Cross-continental analysis of coastal biodiversity change
| Autor: | Helmut Hillebrand, Gavin M. Rishworth, Matthew S. Bird, Andreas Dänhardt, Nicola K. Carrasco, Janine B. Adams, Gregor Scheiffarth, Jennifer Dannheim, Daniel A. Lemley, Pierre A. Pistorius |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Marine conservation Biodiversity species turnover Corrections 010603 evolutionary biology 01 natural sciences Zooplankton General Biochemistry Genetics and Molecular Biology South Africa Diversity index temporal trends Germany Animals Ecosystem 14. Life underwater Taxonomic rank Atlantic Ocean Indian Ocean Relative species abundance Ecology 010604 marine biology & hydrobiology long-term monitoring Articles 15. Life on land Invertebrates Geography Taxon dissimilarity Phytoplankton Vertebrates North Sea Species richness General Agricultural and Biological Sciences Research Article |
| Zdroj: | Philosophical Transactions of the Royal Society B: Biological Sciences Philos Trans R Soc Lond B Biol Sci |
| ISSN: | 1471-2970 0962-8436 |
| Popis: | Whereas the anthropogenic impact on marine biodiversity is undebated, the quantification and prediction of this change are not trivial. Simple traditional measures of biodiversity (e.g. richness, diversity indices) do not capture the magnitude and direction of changes in species or functional composition. In this paper, we apply recently developed methods for measuring biodiversity turnover to time-series data of four broad taxonomic groups from two coastal regions: the southern North Sea (Germany) and the South African coast. Both areas share geomorphological features and ecosystem types, allowing for a critical assessment of the most informative metrics of biodiversity change across organism groups. We found little evidence for directional trends in univariate metrics of diversity for either the effective number of taxa or the amount of richness change. However, turnover in composition was high (on average nearly 30% of identities when addressing presence or absence of species) and even higher when taking the relative dominance of species into account. This turnover accumulated over time at similar rates across regions and organism groups. We conclude that biodiversity metrics responsive to turnover provide a more accurate reflection of community change relative to conventional metrics (absolute richness or relative abundance) and are spatially broadly applicable. This article is part of the theme issue ‘Integrative research perspectives on marine conservation’. |
| Databáze: | OpenAIRE |
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