Warming increases the strength of trophic cascades.

Warming increases the strength of trophic cascades. | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 3 December 2025 V2 Latest version Share on Warming increases the strength of trophic cascades. Authors : Francis Biagioli 0009-0001-2010-622X [email protected] , Kyle Coblentz 0000-0002-0069-8491 , Liuqingqing Yang , Dinelka Thilakarathne 0000-0003-2585-2288 , and John DeLong 0000-0003-0558-8213 Authors Info & Affiliations https://doi.org/10.22541/au.174768339.96187611/v2 401 views 186 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract 1. Trophic cascades play a central role in shaping ecosystems, yet how the strength of a trophic cascade responds to warming remains unclear. Because species’ demographics and trophic interaction strengths are temperature sensitive, climate change is expected to alter cascade strengths, with potentially widespread ecological consequences. 2. We experimentally tested how temperature affects trophic cascade strength by manipulating the presence of the predator Hydra oligactis and tracking the abundances of its prey, Ceriodaphnia reticulata , and primary producer, Ankistrodesmus falcatus , across a temperature gradient. 3. To uncover the mechanisms driving these changes, we complemented the experiments with mathematical models fit to the population dynamics, providing novel insight into why trophic cascade strength changes with warming. 4. We predicted that warming would strengthen trophic cascades by increasing direct consumer–resource interaction strengths. Our results supported this prediction, but we also found that higher temperatures amplified population fluctuations, driven by the combined temperature dependence of nearly all the model parameters. 5. Our findings show that climate warming can strengthen trophic cascades, destabilize population dynamics, and magnify the ecological impacts of predator loss through complex, temperature-dependent changes in species interactions and demographics. Supplementary Material File (biagioli_jae_final.docx) Download 1.40 MB Information & Authors Information Version history V1 Version 1 19 May 2025 V2 Version 2 03 December 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords consumer-resource interactions daphnia global climate change hydra indirect effects predator-prey interactions species interactions stability top-down and bottom-up effects trait-mediated effects Authors Affiliations Francis Biagioli 0009-0001-2010-622X [email protected] University of Nebraska-Lincoln View all articles by this author Kyle Coblentz 0000-0002-0069-8491 University of Nebraska-Lincoln View all articles by this author Liuqingqing Yang University of Nebraska-Lincoln View all articles by this author Dinelka Thilakarathne 0000-0003-2585-2288 University of Nebraska-Lincoln View all articles by this author John DeLong 0000-0003-0558-8213 University of Nebraska-Lincoln View all articles by this author Metrics & Citations Metrics Article Usage 401 views 186 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Francis Biagioli, Kyle Coblentz, Liuqingqing Yang, et al. Warming increases the strength of trophic cascades.. Authorea . 03 December 2025. 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