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Effects of Seagrass on the Benthic Distribution of Copepod Resting Eggs

Title: The Effects of Seagrass on the Benthic Distribution of Copepod Resting Eggs.
Name(s): Scheef, Lindsay Pierce, author
Marcus, Nancy, professor directing dissertation
Blessing, Susan, outside committee member
Huettel, Markus, committee member
Thistle, David, committee member
Department of Earth, Ocean and Atmospheric Sciences, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2009
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: To avoid unfavorable seasonal conditions, some species of calanoid copepods produce resting eggs that do not immediately hatch. When buried in the sediment, these eggs can remain viable from weeks to years, and therefore can represent a potentially important source of recruits to the pelagic population over various time scales. Copepod resting eggs tend to behave similarly to other fine particles in the water column and will accumulate in areas of high deposition and low resuspension. Seagrass beds are known to be environments that promote the accumulation of fine sestonic particles by inhibiting resuspension but have not been previously investigated as possible reservoirs for copepod resting eggs. Three years of field sampling on a shallow reef in the northern Gulf of Mexico has revealed that viable resting eggs of the copepod Acartia tonsa are significantly more abundant in seagrass-colonized sediment than in adjacent unvegetated sediment, even during times of the year when the seagrass canopy is low. Enhanced egg accumulation in seagrass sediment appears to be the result of unique biological, physical, and chemical characteristics within that environment. Seagrass beds may therefore be important accumulation sites for resting copepod eggs in shallow areas subjected to frequent disturbance, and seagrass loss could have significant impacts on local populations reliant on recruitment from resting eggs.
Identifier: FSU_migr_etd-7226 (IID)
Submitted Note: A Dissertation submitted to the Department of Oceanography in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Degree Awarded: Fall Semester, 2009.
Date of Defense: July 31, 2009.
Bibliography Note: Includes bibliographical references.
Advisory Committee: Nancy Marcus, Professor Directing Dissertation; Susan Blessing, Outside Committee Member; Markus Huettel, Committee Member; David Thistle, Committee Member.
Subject(s): Earth sciences
Atmospheric sciences
Persistent Link to This Record:
Owner Institution: FSU

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Scheef, L. P. (2009). The Effects of Seagrass on the Benthic Distribution of Copepod Resting Eggs. Retrieved from