Navigation Links
Oysters could rebound more quickly with limited fishing and improved habitat
Date:6/13/2013

SOLOMONS, MD (June 13, 2013)A new study shows that combining improved oyster restoration methods with limits on fishing in the upper Chesapeake could bring the oyster population back to the Bay in a much shorter period of time. The study led by Michael Wilberg of the University of Maryland Center for Environmental Science's Chesapeake Biological Laboratory assessed a range of management and restoration options to see which ones would have the most likelihood success.

"This new model we developed suggests that oysters should be able to come back if we help them out by reducing fishing pressure and improving their habitat," said Wilberg.

Eastern oysters in the Chesapeake Bay have undergone a drastic decrease in abundance over the past century due to overfishing and disease. The population is currently estimated to be less than one percent of its historic high, making substantial restoration efforts necessary if the population is to recover.

The team's study shows that if oysters were allowed to reproduce naturally and fishing were halted, it would take between 50 to 100 years for oyster abundance to reach as high a level as could be supported by the Bay. If fishing were reduced to about half its current level, it would take as many as 200 to 500 years to see a healthy population restored to the Bay.

"The fishery as it has been practiced hasn't been sustainable, and our model helps explain why," said Wilberg. "Oysters just can't replace the shell that has been removed fast enough to keep up."

Oysters are called ecosystem engineers because they build habitat for themselves and other creatures. Oyster harvesting methods, such as dredging and tonging, chip away at the oyster reef and knock it down, spreading the shells over the bottom and making the remaining oysters prone to being covered by silt or moving them to a soft surface where oysters cannot grow.

Since reefs are the place where oysters are born and reproduce, fishing not only removes adults from the population, but also removes habitat essential to their survival.

"Oysters should be able to rebuild their reefs if we leave them alone," said Wilberg. "It's an experiment that hasn't been tried yet."


'/>"/>

Contact: Amy Pelsinsky
apelsinsky@umces.edu
410-313-8808
University of Maryland Center for Environmental Science
Source:Eurekalert

Related biology news :

1. Electron-beam pasteurization of raw oysters may reduce viral food poisoning
2. This month in ecology: Oysters, big rivers, biofuels
3. Papaya-clay combo could cut cost of water purification in developing countries
4. Flu vaccines aimed at younger populations could break annual transmission cycle
5. Substances from African medicinal plants could help stop tumor growth
6. Living biofilters could reduce greenhouse gas emissions
7. Stem cell study could aid quest to combat range of diseases
8. Acidifying oceans could spell trouble for squid
9. Improving crop per drop could boost global food security and water sustainability
10. Fast-sinking jellyfish could boost the oceans uptake of carbon dioxide
11. New X-ray method shows how frog embryos could help thwart disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/8/2016)... , Dec. 8, 2016 Market Research Future published a ... The global Mobile Biometric Security and Service Market is expected to ... 2022. Market Highlights: ... , Mobile Biometric Security ... to the increasing need of authentication and security from unwanted cyber ...
(Date:12/7/2016)... PUNE, India , December 7, 2016 According to ... NLP, Machine Learning), Software Tool (Facial Expression, Voice Recognition), Service, Application Area, End ... size is estimated to grow from USD 6.72 Billion in 2016 to USD ... Continue Reading ... ...
(Date:12/7/2016)... Avanade is helping Williams Martini Racing, one of ... biometric data in order to critically analyse every aspect ... against their rivals after their impressive, record-breaking pit stop ... with Williams during the 2016 season to capture and ... rate, temperature and peak acceleration) for key members of ...
Breaking Biology News(10 mins):
(Date:1/13/2017)... 13, 2017 Research and Markets has announced ... - Global Forecast to 2021" report to their offering. ... The biosimilars market ... 3.39 Billion in 2016, at a CAGR of 26.3%. ... product, manufacturing type, and application. Factors such as rising incidence of ...
(Date:1/12/2017)... ... January 12, 2017 , ... ... VTI, Vertebral Technologies, Inc., announces the successful outcome of the first lumbar ... 2016, VTI (Vertebral Technologies, Inc.) has partnered with Mexico-based medical product company ...
(Date:1/12/2017)... The Energy and Resources Institute ... producing mycorrhizae. The Centre for Mycorrhizal Research at TERI ... and developed a technology that eventually produces mycorrhizae based ... ... The TERI facility has a production capacity of over ...
(Date:1/11/2017)... ... January 11, 2017 , ... Phase ... show early promise of the investigational anti-cancer agent tucatinib (formerly ONT-380) against HER2+ ... treatment regimens. Twenty-seven percent of these heavily pretreated patients saw clinical benefit from ...
Breaking Biology Technology: