Seagrass sediments reveal the long-term deterioration of an estuarine ecosystem
- Serrano, Oscar
- Lavery, Paul S.
- Masqué, Pere
- Inostroza, Karina
- Bongiovanni, J.
- Duarte, Carlos M.
DOIAbstract
Este artículo contiene 9 páginas, 2 tablas, 3 figuras.The study of a Posidonia australis sediment archive has provided a record of ecosystem dynamics and processes over the last 600 years in Oyster Harbour (SW Australia). Ecosystem shifts are a widespread phenomenon in coastal areas, and this study identifies baseline conditions and the time-course of ecological change (cycles, trends, resilience and thresholds of ecosystem change) under environmental stress in seagrass-dominated ecosystem. The shifts in the concentrations of chemical elements, carbonates, sediments <0.125 mm and stable carbon isotope signatures (d13C) of the organic matter were detected between 1850s and 1920s, whereas the shift detected in P concentration occurred se...
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