Navigation Links
Depression-era drainage ditches emerge as sleeping threat to Cape Cod salt marshes
Date:1/25/2013

nded from nearly invisible threads to open channels some nearly 30-40 meters wide with muddy, exposed edges.

The purple marsh crabs need tidal creek edge habitat to thrive, and do not venture into the inner heart of the marsh, where a shorter cordgrass species (the closely related, but squattier Spartina patens) and other high marsh plants dominate. The old WPA mosquito ditches also fulfill the crabs' habitat requirements. Once benign, the ditches nucleated dramatic reconstruction of the landscape with the loss of blue crab, striped bass, and smooth dogfish, and the subsequent boom of purple marsh crabs.

One of the remarkable features of the cordgrass die-off is its tight locality. Some areas of undeveloped marsh as close as a kilometer to the denuded banks around private residences and public docks appear healthy and unaffected. Mosquito ditches that can only be reached by a hard slog through undeveloped marshland do not display the striking die-off and bank erosion. The pattern cued the researchers to the possibility that recreational fishing was the trigger, Coverdale says. Few people wade into the swamp to fish.

Marshes are excellent model systems for observing the intersection of human impacts that can trigger environmental degradation, the authors say, because they have been exploited by humans for centuries, if not thousands of years, and are easily studied from aerial and satellite images.

"Marshes are one of the most heavily utilized resources worldwide," said Coverdale. "They are easily accessible, and provide shellfish, fuel, baitfish and opportunities for recreational anglers. A lot of those harvests are probably sustainable."But he is interested in the tipping points at which use of the marsh becomes unsustainable. The revelation of the slumbering menace of the mosquito ditches raises the prospect of other submerged impacts that may surface under the influence of new, contemporary pressures.

In the early
'/>"/>

Contact: Liza Lester
llester@esa.org
202-833-8773 x211
Ecological Society of America
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Velvet spiders emerge from underground in new cybertaxonomic monograph
2. RIH study: Emergency patients prefer technology-based interventions for behavioral issues
3. Spider version of Bigfoot emerges from caves in the Pacific Northwest
4. Researchers attack HIVs final defenses before drug-resistant mutations emerge
5. X-ray laser helps slay parasite that causes sleeping sickness
6. Badger sleeping habits could help target TB control
7. Commonly used herbicides seen as threat to endangered butterflies
8. Global warming threat to coral reefs: Can some species adapt?
9. Glacier-fed river systems threatened by climate change
10. EPA to highlight innovative ways to detect and respond to biological threats
11. Heightened Security Threats and Economic Issues Provide Fillip to Global Civil and Military Biometrics Market, Says Frost & Sullivan
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Depression-era drainage ditches emerge as sleeping threat to Cape Cod salt marshes
(Date:4/17/2014)... study suggests that fish consumption advisories for expecting ... long-lived contaminants like persistent organic pollutants (POPs). ... researchers including University of Toronto Scarborough PhD student ... how different levels of environmental contamination, a mother,s ... in the body influenced exposure in her children. ...
(Date:4/17/2014)... anthrax detection cartridge developed at Sandia National Laboratories and ... easier, faster and cheaper. , Bacillus anthracis ... in soils all over the world and can cause ... animals. The bacteria can survive in harsh conditions for ... may occur through skin contact, inhalation of spores or ...
(Date:4/17/2014)... available in German . ... objects; they also provide us with a continuous stream of ... fall or sit still in a car the world ... our retinas. Seemingly without effort, our brain calculates self-motion from ... position and a steady gaze during our own movements. Together ...
Breaking Biology News(10 mins):Fish consumption advisories fail to cover all types of contaminants 2Pocket-sized anthrax detector aids global agriculture 2Pocket-sized anthrax detector aids global agriculture 3How vision makes sure that little fish do not get carried away 2How vision makes sure that little fish do not get carried away 3How vision makes sure that little fish do not get carried away 4
... noses, but a huge part of their brains is dedicated ... smell more than any other sense for essential activities such ... discovered that a gene called distal-less is critical to the ... As reported in the current issue of the Proceedings ...
... MDCarnegie,s educational outreach program, BioEYES, will be the recipient ... the Society for Developmental Biology. BioEYES founders Steve ... the award at the upcoming annual meeting of the ... Valerie Butler, is also currently featured in a video ...
... GAINESVILLE, Fla. A new University of Florida study ... evolution in predictable patterns, meaning evolution repeats itself in ... a naturally occurring hybrid species, Tragopogon miscellus , ... Biology , suggests genome evolution in hybrid plants may ...
Cached Biology News:Researchers find gene critical to sense of smell in fruit fly 2Researchers find gene critical to sense of smell in fruit fly 3UF study: 'Rules' may govern genome evolution in young plant species 2UF study: 'Rules' may govern genome evolution in young plant species 3
(Date:1/15/2014)... 15, 2014 Two champions of science, ... sponsorship of an annual competition for middle and high ... to, innovative STEM study. The competition presents students with ... of Engineering Aptitude, Mathematics, and Sciences is a ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider ... treatment of tinnitus. Patients listen to sound therapy that ... period of weeks to months, their tinnitus volume decreases. , ... Notched Music and Notched White Noise. Now, AudioNotch is pleased ...
(Date:1/14/2014)... leading provider of strategic communications services to corporations and organizations preparing ... the United States and Europe , ... returning to the firm,s Washington, D.C. office. ... two years of service as Associate Commissioner for the Office of ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 iLab Solutions, the ... as the new Director of Product Strategy. In this role, ... as iLab sub-teams to guide in the development of iLab ... provides the maximum possible benefit to the scientific community by ...
Breaking Biology Technology:Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Former FDA Associate Commissioner Returns To 3D Communications 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2
... $2 Million Milestone Payment, CARLSBAD, Calif., April ... ) announced today that Bristol-Myers,Squibb Company (NYSE: ... companies,collaboration as a development candidate. As a result, ... two companies have an ongoing,collaboration to identify antisense ...
... CyberKnife,s Clinical Flexibility, Expanding Physicians ... Options for the Treatment of Prostate Cancer, SUNNYVALE, ... ), a global leader in the field of radiosurgery,announced ... issue of the,International Journal of Radiation Oncology*Biology*Physics -- also ...
... HACKENSACK, N.J., April 8, 2008 For a woman ... outcome is to,choose a gynecologic oncologist, a physician who ... of the female reproductive,system. The complexity of the female ... the abdomen often means that a cancer that attacks,one ...
Cached Biology Technology:BRISTOL-MYERS SQUIBB SELECTS ISIS DRUG TARGETING PCSK9 AS DEVELOPMENT CANDIDATE FOR PREVENTION AND TREATMENT OF CARDIOVASCULAR DISEASE 2BRISTOL-MYERS SQUIBB SELECTS ISIS DRUG TARGETING PCSK9 AS DEVELOPMENT CANDIDATE FOR PREVENTION AND TREATMENT OF CARDIOVASCULAR DISEASE 3BRISTOL-MYERS SQUIBB SELECTS ISIS DRUG TARGETING PCSK9 AS DEVELOPMENT CANDIDATE FOR PREVENTION AND TREATMENT OF CARDIOVASCULAR DISEASE 4CyberKnife Prostate Cancer Planning Study Published in Leading Radiation Oncology Journal 2CyberKnife Prostate Cancer Planning Study Published in Leading Radiation Oncology Journal 3CyberKnife Prostate Cancer Planning Study Published in Leading Radiation Oncology Journal 4Gynecologic Oncologist, With Board Certification in GYN Oncology, OB/GYN, and Surgery Offers Women With Cancer the Newest Treatment Frontier: the Surgical Robot 2
... Activins are polypeptide hormones which belong ... superfamily. The TGF- superfamily is a ... which control many aspects of development, ... Other members incude TGF-s, bone morphogenetic ...
... Activins are polypeptide hormones which ... (TGF-) superfamily. The TGF- superfamily is ... factors which control many aspects of ... (1). Other members incude TGF-s, bone ...
... are polypeptide hormones which belong to ... The TGF- superfamily is a large ... control many aspects of development, reproductive ... members incude TGF-s, bone morphogenetic proteins, ...
... Sterile plating in just seconds , ... ethanol flaming, More uniform spreading and more ... dispenser bottle for spreading 100 plates or single-use ... easiest way to spread cells on multiple plates ...
Biology Products: