HOME >> BIOLOGY >> NEWS
Overfishing sets the stage for other problems in marine ecosystems

rwater habitats is cited as a primary cause leading to the collapse of fish populations around coral reefs in the tropics, the article states.

The paper is based on four types of records: modern ecological records, historical information about fishing activities starting from the 15th century, archeological records from human coastal settlements occupied as far back as 10,000 years ago, and paleoecological data going back as far as 125,000 years ago.

In many cases, evidence for large populations of marine creatures in the past stands in stark contrast to relatively small numbers of such animals today, the authors note. Examples of overfishing are cited in aboriginal, colonial and modern cultures, but modern technology has allowed harvesters to eliminate what had been considered an inexhaustible marine resource, say the authors.

The historical perspective can be used to develop modern management strategies that could help fish populations recover, the authors also note. With some exceptions, most populations exist at levels that can be restored through the use of bold experiments to test the success of integrated management for multiple goals on the scale of entire ecosystems.

Food webs are ghosts of what they once were, adds Steneck. When food webs are altered, the ecosystem changes. In Maine we have a very unstable coastal ecosystem today with changes occurring at the scale of years to decades, not centuries to millennia as was formerly the case.

We dont understand all of the changes, but today there are areas carpeted with blue mussels where they used to be rare. Rock crabs have exploded to extraordinary density in some areas. Last year we relocated tens of thousands of sea urchins to bring them back to an area where harvesting has eliminated them, but they were all eaten by crabs. Change is common in all ecosystems, but the rate and magnitude of change we are
'"/>

Contact: Nick Houtman
houtman@maine.edu
207-581-3777
University of Maine
26-Jul-2001


Page: 1 2 3 4

Related biology news :

1. Overfishing may diminish genetic diversity even when millions of fish remain
2. Aquaculture: Not An Easy Answer To Overfishing
3. OutFoxed! New research may redefine late-stage cardiac development
4. Anti-cancer compound in vegetables found to block late-stage breast-cancer cell growth
5. The telomere crisis: A crucial stage in breast cancer
6. Shortened chromosomes linked to early stages of cancer development
7. Failure of DNA repair mechanism precedes final stage of deadly leukemia, new Penn study shows
8. New test detects cirrhosis of the liver in an early stage
9. Bioprocesses upstage traditional chemical processes
10. New findings are a window into the late stages of Lou Gehrigs disease
11. Stem cells illuminate early stages of human development

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/11/2020)... ... May 11, 2020 , ... ... platform for patients with implanted cardiac devices. The Octagos software allows healthcare professionals ... The software greatly simplifies the management of remote transmissions and at the same ...
(Date:5/6/2020)... ... May 06, 2020 , ... The LaunchPort™ ... the latest out-of-state company to partner with the device accelerator located in ... a point-of-care analyzer capable of accurately performing enzyme-linked immunosorbent assays (ELISAs), the ...
(Date:5/1/2020)... ... 2020 , ... Flagship Biosciences , providers of expert ... and regulatory services advisor. The companies now deliver regulatory strategy and support to ... a collaborative approach to empower more confident and informed regulatory decisions through every ...
Breaking Biology News(10 mins):
(Date:5/14/2020)... WILMINGTON, Del. (PRWEB) , ... May 12, 2020 ... ... selection of Interdisp JCS as the new distribution partner for all personal care ... the DuPont GENENCARE®OSMS portfolio and DuPont preservative portfolio for personal care. , ...
(Date:5/14/2020)... ... May 13, 2020 , ... ... or phenotypic readouts, providing little or no information on the drug’s mechanism of ... comprehensive characterization of compounds by measuring the activity of molecular pathways. This information ...
(Date:5/5/2020)... ... May 05, 2020 , ... ProductLife Group has marked ... Duburcq joins the group after 13 years at Altran, where he was Group VP ... in Immunology and being a Pharmacist, Xavier was involved in his early career in ...
(Date:4/26/2020)... ... April 23, 2020 , ... Indegene Omnipresence, Inc. announced ... applications and services for use on Microsoft Azure. The customer experience management (CXM) ... online for a built-for-purpose customer engagement capability to use in their commercial or ...
Breaking Biology Technology:
Cached News: