Navigation Links
Climate change causing significant shift in composition of coastal fish communities
Date:6/26/2008

the food web resulting in more of the productivity being consumed in the water column," Collie explained. "Phytoplankton are increasingly being grazed by zooplankton, which are then eaten by planktivorous fish, rather than the phytoplankton sinking to the bottom and being consumed by bottom fish. It's a rerouting of that production from the bottom to the top."

Collie noted that the increase in the numbers of lobsters and crabs is a result of their taking advantage of the benthic habitat abandoned by the bottom-feeding fish species.

Overall, the survey analysis found huge changes in the abundance of some species. Butterfish and bluefish, for instance, have increased in abundance by a factor of about 100 times while cunner has decreased by almost 1,000 times.

The analysis also found that while the total number of fish caught in each trawl increased over time, peaking in the 1990s, the size of those fish decreased.

"While we're catching more fish now, we're also catching smaller fish," said Collie, "and that corresponds with how the preferred temperatures of the fish here have changed. The fish community now is dominated by warm-water adapted species compared with what we started with, and fish that live in warmer water are smaller."

Collie added that fishing may also be a factor in the decline in fish size, since fishing removes the largest individuals from a population while leaving the smaller ones. However, he believes that climate is "the dominant signal." Sea surface temperature in the area of the trawls has increased by 2 degrees Centigrade since 1959, and the preferred temperature of the fish caught in the trawls has also increased by 2 degrees C.

"That seems to be direct evidence of global warming," he said. "It's hard to explain any other way."

The shift in species composition also correlates with the winter North Atlantic Oscillation index and with chlorophyll concentrations, w
'/>"/>

Contact: Todd McLeish
tmcleish@uri.edu
401-874-7892
University of Rhode Island
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Climate change goes underground
2. Opportunity for students displaced by Katrina to assess climate vulnerability of Southeast US
3. Climate -- no smoking gun for Neanderthals
4. NASA celebrates a decade observing climate impacts on health of worlds oceans
5. NASA celebrates a decade observing climate impacts on health of worlds oceans
6. University and state agencies to forecast local health effects of climate change
7. A greenhouse in order to study the impact of climate change on plants
8. European lead in reading past climates from ice cores
9. International team of scientists warns of climate changes impact on global river flow
10. Heaps of climate gas
11. Nobel Peace Prize 2007 to intergovernmental panel on climate change
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/21/2014)... a professor of entomology and cooperating faculty ... the University of California, Riverside, has been awarded the ... of Chemical Ecology ( ISCE ). , Awarded first ... the society,s highest honor. It is awarded annually to ... the study of chemicals that mediate interactions between living ...
(Date:7/21/2014)... high health risk warning for Yellowknife and surrounding area ... forest fires. Currently 160 wildfires are burning across ... since these fires are endangering people or property. ... with mixed results. The rains help to dampen ... , This year the Northern Territories have seen 855,000 ...
(Date:7/21/2014)... Diego School of Medicine-led study suggests that parents of ... health consequences of childhood weight gain or the importance ... a healthy weight. , The study is published online ... and Dietetics . , "Parents have a hard time ... lead author Kyung Rhee, MD, and an assistant adjunct ...
Breaking Biology News(10 mins):UC Riverside entomologist receives international honor for chemical ecology contributions 2Parents rank their obese children as 'very healthy' 2
... 9, 2007) -- When its time for moose to ... to where it is safest from predators namely ... the Wildlife Conservation Society. Published in the Royal ... avoid predation of their calves by grizzly bears by ...
... MIT Holding, Inc. (OTCBB: MITD), in collaboration with ... designs of the patent pending PROVECTOR. This small dispensable ... and parasites found in mosquitoes that carry deadly diseases ... The PROVECTOR will initially be made available in countries ...
... of the leading global STM publishers, has entered a ... the journal Estuaries and Coasts. Appearing six times ... promoting research on and management of estuarine and coastal ... be February 2008. The partnership will be officially ...
Cached Biology News:MIT Holding, Georgia Southern University, and MEVLABS successfully test the PROVECTOR 2Estuarine Research Federation chooses Springer as publishing partner 2
(Date:7/22/2014)... July 22, 2014 The DNA ... and concise visual representation of history, migration, and culture. ... always regaled by family history stories stemming from Europe. ... the "old country." Pictures and 8mm home movies painted ... of the family, and Steve ordered a test from ...
(Date:7/22/2014)... Corporation (NASDAQ: NEOG ) announced today that ... 31, increased 19% from the previous year to $247,405,000. ... prior year,s $27,190,000. Adjusted for a 3-for-2 stock split ... current year were $0.76, compared to $0.75 a year ... fiscal year established new all-time highs for the 32-year-old ...
(Date:7/22/2014)... CAMBRIDGE, Massachusetts en SHENZHEN, China ... Solutions Co., LTD, (BGI Tech), een dochtermaatschappij van BGI, ... kondigde de wereldwijde introductie aan van een nieuwe service ... de sector meest geavanceerde platform van Complete Genomics. ... bedrijf dat binnen de sector in hoog aanzien staat ...
(Date:7/22/2014)... In chemical and petrochemical plants, and ... The rapid rise of TDL analyzers over recent ... a core gas measurement technology, and their high ... gas analyzer technology of choice for many companies. ... processes have limited their application range. METTLER TOLEDO's ...
Breaking Biology Technology:DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 2DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 3DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 4Neogen reports 19% increase in annual revenues 2Neogen reports 19% increase in annual revenues 3Neogen reports 19% increase in annual revenues 4Neogen reports 19% increase in annual revenues 5Neogen reports 19% increase in annual revenues 6Neogen reports 19% increase in annual revenues 7Neogen reports 19% increase in annual revenues 8BGI Tech introduceert service op gebied van hele menselijke exoomsequencing op geavanceerd Complete Genomics-platform 2METTLER TOLEDO Shows How Tunable Diode Lasers (TDLs) Can Be Installed Where No TDLs Have Gone Before 2
... quarter has come and gone and daylight savings time is now ... market, on the other hand, is in the midst of a ... uniformly across the board. Only the Dow Jones Industrials fared better ... the song Stormy Monday came from). The Nasdaq shed blood in ...
... On Thursday afternoon undergraduates from 15 University of Wisconsin ... in Madison. , ," Posters in the Rotunda " ... with state and university officials and the public from ... short program will include remarks from UW System President ...
... & Electric has released its 2005 Greater Madison ... updated listings covering 394 organizations. , ,The directory, which ... an overview of the high-tech firms, professional organizations, venture ... Dane County, as well as an array of other ...
Cached Biology Technology:Midwest shares in stock-market bloodshed as biotechs falter 22005 Madison-area tech directory includes more companies, resources 22005 Madison-area tech directory includes more companies, resources 3
... Physical form: Solution in 50% glycerol containing 20 mM ... and 20 mM NaCl Preparation Unit Definition: One unit ... equivalent to a ΔA 260 of 1.0 in ... volume 2.625 ml). Assay: SDS-PAGE ≥ 90 % ...
Mouse monoclonal antibody to PPP2R2C - protein phosphatase 2 (formerly 2A), regulatory subunit B (PR 52), gamma isoform...
Mouse monoclonal antibody to PARK2 - Parkinson disease (autosomal recessive, juvenile) 2, parkin...
... quantitation kit is used to quantitate double-stranded DNA ... RNA or protein. With this kit, DNA is ... detected with a VersaFluor or other fluorometer. The ... ng per ml to 5 micrograms per ml ...
Biology Products: