for Animal Welfare. “It would overturn the ’86 moratorium, eviscerate the South Ocean Whale Sanctuary, subordinate science and I.W.C. precedent to reward countries that have refused to comply by allocating quotas to those three countries.”
“Rather than negotiate a treaty that brings commercial whaling to an end,” he concluded, “they have created a system under which it will continue.”
But Monica Medina, the No. 2 official at the National Oceanic and Atmospheric Administration and the American delegate to the whaling body, said that Mr. Ramage and other critics were demanding a complete halt to whaling, an impossible goal, at least today.
“We can’t stop it; we can only try to control it,” Ms. Medina said in an interview.
“If we can prevent thousands of whales from being hunted and killed, that’s a real conservation benefit. This proposal would not only help whales, we hope, but also introduce rigorous oversight, halt the illegal trade in whale meat and bring respect for international law back to the I.W.C.,” she added. “Are we there yet? We’re not, and we have hard negotiations to go yet.”
Despite a 1986 international moratorium on commercial whaling, the numbers of whales killed annually has been rising steadily, to nearly 1,700 last year from 300 in 1990, as the three whaling nations have either opted out of the treaty or claimed to be taking whales only for legitimate scientific study. Most of the meat from the slaughtered whales is consumed in those three countries, although there appears to be a growing international black market in whale products.
Some officials warn that if this effort at compromise fails, the commission’s efforts to police whale hunting, long crippled by irreconcilable political divisions, will collapse.
“The I.W.C. is a mess. It’s a dysfunctional international organization,” said Sir Geoffrey Palmer, a former prime minister of New Zealand and chairman of the I.W.C. group trying to negotiate a deal. “I think this is probably the last chance the I.W.C. has to cure itself.”
Representatives to the whaling commission from more than a dozen nations — including the three whaling countries and New Zealand, Australia, Chile and other nations backing the compromise proposal — are in Washington this week to negotiate terms of the agreement, which would protect as many as 5,000 whales from hunting over the next decade, officials said. They said they hoped that the reduced hunt would give whale stocks time to recover and give negotiators time to write a new treaty that would bring an effective international ban on all commercial whaling.
The group plans to release a new draft of the compromise proposal next week, but it still must win the approval of three-quarters of the members of the whaling commission at its annual meeting in Agadir, Morocco, in late June.
The Japanese, who killed 1,001 whales last year, are the linchpin of any deal. Although the Japanese taste for whale meat is steadily declining, the Japanese see their ability to continue to hunt whales, not only in their coastal waters but in the open ocean around Antarctica, as a question of sovereignty. Critics say that the practice survives only with heavy government subsidies. But a single whale can bring as much as $100,000 in Japanese fish markets. Japan is driving a hard bargain to demonstrate strength at home and perhaps to use as leverage in other international negotiations, officials involved in the talks said.
Joji Morishita, a senior official of the Japan Fisheries Agency and Tokyo’s representative to the whaling talks, said in a brief telephone interview that he was not authorized to discuss his country’s negotiating position. But he confirmed that Japan was at least willing to talk about a new whaling program that may result in a substantial reduction in its whale harvest over the next decade.
“We are fully engaged in this process,” he said.
Populations of some whale species have been growing since the moratorium ended decades of uncontrolled hunting, but whales around the world remain under threat, not only from hunting but also from ship strikes, pollution, habitat loss, climate change and entanglement in fishing nets.
Under terms of the compromise deal, which is being negotiated behind closed doors and remains subject to major changes, the three whaling nations agree to cut roughly in half their annual whale harvest. That would result in the saving of more than 5,000 whales over the next 10 years, compared with continued whaling at current levels.
The deal also proposes that no new countries be permitted to take whales, whale-watching ships would be monitored by the whaling commission and all international trade in whale products be banned.
In addition, whalers would have to report the time of death and means of killing of all whales and provide DNA samples to a central registry to help track the end use of the dead animals.
Limited subsistence whaling by indigenous peoples in the United States, Greenland, Russia and St. Vincent and the Grenadines would be allowed to continue.
“Our goal is a significant reduction in the number of whales killed, but some limited whaling will be authorized as a price for that,” said Mr. Maquieira, the whaling commission chairman. “This is highly controversial and very difficult. I would prefer something different, but there is nothing out there.”
***************************
In this article, it mentions that the practice of whaling will continue but there will be restrictions set forth so that it can be better controlled and monitored more precisely. I found the statistics that were presented in the article to be disturbing, such as the Japanese killing 1,001 whales last year alone. It is mentioned throughout the article that the I.W.C. is in short, unreliable, which prompts me to ask what can be done to strengthen the I.W.C.'s mission statement? Will any of the implementations above help the I.W.C succeed?
-Salome Wubeshet
Addition background information on the I.W.C.
WASHINGTON — The United States is leading an effort by a handful of antiwhaling nations to broker an agreement that would limit and ultimately end whale hunting by Japan, Norway and Iceland, according to people involved with the negotiations.
The compromise deal, which has generated intense controversy within the 88-nation International Whaling Commission and among antiwhaling activists, would allow the three whaling countries to continue hunting whales for the next 10 years, although in reduced numbers.
In exchange, the whaling nations — which have long exploited loopholes in an international treaty that aims to preserve the marine mammals — would agree to stricter monitoring of their operations, including the placing of tracking devices and international monitors on all whaling ships and participation in a whale DNA registry to track global trade in whale products.
Officials involved in the negotiations expressed tentative hope that they could reach an agreement in coming weeks. But ratification by the overall group remains uncertain.
“This is one of the toughest negotiations I’ve been involved in in 38 years,” said Cristián Maquieira, the veteran Chilean diplomat who is the chairman of the commission. “If this initiative fails now, it means going back to years of acrimony.”
Some pro-whale activists say the deal would grant international approval for the continued slaughter of thousands of minke, sei and Bryde’s whales. They also say that the agreement does not prevent Japan and the other nations from resuming unlimited whaling once the 10-year period is up.
“From our point of view, it’s a whaler’s wish list,” said Patrick R. Ramage, global whale program director at the International Fund for Animal Welfare. “It would overturn the ’86 moratorium, eviscerate the South Ocean Whale Sanctuary, subordinate science and I.W.C. precedent to reward countries that have refused to comply by allocating quotas to those three countries.”
“Rather than negotiate a treaty that brings commercial whaling to an end,” he concluded, “they have created a system under which it will continue.”
But Monica Medina, the No. 2 official at the National Oceanic and Atmospheric Administration and the American delegate to the whaling body, said that Mr. Ramage and other critics were demanding a complete halt to whaling, an impossible goal, at least today.
“We can’t stop it; we can only try to control it,” Ms. Medina said in an interview.
“If we can prevent thousands of whales from being hunted and killed, that’s a real conservation benefit. This proposal would not only help whales, we hope, but also introduce rigorous oversight, halt the illegal trade in whale meat and bring respect for international law back to the I.W.C.,” she added. “Are we there yet? We’re not, and we have hard negotiations to go yet.”
Despite a 1986 international moratorium on commercial whaling, the numbers of whales killed annually has been rising steadily, to nearly 1,700 last year from 300 in 1990, as the three whaling nations have either opted out of the treaty or claimed to be taking whales only for legitimate scientific study. Most of the meat from the slaughtered whales is consumed in those three countries, although there appears to be a growing international black market in whale products.
Some officials warn that if this effort at compromise fails, the commission’s efforts to police whale hunting, long crippled by irreconcilable political divisions, will collapse.
“The I.W.C. is a mess. It’s a dysfunctional international organization,” said Sir Geoffrey Palmer, a former prime minister of New Zealand and chairman of the I.W.C. group trying to negotiate a deal. “I think this is probably the last chance the I.W.C. has to cure itself.”
Representatives to the whaling commission from more than a dozen nations — including the three whaling countries and New Zealand, Australia, Chile and other nations backing the compromise proposal — are in Washington this week to negotiate terms of the agreement, which would protect as many as 5,000 whales from hunting over the next decade, officials said. They said they hoped that the reduced hunt would give whale stocks time to recover and give negotiators time to write a new treaty that would bring an effective international ban on all commercial whaling.
The group plans to release a new draft of the compromise proposal next week, but it still must win the approval of three-quarters of the members of the whaling commission at its annual meeting in Agadir, Morocco, in late June.
The Japanese, who killed 1,001 whales last year, are the linchpin of any deal. Although the Japanese taste for whale meat is steadily declining, the Japanese see their ability to continue to hunt whales, not only in their coastal waters but in the open ocean around Antarctica, as a question of sovereignty. Critics say that the practice survives only with heavy government subsidies. But a single whale can bring as much as $100,000 in Japanese fish markets. Japan is driving a hard bargain to demonstrate strength at home and perhaps to use as leverage in other international negotiations, officials involved in the talks said.
Joji Morishita, a senior official of the Japan Fisheries Agency and Tokyo’s representative to the whaling talks, said in a brief telephone interview that he was not authorized to discuss his country’s negotiating position. But he confirmed that Japan was at least willing to talk about a new whaling program that may result in a substantial reduction in its whale harvest over the next decade.
“We are fully engaged in this process,” he said.
Populations of some whale species have been growing since the moratorium ended decades of uncontrolled hunting, but whales around the world remain under threat, not only from hunting but also from ship strikes, pollution, habitat loss, climate change and entanglement in fishing nets.
Under terms of the compromise deal, which is being negotiated behind closed doors and remains subject to major changes, the three whaling nations agree to cut roughly in half their annual whale harvest. That would result in the saving of more than 5,000 whales over the next 10 years, compared with continued whaling at current levels.
The deal also proposes that no new countries be permitted to take whales, whale-watching ships would be monitored by the whaling commission and all international trade in whale products be banned.
In addition, whalers would have to report the time of death and means of killing of all whales and provide DNA samples to a central registry to help track the end use of the dead animals.
Limited subsistence whaling by indigenous peoples in the United States, Greenland, Russia and St. Vincent and the Grenadines would be allowed to continue.
“Our goal is a significant reduction in the number of whales killed, but some limited whaling will be authorized as a price for that,” said Mr. Maquieira, the whaling commission chairman. “This is highly controversial and very difficult. I would prefer something different, but there is nothing out there.”
***************************
In this article, it mentions that the practice of whaling will continue but there will be restrictions set forth so that it can be better controlled and monitored more precisely. I found the statistics that were presented in the article to be disturbing, such as the Japanese killing 1,001 whales last year alone. It is mentioned throughout the article that the I.W.C. is in short, unreliable, which prompts me to ask what can be done to strengthen the I.W.C.'s mission statement? Will any of the implementations above help the I.W.C succeed?
-Salome Wubeshet
Addition background information on the I.W.C.
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