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Assessing the likely effectiveness of multispecies management for imperiled desert fishes with niche overlap analysis

机译：利用生态位重叠分析评估受威胁的沙漠鱼类的多物种管理的可能有效性

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摘要

A critical decision in species conservation is whether to target individual species or a complex of ecologically similar species. Management of multispecies complexes is likely to be most effective when species share similar distributions, threats, and response to threats. We used niche overlap analysis to assess ecological similarity of 3 sensitive desert fish species currently managed as an ecological complex. We measured the amount of shared distribution of multiple habitat and life history parameters between each pair of species. Habitat use and multiple life history parameters, including maximum body length, spawning temperature, and longevity, differed significantly among the 3 species. The differences in habitat use and life history parameters among the species suggest they are likely to respond differently to similar threats and that most management actions will not benefit all 3 species equally. Habitat restoration, frequency of stream dewatering, non-native species control, and management efforts in tributaries versus main stem rivers are all likely to impact each of the species differently. Our results demonstrate that niche overlap analysis provides a powerful tool for assessing the likely effectiveness of multispecies versus single-species conservation plans. Evaluacion de la Posible Efectividad del Manejo Multi-Especie paraPeces de Desierto en Peligro Mediante el Analisis de Traslape de Nichos
机译：物种保护的关键决策是针对单个物种还是生态相似物种的复合体。当物种具有相似的分布，威胁和对威胁的响应时，多物种复合体的管理可能是最有效的。我们使用生态位重叠分析来评估目前作为生态复合体管理的3种敏感沙漠鱼类的生态相似性。我们测量了每对物种之间多个栖息地和生活史参数的共享分布量。这三个物种之间的栖息地使用和多种生活史参数（包括最大体长，产卵温度和寿命）存在显着差异。物种之间的栖息地使用和生活史参数的差异表明，它们对相似威胁的反应可能不同，并且大多数管理措施将不会平等地使所有三个物种受益。栖息地的恢复，溪流脱水的频率，非本地物种的控制以及支流与主要干河的管理努力都可能对每个物种产生不同的影响。我们的结果表明，生态位重叠分析为评估多物种保护计划与单物种保护计划的有效性提供了有力的工具。可能产生的影响评估多品种特殊目的国人民日报

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