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:9/15/2014)... 2014) The so-called central dogma of molecular ... provided a simplified explanation for how genetic information ... , In reality, of course, the process is ... nearly 60 years ago by Nobel Laureate Francis ... one, there are multiple types of RNA, three ...
(Date:9/15/2014)... a simple, mechanical solution to avoid chromosome sorting ... Science Express. , This natural ... lead to infertility, miscarriage, or congenital conditions. ... problems, but what exactly goes wrong is often ... Trust Center for Cell Biology at the University ...
(Date:9/15/2014)... that a single group of microorganisms may be responsible ... the oceans, with implications for the global carbon cycle ... essential molecule required by most life on this planet, ... of microorganisms because it is so large and complex. ... maintaining the brain and nervous systems, as well as ...
Breaking Biology News(10 mins):Scientists discover RNA modifications in some unexpected places 2Cells simply avoid chromosome confusion 2Cells simply avoid chromosome confusion 3Researchers discover new producer of crucial vitamin 2
... University of North Carolina at Chapel Hill has received ... & Melinda Gates Foundation. The grant will support ... Tsuruta, PhD, and Paul Dayton, PhD, titled "Ultrasound as ... professor in the Laboratories for Reproductive Biology in UNC,s ...
... It has been a hard winter for Monarch butterflies, according ... of Kansas. Taylor said that low temperatures, storms and habitat ... "I spend a lot of time fretting over ... for factors or data that will help me understand the ...
... team of researchers led by University of Notre Dame ... thinking about the genomics of speciation. Titled "Widespread genomic ... edition of the Proceedings of the National Academy ... how the genomes of newly forming species should differ ...
Cached Biology News:UNC researchers receive $100,000 Grand Challenges Exploration Grant to develop male contraceptive 2As monarch butterflies journey north, gardeners can help protect species, researcher says 2Paper offers new insights into the genomics of speciation 2
(Date:9/16/2014)... According to Jeff Howell, Partner of Nidea ... new development in Downtown Toronto is expanding at a ... 755 storeys of new development last week (including three ... dominating the Toronto skyline for the foreseeable future in ... for new development. , As the Toronto city council ...
(Date:9/15/2014)... 16, 2014 Cancer Immunotherapy ... Adoptive T-cell Therapies is a new market research ... the three principal types of therapeutics that have ... in cancer immunotherapy (which is often called "immuno-oncology") ... and Adoptive cellular immunotherapy. , The regular ...
(Date:9/15/2014)... fast when a patient has sepsis, a life-threatening condition ... blood -- often too fast for antibiotics to help. ... developed by a team at Harvard,s Wyss Institute for ... treat sepsis. , "Even with the best current ... at least 30 percent of the time," said Mike ...
(Date:9/15/2014)... , Sept. 15, 2014 Zymo ... viral transport solution for safe ambient temperature storage ... molecular testing. Importantly, the infectivity of agents in such ... maintaining the integrity of the viral nucleic acids ... the recent Ebola epidemic in West ...
Breaking Biology Technology:ITRA Global Reports Downtown Toronto Real Estate Development is in High Gear 2ITRA Global Reports Downtown Toronto Real Estate Development is in High Gear 3Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 2Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 3Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 4Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 5Blood-cleansing biospleen device developed for sepsis therapy 2Blood-cleansing biospleen device developed for sepsis therapy 3Blood-cleansing biospleen device developed for sepsis therapy 4Safe storage and transport of Ebola, Mers-CoV, and other viruses: Groundbreaking viral inactivation solution capable of preserving nucleic acids 2Safe storage and transport of Ebola, Mers-CoV, and other viruses: Groundbreaking viral inactivation solution capable of preserving nucleic acids 3
... Dr. ... San Antonio and South Central Texas, , ... (PRWEB) June 15, 2010 -- For those looking for a trimmer physique without ... Zeltiq ™ Procedure, a new non-invasive body contouring procedure, at his practice - Advanced ...
... data from a retrospective cohort study showed that up to three quarters ... have a substantial adverse effect on major PD-related clinical and health economic ... Disease and Movement Disorders in Buenos Aires, Argentina ( June ... , "The ...
... leading publication on diversity and business, has recognized University Hospitals as a leader among ... , , ... Companies for Diversity based on results from an extensive questionnaire. This is the first ... , , ...
Cached Biology Technology:Dr. Suresh Koneru Introduces Zeltiq Non-Invasive Procedure For Fat Reduction 2Dr. Suresh Koneru Introduces Zeltiq Non-Invasive Procedure For Fat Reduction 3New Study Showed the Impact of Gastrointestinal Disorders in Patients With Parkinson's Disease 2New Study Showed the Impact of Gastrointestinal Disorders in Patients With Parkinson's Disease 3New Study Showed the Impact of Gastrointestinal Disorders in Patients With Parkinson's Disease 4Diversity Publication Names University Hospitals One of Top Hospital Systems in the Nation 2
Spastin (Sp 3G11/1)...
mCD-1 10 transcription reactions...
... Rabbits x 2 , ... bleed x1 /each , Immunizations/Boost injections ... (app. 5 ml) x1 /each , ... /each , Final Bleed ~ 100 ml blood ...
Mouse VCAM-1/CD106 MAb (Clone 112702)...
Biology Products: