Navigation Links
New study examines how ocean energy impacts life in the deep sea
Date:9/5/2012

Durham, NC A new study of deep-sea species across the globe aims to understand how natural gradients in food and temperature in the dark, frigid waters of the deep sea affect the snails, clams, and other creatures that live there.

Similar studies have been conducted for animals in the shallow oceans, but our understanding of the impact of food and temperature on life in the deep sea the Earth's largest and most remote ecosystem has been more limited.

The results will help scientists understand what to expect in the deep sea under future climate change, the researchers say. "Our findings indicate that the deep sea, once thought remote and buffered against climatic change, may function quite differently in the future," they write.

All living things need energy in the form of food, heat and light to survive, grow, and reproduce. But for life in the deep sea defined as anything beyond 600 feet (200 m) energy of any kind is in short supply. Descend more than a few hundred feet beneath the ocean surface, and you'll find a blue-black world of near-freezing temperatures, and little or no light.

Because so little of the sun's light penetrates the surface waters, there are no plants for animals to eat. Most deep-sea animals feed on tiny particles of dead and decaying organic matter drifting down from the sunlit waters above. It is estimated that less than 1% of the food at the surface reaches the ocean's watery depths.

The researchers wanted to know what this energy deprivation means for deep sea habitats across the globe, and for the animals that live there. "How much of the differences that we see across different groups of deep-sea animals in terms of growth, or lifespan, or the number of species, are related to differences in the temperature or amount of food where they occur?" said co-author Craig McClain of the National Evolutionary Synthesis Center in Durham, North Carolina.

To find out, the researchers compiled previously published data for hundreds of deep-sea species across the globe, ranging from crabs and snails to fish and tube worms. The data included parameters like metabolic rate, lifespan, growth, biomass, abundance, size and diversity.

The results suggest that the relative importance of the two basic forms of energy available in the deep sea food and warmth vary considerably, said co-author Michael Rex at the University of Massachusetts in Boston.

Temperature has the biggest impact on parameters at the individual level, such as metabolism and growth rate. For example, deep sea animals living in warmer waters tend to have faster metabolisms.

But for higher-level parameters such as abundance or species diversity, food is more important. Generally speaking, food-rich areas tend to have animals that are bigger, more abundant and more diverse.

The results add to the growing body of evidence that the deep sea isn't isolated from the effects of climate change, the researchers say.

"The oceans are getting warmer and they're producing less food," McClain said. Warmer water in the deep sea due to climate change could mean faster growth and metabolism for the animals that live there, but that could be bad news if the oceans produce less food to support them.

"The news is not good," Rex added. "Changes in temperature and food availability associated with climate change could cause widespread extinction in the deep ocean if environmental changes occur faster than deep-sea organisms can respond by shifting their ranges or adapting to new conditions."


'/>"/>
Contact: Robin Ann Smith
rsmith@nescent.org
919-668-4544
National Evolutionary Synthesis Center (NESCent)
Source:Eurekalert  

Related medicine news :

1. More Americans Get Effective HIV Treatment, Study Says
2. Teen Obesity Linked to Moms Smoking in Pregnancy: Study
3. Infections in rheumatoid arthritis patients: Mayo Clinic study finds way to pinpoint risk
4. Men, Women Do See Things Differently: Study
5. Longer Resuscitation After Cardiac Arrest May Be Warranted, Study Suggests
6. Chemical in Household Products May Be Linked to Heart Disease: Study
7. Vitamin D Supplements Wont Help Cholesterol Levels: Study
8. Study finds biologic therapies for rheumatoid arthritis not associated with increased cancer risk
9. Little evidence of health benefits from organic foods, Stanford study finds
10. Combat Stress Linked to Brain Changes in Study
11. Organic Foods Not Healthier or More Nutritious, Study Says
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New study examines how ocean energy impacts life in the deep sea
(Date:6/27/2016)... (PRWEB) , ... June 27, 2016 , ... "FCPX editors ... customizable inside of Final Cut Pro X," said Christina Austin - CEO of Pixel ... style. Final Cut Pro X users can now reveal the media of ...
(Date:6/27/2016)... ... June 27, 2016 , ... A revolution is underway. ... transport experience for the millions of people who require these medical transport services ... industry through the use of technology. Now, SmartEMS has put forth an industry-changing ...
(Date:6/26/2016)... ... ... On June 10-11, 2016, A Forever Recovery, a holistic treatment center for ... Table in Battle Creek, MI, where the rehabilitation facility is located. This annual celebration ... world’s leading providers of cereal and other breakfast foods. Its residents often refer to ...
(Date:6/26/2016)... ... ... blind and certified personal trainer is helping to develop a weight loss fitness plan that ... the two major problems leading the fitness industry today:, , All ... They don’t eliminate all the reasons people quit their exercise program , ...
(Date:6/25/2016)... ... ... Austin residents seeking Mohs surgery services, can now turn to Dr. Jessica Scruggs ... for medical and surgical dermatology. , Dr. Dorsey brings specialization to include Mohs surgery, ... Micrographic Surgery completed by Dr. Dorsey was under the direction of Glenn Goldstein, MD, ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016 Dehaier Medical ... the "Company"), which develops, markets and sells medical devices ... , signed a strategic cooperation agreement with Hongyuan ... "Hongyuan Supply Chain") on June 20, 2016, to develop ... the strategic cooperation agreement, Dehaier will leverage Hongyuan Supply ...
(Date:6/24/2016)... June 24, 2016 Research and Markets ... for Companion Diagnostic Tests" report to their offering. ... Companion Diagnostics The World Market for Companion ... medicine diagnostics. Market analysis in the report includes the following: ... (In Vitro Diagnostic Kits) by Region (N. America, EU, ROW), ...
(Date:6/24/2016)... Mass. , June 24, 2016   Pulmatrix, ... pharmaceutical company developing innovative inhaled drugs, announced today that ... Russell Investments reconstituted its comprehensive set of ... "This is an important milestone for Pulmatrix," ... will increase shareholder awareness of our progress in developing ...
Breaking Medicine Technology: