Diverging response patterns of terrestrial and aquatic species to hydromorphological restoration
| Autor: | Armin W. Lorenz, Kathrin Januschke, Peter Haase, Daniel Hering, Jonas Jourdan, Andrea Sundermann, Francesca Pilotto, Stefan Stoll, Jonathan D. Tonkin |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Conservation of Natural Resources integumentary system Ecology 010604 marine biology & hydrobiology fungi Fishes Biota 010603 evolutionary biology 01 natural sciences Aquatic species Rivers Germany Animals Environmental science Biologie Restoration ecology Ecosystem Ecology Evolution Behavior and Systematics Nature and Landscape Conservation |
| Zdroj: | Conservation Biology. 33:132-141 |
| ISSN: | 1523-1739 0888-8892 |
| DOI: | 10.1111/cobi.13176 |
| Popis: | Although experiences with ecological restoration continue to accumulate, the effectiveness of restoration for biota remains debated. We complemented a traditional taxonomic analysis approach with information on 56 species traits to uncover the responses of 3 aquatic (fish, macroinvertebrates, macrophytes) and 2 terrestrial (carabid beetles, floodplain vegetation) biotic groups to 43 hydromorphological river restoration projects in Germany. All taxonomic groups responded positively to restoration, as shown by increased taxonomic richness (10-164%) and trait diversity (habitat, dispersal and mobility, size, form, life history, and feeding groups) (15-120%). Responses, however, were stronger for terrestrial than aquatic biota, and, contrary to our expectation, taxonomic responses were stronger than those of traits. Nevertheless, trait analysis provided mechanistic insights into the drivers of community change following restoration. Trait analysis for terrestrial biota indicated restoration success was likely enhanced by lateral connectivity and reestablishment of dynamic processes in the floodplain. The weaker response of aquatic biota suggests recovery was hindered by the persistence of stressors in the aquatic environment, such as degraded water quality, dispersal constraints, and insufficient hydromorphological change. Therefore, river restoration requires combined local- and regional-scale approaches to maximize the response of both aquatic and terrestrial organisms. Due to the contrasting responses of aquatic and terrestrial biota, the planning and assessment of river restoration outcomes should consider effects on both components of riverine landscapes. |
| Databáze: | OpenAIRE |
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