Dissertation/Thesis Abstract

Effects of sea level rise on decomposers in a restored coastal salt marsh
by McLain, Nathan K., M.S., California State University, Long Beach, 2015, 94; 1595237
Abstract (Summary)

Many southern California coastal salt marshes are urbanized and heavily impacted, but still provide important ecosystem services, including carbon and nutrient cycling. Salt marsh community structure and functions, such as decomposition, are essential for marsh ecosystems and are potentially vulnerable to inundation impacts created by sea level rise (SLR). The saltmarsh communities driving decomposition are comprised of invertebrates, fungi, and bacteria, which may be susceptible to SLR. In this project, inundation of saltmarsh sediments with associated plants and rhizosphere were manipulated using a marsh organ to assess the impacts of SLR on decomposer activity (leaf litter decay, anaerobic respiration) and community structure (bacterial and benthic invertebrate). Marsh organ samples across all inundation treatments showed altered decomposer community diversity and function compared to controls, indicating disturbance. However in some cases there were no significant differences between communities among SLR treatments. However, inundation effects may have been obscured by marsh organ artifacts.

Indexing (document details)
Advisor: Dillon, Jesse G.
Commitee: Keller, Jason K., Whitcraft, Christine R.
School: California State University, Long Beach
Department: Biological Sciences
School Location: United States -- California
Source: MAI 54/06M(E), Masters Abstracts International
Subjects: Biology, Ecology
Keywords: Bacteria, Invertebrates, Marsh organ, Saltmarsh, Sea level rise, Wetland
Publication Number: 1595237
ISBN: 978-1-321-93619-3
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