1. Crayfish play a crucial ecological role and are often considered a keystone species within freshwater ecosystems; however, North American crayfish species face disturbance and ecological threats including invasive species and intensified drought.
2. Demographic models can allow examination of population dynamics of a targeted species under a wide variety of disturbance scenarios. In this study, crayfish population dynamics were modelled and their responses to simulated biological invasions and drought were assessed.
3. As life history data on crayfish are relatively rare, models were used to explore the population viability of four generalized species with distinct life history strategies under 11 disturbance scenarios. RAMAS‐Metapop was used to construct stage‐based demographic metapopulation models parameterized using vital rates from established literature sources.
4. Models indicated that populations respond differentially to disturbance based on life history. However, both r‐ and K‐selected species appear to be highly susceptible to decline when faced with the additive effects of reduced carrying capacity resulting from invasion and reduced survival rates caused by drought.
5. Constructing models that explore a broad array of life histories and disturbance regimes can provide managers with tools to develop generalized, widely applicable conservation strategies in data‐depauperate systems.

中文翻译：

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干扰对广义小龙虾生活史策略种群动态的影响

1. 小龙虾起着至关重要的生态作用，通常被认为是淡水生态系统中的关键物种。然而，北美小龙虾物种面临干扰和生态威胁，包括入侵物种和加剧的干旱。
2. 人口统计学模型可以检查各种干扰情况下目标物种的种群动态。在这项研究中，对小龙虾种群动态进行了建模，并评估了它们对模拟生物入侵和干旱的反应。
3. 由于小龙虾的生活史数据相对较少，因此在11种干扰情景下，使用模型探索了具有不同生活史策略的四个广义物种的种群生存力。RAMAS-Metapop用于构建基于阶段的人口统计学人口模型，该模型使用已建立的文献资料中的生命率进行参数化。
4. 模型表明，根据生活史，人群对干扰的反应不同。但是，r和K选择的物种在面临入侵带来的承载力下降和干旱造成的存活率下降的累加效应时，似乎都极易受到衰退的影响。
5. 建立探索广泛的生活史和骚扰制度的模型，可以为管理人员提供工具，以在数据贫乏的系统中开发通用的，广泛适用的保护策略。