Dissertation/Thesis Abstract

Benthic oxygen production in the Choptank Estuary
by Chick, Christopher Roberts, M.S., University of Maryland, College Park, 2009, 79; 1474307
Abstract (Summary)

This study estimates the proportion of microphytobenthic (MPB) primary production to total primary production in the Chesapeake Bay using oxygen fluxes from sediment cores. Flux rates ranged from 6000 μmol O2 m-2 h-1 in the light to - 3800 μmol O 2 m-2 h-1 in the dark. Using this data, we developed multiple linear regressions using sediment grain type and depth to predict oxygen production seasonally. Using ArcMap software, we estimated summer average benthic daily net production to be 123 ± 962 mg O 2 m-2 d-1 between 0-3 meters and winter was estimated to be 152 ± 413 mg O2 m-2 d -1. For spring we had a weaker relationship, but benthic production was -257 ± 123 mg O2 m-2 d-1. A proportion of benthic to pelagic primary production was created, estimating that MPB provide approximately 12% of total primary production in the Chesapeake Bay.

Indexing (document details)
Advisor: Cornwell, Jeffrey C.
Commitee: Fisher, Tom R., Kana, Todd M.
School: University of Maryland, College Park
Department: Marine-Estuarine-Environmental Sciences
School Location: United States -- Maryland
Source: MAI 48/04M, Masters Abstracts International
Source Type: DISSERTATION
Subjects: Environmental science
Keywords: Benthic, Benthic microalgae, Chesapeake Bay, Microphytobenthos
Publication Number: 1474307
ISBN: 978-1-109-63425-9
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