Large variations in eutrophication among estuaries reflect massive differences in composition and biomass of macroalgal drift
| Autor: | Thomas H. Rose, John M. Huisman, Ainslie Denham, James R. Tweedley, Ian C. Potter, Norman G. Hall |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
food.ingredient 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences food Nutrient Dry weight South Australia Biomass 0105 earth and related environmental sciences Biomass (ecology) geography geography.geographical_feature_category biology Ecology 010604 marine biology & hydrobiology Hypnea Estuary Western Australia Eutrophication biology.organism_classification Pollution Salinity Environmental science Estuaries Chaetomorpha |
| Zdroj: | Marine pollution bulletin. 167 |
| ISSN: | 1879-3363 |
| Popis: | The characteristics of detached macroalgae (drift) in nearby highly eutrophic and mesotrophic estuaries in south-western Australia are compared to elucidate the magnitude and types of changes that occur in macroalgal drift when estuaries receive excessive nutrient input. Drift characteristics in the large basins of the microtidal, eutrophic Peel-Harvey and mesotrophic Swan-Canning, which is not subjected to large nutrient inputs directly from agricultural land, differed markedly. Biomass (dry weight) in mesotrophic estuary was dominated by rhodophytes (92%), particularly Laurencia and Hypnea, and in eutrophic estuary by opportunistic chlorophytes (68%), especially Chaetomorpha and Ulva. Prevalence and biomass of drift were far greater in the eutrophic estuary, particularly during summer and autumn when macroalgal growth rose sharply. Macroalgal biomass in the eutrophic estuary was positively related to salinity. These results facilitate predictions of how climatic and other anthropogenic changes influence extent of macroalgal growth and thus change the estuarine environment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect