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Quantifying the Trophic Linkages of Antarctic Marine Predators

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Walters, A, Quantifying the Trophic Linkages of Antarctic Marine Predators (2014) [PhD]


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Abstract

Understanding the diet and trophic relationships of animals in space and time, and its implications for population abundance and distributions, is a central problem in ecology. In the marine environment, the dietary study of marine mammal and avian species is impeded by the lack of information on their foraging strategies during the non-breeding period, when individuals migrate from common breeding areas to remote feeding grounds. Moreover, the spatial distribution of males, females and their offspring can differ considerably due to contrasting reproductive requirements and physiological constraints, respectively. Seasonal constraints therefore may influence the spatial distribution of abundant, migratory species, causing the food web structure, energy and nutrient flow within a given system to fluctuate accordingly.

Item Details

Item Type:PhD
Keywords:stable isotopes, food webs, Antarctic marine predators, archival tissues, habitat, trophic niche, diet
Research Division:Environmental Sciences
Research Group:Ecological Applications
Research Field:Ecosystem Function
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Effects of Climate Change and Variability on Antarctic and Sub-Antarctic Environments (excl. Social Impacts)
UTAS Author:Walters, A (Dr Andrea Walters)
ID Code:128574
Year Published:2014
Deposited By:Ecology and Biodiversity
Deposited On:2018-10-01
Last Modified:2018-10-01
Downloads:0

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