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JUVENILE GREEN TURTLE (CHELONIA MYDAS) FORAGING ECOLOGY:FEEDING SELECTIVITY AND FORAGE NUTRIENT ANALYSIS
Title
JUVENILE GREEN TURTLE (CHELONIA MYDAS) FORAGING ECOLOGY:FEEDING SELECTIVITY AND FORAGE NUTRIENT ANALYSIS.
Creator
Gilbert, Eliza, Ehrhart, Llewellyn, University of Central Florida
Abstract / Description
For the endangered green turtle, Chelonia mydas, a fundamental component of recovery and conservation is an understanding of its foraging ecology. Foraging optimality models suggest animals will select resources of high quality over those of low quality. For green turtles, this behavior is important, as sufficient quantities of nutritionally adequate forage items are necessary for growth and reproduction. One intrinsic element in the understanding of green turtle foraging ecology is to...
Show moreFor the endangered green turtle, Chelonia mydas, a fundamental component of recovery and conservation is an understanding of its foraging ecology. Foraging optimality models suggest animals will select resources of high quality over those of low quality. For green turtles, this behavior is important, as sufficient quantities of nutritionally adequate forage items are necessary for growth and reproduction. One intrinsic element in the understanding of green turtle foraging ecology is to identify and document the availability and quality of forage resources preferred by green turtles. The objectives of this study were: 1) determine whether juvenile green turtles showed a feeding preference by comparing prey items in the diet to the availability of those items in the habitat, 2) identify species for which there was selection or avoidance, 3) identify nutritional factors determining selection or avoidance of prey items, and 4) evaluate the nutritional content of the diet. This research was conducted by comparing lavage samples from juvenile green turtles to samples from benthic surveys within the habitat. To determine feeding preference, Ivlev's Electivity Index was used to compare ingested species of algae with those available in the habitat. Nutritional analysis of forage was conducted to identify possible nutrients relating to feeding preference. Juvenile green turtles selectively foraged on Chlorophyta and Rhodophyta. Results indicate that diet selection was based on nutritional content. Both the composite diet and the main diet item, Hypnea spp, had a higher gross energy value, were higher in protein, and lower in fiber than prey items that were avoided. Conservation of green turtles requires effective habitat management, which must be informed by an understanding and evaluation of the habitat. For juvenile green turtles, this study indicates that habitats dominated by Chlorophyta and Rhodophyta may be more important for the health of green turtle populations than habitats dominated by Phaeophyta.
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Date Issued
2005
Identifier
CFE0000487, ucf:46355
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0000487
Tea Time: A Comparative Analysis of the Tea Party Caucus and House Republican Conference in the One Hundred Twelfth Congress
Title
Tea Time: A Comparative Analysis of the Tea Party Caucus and House Republican Conference in the One Hundred Twelfth Congress.
Creator
Phillips, Stephen, Pollock, Philip, Ilderton, Nathan, Schafer, Mark, University of Central Florida
Abstract / Description
Following the historic election of Barack Obama, the largest overhaul of the nation's health care system since the Great Society, and with the country still reeling from the worst economic downturn since the Great Depression, a group of disenchanted conservative Republicans and elected leaders wary of government policy gave rise to a new political movement (-) the Tea Party. Since taking the American political system by storm in 2010, considerable research has focused on the electoral...
Show moreFollowing the historic election of Barack Obama, the largest overhaul of the nation's health care system since the Great Society, and with the country still reeling from the worst economic downturn since the Great Depression, a group of disenchanted conservative Republicans and elected leaders wary of government policy gave rise to a new political movement (-) the Tea Party. Since taking the American political system by storm in 2010, considerable research has focused on the electoral consequences of the Tea Party. Using an original dataset and the American National Election Study, I study the Tea Party Caucus at the elite level by analyzing roll call votes, incumbency, and endorsements, and at the mass level through an examination of congressional districts and constituencies. Findings show that members of the Tea Party Caucus and their Republican House colleagues are largely homogeneous. Exceptions to this include economic final passage votes, legislation receiving presidential support, district lean, census region, and presidential vote in congressional districts. Furthermore, evidence is seen that economic factors in members' districts affected the election of freshmen representatives in 2010, and that district variables strongly influence legislative voting behavior. Finally, discontinuity is discovered between the Tea Party movement at the mass level and the Tea Party Caucus at the elite level.
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Date Issued
2014
Identifier
CFE0005229, ucf:50574
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005229