Raleigh, N.C. (UPI) Aug 31, 2010
Human impact on a shellfish consumed in the Pacific for thousands of years may have caused the species to actually increase in size, U.S. researchers say.
Scientists at North Carolina State University, in a counterintuitive finding, say the average size of the humped conch, a food source in the Pacific islands for 3,000 years, has increased in spite of -- or even possibly because of -- increased human activity in the area, a university release said Tuesday.
"What we've found indicates that human activity does not necessarily mean that there is going to be a negative impact on a species -- even a species that people relied on as a major food source," Scott Fitzpatrick, associate professor of sociology and anthropology at NC State, said. "The trends we see in the archaeological record in regard to animal remains are not always what one would expect."
Researchers expected the size of the conchs to decrease over time, based on the conventional wisdom that an expanding human population would result in the conchs being harvested before they could achieve their maximum size.
Instead, they say, the average size of the conchs actually increased in conjunction with a growing human population.
Fitzpatrick believes the size increase is likely related to an increase in nutrients in the conch's waters, a result of increased agriculture and other human activities.
"In the big picture," Fitzpatrick says, "this study tells us to focus on the physical evidence and beware of conventional wisdom."
Share This Article With Planet Earth
Farming Today - Suppliers and Technology
Growing Drought-Tolerant Crops Inching Forward
Milwaukee WI (SPX) Aug 31, 2010
A collaborative team of scientists led by researchers at The Medical College of Wisconsin, in Milwaukee, has used the tools of structural biology to understand how a synthetic chemical mimics abscisic acid (ABA), a key stress hormone that helps plants cope with adverse environmental conditions such as drought. The results are published online in Nature Structural and Molecular Biology in a ... read more
NASA/NOAA Study Finds El Ninos Are Growing Stronger|
Katrina Retrospective: 5 Years After The Storm
Processing Of First TanDEM-X Data Received At Inuvik
Activity At Sakurajima Volcano Intensifies
China Launches New Mapping Satellite
Venture Capital Fund Backs Business Opportunities From Space
Life360 Launches Real-Time Family Tracking App For iPhone
Real-Time Polar Bear News Featured On New Churchill Polar Bears Website
Climate affecting Alaskan spruce forests
Medvedev halts Russian motorway plan after protests
Argentine newsprint maker faces state ax
Malaysia activists hail Norway's blacklisting of timber firm
Juicing Up Laptops And Cell Phones With Soda Pop Or Vegetable Oil?
METRO Applauds Mayor Bloomberg For Signing NYC Biodiesel Heating Oil Legislation Into Law
Genes That Promise To Make Biofuel Production More Efficient, Economical
Biomass Plant To Produce Steam And Electricity Considered
Can The World Be Powered Mainly By Solar And Wind Energy?
Award-Winning SolarFrameWorks BIPV CoolPly System Completed At New England Patriot Place
Solar power moves ahead in California
Carmanah Solar Rooftop PV Grid-Tied System Ready For 500 Dr. David Suzuki Public School Students This Fall
Duke Energy Changes Focus Of Coastal Wind Demonstration Project With UNC
U.K. wind farms deny causing seal deaths
Mortenson Construction Building 100 Turbine Wind Farm In Illinois
Canada looks to utilize wind energy
Tough road ahead for trapped Chile miners
Trapped miners in Chile are alive after 17 days
21 dead, 12 trapped in China mine accidents
Chinese rescuers battle to save 24 trapped in mine
Once-banned, Jia Zhangke seeks wider audience in China
China warns India over PM talks with Dalai Lama
China may scrap death penalty for some economic crimes
China's Wen calls for political reform: state media
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement|