Literaturdatenbank
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Tucker, T., & FitzSimmons, N. N. , Population structure and function of emydura and chelodina in the kimberley plateau, western australia prior to arrival of invasive cane toads. Paper presented at Turtle Survival Alliance 2006 Annual Meeting.
Added by: Admin (13 Dec 2008 22:23:57 UTC) |
| Resource type: Proceedings Article BibTeX citation key: Tucker2006 View all bibliographic details  |
Categories: General Keywords: Australien = Australia, Chelidae, Chelodina, Emydura, Habitat = habitat, invasive Arten = invasive species, Schildkröten = turtles + tortoises Creators: FitzSimmons, Tucker Collection: Turtle Survival Alliance 2006 Annual Meeting |
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| Abstract |
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We summarize information from an ongoing study of Emydura and Chelodina populations across the Kimberley Plateau of Western Australia based on regional surveys across ten rivers during 1999-2006. As this region is expected to be impacted by invasive cane toads, the primary objectives are to establish baselines on the population status and conservation needs of the region’s freshwater turtles. The population structure and growth rate of Emydura and Chelodina are determined by mark-recapture methodology. We contrast the reproductive potential by laparoscopic examinations of a representative sample of turtles to identify reproductive condition. We have investigated the diving behaviours of long-necked Chelodina (sit and wait predators) and short-necked Emydura (active foragers) with time-depth recorders and radio transmitters to investigate habitat use and movement within the dry season. Studies of dietary ecology evaluate the consequences of changes in the environment and land use practices on turtle population. Methods in molecular ecology are establishing the taxonomic status, extent of gene flow, and historic connections among turtle populations in the Kimberley to better delineate the functional management units and evolutionary significant units. The mark-recapture studies set up the necessary monitoring context to establish impacts of cane toad invasion by monitoring population size, age, and sex structure. The project was developed through research agreements between the indigenous traditional owners through the Kimberly Land Council, the Conservation and Land Management unit of Western Australia, and with volunteer support from Earthwatch Institute.
Added by: Admin |