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Temporary ponds as amphibian habitats

Griffiths, Richard A. (1996) Temporary ponds as amphibian habitats. Aquatic Conservation: Marine and Freshwater Ecosystems, 7 (2). pp. 119-126. ISSN 1052-7613. (doi:10.1002/(SICI)1099-0755(199706)7:2<119::AID-AQC223>3.0.CO;2-4) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:18080)

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1. Temporary ponds provide rich but unpredictable habitats for amphibians. Frogs, toads and newts have life cycles which are geared to the filling and drying-up of temporary ponds, and have evolved strategies for dealing with desiccation and short-term changes in pond quality. 2. Plasticity in development allows frogs and toads to adjust the rate of larval development according to the risk of pond desiccation. This may be achieved by increasing behavioural thermoregulation so that body temperature is raised in warm, shallow water. 3. As a pond dries up, increased crowding between amphibian larvae may result in increased competition, growth inhibition, and cannibalism. Large larvae may therefore survive at the expense of small larvae, but this may increase the chance of some reproductive success within the population as a whole. Conflicting selection pressures may maintain different breeding strategies within the same population. 4. Despite high fecundity, repeated breeding by adults, and developmental plasticity and cannibalism in larvae, many larval populations still suffer catastrophic mortality each year. Providing catastrophes do not occur more often than once per generation, the population may still persist. Should extinction occur at one pond, immigration of juveniles or adults from a neighbouring pond may ensure population continuity. Networks of ponds are therefore essential to maintain viable, self-adjusting metapopulations into the long-term. (C) 1997 John Wiley & Sons, Ltd.

Item Type: Article
DOI/Identification number: 10.1002/(SICI)1099-0755(199706)7:2<119::AID-AQC223>3.0.CO;2-4
Additional information: Document Type: Proceedings Paper Conference Information: Pond Conservation Symposium Caersw, Wales, Sep 05, 1996 Countryside Council Wales; Environm Agcy; Brit Ecol Soc, Aquat Ecol Grp
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
G Geography. Anthropology. Recreation
Divisions: Divisions > Division of Natural Sciences > Biosciences
Depositing User: M.A. Ziai
Date Deposited: 06 Mar 1914 05:06 UTC
Last Modified: 16 Nov 2021 09:56 UTC
Resource URI: (The current URI for this page, for reference purposes)

University of Kent Author Information

Griffiths, Richard A..

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