The role of physical disturbance for litter decomposition and nutrient cycling in coastal sand dunes
| العنوان: | The role of physical disturbance for litter decomposition and nutrient cycling in coastal sand dunes |
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| المؤلفون: | David Rosebery, Tiffany Rodolfo-Damiano, Stéphane Bujan, Quentin Laporte-Fauret, Ana Teresa Alonso Ayuso, Richard Michalet, Vincent Marieu, Bruno Castelle |
| المساهمون: | UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Office National des Forêts (ONF) |
| المصدر: | Ecological Engineering Ecological Engineering, Elsevier, 2021, 162, pp.106181. ⟨10.1016/j.ecoleng.2021.106181⟩ |
| بيانات النشر: | Elsevier BV, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Foredune, Environmental Engineering, Disturbance (geology), Physical disturbance, 010501 environmental sciences, Management, Monitoring, Policy and Law, 01 natural sciences, Deposition (geology), Sand dune stabilization, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, Ecosystem, Sand deposition, [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology, 14. Life underwater, Transect, Drone surveys, 0105 earth and related environmental sciences, Nature and Landscape Conservation, Hydrology, Litter decomposition, 04 agricultural and veterinary sciences, Ecotone, 15. Life on land, Digging, Ecosystem functioning, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Environmental science, Wind abrasion, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Coastal dunes |
| الوصف: | International audience; Disturbance increases ecosystem functioning in productive habitats but its effect in stressful conditions is less documented, although this is crucial for understanding the resilience of disturbed systems to natural and anthropogenic disturbances. Our goal is to assess the influence of physical disturbance for ecosystem functioning in coastal sand dunes. We set up an experimental design, including two treatments in four blocks, in a four km-long dune site from South West France. We simulated physical disturbance from marine and wind origin, digging Experimental Notches (EN), in the incipient (West EN treatment) and established foredunes (East EN treatment), respectively and compared the effects of EN to controls along transects including 13 positions from the beach to the transition dune behind ENs. We sampled litter decomposition rate, elevation variation, wind abrasion, sand grain size and vegetation composition. We also used drones to quantify sand deposition sheets during severe winter storms. Litter decomposition rate was the highest where sand accumulated the most, at the ecotone between the established foredune and transition dune and in the East EN treatment. This increase of ecosystem functioning was correlated to wind patterns. However, there was also a strong alongshore variability, with important sand deposition sheets occurring in some blocks depending on dune geomorphology. Vegetation composition was mainly influenced by shoreline distance, but also by the block and EN treatment, with a strong interaction between these three effects. We conclude that physical disturbance increase ecosystem functioning in the stressful conditions of the Atlantic sand dunes, only when sand accumulates, whereas excessive disturbances enhancing sand erosion are not favorable for ecosystem functioning. |
| تدمد: | 0925-8574 1872-6992 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::778fc683a86931bfa92402bf1c2e417cTest https://doi.org/10.1016/j.ecoleng.2021.106181Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....778fc683a86931bfa92402bf1c2e417c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 09258574 18726992 |
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