HOME >> BIOLOGY >> NEWS
Report in BioScience details global decline of nonmarine mollusks

In the April, 2004, issue of BioScience, a team of 16 experts from around the world report on the diversity and plight of what may be the world's most endangered group of animals nonmarine mollusks (that is, terrestrial and freshwater mollusks). The World Conservation Union lists in the IUCN Red List of Threatened Species a total of 1,930 threatened nonmarine mollusks, which is nearly half the number of all known amphibian species, more than twice the number of shark and ray species, and nearly seven times the number of turtle species.

Furthermore, nonmarine mollusks have the dubious honor of having the highest number of documented extinctions of any major taxonomic group. A staggering 42% of the 693 recorded extinctions of all animal species since the year 1500 are mollusks (260 gastropods and 31 bivalves).

Regrettably, nonmarine molluscan extinctions go largely unnoticed by the general public, most biologists, and many conservation agencies, which focus their resources and energy on more charismatic vertebrate species. The extraordinary decline of nonmarine mollusks is due directly to habitat destruction and disruption of natural ecosystem processes. As an integral component of healthy ecosystems, molluscan diversity is valuable both for its own sake and as an indicator of conditions that may affect other species, including our own.

Nonmarine mollusks are members of the second most diverse group of animals, the phylum Mollusca, which includes snails, slugs, clams, mussels and others. There are approximately 24,000 terrestrial and 7,000 freshwater mollusk species for which valid descriptions exist. There are probably 11,000 to 40,000 undescribed terrestrial species and 3,000 to 10,000 undescribed freshwater species. Even the lower estimates exceed the number of all known species of birds, and the higher figures exceed the number of all known species of vertebrates.

Journalists may obtain copies of the article by contacting Donna Ro
'"/>

Contact: Donna Royston
droyston@aibs.org
202-628-1500 x261
American Institute of Biological Sciences
2-Apr-2004


Page: 1 2

Related biology news :

1. Report outlines vision and recommendations for microbiology in the 21st Century
2. Report outlines steps needed to lessen smallpox threat
3. Reporters from Science Magazine to receive ASM Public Communications Award
4. National Academies news: Report on EPAs particulate matter research
5. Report details growing climate change threat to coral reefs
6. Report to aid nation in managing freshwaters
7. Report examines use of antibiotics in agriculture
8. Report offers action plan for curbing diseases that kill millions
9. Report focuses on the science and safety of genetically modified crops
10. Report considers role of science in a world made vulnerable by terrorism
11. Report supports sustainable food production

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


(Date:11/21/2016)... , Nov. 21, 2016   Neurotechnology ... object recognition technologies, today announced that the MegaMatcher ... cards was submitted for the NIST Minutiae ... passed all the mandatory steps of the evaluation ... is a continuing test of fingerprint templates used ...
(Date:11/17/2016)... Global Market Watch: Primarily supported by ... Banks and Academics) market is to witness a value of ... the highest Compounded Annual Growth Rate (CAGR) of 10.75% is ... analysis period 2014-2020. North America is ... Europe at 9.56% respectively. Report ...
(Date:11/16/2016)... SANTA CLARA, Calif. , Nov. 16, 2016 /PRNewswire/ ... company enhancing user experience and security for consumer ... provider for the financial and retail industry, today ... more secure and convenient way to authenticate users ... now uses Sensory,s TrulySecure™ software which ...
Breaking Biology News(10 mins):
(Date:12/6/2016)... -- According to a new market research report "Microfluidics ... Application (Genomics, Proteomics, Capillary Electrophoresis, POC, Clinical, Environmental, Drug Delivery) - ... projected to reach USD 8.78 Billion by 2021 from USD 3.65 ... period (2016 to 2021). Continue Reading ... ...
(Date:12/6/2016)... , Dec. 6, 2016 Zimmer Biomet Holdings, ... announced the pricing terms of its previously-announced cash ... aggregate purchase price (excluding accrued and unpaid interest ... and excluding fees and expenses related to the ... securities identified in the table below (collectively, the ...
(Date:12/6/2016)... 6, 2016  The Texas Medical Center ... (HISA) today announced the establishment of a new ... Australia and the Texas Medical ... HISA and the Texas Medical Center, with ... create a global health innovation ecosystem where emerging technologies ...
(Date:12/6/2016)... ... December 06, 2016 , ... RoviSys, a leading independent ... Aurora, Ohio, announced the opening of their new office building today. Located at ... is home to 200 employees focused on providing sales, engineering, and support services ...
Breaking Biology Technology:
Cached News: