Simple, Universal Rules Predict Trophic Interaction Strengths

IF 7.6 1区 环境科学与生态学 Q1 ECOLOGY
Ecology Letters Pub Date : 2025-04-30 DOI:10.1111/ele.70126
Kyle E. Coblentz, Mark Novak, John P. DeLong
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引用次数: 0

Abstract

Many drivers of ecological systems exhibit regular scaling relationships, yet the mechanisms explaining these relationships are often unknown. Trophic interaction strengths are no exception, exhibiting scaling relationships with predator and prey traits that lack evolutionary explanations. We propose two rules to explain the scaling of trophic interaction strengths through the relationship between a predator's feeding rate and its prey's density—the so-called predator functional response. First, functional responses allow predators to meet their energetic demands when prey are rare. Second, functional responses approach their maxima near the highest prey densities predators experience. We show that equations derived from these rules predict functional response parameters across over 2100 functional response experiments and make additional predictions such as their allometric scaling. The two rules thereby offer a potential ultimate explanation for the determinants of trophic interaction strengths, revealing ecologically realised constraints to the complex, adaptive nature of functional response evolution.

Abstract Image

简单、通用的规则预测营养交互强度
生态系统的许多驱动因素表现出规律的尺度关系,但解释这些关系的机制往往是未知的。营养相互作用强度也不例外,表现出与捕食者和猎物特征的比例关系,缺乏进化的解释。我们提出了两个规则来解释通过捕食者的摄食率和猎物的密度之间的关系的营养相互作用强度的尺度-所谓的捕食者功能反应。首先,功能反应允许捕食者在猎物稀少时满足能量需求。其次,在捕食者经历的最高猎物密度附近,功能反应接近最大值。我们表明,从这些规则推导出的方程预测了2100多个功能响应实验中的功能响应参数,并做出了额外的预测,如它们的异速缩放。因此,这两个规则为营养相互作用强度的决定因素提供了一个潜在的最终解释,揭示了功能反应进化的复杂性和适应性本质的生态学实现约束。
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来源期刊
Ecology Letters
Ecology Letters 环境科学-生态学
CiteScore
17.60
自引率
3.40%
发文量
201
审稿时长
1.8 months
期刊介绍: Ecology Letters serves as a platform for the rapid publication of innovative research in ecology. It considers manuscripts across all taxa, biomes, and geographic regions, prioritizing papers that investigate clearly stated hypotheses. The journal publishes concise papers of high originality and general interest, contributing to new developments in ecology. Purely descriptive papers and those that only confirm or extend previous results are discouraged.
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