Demographic variation in space and time: implications for conservation targeting.

Demographic variation in space and time: implications for conservation targeting.
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DOI:
10.1098/rsos.211671
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发表时间:
2022-03
影响因子:
3.5
通讯作者:
Gill JA
Gill JA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Morrison CA;Butler SJ;Clark JA;Arizaga J;Baltà O;Cepák J;Nebot AL;Piha M;Thorup K;Wenninger T;Robinson RA;Gill JA

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野生种群的动态是由在空间和/或时间上响应环境条件而变化的人口统计率决定的。保护行动的广泛,但下降的人口可能会利用这种变化的目标位置(或年)的利率低,但只有在一致的空间或时间变化的人口发生率。使用欧洲各地野生鸟类的长期人口统计数据,我们发现,生产力往往会因地点而异(一致跨年),而生存率往往会因地点而异(一致跨网站),空间同步性是更常见的生存比生产力。因此,确定与低人口死亡率相关的条件可以促进有空间针对性的行动,以提高生产力或(不太可行的)预测和有时间针对性的行动,以提高生存率。因此,分解人口的时空变化可以成为一个强大的工具,为保护政策提供信息,并揭示适当的规模,影响人口率的行动。
The dynamics of wild populations are governed by demographic rates which vary spatially and/or temporally in response to environmental conditions. Conservation actions for widespread but declining populations could potentially exploit this variation to target locations (or years) in which rates are low, but only if consistent spatial or temporal variation in demographic rates occurs. Using long-term demographic data for wild birds across Europe, we show that productivity tends to vary between sites (consistently across years), while survival rates tend to vary between years (consistently across sites), and that spatial synchrony is more common in survival than productivity. Identifying the conditions associated with low demographic rates could therefore facilitate spatially targeted actions to improve productivity or (less feasibly) forecasting and temporally targeting actions to boost survival. Decomposing spatio-temporal variation in demography can thus be a powerful tool for informing conservation policy and for revealing appropriate scales for actions to influence demographic rates.
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