Navigation Links
Bering Sea study finds prey density more important to predators than biomass
Date:1/3/2013

CORVALLIS, Ore. Marine resource managers often gauge the health of species based on overall biomass, but a new study of predator-prey relationships in the Bering Sea found that it isn't the total number of individuals that predators care about it's how densely they are aggregated.

It's more than searching for an easy meal, the researchers say. Predators need to balance how much energy they expend in searching for food with the caloric and nutrient value of that which they consume. When prey doesn't aggregate, however, the search for food becomes much more difficult affecting the health of the predators' offspring and the vitality of their overall population.

Results of the study were published this week in the journal PLOS ONE. The study was part of the Bering Sea Integrated Ecosystem Research Project, which was funded by the North Pacific Research Board and the National Science Foundation.

"We had to think very differently about these interactions, trying to see the world from the predators' point of view," said Kelly Benoit-Bird, an Oregon State University marine ecologist and lead author on the study. "When we first tried to identify good foraging locations for predator species we looked at areas of high prey numbers because it makes sense that they'd be where the food is. But the results didn't match what we might have expected.

"Predator populations that should have been doing well, based on prey numbers or biomass, were in fact not doing well," added Benoit-Bird, an associate professor in OSU's College of Earth, Ocean, and Atmospheric Sciences. "What we discovered is that smaller aggregations of prey are more attractive to predators if they are sufficiently dense."

The findings are particularly important, scientists say, because almost all fisheries management is based on biomass tons of fish and not how those fish may be distributed in the sea.

In their study, the researchers looked at
'/>"/>

Contact: Kelly Benoit-Bird
kbenoit@coas.oregonstate.edu
541-737-2063
Oregon State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Big brains are pricey, guppy study shows
2. Hebrew University study finds key mechanism in calcium regulation
3. New study documents the natural relationship between CO2 concentrations and sea level
4. Stowers study hints that stem cells prepare for maturity much earlier than anticipated
5. Birdsong study pecks theory that music is uniquely human
6. Study turns parasite invasion theory on its head
7. Gout study offers genetic insight into disease of kings
8. Native orchid protection and conservation subject of new AgriLife Research study
9. Cell Transplantation study investigates fate and function of cells transplanted to the CNS
10. Study reports iron oxide nanoparticles effective for labeling human endothelial cells
11. Study looks at gray seal impact on beach water quality
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bering Sea study finds prey density more important to predators than biomass
(Date:3/11/2015)... 11, 2015 Research and Markets ( ... "Access Control Market by Product, Application & By Geography ... to their offering. , This report predicts ... $10.4 billion by 2020, with an estimated CAGR of ... the products types such as contact cards & readers, ...
(Date:3/10/2015)...  NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce ... been named the "Number One Best Tech Gift ... Modern ( http://www.rethinkmodern.com/ ) is a web magazine focused ... that have a unique function or design.  ...
(Date:3/2/2015)... 2015  Businesses have a new option for ... Rankins Enterprises has announced the launch of a ... for businesses to protect their customers, personal data, ... Beconux is a biometric transaction processing system ... to an ATM machine, the new system fuses ...
Breaking Biology News(10 mins):Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 3NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 4Personal Data Protection Company Launches New Product 2
... of California, Berkeley, virologist and an assistant professor in the ... M. Keck Foundation grant, an award given to innovative young ... which totals up to $1 million over five years, will ... herpesvirus as a tool to study the inner workings of ...
... WORCESTER, Mass.In recent years, a class of small molecules known ... in regulating gene products in most animal and plant species. ... development of alcohol tolerance, a hallmark of alcohol abuse and ... and Alcoholism (NIAAA) report the findings in the July 31 ...
... death but now a study of brain tissue collected during ... and suicide. The international research group, led by Dr. ... of Western Ontario and Dr. Hymie Anisman of the Neuroscience ... that proteins that modify DNA directly are more highly expressed ...
Cached Biology News:UC Berkeley virologist named Keck Distinguished Young Scholar 2MicroRNA implicated as molecular factor in alcohol tolerance 2Study identifies changes to DNA in major depression and suicide 2
(Date:3/27/2015)... 27, 2015 Working in collaboration with ... London , Richmond Pharmacology is the first ... 3 study for an investigational RNAi therapeutic being developed for ... the nerves and heart. Read press release ... Based at St Georges University of London ...
(Date:3/27/2015)... -- CASI Pharmaceuticals, Inc. (Nasdaq: CASI ), a biopharmaceutical ... innovative therapeutics addressing cancer and other unmet medical needs ... China , today reported financial results ... 2014.  The Company reported a net ... the three months ended December 31, 2014.  This compares ...
(Date:3/26/2015)... -- Roka Bioscience, Inc. (NASDAQ: ROKA ), a ... solutions for the detection of foodborne pathogens, today ... and full year ended December 31, 2014. ... quarter ended December 31, 2014 was $1.4 million ... 2013 and $1.5 million for the third quarter ...
(Date:3/26/2015)... TORONTO , March 26, 2015 /PRNewswire/ - SQI ... SQIDF) announced that after dealing with certain matters, including ... of shareholders held on March 26, 2015 (the "Meeting") ... until April 8, 2015 at 11:00 a.m. ( ... Meeting has been changed from that previous disclosed. The ...
Breaking Biology Technology:CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 2CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 3CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 4CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 5CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 6Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 2Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 3Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 4Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 5Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 6Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 7SQI Diagnostics Inc. Announces Adjournment of Meeting 2
... NEW BRUNSWICK, N.J., Dec. 5 Senesco Technologies, Inc. ... today that its Development and License Agreement with the ... mutual agreement because of Harris Moran,s recently announced corporate ... Harris Moran has reported that its parent company, Limagrain, ...
... BioCryst Pharmaceuticals (Nasdaq: BCRX ) announced today ... and BCX-4208, and clinical data on BCX-4208 at the 50th ... held in San Francisco, CA from December 6-9, 2008. ... inhibitors. , , The schedule ...
... YM BioSciences Inc. (NYSE Alternext US:YMI, TSX:YM, ... and commercializes differentiated products for patients worldwide, ... licensee of nimotuzumab from YM,s subsidiary, CIMYM ... the European Medicines Agency (EMEA) for marketing ...
Cached Biology Technology:Senesco and Harris Moran Mutually Agree to Terminate Development and License Agreement Due to Restructuring 2Senesco and Harris Moran Mutually Agree to Terminate Development and License Agreement Due to Restructuring 3BioCryst to Present Three Posters During the 50th American Society of Hematology Annual Meeting and Exposition 2BioCryst to Present Three Posters During the 50th American Society of Hematology Annual Meeting and Exposition 3YM BIOSCIENCES PROVIDES EU REGULATORY UPDATE 2YM BIOSCIENCES PROVIDES EU REGULATORY UPDATE 3
Immunogen: Synthetic peptide (KLH conjugated): L(506) S K S S S Q I R M S G L P A D N L A T(525) Storage: -20 C, Avoid Freeze/Thaw Cycles...
...
This Universal 24" X 18" (61 X 45.7cm.) shaker platforms will accept any Thermo Forma shaker flask clip....
Disposable tips with floating filter (US Patent 6,702,990) for PDM1.5 OneTouch Plus spotpicker, 10 racks of 96, DNAse and RNAse free...
Biology Products: