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  • 1
    Online Resource
    Online Resource
    Responses of coral reef fishes to past climate changes are related to life‐history traits
    Wiley ; 2017
    In:  Ecology and Evolution Vol. 7, No. 6 ( 2017-03), p. 1996-2005
    Details
    In: Ecology and Evolution, Wiley, Vol. 7, No. 6 ( 2017-03), p. 1996-2005
    Abstract: Coral reefs and their associated fauna are largely impacted by ongoing climate change. Unravelling species responses to past climatic variations might provide clues on the consequence of ongoing changes. Here, we tested the relationship between changes in sea surface temperature and sea levels during the Quaternary and present‐day distributions of coral reef fish species. We investigated whether species‐specific responses are associated with life‐history traits. We collected a database of coral reef fish distribution together with life‐history traits for the Indo‐Pacific Ocean. We ran species distribution models ( SDM s) on 3,725 tropical reef fish species using contemporary environmental factors together with a variable describing isolation from stable coral reef areas during the Quaternary. We quantified the variance explained independently by isolation from stable areas in the SDM s and related it to a set of species traits including body size and mobility. The variance purely explained by isolation from stable coral reef areas on the distribution of extant coral reef fish species largely varied across species. We observed a triangular relationship between the contribution of isolation from stable areas in the SDMs and body size. Species, whose distribution is more associated with historical changes, occurred predominantly in the Indo‐Australian archipelago, where the mean size of fish assemblages is the lowest. Our results suggest that the legacy of habitat changes of the Quaternary is still detectable in the extant distribution of many fish species, especially those with small body size and the most sedentary. Because they were the least able to colonize distant habitats in the past, fish species with smaller body size might have the most pronounced lags in tracking ongoing climate change.
    Type of Medium: Online Resource
    ISSN: 2045-7758 , 2045-7758
    URL: Issue
    URL: Article
    DOI: 10.1002/ece3.2017.7.issue-6
    DOI: 10.1002/ece3.2800
    Language: English
    Publisher: Wiley
    Publication Date: 2017
    detail.hit.zdb_id: 2635675-2
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  • 2
    Online Resource
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    Isolation drives taxonomic and functional nestedness in tropical reef fish faunas
    Wiley ; 2017
    In:  Ecography Vol. 40, No. 3 ( 2017-03), p. 425-435
    Details
    In: Ecography, Wiley, Vol. 40, No. 3 ( 2017-03), p. 425-435
    Abstract: Taxonomic nestedness, the degree to which the taxonomic composition of species‐poor assemblages represents a subset of richer sites, commonly occurs in habitat fragments and islands differing in size and isolation from a source pool. However, species are not ecologically equivalent and the extent to which nestedness is observed in terms of functional trait composition of assemblages still remains poorly known. Here, using an extensive database on the functional traits and the distributions of 6316 tropical reef fish species across 169 sites, we assessed the levels of taxonomical vs functional nestedness of reef fish assemblages at the global scale. Functional nestedness was considerably more common than taxonomic nestedness, and generally associated with geographical isolation, where nested subsets are gradually more isolated from surrounding reef areas and from the center of biodiversity. Because a nested pattern in functional composition implies that certain combinations of traits may be represented by few species, we identified these groups of low redundancy that include large herbivore‐detritivores and omnivores, small piscivores, and macro‐algal herbivores. The identified patterns of nestedness may be an outcome of the interaction between species dispersal capabilities, resource requirements, and gradients of isolation among habitats. The importance of isolation in generating the observed pattern of functional nestedness within biogeographic regions may indicate that disturbance in depauperate and isolated sites can have disproportionate effects on the functional structure of their reef fish assemblages.
    Type of Medium: Online Resource
    ISSN: 0906-7590 , 1600-0587
    URL: Issue
    URL: Article
    DOI: 10.1111/ecog.2017.v40.i3
    DOI: 10.1111/ecog.02293
    Language: English
    Publisher: Wiley
    Publication Date: 2017
    detail.hit.zdb_id: 2024917-2
    detail.hit.zdb_id: 1112659-0
    SSG: 12
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  • 3
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    A process‐based model supports an association between dispersal and the prevalence of species traits in tropical reef fish assemblages
    Wiley ; 2019
    In:  Ecography Vol. 42, No. 12 ( 2019-12), p. 2095-2106
    Details
    In: Ecography, Wiley, Vol. 42, No. 12 ( 2019-12), p. 2095-2106
    Abstract: Habitat dynamics interacting with species dispersal abilities could generate gradients in species diversity and prevalence of species traits when the latter are associated with species dispersal potential. Using a process‐based model of diversification constrained by a dispersal parameter, we simulated the interplay between reef habitat dynamics during the past 140 million years and dispersal, shaping lineage diversification history and assemblage composition globally. The emerging patterns from the simulations were compared to current prevalence of species traits related to dispersal for 6315 tropical reef fish species. We found a significant spatial congruence between the prevalence of simulated low dispersal values and areas with a large proportion of species characterized by small adult body size, narrow home range mobility behaviour, pelagic larval duration shorter than 21 days and diurnal activity. Species characterized by such traits were found predominantly in the Indo‐Australian Archipelago and the Caribbean Sea. Furthermore, the frequency distribution of the dispersal parameter was found to match empirical distributions for body size, PLD and home range mobility behaviour. Also, the dispersal parameter in the simulations was associated to diversification rates and resulted in trait frequency matching empirical distributions. Overall, our findings suggest that past habitat dynamics, in conjunction with dispersal processes, influenced diversification in tropical reef fishes, which may explain the present‐day geography of species traits.
    Type of Medium: Online Resource
    ISSN: 0906-7590 , 1600-0587
    URL: Issue
    URL: Article
    DOI: 10.1111/ecog.2019.v42.i12
    DOI: 10.1111/ecog.04537
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2024917-2
    detail.hit.zdb_id: 1112659-0
    SSG: 12
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  • 4
    Online Resource
    Online Resource
    Coral reef structural complexity provides important coastal protection from waves under rising sea levels
    American Association for the Advancement of Science (AAAS) ; 2018
    In:  Science Advances Vol. 4, No. 2 ( 2018-02-02)
    Details
    In: Science Advances, American Association for the Advancement of Science (AAAS), Vol. 4, No. 2 ( 2018-02-02)
    Abstract: Coral reefs are diverse ecosystems that support millions of people worldwide by providing coastal protection from waves. Climate change and human impacts are leading to degraded coral reefs and to rising sea levels, posing concerns for the protection of tropical coastal regions in the near future. We use a wave dissipation model calibrated with empirical wave data to calculate the future increase of back-reef wave height. We show that, in the near future, the structural complexity of coral reefs is more important than sea-level rise in determining the coastal protection provided by coral reefs from average waves. We also show that a significant increase in average wave heights could occur at present sea level if there is sustained degradation of benthic structural complexity. Our results highlight that maintaining the structural complexity of coral reefs is key to ensure coastal protection on tropical coastlines in the future.
    Type of Medium: Online Resource
    ISSN: 2375-2548
    URL: Article
    DOI: 10.1126/sciadv.aao4350
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2018
    detail.hit.zdb_id: 2810933-8
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  • 5
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    Online Resource
    Climate change and warm‐water species at the north‐western boundary of the Mediterranean Sea
    Wiley ; 2015
    In:  Marine Ecology Vol. 36, No. 4 ( 2015-12), p. 897-909
    Details
    In: Marine Ecology, Wiley, Vol. 36, No. 4 ( 2015-12), p. 897-909
    Abstract: The effects of global change are particularly serious in areas where range shifts of species are physically constrained such as the Ligurian Sea, which is one of the coldest sectors of the Mediterranean. In this basin, historical information on water temperature (from the sea surface down to 75 m depth) dates back to the 1950s. Early studies also recorded warm‐water species occurrence. Thanks to these data we provide the first detailed characterization of water temperature variation from 1958 up to 2010 in the layer 0–75 m depth. We coupled this analysis with the available information on rocky reef epibenthic communities (literature review from 1955 to 1964 and field data from 1980 to 2010). The analysis of water temperature revealed several patterns of variation: a cooling phase from 1958 to 1980, a phase of rapid warming from 1980 to 1990 and a phase of slower warming from 1990 to 2010. Inter‐annual variation in temperature increased over the entire period for the water layer down to 20 m. Warm‐water native and alien species richness increased during the warming phases. Literature estimates suggest a decrease in warm‐water native species richness during the cooling phase. The analysis of quantitative data collected in the early 1990s and late 2000s indicated a decrease in the cover of warm‐water native species on shallow rocky reefs and an increase in deeper waters. We argue that increased inter‐annual variation in water temperature may disadvantage native warm‐water species in shallow waters. Our results indicate that the effect of temperature rises in cold, constrained basins may be more complex than the simple prediction of species changing their geographical range according to their thermal limits.
    Type of Medium: Online Resource
    ISSN: 0173-9565 , 1439-0485
    URL: Issue
    URL: Article
    DOI: 10.1111/maec.2015.36.issue-4
    DOI: 10.1111/maec.12277
    Language: English
    Publisher: Wiley
    Publication Date: 2015
    detail.hit.zdb_id: 2020745-1
    detail.hit.zdb_id: 225578-9
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  • 6
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    Reconstructing hyperdiverse food webs: Gut content metabarcoding as a tool to disentangle trophic interactions on coral reefs
    Wiley ; 2019
    In:  Methods in Ecology and Evolution Vol. 10, No. 8 ( 2019-08), p. 1157-1170
    Details
    In: Methods in Ecology and Evolution, Wiley, Vol. 10, No. 8 ( 2019-08), p. 1157-1170
    Abstract: Les facteurs de stress anthropiques ont de fortes répercussions sur les écosystèmes. Pour comprendre leur influence, une connaissance détaillée des relations trophiques entre les espèces est essentielle. Cependant, cela nécessite un échantillonnage à haute résolution au sein des communautés, en particulier pour des écosystèmes tropicaux très diversifiés. Nous avons utilisé le metabarcoding des contenus intestinaux sur une large gamme de poissons de récifs coralliens (8 familles, 22 espèces) à Moorea, en Polynésie française, pour vérifier si cette technique permettait d'obtenir la structure d'un réseau trophique marin hyper‐diversifié. De plus, nous avons cherché à savoir si les groupes taxonomiques (familles) et les affectations trophiques traditionnelles à grande échelle expliquaient le régime alimentaire du poisson selon quatre paramètres différents permettant de quantifier les interactions prédateur‐proie. Le metabarcoding a produit un grand nombre (4 341) d'unités taxonomiques opérationnelles uniques (i.e. des proies) assorties d'affectations taxonomiques à haute résolution (i.e. souvent au niveau du genre ou de l'espèce). Nous démontrons que, sur plusieurs métriques, le groupe taxonomique au niveau de la famille est un prédicteur de relations trophiques empiriques toujours meilleur, bien que faible, par rapport aux affectations fonctionnelles à grande échelle fréquemment utilisées. Notre méthode révèle également un réseau trophique complexe avec une répartition à échelle précise entre les espèces, soulignant davantage l'importance d'examiner les régimes alimentaires des poissons au‐delà des grandes catégories trophiques. Nous démontrons la capacité du metabarcoding à reconstruire des réseaux alimentaires diversifiés et complexes avec une résolution exceptionnelle, une avancée significative par rapport à la reconstruction traditionnelle du réseau alimentaire. De plus, cette méthode nous permet d'identifier la niche trophique des espèces avec une modélisation basée sur des niches, même à travers des assemblages d'espèces hyper‐diversifiés tels que les récifs coralliens. Concomitamment à des techniques complémentaires telles que l'analyse des isotopes stables, l'application du metabarcoding à des communautés entières fournira des informations sans précédent sur les flux d'énergie et de nutriments et nous renseignera sur leur vulnérabilité aux perturbations, même dans les écosystèmes les plus diversifiés du monde.
    Type of Medium: Online Resource
    ISSN: 2041-210X , 2041-210X
    URL: Issue
    URL: Article
    DOI: 10.1111/mee3.v10.8
    DOI: 10.1111/2041-210X.13206
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2528492-7
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  • 7
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    Online Resource
    Corals hosting symbiotic hydrozoans are less susceptible to predation and disease
    The Royal Society ; 2017
    In:  Proceedings of the Royal Society B: Biological Sciences Vol. 284, No. 1869 ( 2017-12-20), p. 20172405-
    Details
    In: Proceedings of the Royal Society B: Biological Sciences, The Royal Society, Vol. 284, No. 1869 ( 2017-12-20), p. 20172405-
    Abstract: 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.
    Type of Medium: Online Resource
    ISSN: 0962-8452 , 1471-2954
    URL: Article
    DOI: 10.1098/rspb.2017.2405
    Language: English
    Publisher: The Royal Society
    Publication Date: 2017
    detail.hit.zdb_id: 1460975-7
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    SSG: 25
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  • 8
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    Response to Comment on “Demographic dynamics of the smallest marine vertebrates fuel coral reef ecosystem functioning”
    American Association for the Advancement of Science (AAAS) ; 2019
    In:  Science Vol. 366, No. 6472 ( 2019-12-20)
    Details
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 366, No. 6472 ( 2019-12-20)
    Abstract: Allgeier and Cline suggest that our model overestimates the contributions of cryptobenthic fishes to coral reef functioning. However, their 20-year model ignores the basic biological limits of population growth. If incorporated, cryptobenthic contributions to consumed fish biomass remain high (20 to 70%). Disturbance cycles and uncertainties surrounding the fate of large fishes on decadal scales further demonstrate the important role of cryptobenthic fishes.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    URL: Article
    DOI: 10.1126/science.aaz1301
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2019
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
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  • 9
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    A predictive model based on multiple coastal anthropogenic pressures explains the degradation status of a marine ecosystem: Implications for management and conservation
    Elsevier BV ; 2018
    In:  Biological Conservation Vol. 222 ( 2018-06), p. 125-135
    Details
    In: Biological Conservation, Elsevier BV, Vol. 222 ( 2018-06), p. 125-135
    Type of Medium: Online Resource
    ISSN: 0006-3207
    URL: Article
    DOI: 10.1016/j.biocon.2018.04.006
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2018
    detail.hit.zdb_id: 1496231-7
    SSG: 12
    SSG: 23
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  • 10
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    Global mismatch between fishing dependency and larval supply from marine reserves
    Springer Science and Business Media LLC ; 2017
    In:  Nature Communications Vol. 8, No. 1 ( 2017-07-10)
    Details
    In: Nature Communications, Springer Science and Business Media LLC, Vol. 8, No. 1 ( 2017-07-10)
    Abstract: Marine reserves are viewed as flagship tools to protect exploited species and to contribute to the effective management of coastal fisheries. Yet, the extent to which marine reserves are globally interconnected and able to effectively seed areas, where fisheries are most critical for food and livelihood security is largely unknown. Using a hydrodynamic model of larval dispersal, we predict that most marine reserves are not interconnected by currents and that their potential benefits to fishing areas are presently limited, since countries with high dependency on coastal fisheries receive very little larval supply from marine reserves. This global mismatch could be reversed, however, by placing new marine reserves in areas sufficiently remote to minimize social and economic costs but sufficiently connected through sea currents to seed the most exploited fisheries and endangered ecosystems.
    Type of Medium: Online Resource
    ISSN: 2041-1723
    URL: Article
    DOI: 10.1038/ncomms16039
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2017
    detail.hit.zdb_id: 2553671-0
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