Navigation Links
Species unique to tidal marshes face threats

Tidal marshes cover only about 45,000 square kilometers worldwide--about the area of Denmark. In comparison with other habitats, tidal marshes support few nonaquatic vertebrate species, but their unique characteristics have led to the evolution of species and subspecies that are endemic (found nowhere else). These endemic species and subspecies, which seem to be largely restricted to North America, have adaptations that suit them to life in a harsh environment in which seed abundance is low, salinity is high, and flooding is frequent. Yet they face a broad variety of threats from human-caused environmental damage, according to an assessment in the August 2006 issue of BioScience written by Russell Greenberg of the Smithsonian Migratory Bird Center and colleagues.

Tidal marshes occur in mid to high latitudes, along coasts that are protected within estuaries or behind barrier islands. They are most common in North America and China. Some tidal marsh species are protected from high salinity by relatively impermeable skin, and others have kidneys that can concentrate salts from large volumes of water or specialized glands that exude salt. Many are gray or black in color, which is believed to be an advantage because it matches the dark color of the soils often found in tidal marshes. Why endemic tidal marsh species seem to be largely restricted to North America--which has 24 of the worldwide total of 25--is not clear. Although it could reflect differing taxonomic practices in different countries, it may be related to the history of glaciation or of agriculture.
Endemic tidal marsh species are vulnerable to coastal development and to sea level rise, both of which are rapidly reducing the area of tidal marshes. They are also threatened by toxic wastes and invasive species. Greenberg and his coauthors argue for an expanded research program to try to understand how species will respond to these threats.

BioScience publishes commentary and peer-reviewed ar ticles covering a wide range of biological fields, with a focus on Organisms from Molecules to the Environment. The journal has been published since 1964 by the American Institute of Biological Sciences, an umbrella organization for professional scientific societies and organizations that are involved with biology. It represents some 200 member societies and organizations with a combined membership of about 250,000.


'"/>

Source:American Institute of Biological Sciences


Related biology news :

1. New Clues Add 40,000 Years to Age of Human Species
2. Ants Genetic Engineering Leads To Species Interdependency
3. A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years
4. New Species of Coral Discovered Off Southern California
5. The transparent organism: EMBLEM and Carl Zeiss give labs a unique look at life
6. Scientists discover unique microbe in Californias largest lake
7. Jumping genes contribute to the uniqueness of individual brains
8. Cultural norms not unique to human societies
9. New, unique microscope for nanotech
10. Computers to save unique type of American red squirrel
11. Immune system response to viral DNA is unique
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/15/2016)... Yissum Research Development Company of the Hebrew University ... University, announced today the formation of Neteera Technologies ... biological indicators. Neteera Technologies has completed its first round ... Neteera,s ... from sweat ducts, enables reliable and speedy biometric identification, ...
(Date:3/10/2016)... 2016 --> ... "Identity and Access Management Market by Component (Provisioning, Directory ... by Organization Size, by Deployment, by Vertical, and by ... The market is estimated to grow from USD 7.20 ... at a Compound Annual Growth Rate (CAGR) of 12.2% ...
(Date:3/8/2016)... March 8, 2016   Valencell , the ... announced it has secured $11M in Series D ... a new venture fund being launched by UAE-based ... from existing investors TDF Ventures and WSJ Joshua ... continue its triple-digit growth and accelerate its pioneering ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... ... Lamka, PhD to its Scientific Advisory Board. Dr. Lamka will assist PathSensors in ... pathogen detection. , PathSensors deploys the CANARY® test platform for the detection ...
(Date:4/27/2016)... ... , ... Global Stem Cells Group and the University of Santiago ... and development initiatives for potential stem cell protocol management for 2016 – 2020. ... began meeting to establish a working agenda and foster initiatives to promote stem cell ...
(Date:4/26/2016)... Calif. (PRWEB) , ... April 27, 2016 , ... ... office of Lewis Roca Rothgerber Christie LLP as an associate in the firm’s ... U.S. and international electrical, mechanical and electromechanical patent applications. He has an electrical ...
(Date:4/26/2016)... ... April 26, 2016 , ... Heidelberg Instruments, a ... technology innovation for its Volume Pattern Generator (VPG) line of lithography systems. The ... photomasks as well as a solution for mid volume direct write lithography applications. ...
Breaking Biology Technology: