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Auteur Maire, E.; Villeger, S.; Graham, N.A.J.; Hoey, A.S.; Cinner, J.; Ferse, S.C.A.; Aliaume, C.; Booth, D.J.; Feary, D.A.; Kulbicki, M.; Sandin, S.A.; Vigliola, L.; Mouillot, D.
Titre Community-wide scan identifies fish species associated with coral reef services across the Indo-Pacific Type Article scientifique
Année 2018 Publication Revue Abrégée Proc. R. Soc. B-Biol. Sci.
Volume (down) 285 Numéro 1883 Pages 20181167
Mots-Clés biodiversity; climate-change; coral reefs; diversity; ecosystem functioning; ecosystem services; ecosystem-function; fish community; impact; key species; multifunctionality; productivity; redundancy; resilience; resistance
Résumé Determining whether many functionally complementary species or only a subset of key species are necessary to maintain ecosystem functioning and services is a critical question in community ecology and biodiversity conservation. Identifying such key species remains challenging, especially in the tropics where many species co-occur and can potentially support the same or different processes. Here, we developed a new community-wide scan CWS) approach, analogous to the genome-wide scan, to identify fish species that significantly contribute, beyond the socio-environmental and species richness effects, to the biomass and coral cover on Indo-Pacific reefs. We found that only a limited set of species (51 out of approx. 400, = approx. 13%), belonging to various functional groups and evolutionary lineages, are strongly and positively associated with fish biomass and live coral cover. Many of these species have not previously been identified as functionally important, and thus may be involved in unknown, yet important, biological mechanisms that help sustain healthy and productive coral reefs. CWS has the potential to reveal species that are key to ecosystem functioning and services and to guide management strategies as well as new experiments to decipher underlying causal ecological processes.
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ISSN 0962-8452 ISBN Médium
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Numéro d'Appel MARBEC @ alain.herve @ collection 2392
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Auteur Tribot, A.-S.; Deter, J.; Mouquet, N.
Titre Integrating the aesthetic value of landscapes and biological diversity Type Article scientifique
Année 2018 Publication Revue Abrégée Proc. R. Soc. B-Biol. Sci.
Volume (down) 285 Numéro 1886 Pages 20180971
Mots-Clés aesthetic value; biodiversity; conservation; ecological functioning; ecosystem services; increase; indicators; landscape ecology; perception; preferences; quality; species richness; urban green-space
Résumé As a cultural ecosystem service, the aesthetic value of landscapes contributes to human well-being, but studies linking biodiversity and ecosystem services generally do not account for this particular service. Therefore, congruence between the aesthetic perception of landscapes, ecological value and biodiversity remains poorly understood. Here, we describe the conceptual background, current methodologies and future challenges of assessing landscape aesthetics and its relationship with biodiversity. We highlight the methodological gaps between the assessment of landscape aesthetics, ecological diversity and functioning. We discuss the challenges associated with connecting landscape aesthetics with ecological value, and the scaling issues in the assessment of human aesthetics perception. To better integrate aesthetic value and ecological components of biodiversity, we propose to combine the study of aesthetics and the understanding of ecological function at both the species and landscape levels. Given the urgent need to engage society in conservation efforts, this approach, based on the combination of the aesthetic experience and the recognition of ecological functioning by the general public, will help change our culture of nature and promote ecologically oriented conservation policies.
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Langue English Langue du Résumé Titre Original
Éditeur de collection Titre de collection Titre de collection Abrégé
Volume de collection Numéro de collection Edition
ISSN 0962-8452 ISBN Médium
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Numéro d'Appel MARBEC @ alain.herve @ collection 2415
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Auteur Montano, S.; Fattorini, S.; Parravicini, V.; Berumen, M.L.; Galli, P.; Maggioni, D.; Arrigoni, R.; Seveso, D.; Strona, G.
Titre Corals hosting symbiotic hydrozoans are less susceptible to predation and disease Type Article scientifique
Année 2017 Publication Revue Abrégée Proc. R. Soc. B-Biol. Sci.
Volume (down) 284 Numéro 1869 Pages 20172405
Mots-Clés diversity; climate change; climate-change; great-barrier-reef; coral reefs; association; scleractinian corals; cnidaria; 1st record; acanthaster; bleaching; co-evolution; drupella; Drupella; zanclea
Résumé In spite of growing evidence that climate change may dramatically affect networks of interacting species, whether- and to what extent-ecological interactions can mediate species' responses to disturbances is an open question. Here we show how a largely overseen association such as that between hydrozoans and scleractinian corals could be possibly associated with a reduction in coral susceptibility to ever-increasing predator and disease outbreaks. We examined 2455 scleractinian colonies (from both Maldivian and the Saudi Arabian coral reefs) searching for non-random patterns in the occurrence of hydrozoans on corals showing signs of different health conditions (i.e. bleaching, algal overgrowth, corallivory and different coral diseases). We show that, after accounting for geographical, ecological and co-evolutionary factors, signs of disease and corallivory are significantly lower in coral colonies hosting hydrozoans than in hydrozoan-free ones. This finding has important implications for our understanding of the ecology of coral reefs, and for their conservation in the current scenario of global change, because it suggests that symbiotic hydrozoans may play an active role in protecting their scleractinian hosts from stresses induced by warming water temperatures.
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ISSN 0962-8452 ISBN Médium
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Numéro d'Appel MARBEC @ alain.herve @ collection 2258
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Auteur Seddon, N.; Mace, G.M.; Naeem, S.; Tobias, J.A.; Pigot, A.L.; Cavanagh, R.; Mouillot, D.; Vause, J.; Walpole, M.
Titre Biodiversity in the Anthropocene: prospects and policy Type Article scientifique
Année 2016 Publication Revue Abrégée Proc. R. Soc. B-Biol. Sci.
Volume (down) 283 Numéro 1844 Pages 20162094
Mots-Clés environment; productivity; functional diversity; ecosystem; conservation; land-use; species richness; extinction; ecosystem services; plant diversity; values; biodiversity services; ecological resilience; interdisciplinary; sustainable development
Résumé Meeting the ever-increasing needs of the Earth's human population without excessively reducing biological diversity is one of the greatest challenges facing humanity, suggesting that newapproaches to biodiversity conservation are required. One idea rapidly gaining momentum-as well as opposition-is to incorporate the values of biodiversity into decision-making using economic methods. Here, we develop several lines of argument for how biodiversity might be valued, building on recent developments in natural science, economics and science-policy processes. Then we provide a synoptic guide to the papers in this special feature, summarizing recent research advances relevant to biodiversity valuation and management. Current evidence suggests that more biodiverse systems have greater stability and resilience, and that by maximizing key components of biodiversity we maximize an ecosystem's long-term value. Moreover, many services and values arising from biodiversity are interdependent, and often poorly captured by standard economic models. We conclude that economic valuation approaches to biodiversity conservation should (i) account for interdependency and (ii) complement rather than replace traditional approaches. To identify possible solutions, we present a framework for understanding the foundational role of hard-to-quantify ` biodiversity services' in sustaining the value of ecosystems to humanity, and then use this framework to highlight new directions for pure and applied research. In most cases, clarifying the links between biodiversity and ecosystem services, and developing effective policy and practice for managing biodiversity, will require a genuinely interdisciplinary approach.
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Numéro d'Appel MARBEC @ alain.herve @ collection 2248
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Auteur Ramirez-Romero, E.; Molinero, J.C.; Sommer, U.; Salhi, N.; Yahia, O.K.-D.; Yahia, M.N.D.
Titre Phytoplankton size changes and diversity loss in the southwestern Mediterranean Sea in relation to long-term hydrographic variability Type Article scientifique
Année 2020 Publication Revue Abrégée Estuar. Coast. Shelf Sci.
Volume (down) 235 Numéro Pages 106574
Mots-Clés bay; climate-change; Diversity loss; dynamics; evolution; jellyfish; marine; Nanophytoplankton; Ocean warming; patterns; Phytoplankton diversity; plankton communities; Size structural changes; Southwestern mediterranean; temperature; time-series
Résumé Structural changes in plankton primary producers have large implications for food web dynamics, energy fluxes and the vertical export of biogenic particulate carbon. Here we examine phytoplankton data spanning the period 1993-2008 from the Bay of Tunis, southwestern Mediterranean Sea, in relation to long term hydroclimate variability. We show a conspicuous shift in the structure of the phytoplankton community characterized by an increase of small-sized species and diversity loss, revealing a dominance of smaller blooming diatoms and cyanobacteria. Such changes were concurrent with marked modifications in hydroclimatic patterns experienced in the Bay of Tunis consisting of a shift towards enhanced winter precipitation together with rising temperatures. This novel study shows an overall rise in the proportion of small phytoplankton cells and a decreasing trend in phytoplankton diversity in the southern Mediterranean area. These findings warn of a potential decline of trophic efficiency and lesser food web stability resulting from mean size reduction and the diversity loss.
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ISSN 0272-7714 ISBN Médium
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Notes WOS:000527915700034 Approuvé pas de
Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2766
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