Diet of a threatened pond frog differs over a small spatial scale

Bower, Deborah S., Pickett, Evan J., Garnham, James I., Deboo, Matthew L., McCurry, Matthew R., Mengerink, Rianne M., Mahony, Michael J., and Clulow, John (2014) Diet of a threatened pond frog differs over a small spatial scale. Endangered Species Research, 23 (1). pp. 93-98.

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Abstract

Suitability of habitat patches affects demographic processes and consequently influences the viability of populations. In order for managers to consider the potential of resources on a scale appropriate to their use, it is important to understand the processes that influence the ecology of threatened species. Differential growth rates of Litoria aurea (green and golden bell frog) at Sydney Olympic Park, Australia, may be explained by prey availability and diet. We tested: (1) whether food availability differed among precincts at Sydney Olympic Park and (2) whether the diet of L. aurea was influenced by availability of invertebrate prey. Diets were distinct among precincts and reflected the variation in biomass and richness of invertebrate assemblages. Precincts with greater biomass corresponded to areas with faster individual growth rates and greater habitat structure. The differences in diet and individual growth rates of L. aurea among precincts at Sydney Olympic Park demonstrate how caution must be applied to generalising population function, even within a small area.

Item ID: 44068
Item Type: Article (Research - C1)
ISSN: 1613-4796
Keywords: patchy habitat; prey; amphibian; food; Litoria aurea
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Funders: Australian Research Council (ARC)
Projects and Grants: ARC LP0989459
Date Deposited: 11 May 2016 23:57
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060201 Behavioural Ecology @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960807 Fresh, Ground and Surface Water Flora, Fauna and Biodiversity @ 100%
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