Statistical Power and the Effects of Old, Wise and Large Fish

IF 6.3 1区农林科学 Q1 FISHERIES

Fish and Fisheries Pub Date : 2026-08-25 DOI:10.1111/faf.70113

Øystein Langangen, Nicolas Dupont, Jan Heuschele, Joël M. Durant

引用次数: 0

Abstract

Currently, a major concern for fish populations is their declining resilience to climate events, reduced individual sizes and productivity and increased instability. Population dynamics of fish are often dominated by recruitment, i.e., the number of young fish entering the population. The contribution of old and large female fish (often denoted BOFFs) to recruitment is expected to be disproportionately large; however, the importance is still debated. There is currently a move to expand quantitative knowledge of the effects of BOFFs on recruitment to better cover the thousands of fish species and populations worldwide. Here, we show, using simulations, that time‐series length and uncertainty often reduce the statistical power to levels where the effects are no longer detectable. We suggest system‐specific methods evaluation to reduce the risks of erroneous conclusions.

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统计力量和老、聪明、大的鱼的影响

目前，鱼类种群的一个主要问题是它们对气候事件的适应能力下降，个体大小和生产力下降以及不稳定性增加。鱼类的种群动态通常由招募决定，即幼鱼进入种群的数量。年老和大型雌鱼（通常称为boff）对征聘的贡献预计将不成比例地大；然而，其重要性仍存在争议。目前正在采取行动，扩大对booff对征聘影响的定量认识，以便更好地涵盖全世界数以千计的鱼类和种群。在这里，我们通过模拟表明，时间序列长度和不确定性通常会将统计能力降低到无法检测到的水平。我们建议系统特定的评估方法，以减少错误结论的风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fish and Fisheries 农林科学-渔业

CiteScore

12.80

自引率

6.00%

发文量

期刊介绍： Fish and Fisheries adopts a broad, interdisciplinary approach to the subject of fish biology and fisheries. It draws contributions in the form of major synoptic papers and syntheses or meta-analyses that lay out new approaches, re-examine existing findings, methods or theory, and discuss papers and commentaries from diverse areas. Focal areas include fish palaeontology, molecular biology and ecology, genetics, biochemistry, physiology, ecology, behaviour, evolutionary studies, conservation, assessment, population dynamics, mathematical modelling, ecosystem analysis and the social, economic and policy aspects of fisheries where they are grounded in a scientific approach. A paper in Fish and Fisheries must draw upon all key elements of the existing literature on a topic, normally have a broad geographic and/or taxonomic scope, and provide general points which make it compelling to a wide range of readers whatever their geographical location. So, in short, we aim to publish articles that make syntheses of old or synoptic, long-term or spatially widespread data, introduce or consolidate fresh concepts or theory, or, in the Ghoti section, briefly justify preliminary, new synoptic ideas. Please note that authors of submissions not meeting this mandate will be directed to the appropriate primary literature.