Helfer, Veronique, Pennings, Steven C., Armitage, Anna and Zimmer, Martin (2019) Changes in Mangrove Forest Cover and Their Effect on Community Composition, Ecosystem Processes and Spatial Subsidies. [Talk] In: MMM5. , 01.07.-05.07.2019, Singapore .

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Abstract

Mangrove trees shape their physical, chemical and biological environment: their roots trap sediments, take up and release chemical compounds from and into the sediments and the surrounding water; their canopy produces shade; and their leaf litter is a source of nutrients for detritivores and microbes. All this affects the composition of associated microbiota (bacteria, archaea, fungi, protists) and fauna, as well as the processes that are driven by these organisms, such as organic matter (OM) turnover and carbon cycling. Moreover, because mangroves both produce organic matter and trap organic matter from other sources (marsh plants, seagrasses, algae), mangrove trees also shape the nature and abundance of organic matter subsidies. We took advantage of a large-scale experiment manipulating the cover of mangroves versus marsh plants to assess how changes in mangrove forest cover affected 1) associated microbial and faunal communities, assessed via metabarcoding of environmental DNA in the sediment, and 2) the content, structure (assessed via pyrolysis-gas chromatography-mass spectrometry) and origin of OM in the sediments. From this, we infer how changes in mangrove forest structure affect ecosystem processes, particularly OM dynamics.

Document Type: Conference or Workshop Item (Talk)
Research affiliation: Affiliations > Not ZMT
Ecology > Mangrove Ecology
Date Deposited: 21 Oct 2019 10:23
Last Modified: 01 Oct 2020 12:59
URI: http://cris.leibniz-zmt.de/id/eprint/2776

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