Explaining variation in stream fish productivity with biotic and abiotic variables across wadeable rivers in eastern North America

IF 2.8 2区生物学 Q2 ECOLOGY Freshwater Biology Pub Date : 2024-04-06 DOI:10.1111/fwb.14247

Ian A. Richter, Donald A. Jackson, Nicholas E. Jones

引用次数: 0

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用生物和非生物变量解释北美东部可涉水河流中溪流鱼类生产力的变化

生物量生产是一个关键的生态系统过程，它能让人们深入了解生长、繁殖、死亡和能量分布等生态过程。以往的研究将物种丰富度、丰度和/或生物量等各种鱼类响应指标视为河流生态系统或特定物种生产力的响应变量。然而，很少有研究调查河流系统的总体鱼类生产力如何受到环境变量的影响。在此，我们确定了可涉水的温带河流系统中鱼类生产力的重要非生物和生物预测因子。我们研究了加拿大安大略省可涉水河流流域鱼类总产量与多种非生物和生物变量之间的关系。采用方差分配法评估了生物、景观、气候和地质变量对溪流鱼类总产量的相对重要性。在模型选择过程中使用了改良的自举法，并对经验鱼类生产力模型进行参数化。我们发现，相对于非生物变量，生物预测因子能解释更多的生产力变化。最佳的经验模型包括年月日、生长度日、纬度、鲑鱼存在/不存在、物种丰富度和上游集水区。我们的研究结果表明，将生物变量和非生物变量结合起来，可以为了解不同生态系统的生态过程（如鱼类生产力）差异提供有价值的信息。物种丰富度和组合特征的差异可能是决定溪流系统整体鱼类生产力的关键因素。我们的模型可以通过鲑鱼的存在/缺失数据和物种丰富度总量来估算生产力，而不是需要大量采样工作的鱼类丰度数据。

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来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.