Life-history traits inform population trends when assessing the conservation status of a declining tiger shark population
作者： Christopher J. Brown , George Roff
DOI: 10.1016/J.BIOCON.2019.108230
关键词:
摘要: The assessment of the conservation status wide ranging species depends on estimates magnitude their population trends. accuracy trend will depend where and how many locations within a species' range are sampled. We ask spatial extent sampling interacts with non-linear patterns in long-term trends to affect decline standardised catch tiger sharks (Galeocerdo cuvier) east coast Australia. apply Bayesian model that uses prior information life-history traits estimate we use data from all regions versus subsets data. As more were included converged toward an overall 71% over three generations. Trends estimated only northern or southern underestimated overestimated regional decline, respectively. When subset was modelled, rather than full data-set, informed by performed well, as did weakly allowed for high variation. rate is consistent listing East Coast Australia endangered under local legislation. Monitoring programs aim should attempt cover extremes mid-points population's range. Life-history can be used inform priors variation may give accurate justified debates about threatened species, particularly when limited.
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