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Linking Microbial Decomposer Diversity to Plant Litter Decomposition and Associated Processes in Streams

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The Ecology of Plant Litter Decomposition in Stream Ecosystems

Abstract

The physiology, biochemistry and diversity of aquatic microbial decomposers have been largely investigated in low-order streams. However, some aspects still need further attention to better ascertain how microbial decomposer diversity can ensure ecosystem processes and services, particularly under the challenges posed by global environmental change. Aquatic microbial decomposers play a key role in processing plant litter in streams by degrading the most recalcitrant compounds and facilitating nutrient and energy transfer to higher trophic levels. Among microbial decomposers, fungi, particularly aquatic hyphomycetes, play a fundamental role at the early stages of plant litter decomposition, while the relevance of bacteria increases at the late stage of the decomposition. High-throughput sequencing and metagenomic techniques open new avenues towards a more comprehensive understanding of microbial decomposer ecology. This chapter provides a general overview of aquatic microbial diversity and activity on decomposing plant litter. Attention will be paid to the relationships between microbial diversity and their ecological functions under the major threats posed by the ongoing global environmental change to provide the response patterns of microbial decomposers to maintain nutrient and energy fluxes in streams.

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Authors and Affiliations

  1. Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, Braga, Portugal

    Cláudia Pascoal, Isabel Fernandes & Fernanda Cássio

  2. Institute of Science and Innovation for Bio‐Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, Portugal

    Cláudia Pascoal, Isabel Fernandes & Fernanda Cássio

  3. MARE – Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Coimbra, Portugal

    Sahadevan Seena & Verónica Ferreira

  4. Laboratoire Interdisciplinaire Des Environnements Continentaux, Université de Lorraine – Centre National de la Recherche Scientifique, Metz, France

    Michael Danger

  5. LTSER France, Zone Atelier du Bassin de La Moselle, Vandoeuvre-lès-Nancy, France

    Michael Danger

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  1. Cláudia Pascoal
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  2. Isabel Fernandes
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  3. Sahadevan Seena
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  4. Michael Danger
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  5. Verónica Ferreira
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  6. Fernanda Cássio
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Corresponding author

Correspondence to Cláudia Pascoal .

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Editors and Affiliations

  1. Geography and Environmental Sciences, University of Maryland Baltimore County, Baltimore, MD, USA

    Christopher M. Swan

  2. Faculty of Science and Technology, University of the Basque Country, Leioa, Bizkaia, Spain

    Luz Boyero

  3. Department of Life Sciences, University of Coimbra, Centre for Functional Ecology, Coimbra, Portugal

    Cristina Canhoto

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Pascoal, C., Fernandes, I., Seena, S., Danger, M., Ferreira, V., Cássio, F. (2021). Linking Microbial Decomposer Diversity to Plant Litter Decomposition and Associated Processes in Streams. In: Swan, C.M., Boyero, L., Canhoto, C. (eds) The Ecology of Plant Litter Decomposition in Stream Ecosystems. Springer, Cham. https://doi.org/10.1007/978-3-030-72854-0_9

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