Navigation Links
Scientists discover global pattern of big fish diversity in open oceans

once the world's most diverse area for species of tuna and billfish ?and an important tuna spawning ground. Now it is indistinguishable from the rest of the ocean.

The loss of diversity means that where fishermen might have once caught 10 different species in an area on average, now they catch only five. "It's not yet extinction; it's local fishing out of species," says Myers. "Where you once had a range of a species in dense numbers, now you might catch one or two of a certain species."

While other studies have looked at local or regional populations of fish over time, it has been difficult to discern the underlying cause of decreases or increases of catch. This study is the first to step back to examine climate impacts and fishing in unison at a global scale. It shows that environmental changes affect fish populations year-to-year, but overfishing is the primary driver of long-term declines in the variety of big fish.

"This study brings to the surface something that was buried," says Daniel Pauly, a fisheries biologist from the University of British Columbia Fisheries Centre. "The long-term trend of decline is not discernable at first because there are lots of things happening ?like the short-term effects of El Nino."

"We know there are decadal patterns in climate and ocean ecosystems," adds Nathan Mantua of the University of Washington's Climate Impact Group. "If this were the only factor, we might expect declines to be quickly reversible. What they've shown here is that we're on a curvy one-way street, with clear trends towards a reduction in biodiversity. There is real cause for alarm here."

Scientists say losing the variety of fish does not bode well for the future health of open oceans. A robust portfolio of different species is a key to maintaining our supply of fish in the long term and the ability of these living resources to rebound from environmental changes.

Open Ocean Hotspots

Coral reefs have lo
'"/>

Source:SeaWeb


Page: 1 2 3 4 5

Related biology news :

1. Scientists ID molecular switch in liver that triggers harmful effects of saturated and trans fats
2. Scientists Replicate Hepatitis C Virus in Laboratory
3. Scientists detect probable genetic cause of some Parkinsons disease cases
4. Scientists find missing enzyme for tuberculosis iron scavenging pathway
5. Scientists seek answers on what activates deadly anthrax spores
6. Yale Scientists Find MicroRNA Regulates Ras Cancer Gene
7. Scientists collaborate to assess health of global environment
8. Scientists decipher genome of fungus that can cause life-threatening infections
9. Scientists discover the cellular roots of graying hair
10. Scientists rid stem cell culture of key animal cells
11. Scientists develop new color-coded test for protein folding
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Scientists discover global pattern big fish diversity open oceans

(Date:4/20/2014)... corn crop residue to make ethanol and other biofuels ... than gasoline, according to a study published today in ... findings by a University of Nebraska-Lincoln team of researchers ... to meet federal mandates to ramp up ethanol production ... the stalks, leaves and cobs in cornfields after harvest ...
(Date:4/18/2014)... while feeding a world population predicted to reach ... approach to conservation that considers human-altered landscapes such ... and the natural habitat that supports it might ... where at least three-quarters of the land surface ... is vulnerable to human-caused impacts such as climate ...
(Date:4/18/2014)... soon as they,re planted may be good news for a ... the wild, a plant whose seeds sprouted at the first ... just an insurance policy against late frosts or unexpected dry ... too: Plants whose seeds put off sprouting until conditions ... a team of researchers working at the National Evolutionary Synthesis ...
Breaking Biology News(10 mins):Study casts doubt on climate benefit of biofuels from corn residue 2Study casts doubt on climate benefit of biofuels from corn residue 3Stanford researchers rethink 'natural' habitat for wildlife 2Stanford researchers rethink 'natural' habitat for wildlife 3Stanford researchers rethink 'natural' habitat for wildlife 4Plants with dormant seeds give rise to more species 2
... thrills among fossil collectors than a complete trilobite. These ... went extinct more than 250 million years ago, ... rare instances, an entire population of trilobites is found ... environment and behavior in these mass graves. Brett, ...
... the mechanical strength of cancer cell mucus layers provides ... suggests why some cancer cells are more resistant to ... of engineering at Northeastern University, Boston, Mass. ... protect against infection. Cancer cells, however, produce far more ...
... release is available in Spanish . ... growers find a replacement for methyl bromide are studying an ... ingredients. Researchers with USDA,s Agricultural Research Service (ARS) are ... microbial activity could be used to replace the popular fumigant. ...
Cached Biology News:Fossils record ancient migrations and trilobite orgies 2Breaking the mucus barrier unveils cancer cell secrets 2Alternatives eyed for methyl bromide 2
(Date:1/15/2014)... laureate Herbert Kroemer famously observed, referring to the ... where layers of different materials meet. In today,s ... of metal oxides are becoming increasingly prominent, with ... superconductors, ferroelectrics and multiferroics. Realizing the vast potential ...
(Date:1/15/2014)... Cynvenio, a cancer diagnostics company focused ... analysis of tumor cells in the bloodstream, today announced ... decision support application powered by CollabRx, Inc. , ... test, Therapy Finder will provide breast cancer patients and ...
(Date:1/15/2014)... More than 5 million Americans are ... 3 seniors will die with Alzheimer’s or another dementia, ... have shocked many Americans into looking for ways to ... tragic age-related cognitive disorders. Jonathan Weisman, president of Biohack ...
(Date:1/15/2014)... 2014 Freeslate, Inc ., the ... that Lupin Limited, one of India’s top five pharmaceutical ... PharmD System for high throughput solid form screening. ... on a wide range of quality, affordable generic and ...
Breaking Biology Technology:A deeper look at interfaces 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3
... Alberta Centre for Advanced,MNT (Microsystems and Nanotechnology) Products ... Yallup as Chief Technology Officer. In this new,role ... within ACAMP to,build a world-class capability in Alberta ... technology devices, turning them into market-ready,commercial or industrial ...
... are not risk takers with their health, yet up to ... screenings,- 42 percent are at elevated risk for cardiovascular events, yet 20 percent, ... ... MORRISTOWN, N.J., Sept. 22 A new survey of men and,women age 40 ...
... F. Finn, Jr.,C.P.A. ("Finn"), Assignee of the assets of ... that all oral drug delivery,intellectual property will be sold ... The three presentations were:, 1. BIOROD -- ... Affecting the Bioadhesion Performance of,Spheromer III, 3. Pharmacokinetics ...
Cached Biology Technology:Chief Technology Officer Joins ACAMP 2Risky Business: New Survey Suggests Many Americans Live Dangerously, Even When They Say They Aren't 'Risk Takers' 2Risky Business: New Survey Suggests Many Americans Live Dangerously, Even When They Say They Aren't 'Risk Takers' 3Risky Business: New Survey Suggests Many Americans Live Dangerously, Even When They Say They Aren't 'Risk Takers' 4Risky Business: New Survey Suggests Many Americans Live Dangerously, Even When They Say They Aren't 'Risk Takers' 5Risky Business: New Survey Suggests Many Americans Live Dangerously, Even When They Say They Aren't 'Risk Takers' 6Risky Business: New Survey Suggests Many Americans Live Dangerously, Even When They Say They Aren't 'Risk Takers' 7Spherics, Inc. Presented Three Key Technologies (BIOROD(TM), BIOGIT(TM), and SPHEROMER(TM)) at the 35th Annual Meeting of Controlled Release Society 2
... cocktail of 3 siRNAs specifically targeted to ... popular product. The siTrio reagent guarantees you ... target gene when used under standard conditions ... of optimal transfection with one of B-Bridges ...
... Corticosterone kit is a competitive enzymeimmunoassay (EIA) ... mouse or rat serum or plasma. Corticosterone ... in rats and mice, and in most ... reptiles. Most mammals produce both corticosterone and ...
... This is a molecular screening, low melting ... molecular sieving. It is recommended for separation ... size such as PCR products. Micro ABgarose ... is not recommended for blotting techniques. At ...
Rabbit polyclonal to P5 ( Abpromise for all tested applications). entrezGeneID: 10954 SwissProtID: Q14554...
Biology Products: