ArticleISME communications2025
Warming degrades nutritional quality of periphyton in stream ecosystems: evidence from a mesocosm experiment.
Article in ISME communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Periphyton, which is rich in polyunsaturated fatty acids (PUFA), serves as an indispensable high-quality basal resource for consumers in stream food webs. However, with global warming, how fatty acid composition of periphyton changes and consequent effects on their transfer to higher trophic level consumers remain unclear. By carrying out a manipulative mesocosm experiment with a 4°C increase, warming led to a significant decrease in the proportions of PUFA and Long-chain PUFA (LC-PUFA, >20 C) in periphyton from 13.32% to 9.90% and from 3.05% to 2.18%, respectively. The proportions of three PUFAs-α-linolenic acid (18:3ω3), arachidonic acid (ARA, 20:4ω6), and docosahexaenoic acid (22:6ω3)-also declined significantly (
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