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期刊名称: Acta Ecologica Sinica
Volume:37    Issue:2        Page:97-104

Determination of food sources and trophic position in Malaysian tropical highland streams using carbon and nitrogen stable isotopes期刊论文

作者: Ridzuan Dhiya Shafiqah Rawi Che Salmah Md Hamid Suhaila Abdul Al-Shami Salman Abdo

页码: 97-104
出版者: Elsevier B.V
期刊名称: Acta Ecologica Sinica
ISSN: 1872-2032
卷期: Volume:37    Issue:2
摘要: Stable isotope analysis has been extensively used as an effective tool in determination of trophic relationship in ecosystems. In freshwater ecosystem, aquatic invertebrates represent main component of a river food web. This study was carried out to determine potential food sources of freshwater organism together with pattern of trophic position along the river food web. In this study, rivers of Belum-Temengor Forest Complex (BTFC) has been selected as sampling site as it is a pristine area that contains high diversity and abundance of organisms and can be a benchmark for other rivers in Malaysia. Stable isotope ratios of carbon ( C) and nitrogen ( N) were applied to estimate trophic position and food web paradigm. Analysis of stable isotopes based on organic material collected from the study area revealed that the highest C value was reported from filamentous algae (− 22.68 ± 0.126 / ) and the lowest C was in allocthonous leaf packs (− 31.58 ± 0.187 / ). Meanwhile the highest N value was in fish (8.45 ± 0.177 / ) and the lowest value of N was in autochthonous aquatic macrophyte (2.00 ± 1.234 / ). Based on the N results, there are three trophic levels in the study river and it is suggested that the trophic chain begins with organic matter followed by group of insects and ends with fish (organic matter < insects < fish).
相关主题: δ15N, Trophic position, Stable isotope, δ13C, Aquatic invertebrates,






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