Seeking alternative stable states in a deep lake
| العنوان: | Seeking alternative stable states in a deep lake |
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| المؤلفون: | Bruel, Rosalie, Marchetto, Aldo, Bernard, Anaëlle, Lami, Andrea, Sabatier, Pierre, Frossard, Victor, Perga, Marie Elodie |
| المساهمون: | Istituto per lo Studio degli Ecosistemi, Consiglio Nazionale delle Ricerche [Roma] (CNR), Environnements, Dynamiques et Territoires de la Montagne (EDYTEM), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), University Savoie-Mont Blanc, Region Auvergne-Rhone-Alpes, Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de la Recherche Agronomique (INRA) |
| المصدر: | Freshwater Biology Freshwater Biology, Wiley, 2018, 63 (6), pp. 553-568. ⟨10.1111/fwb.13093⟩ Freshwater biology 63 (2018): 553–568. doi:10.1111/fwb.13093 info:cnr-pdr/source/autori:Bruel, Rosalie; Marchetto, Aldo; Bernard, Anaëlle; Lami, Andrea; Sabatier, Pierre; Frossard, Victor; Perga, Marie Elodie; Perga, Marie Elodie/titolo:Seeking alternative stable states in a deep lake/doi:10.1111%2Ffwb.13093/rivista:Freshwater biology (Print)/anno:2018/pagina_da:553/pagina_a:568/intervallo_pagine:553–568/volume:63 |
| بيانات النشر: | HAL CCSD, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, [SDE.IE]Environmental Sciences/Environmental Engineering, 010604 marine biology & hydrobiology, [SDE.MCG]Environmental Sciences/Global Changes, spatial heterogeneity, [SHS.GEO]Humanities and Social Sciences/Geography, 15. Life on land, Aquatic Science, 010603 evolutionary biology, 01 natural sciences, [SDE.ES]Environmental Sciences/Environmental and Society, Aquatic organisms, alternative stable state, Oceanography, eutrophication, 13. Climate action, Alternative stable state, Environmental science, 14. Life underwater, palaeo-ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, early warnings |
| الوصف: | International audience; Hysteresis linked to alternative stable states may explain delays in water quality recovery despite reduced nutrient loadings in shallow lakes. Because deep lakes are assumed to be less prone to critical transitions, similar delays are attributed to the confounding effects of additional environmental disturbances, such as climate warming. Herein, we hypothesised that the lack of evidence of nutrient‐driven alternative stable states in a deep lake arises from the fact that the nutrient threshold that causes the critical transition is lower than the nutrient threshold in shallow lakes. Thereby, it might have been crossed much earlier in the lake history. To test this hypothesis, we focused on the palaeo‐ecological trajectory of Lake Varese, which is a deep, hypereutrophicated peri‐alpine lake undergoing restoration. Proxies for drivers of ecological state (i.e. total phosphorus—TP—through diatoms and pigments) and ecological responses (Cladocera), as well as a repeatable analysis, were used to identify transitions and to distinguish hysteretic delays from those of the ecosystems responding to additional constraints over the past century. Our results suggest spatial heterogeneity in the ecological response. The littoral habitats changed abruptly and prematurely for a low TP threshold, causing a shift that met many criteria of a flickering‐type critical transition. Soon after the littoral shift, a striking increase in the lake phosphorous concentration was recorded and drove the pelagic assemblage towards a new state. This transition was abrupt, and the pelagic communities exhibited limited evidence of recovery; however, we found no evidence of hysteresis. Therefore, the modern ecological trajectory of the pelagic communities is currently driven by climate warming. This detailed analysis allowed us to go beyond the general pattern that links ecological responses to drivers and suggest that a nonlinear transition following eutrophication can take place in a deep lake synchronously with linear transitions. Instead of triggering a new regime shift, climate warming, to which pelagic habitats are more sensitive than littoral ones, has driven the lake further from its safe operating space. |
| اللغة: | English |
| تدمد: | 0046-5070 1365-2427 |
| DOI: | 10.1111/fwb.13093⟩ |
| DOI: | 10.1111/fwb.13093 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b63d20eab7b75e5912f454ff83bccf11 https://hal-sde.archives-ouvertes.fr/hal-01878893 |
| Rights: | RESTRICTED |
| رقم الانضمام: | edsair.doi.dedup.....b63d20eab7b75e5912f454ff83bccf11 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00465070 13652427 |
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| DOI: | 10.1111/fwb.13093⟩ |