Comparing trophic levels estimated from a tropical marine food web using an ecosystem model and stable isotopes
| Autor: | Petrus Christianus Makatipu, Daniel Pauly, Jianguo Du, Bin Chen, Teguh Peristiwady, Jianji Liao, William W. L. Cheung, Lily S. R. Tao |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences biology Stable isotope ratio Ecology 010604 marine biology & hydrobiology Aquatic Science Oceanography biology.organism_classification 01 natural sciences Food web Ecosystem model Isotopes of carbon Environmental science EcoSim 0105 earth and related environmental sciences Isotope analysis Coral trout Trophic level |
| Zdroj: | Estuarine, Coastal and Shelf Science. 233:106518 |
| ISSN: | 0272-7714 |
| DOI: | 10.1016/j.ecss.2019.106518 |
| Popis: | Comparing the outputs of food web models with those from other independent approaches is necessary to build confidence in the use of these models to help manage fisheries. Mass-balance models such as Ecopath with Ecosim (EwE) and stable isotope analysis are widely used to describe food webs, but the results from these methodologies are rarely compared. In this study, an Ecopath model was developed to study the food web in the Bitung area, North Sulawesi, Indonesia and compare it with results from stable isotopes. Stable isotope data were available for 19 out of 50 functional groups defined in the model, including fishes, crustaceans, squids, sea cucumbers and other invertebrates. The trophic levels and niches of these functional groups estimated from the Ecopath model were compared with those calculated from nitrogen and carbon isotope data. The trophic levels of 19 functional groups were estimated to range from 2.00 (sea cucumber) to 3.84 (coral trout). Trophic levels estimated from Ecopath were correlated with those derived from stable isotopes (r2spearman = 0.71, n = 19, p |
| Databáze: | OpenAIRE |
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