Navigation Links
Fish have enormous nutrient impacts on marine ecosystems, study finds
Date:12/11/2012

Athens, Ga. Fish play a far more important role as contributors of nutrients to marine ecosystems than previously thought, according to researchers at the University of Georgia and Florida International University. In a pair of papers in the journal Ecology, they show that fish contribute more nutrients to their local ecosystems than any other sourceenough to cause changes in the growth rates of the organisms at the base of the food web.

Jacob Allgeier, a doctoral student in the UGA Odum School of Ecology, and Craig Layman, associate professor at Florida International University, led the study, which took place in the waters of a large bay on Abaco Island, Bahamas.

Most tropical coastal ecosystems are nutrient limited, meaning that the system's primary food sources such as algae and seagrass need to have enough nitrogen and phosphorusin the right proportionsto grow and thrive.

"We've been thinking about the role of fish and the nutrients they're excreting in these ecosystems for a while now," Allgeier said. In marine food webs, fish are usually thought of as predators, he explained, consuming microorganisms, plants and smaller animals. But fish have another important, although often overlooked, role in the system. Through excretion, they recycle the nutrients they take in, providing the fertilizer sea grass and algae need to grow.

To determine the impact of nutrients from fish, the team needed to compare sites with fish populations of different sizes. Knowing that fish tend to congregate around reefsthe larger the reef, the more fish it attractsthey built a series of artificial reefs of two sizes, large and small, and selected a number of control sites with no reefs at all.

Over the course of two years they surveyed each site periodically to record the number, size and species of fish present. Allgeier created models to estimate the supply of nutrients from all species of fish at the various sites.


'/>"/>
Contact: Jacob Allgeier
jeallg@uga.edu
University of Georgia
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Lack of nutrients and metabolic syndrome linked to different subtypes of depression
2. Nutrient in eggs and meat may influence gene expression from infancy to adulthood
3. Increased sediment and nutrients delivered to bay as Susquehanna reservoirs near sediment capacity
4. U OF A expert pinpoints nutrient behind fresh water algae blooms
5. Study: No-fat, low-fat dressings dont get most nutrients out of salads
6. Prenatal micronutrient, food supplementation intervention in Bangladesh decreases child death rate
7. Obtaining key nutrients from canned foods can save consumers money
8. Nutrient and toxin all at once: How plants absorb the perfect quantity of minerals
9. Consumers need simple, concise messages about benefits of phytonutrients
10. Research on flavanols and procyanidins provides new insights into how these phytonutrients may positively impact human health
11. Researchers investigate impacts of climate change on rare tropical plants
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fish have enormous nutrient impacts on marine ecosystems, study finds
(Date:8/20/2014)... E. Fox, a John and Rebecca Moores Professor of Biology ... a fellow in the International Society for the Study of ... of four members two from the U.S., one from ... 2014. Fellows are elected every three years, and 36 have ... more than 20 countries, the ISSOL includes researchers from disciplines ...
(Date:8/20/2014)... finds life can persist in a cold, dark world. ... team that examined waters and sediments from a shallow ... the extreme environment supports microbial ecosystems. , The ... colleagues has implications for life in other extreme environments, ... findings are published in the current edition of the ...
(Date:8/20/2014)... of the Para and Mato Grosso states of Brazil. ... in order to deforest the land. Deforestation is the ... the land is thereafter converted to a nonforest use. ... ranches, or urban use. The herringbone-patterned tan lines cutting ... the middle of the image are evidence of deforestation ...
Breaking Biology News(10 mins):UH professor named fellow by International Astrobiology Society 2University of Tennessee research uncovers subglacial life beneath Antarctic ice sheet 2
... children with autism have a wide range of genetic ... genetic test to identify the disorder. Now, University of ... in the facial features and brain structures of children ... to develop a formula for earlier detection of the ...
... Woods Institute for the Environment has awarded five faculty ... that help solve the world,s urgent demands for fresh ... and well-being, yet in poor countries more than a ... and more than 2 billion lack basic sanitation facilities," ...
... and marrow transplant physician Naynesh Kamani, MD ... new national clinical trial of unrelated donor marrow and ... cell disease . Children,s National will join more than ... clinical trial of this treatment. If successful, the Sickle ...
Cached Biology News:Researchers study facial structures, brain abnormalities to reveal formula for detection of autism 2New planning grants to fund research on freshwater issues 2New planning grants to fund research on freshwater issues 3Children's national co-leads nationwide study of landmark sickle cell treatment 2
(Date:8/20/2014)... that American Indians largely were wiped out by diseases ... brought to the New World by European explorers., One ... lived in the Americas shortly before Europeans arrived, and ... diseases., But new research led by anthropological geneticists Anne ... the University of Tubingen in Germany indicates the diagnosis ...
(Date:8/20/2014)... 2014 High performance computing (HPC) ... most complete climate and Earth system model to ... issues. , Eight national laboratories, including Lawrence ... Center for Atmospheric Research, four academic institutions and ... participating national laboratories include Argonne, Brookhaven, Lawrence Berkeley, ...
(Date:8/20/2014)... 2014 The 6th Annual Arrowhead ... on October 29-30 in San Francisco, CA. This year’s ... government researchers and clinicians focused on addressing and solving ... In the twelve years since the sequencing of the ... introduced with pharmacogenetic information in the label and molecular ...
(Date:8/20/2014)... health of your heart, researchers have discovered. , A ... TENS machine like those designed to relieve labour pains ... raised flap at the front of the ear immediately ... changed the influence of the nervous system on the ... failing hearts too hard. , Professor Jim Deuchars, Professor ...
Breaking Biology Technology:Unusual discovery leads to fascinating tuberculosis theory 2Unusual discovery leads to fascinating tuberculosis theory 3New Project Is the ACME of Addressing Climate Change 2New Project Is the ACME of Addressing Climate Change 36th Annual Personalized and Precision Medicine Conference Bringing Together Thought Leaders to Discuss Clinical Implementation, Dx Reimbursement, Big Data, and Sequencing 2'Tickling' your ear could be good for your heart 2
... Minimally Invasive Treatment of Bone Fractures Achieves Significant ... Feb. 23 IlluminOss Medical Inc., a medical ... Stabilization System for orthopedic surgery, today announced that ... Registration issued by BSI (British Standards Institute). ...
... February 23 Health Robotics and Can-Med,today ... agreement whereby Can-Med,has acquired the exclusive distribution ... Georgia, Kazakhstan, Uzbekistan, Azerbaijan,Iran, Mongolia, Turkmenistan, Kyrgyzstan, ... only automated, point-of-care-distributed, and fail-safe,robotic system for ...
... YORK, Feb. 23 NeoStem, Inc. (NYSE Alternext ... processing and long-term storage of adult stem cells ... signed a license agreement to obtain the exclusive ... applications for cosmetic facial and body procedures and ...
Cached Biology Technology:IlluminOss Medical Receives ISO 13485 Certification 2Health Robotics Expands i.v.STATION(TM) Partnership With Can-Med in 10 Countries Within Central Asia 2Health Robotics Expands i.v.STATION(TM) Partnership With Can-Med in 10 Countries Within Central Asia 3NeoStem Obtains Exclusive Worldwide License to Innovative Stem Cell Technology and Applications for Anti-Aging Skin Rejuvenation Therapies 2NeoStem Obtains Exclusive Worldwide License to Innovative Stem Cell Technology and Applications for Anti-Aging Skin Rejuvenation Therapies 3
... Inhibitor is a potent noncompetitive ... as RNase A. Like other ... Inhibitor is an acidic protein ... kDa. RNaseOUT inhibits RNase A ...
... (Chemical Inkjet Printer) is a revolutionary ... and Protein Macroarray Analysis, developed in ... The strategy compliments established protocols in ... the proteins isoelectric point and apparent ...
... Ribonuclease Inhibitors have broad spectrum RNase inhibitory ... of the neutral type (1). The 50kDa ... binding to RNases in a 1:1 ratio. ... RNasin Ribonuclease Inhibitor to RNase (e.g., RNase ...
... BIOLASE Core Kit contains all ... polymerase assays on a wide ... addition to dNTPs, the Core ... widely used BIOLASE DNA polymerase, ...
Biology Products: