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Functional sustainability of nutrient accumulation by periphytic biofilm under temperature fluctuations

Sun, Rui; Xu, Ying; Wu, Yonghong; Tang, Jun; Esquivel-Elizondo, Sofia; Kerr, Philip G.; Staddon, Philip L. and Liu, Junzhuo (2019). Functional sustainability of nutrient accumulation by periphytic biofilm under temperature fluctuations. Environmental Technology (Early Access).

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Temperature can fluctuate widely between different seasons, and this may greatly impact many biological processes. However, little is known about its influence on the functioning of benthic microbial communities. Here we investigated the nutrient accumulation capability of periphytic biofilm under temperature fluctuations (17–35°C). Periphytic biofilm maintained the same nutrient accumulation capacity after experiencing the ‘warming-hot-cooling’ temperature fluctuation under both lab and outdoor conditions as those without temperature disturbance. In response to temperature increase, both community composition and species richness changed greatly and the increase in biodiversity was identified as being the underlying mechanism boosting the sustainable function in nutrient accumulation, indicating zero net effects of community changes. These findings provide insights into the underlying mechanisms of how benthic microbial communities adapt to temperature fluctuations to maintain nutrient accumulation capacity and elucidate that periphytic biofilm plays important roles in influencing nutrient cycling in aquatic ecosystems under temperature changes such as seasonal fluctuations.

Item Type: Journal Item
Copyright Holders: 2019 Informa UK Limited, trading as Taylor & Francis Group
ISSN: 0959-3330
Keywords: periphytic biofilm; functional redundancy; nutrient accumulation; community structure; temperature fluctuation
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 66402
Depositing User: ORO Import
Date Deposited: 05 Sep 2019 10:25
Last Modified: 20 Nov 2019 21:12
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