Effects of climate and eutrophication on the diversity of hard bottom communities on the Skagerrak coast 1990-2010
| العنوان: | Effects of climate and eutrophication on the diversity of hard bottom communities on the Skagerrak coast 1990-2010 |
|---|---|
| المؤلفون: | Mats Walday, Birger Bjerkeng, Anna Birgitta Ledang, Frithjof E. Moy, Janne Kim Gitmark, Dag Ø. Hjermann, Norman Whitaker Green, Are Pedersen, Kjell Magnus Norderhaug, Hege Gundersen, Hilde Cecilie Trannum |
| المصدر: | Marine Ecology Progress Series |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Ecology, Fauna, Biodiversity, Community structure, Climate change, Aquatic Science, Oceanography, Benthic zone, Environmental science, Ecosystem, Species richness, Eutrophication, Ecology, Evolution, Behavior and Systematics |
| الوصف: | Eutrophication is one of the most serious environmental problems in the Skagerrak, and climate change may increase eutrophication in the future. This study focused on the effects of eutrophication and climate, and the interactions between these 2 factors, on biodiversity in rocky bottom communities on the outer Skagerrak coast. Monitoring data from the period 1990 to 2010 including macroalgae, sessile fauna and physical and hydrochemical data were analysed. In total, 45% of the total variance in the communities could be explained by physical factors and factors related to climate and eutrophication. The most important factors regulating species richness, diversity and community structure were wave exposure level and other factors varying with depth and biogeographical region. The benthic ecosystems were overall dominated by perennial and annual algae and rich communities of sessile macroinvertebrates. Climate variation and eutrophi- cation variables had small but consistent impacts on the communities. Periods with high particle concentrations and with extreme temperatures negatively impacted benthic diversity. The responses to nutrients were variable and dependant on season and species. In January, when mea- surements best reflect available nutrients in the system, the species richness and diversity responses were concave, with the greatest richness and diversity in periods with intermediate nutrient concentrations. This pattern may indicate that our communities were in an elevated eutrophication state in periods with high nutrient concentrations and in the enrichment phase in periods with low concentrations. The study highlights the importance of regarding multiple stres- sors in combination and indicates that climate change may decrease benthic diversity in the Skagerrak in the future. |
| تدمد: | 0171-8630 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c41e284ba788750257cec4706026090 http://hdl.handle.net/10852/66138 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....8c41e284ba788750257cec4706026090 |
| قاعدة البيانات: | OpenAIRE |
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