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:8/29/2014)... the repeated climatic shifts over the last 120,000 ... diversity, a team of researchers led by City ... developed a new biodiversity metric called "phylogeographic endemism." ... genetic variation within species is restricted in geographical ... biology, and 14 other researchers from institutions in ...
(Date:8/29/2014)... in German . ... natural nitrogen cycle on Earth and in biological wastewater ... to depend on nitrite as their source of energy. ... a microbiologist at the University of Vienna, has now ... alternative source of energy. The oxidation of hydrogen with ...
(Date:8/29/2014)... the prolific bloomer Emiliania huxleyi , can grow ... finding contradicts the common view that E. huxleyi ... supplies of thiamine in the ocean to survive. , ... ocean," says CIFAR Senior Fellow Alexandra Worden , ... CIFAR fellows John Archibald (Dalhousie University), ...
Breaking Biology News(10 mins):CCNY team defines new biodiversity metric 2Hydrogen powers important nitrogen-transforming bacteria 2Hydrogen powers important nitrogen-transforming bacteria 3Not all phytoplankton in the ocean need to take their vitamins 2Not all phytoplankton in the ocean need to take their vitamins 3
... keeper of the world,s shark attack records, is also now ... the sawfish. Distinguished by a long rostrum or "saw" ... its name, the sawfish has become a historical and cultural ... ichthyologist and curator of both the International Shark Attack File ...
... Geosphere , The Geological Society of America,s e-journal, ... multiple fields, including tectonics, oceanography, sedimentology, and paleontology, to ... to 6 million years ago; sedimentation in a piggyback ... Nevada; and a study of the South Balkan extensional ...
... Calif. For their landmark research leading to the ... flood-prone areas worldwide, Julia Bailey-Serres of UC ... David Mackill of the International Rice Research ... U.S. Department of Agriculture (USDA) with the 2008 USDA ...
Cached Biology News:Endangered sawfish focus of national collection and recovery efforts 2December Geosphere media highlights 2December Geosphere media highlights 3UC Riverside rice geneticist receives high honor from US Department of Agriculture 2UC Riverside rice geneticist receives high honor from US Department of Agriculture 3
(Date:8/28/2014)... Ca. (PRWEB) August 28, 2014 Best ... rating for an alcohol-based hand sanitizer, asks food processors ... by comparing the hand sanitizer they’re currently using to ... . Hand hygiene is critical to fighting cross-contamination and ... Best Sanitizers believes there are key criteria that ...
(Date:8/28/2014)... devices in spintronics, an electronic which is not ... also on their spin and the spin-related magnetism. ... magnetic signals and vice versa. Recently, the research ... of Physics at Johannes Gutenberg University Mainz in ... Japan, has for the first time realised a ...
(Date:8/28/2014)... BOSTON , Aug. 28, 2014  Next month, executives ... at three key industry events beginning with Patient-Centered Clinical ... Hotel in Boston , September 4-5. Patient ... , and Aaron Fleishman will share insights on ... how a variety of tactics – from media to mobile ...
(Date:8/28/2014)... MENLO PARK, Calif. , Aug. 28, 2014 ... company focused on developing novel mid- to late-stage ... raised $7.0 million in its first round of ... AshHill Biomedical Investments and Hercules Bioventures with participation ... biotech entrepreneur and pharmaceutical executive, Dr. Larry ...
Breaking Biology Technology:Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 3A new, tunable device for spintronics 2A new, tunable device for spintronics 3BBK Worldwide Leads Sessions at Key September Events 2Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3
... Years Recognizes Breakthrough ... of Heart Disease, ABBOTT PARK, Ill., Oct. 28 ... Innovation Award for its XIENCE V(TM),Everolimus Eluting Coronary Stent ... data, the next-generation drug eluting stent,represents a significant advance ...
... Oct. 28 Volcano Corporation,(Nasdaq: VOLC ), a ... the diagnosis and treatment of coronary and peripheral artery,disease, ... for the,third quarter and first nine months of fiscal ... a conference call to discuss its financial,results and operating ...
... 28 Sirnaomics, Inc., (http://www.sirnaomics.com ) announced ... SBIR,(small business innovation research) grant from National ... Sirnaomics, Inc., a,biopharmaceutical company founded in early ... Technology for novel targeted therapeutic,development. The company,s ...
Cached Biology Technology:Abbott's XIENCE V(TM) Drug Eluting Stent Wins Prestigious Chicago Innovation Award 2Abbott's XIENCE V(TM) Drug Eluting Stent Wins Prestigious Chicago Innovation Award 3Volcano Corporation Schedules Third Quarter Conference Call, Webcast 2Sirnaomics Receives SBIR Grant from NCI For Its Multi-Targeted Cancer siRNA Therapeutics 2Sirnaomics Receives SBIR Grant from NCI For Its Multi-Targeted Cancer siRNA Therapeutics 3
Recombinant Feline IFN-alpha...
Anti-OSMR Monoclonal Antibody Research Focus: cytokine/growth factor Storage: 4C Shipping Temperature: 4C...
Rabbit polyclonal to Presenilin 1, prediluted ( Abpromise for all tested applications). entrezGeneID: 5663 SwissProtID: P49768...
ROCK-1 (cleaved) Monoclonal Ab 100 ug purified mouse monoclonal antibody. Clone# 12M03. Reacts with human. Tested in Western blot analysis....
Biology Products: