NDLI: The Effects of Uca pugnax on Pore Water Biogeochemistry in a Spartina alterniflora Salt Marsh

Please wait, while we are loading the content...

The Effects of Uca pugnax on Pore Water Biogeochemistry in a Spartina alterniflora Salt Marsh

Content Provider	Semantic Scholar
Author	Michaels, Rachel Elizabeth
Copyright Year	2004
Abstract	Fiddler crabs (Uca spp.) are abundant on the mid-Atlantic coast of the U.S., yet few studies have focused on their role in the ecology of salt marshes. As a result of their burrowing activity, fiddler crabs alter sediment structure and pore water movement. The objectives of this study were to determine (1) the effects that changes in fiddler crab burrow density have on pore water chemistry (m scale), and (2) the disc of influence of individual fiddler crab burrows on surrounding pore water chemistry (cm scale), a subject not yet investigated. The site for this study was located on a barrier island within the Virginia Coastal Reserve Long Term Ecological Research site. To determine changes in pore water chemistry at the m2 scale, eight locations along a tidal inundation gradient within a salt marsh were examined, each of which contained four treatments arranged parallel to tidal inundation in a randomized block design of 1x1 meter plots. The treatments consisted of: (1) caged crab removal plot (Exclusion), (2) caged burrow addition plot (Artificial Burrow), (3) caged control plot, and (4) un-caged control plot. Pore water samples were analyzed for ammonium, phosphate, and sulfide concentrations, redox potential and salinity. In addition, the effect of the treatments on Spartina alterniflora production was determined. Sulfide concentrations increased significantly with increased burrow density (p = 0.0183). There was no treatment effect for the other pore water variables or S. alterniflora production. The area of the study site that drove the increase in sulfide concentration was poorly drained; the extent of drainage and sediment characteristics seem to determine the effects that fiddler crab burrows have on pore water chemistry and the growth of S. alterniflora.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.vcrlter.virginia.edu/thesis/michaels_ms_2004.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in