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首页> 外文期刊>Oryx >A management strategy for the long-term conservation of the Endangered sand-dune lizard Liolaemus multimaculatus in the Pampean coastal dunes of Argentina
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A management strategy for the long-term conservation of the Endangered sand-dune lizard Liolaemus multimaculatus in the Pampean coastal dunes of Argentina

机译：濒临灭绝的沙丘蜥蜴Liolaemus multimaculatus的管理策略在阿根廷的南部沿海沙丘中

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摘要

The sand-dune lizard Liolaemus multimaculatus is an Endangered species endemic to the Pampean coastal dunes of Argentina. To inform the development of a future Action Plan for this species, we investigated the demography and conservation status of all remaining populations, and we suggest management actions appropriate to local needs. We used population viability analysis to assess extinction risk in three inbreeding scenarios and estimate the minimum viable population and the minimum area requirement. To assess the current status of each local population, we used information related to population size, human pressure and connectivity. The results were then used to set and prioritize conservation management actions at local level. Our models indicated that populations of 2,400 individuals would be viable in the long term and that inbreeding depression has a strong effect on extinction risk. The southern patches of coastal dune contain the largest populations of sand-dune lizards, and they are also better connected and less threatened. We suggest land protection as the priority management action for populations larger than the minimum viable population, whereas habitat recovery, when possible, should be the priority for patches of coastal dune smaller than the minimum area requirement. Supplementation with a small number of individuals could stabilize unviable populations but should be considered only in certain situations. The long-term conservation of the sand-dune lizard will be feasible only if a conservation action plan is developed and implemented.
机译：沙丘蜥蜴Liolaemus multimaculatus是一个濒临灭绝的物种，属于阿根廷的Pampean沿海沙丘。为了告知发展本物种未来的行动计划，我们调查了所有剩余人口的人口和保护地位，我们建议适合当地需求的管理行动。我们使用人口的活力分析来评估三种近亲繁殖情景中的灭绝风险，并估计最低可行的人口和最低面积要求。为了评估每个本地人口的当前状态，我们使用与人口大小，人的压力和连接有关的信息。然后将结果用于在地方一级设定和优先考虑保护管理行动。我们的模型表明，长期以来的人口> 2,400人将是可行的，近亲繁殖的抑郁症对灭绝风险有很大的影响。沿海沙丘的南方斑块含有最大的沙丘蜥蜴人群，它们也更好地联系，威胁不那么威胁。我们建议土地保护作为大于最低可行群体的人口的优先管理行动，而居署恢复，尽可能是沿海沙丘的补丁优先考虑比最小面积要求的优先权。少数个体的补充可以稳定不可行的人群，但应仅在某些情况下被视为。只有在制定和实施保护行动计划时，砂沙德尼蜥蜴的长期保护将是可行的。

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