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:7/23/2014)... , , , , ... , , , AUDIO: ... they argue, would be to target the... , , Click ... , , , , , ... , , , , , , Medicine focuses almost entirely on fighting chronic diseases ...
(Date:7/23/2014)... German . , ... processes and transmit signals. To perform these manifold tasks, ... Max Planck Institute for Developmental Biology in Tbingen have ... amino acid chains even when their three-dimensional shapes differ ... arose from common precursors. Presumably, in the course of ...
(Date:7/23/2014)... increase in temperature around the world by 2050, according ... Panel on Climate Change (IPCC), may be advantageous to ... in the growth of forage plants such as ... grazing in tropical countries such as Brazil., The conclusion ... the Department of Biology at the Ribeiro Preto Faculty ...
Breaking Biology News(10 mins):Strategy proposed for preventing diseases of aging 2Strategy proposed for preventing diseases of aging 3Strategy proposed for preventing diseases of aging 4Strategy proposed for preventing diseases of aging 5Protein evolution follows a modular principle 2An increase in temperature by 2050 may be advantageous to the growth of forage plants 2An increase in temperature by 2050 may be advantageous to the growth of forage plants 3An increase in temperature by 2050 may be advantageous to the growth of forage plants 4
... in boy and girl varieties, but they do have sex ... Center shows that some of the earliest evolved forms of ... animals, including that distant cousin of fungus, the human. ... genes from one of the oldest known types of fungi, ...
... and Kent State Universitys Liquid Crystal Institute - recognized ... the field - today announced a partnership to design ... By combining the expertise of the Garden ... sunlight, extending the plant growing season and conserving energy. ...
... SEOUL, South Korea, Jan. 8 Pixelplus ... semiconductor company in Korea that designs,develops, and ... electronics,applications, today announced that it unveiled the ... various image recognition,applications., The PM1002 integrates ...
Cached Biology News:Evolution of the sexes: What a fungus can tell us 2Research project aims to control sunlight, extend growing season and conserve energy 2Pixelplus Unveils Its PM1002 as A Practical Biometric Solution for Iris, Facial and Fingerprint Recognition 2Pixelplus Unveils Its PM1002 as A Practical Biometric Solution for Iris, Facial and Fingerprint Recognition 3
(Date:7/23/2014)... Inc. (NASDAQ: SGMO ) today reported its ... For the second quarter ended June 30, 2014, ... or $0.10 per share, compared to a net loss ... same period in 2013. As of June 30, 2014, ... interest receivable of $236.7 million. Revenues for ...
(Date:7/23/2014)... the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), the Vienna University of ... succeeded in embedding nearly perfect semiconductor crystals into ... producing hybrid nanowires, very fast and multi-functional processing ... in the future. The research results will be ... , Nano-optoelectronics are considered the cornerstone of future ...
(Date:7/23/2014)... Columbia, MD (PRWEB) July 23, 2014 ... Station, an LC/MS amino acid analysis system developed ... analysis, the UF-Amino Station can analyze 38 amino ... , The UF-Amino Station achieves high-speed analysis utilizing ... spectrometer. The LCMS-2020 provides accurate analytical results even ...
(Date:7/23/2014)... de julio de 2014 ADB International ... ha anunciado hoy una asociación con Austen BioInnovation ... o el Instituto), para el propósito de llevar ... terapia de señal bioeléctrica (el E-QURE BST Device), ... que tiene una importante experiencia en cicatrización de ...
Breaking Biology Technology:Sangamo BioSciences Reports Second Quarter 2014 Financial Results 2Sangamo BioSciences Reports Second Quarter 2014 Financial Results 3Sangamo BioSciences Reports Second Quarter 2014 Financial Results 4Sangamo BioSciences Reports Second Quarter 2014 Financial Results 5Sangamo BioSciences Reports Second Quarter 2014 Financial Results 6Sangamo BioSciences Reports Second Quarter 2014 Financial Results 7Sangamo BioSciences Reports Second Quarter 2014 Financial Results 8Sangamo BioSciences Reports Second Quarter 2014 Financial Results 9A crystal wedding in the nanocosmos 2Shimadzu's New UF-Amino Station Provides High-Speed, Multi-Component Analysis of Amino Acids in Food & Beverage and Pharmaceutical Testing 2ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 2ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 3ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 4ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 5ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 6
... technology job market these days is an exercise in faith. Every day, ... truly turning around. , ,At the same time, lots of people ... we tell them about jobs we've spotted, they say to us: "Yes, ... or Monster.com ) you wrote to me about but I'm ...
... the last few weeks journalists and industry forecasters have ... big technological breakthrough for 2004. Many people wonder: Is ... the next big thing? According to Scott ... for the UW-Madison school of business, discussed a model ...
... Fiserv Inc. acquired RegEd Inc. for an undisclosed amount ... and Chief Executive Officer Leslie Muma , allow Fiserv ... acquisition, RegEd will take over the operations of Emerald Learning ... insurance and securities industries. All of RegEds 75 employees are ...
Cached Biology Technology:Pity the Midwest Technology Sales Guy 2Pity the Midwest Technology Sales Guy 3Pity the Midwest Technology Sales Guy 4Pity the Midwest Technology Sales Guy 5Identify Disruptive Technologies and Find the Next Big Thing 2Identify Disruptive Technologies and Find the Next Big Thing 3
... assay for mitochondrial membrane potential detection ... are detected by carboxyfluorescein (FAM)-labelled fluoromethylketone ... non-cytotoxic and bind covalently to the ... the same time the mitochondrial membrane ...
... DMEM and harvested at the log phase of ... in their native forms, cells were fixed in ... 12-well (5 mm) adhesive coated slide, with each ... and to minimize background staining. Each well ...
... The CopyControl™ vector can be induced prior ... vectors provide the stability of single-copy BACs ... or other cloning vectors. The kits provide ... reagents, insert size screening system) necessary to ...
... can be induced prior to DNA purification ... stability of single-copy BACs with the high ... vectors. The kits provide the linearized vector ... screening system) necessary to create a 10X ...
Biology Products: