Sources and fate of organic matter in constructed versus natural coastal waterways
| Autor: | Thi Hong Hanh Bui, Shin Yip Lee, Kylie A. Pitt, Rod M. Connolly, Nic Doriean |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Geologic Sediments 010504 meteorology & atmospheric sciences Wetland Aquatic Science Oceanography 01 natural sciences Water Quality Sedimentary organic matter Ecosystem Organic matter Organic Chemicals 0105 earth and related environmental sciences Isotope analysis Total organic carbon chemistry.chemical_classification geography geography.geographical_feature_category Ecology 010604 marine biology & hydrobiology Fatty Acids fungi Hypoxia (environmental) Pollution Lakes chemistry Wetlands Environmental science Water quality |
| Zdroj: | Marine Pollution Bulletin. 135:505-513 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2018.07.044 |
| Popis: | Coastal wetlands are increasingly being converted into canal estates with potential consequences for ecosystem functioning. We compared the sources and fate of organic matter and water quality at four types of canal habitats (entrances and ends of canals, canal lakes and lake edges) and shallow and deep natural habitats (four replicates of each habitat). The fate of labile organic matter was assessed by measuring rates of scavenging of carrion. Surface sediments were analysed for organic carbon content and stable carbon isotopes, fatty acid biomarkers and compound specific stable isotope analysis of selected fatty acids were used to elucidate sources of sedimentary organic matter. Canal lakes differed from other habitats and were characterised by negligible scavenging, larger quantities of organic matter comprised of higher contributions from diatoms, and hypoxia. Despite some trends, natural habitats were statistically indistinguishable from canal entrances and ends. Variation among replicate habitats was large. |
| Databáze: | OpenAIRE |
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