@article {9528, title = {Tracing the fate of seabird-derived nitrogen in a coral reef using nitrate and coral skeleton nitrogen isotopes}, journal = {Limnology and Oceanography}, year = {2024}, month = {Mar-01-2024}, issn = {0024-3590}, doi = {10.1002/lno.12485}, url = {https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.12485}, author = {Choisnard, No{\'e}mie and Duprey, Nicolas Noel and Wald, Tanja and Thibault, Martin and Houlbr{\`e}que, Fanny and Foreman, Alan D. and Cuet, Pascale and Mireille M.M. Guillaume and Vonhof, Hubert and Sigman, Daniel M. and Haug, Gerald H. and Maguer, Jean-Fran{\c c}ois and L{\textquoteright}Helguen, St{\'e}phane and Mart{\'\i}nez-Garc{\'\i}a, Alfredo and Lorrain, Anne} } @article {9117, title = {New insights into the diversity of cryptobenthic Cirripectes blennies in the Mascarene Archipelago sampled using Autonomous Reef Monitoring Structures (ARMS)}, journal = {Ecology and Evolution}, volume = {13}, year = {2023}, month = {Jan-03-2023}, issn = {2045-7758}, doi = {10.1002/ece3.v13.310.1002/ece3.9850}, url = {https://onlinelibrary.wiley.com/toc/20457758/13/3}, author = {Marion Cou{\"e}del and Dettai, Agn{\`e}s and Mireille M.M. Guillaume and Bruggemann, Fleur and Bureau, Sophie and Baptiste Frattini and Verde~Ferreira, Am{\'e}lie and Azie, Jean-Lindsay and Bruggemann, J. Henrich} } @article {9118, title = {What are the toxicity thresholds of chemical pollutants for tropical reef-building corals? A systematic review}, journal = {Environmental Evidence}, volume = {12}, year = {2023}, month = {Jan-12-2023}, doi = {10.1186/s13750-023-00298-y}, url = {https://environmentalevidencejournal.biomedcentral.com/articles/10.1186/s13750-023-00298-y}, author = {Ou{\'e}draogo, Dakis-Yaoba and Mell, Hugo and Perceval, Olivier and Burga, Karen and Domart-Coulon, Isabelle and H{\'e}douin, Laetitia and Delaunay, Mathilde and Mireille M.M. Guillaume and Castelin, Magalie and Calvayrac, Christophe and Kerkhof, Odile and Sordello, Romain and Reyjol, Yorick and Ferrier-Pages, Christine} } @article {8466, title = {Estimating ecotoxicological effects of chemicals on tropical reef-building corals; a systematic review protocol}, journal = {Environmental Evidence}, volume = {10}, year = {2021}, month = {Dec-11-2021}, doi = {10.1186/s13750-021-00250-y}, url = {https://environmentalevidencejournal.biomedcentral.com/articles/10.1186/s13750-021-00250-y}, author = {Ou{\'e}draogo, Dakis-Yaoba and Perceval, Olivier and Ferrier-Pages, Christine and Domart-Coulon, Isabelle and H{\'e}douin, Laetitia and Burga, Karen and Mireille M.M. Guillaume and Calvayrac, Christophe and Castelin, Magalie and Reyjol, Yorick and Sordello, Romain} } @article {8200, title = {Evidence on the impacts of chemicals arising from human activity on tropical reef-building corals; a systematic map}, journal = {Environmental Evidence}, volume = {10}, year = {2021}, month = {Sep-22-2021}, doi = {10.1186/s13750-021-00237-9}, url = {https://environmentalevidencejournal.biomedcentral.com/articles/10.1186/s13750-021-00237-9}, author = {Ou{\'e}draogo, Dakis-Yaoba and Delaunay, Mathilde and Sordello, Romain and H{\'e}douin, L. and Castelin, Magalie and Perceval, Olivier and Domart-Coulon, Isabelle and Burga, Karen and Ferrier-Pages, Christine and Multon, Romane and Mireille M.M. Guillaume and L{\'e}ger, Cl{\'e}ment and Calvayrac, Christophe and Joannot, Pascale and Reyjol, Yorick} } @article {8348, title = {Observations of sharks (Elasmobranchii) at Europa Island, a remote marine protected area important for shark conservation in the southern Mozambique Channel}, journal = {PLOS ONE}, volume = {16}, year = {2021}, month = {Oct-05-2021}, pages = {e0253867}, type = {Research Article}, doi = {10.1371/journal.pone.0253867}, url = {https://dx.plos.org/10.1371/journal.pone.0253867}, author = {Mireille M.M. Guillaume and S{\'e}ret, Bernard} } @article {7469, title = {Highly variable taxa-specific coral bleaching responses to thermal stresses}, journal = {Marine Ecology Progress Series}, volume = {648}, year = {2020}, month = {27-08-2020}, pages = {135 - 151}, abstract = {Complex histories of chronic and acute sea surface temperature (SST) stresses are expected to trigger taxon- and location-specific responses that will ultimately lead to novel coral communities. The 2016 El Ni{\~n}o-Southern Oscillation provided an opportunity to examine largescale and recent environmental histories on emerging patterns in 226 coral communities distributed across 12 countries from East Africa to Fiji. Six main coral communities were identified that largely varied across a gradient of Acropora to massive Porites dominance. Bleaching intensity was taxon-specific and was associated with complex interactions among the 20 environmental variables that we examined. Coral community structure was better aligned with the historical temperature patterns between 1985 and 2015 than the 2016 extreme temperature event. Additionally, bleaching responses observed during 2016 differed from historical reports during past warm years. Consequently, coral communities present in 2016 are likely to have been reorganized by both long-term community change and acclimation mechanisms. For example, less disturbed sites with cooler baseline temperatures, higher mean historical SST background variability, and infrequent extreme warm temperature stresses were associated with Acropora-dominated communities, while more disturbed sites with lower historical SST background variability and frequent acute warm stress were dominated by stress-resistant massive Porites corals. Overall, the combination of taxon-specific responses, community-level reorganization over time, geographic variation, and multiple environmental stressors suggest complex responses and a diversity of future coral communities that can help contextualize management priorities and activities.}, keywords = {acclimation, Adaptation, Climate Change, community structure, Geography, Stress responses}, issn = {0171-8630}, doi = {10.3354/meps13402}, url = {https://www.int-res.com/abstracts/meps/v648/p135-151/}, author = {McClanahan, T.R. and Darling, E.S. and Maina, J.M. and Muthiga, NA and D{\textquoteright}agata, S. and Leblond, J. and Arthur, R. and Jupiter, S.D. and Wilson, S.K. and Mangubhai, S. and Ussi, A.M. and Mireille M.M. Guillaume and Humphries, A.T. and Patankar, V. and Shedrawi, G. and Pagu, J. and Grimsditch, G.} } @article {7470, title = {Large geographic variability in the resistance of corals to thermal stress}, journal = {Global Ecology and Biogeography}, year = {2020}, month = {May-10-2020}, abstract = {Aim: Predictions for the future of coral reefs are largely based on thermal exposure and poorly account for potential geographic variation in biological sensitivity to thermal stress. Without accounting for complex sensitivity responses, simple climate exposure models and associated predictions may lead to poor estimates of future coral survival and lead to policies that fail to identify and implement the most appropriate interventions. To begin filling this gap, we evaluated a number of attributes of coral taxa and communities that are predicted to influence coral resistance to thermal stress over a large geographic range.
Location:\ Western Indo-Pacific and Central Indo-Pacific Ocean Realms.
Major taxa studied:\ Zooxanthellate Scleractinia {\textendash} hard corals.
Methods:\ We evaluated the geographic variability of coral resistance to thermal stress as the ratio of thermal exposure and sensitivity in 12 countries during the 2016 global-bleaching event. Thermal exposure was estimated by two metrics: (a) historical excess summer heat (cumulative thermal anomaly, CTA), and (b) a multivariate index of sea-surface temperature (SST), light, and water flow (climate exposure, CE). Sensitivity was estimated for 226 sites using coordinated bleaching observations and underwater surveys of coral communities. We then evaluated coral resistance to thermal stress using 48 generalized linear mixed models (GLMMs) to compare the potential influences of geography, historical SST variation, coral cover and coral richness.
Results:\ Geographic faunal provinces and ecoregions were the strongest predictors of coral resistance to thermal stress, with sites in the Australian, Indonesian and Fiji-Caroline Islands coral provinces having higher resistance to thermal stress than Africa-India and Japan-Vietnam provinces. Ecoregions also showed strong gradients in resistance with highest resistance to thermal stress in the western Pacific and Coral Triangle and lower resistance in the surrounding ecoregions. A more detailed evaluation of Coral Triangle and non-Coral Triangle sites found higher resistance to thermal stress within the Coral Triangle, associated with\ c.\ 2.5 times more recent historical thermal anomalies and more centralized, warmer, and cool-water skew SST distributions, than in non-Coral Triangle sites. Our findings identify the importance of environmental history and geographic context in future predictions of bleaching, and identify some potential drivers of coral resistance to thermal stress.
Main conclusions:\ Simple threshold models of heat stress and coral acclimation are commonly used to predict the future of coral reefs. Here and elsewhere we show that large-scale responses of coral communities to heat stress are geographically variable and associated with differential environmental stresses and histories.}, issn = {1466-822X}, doi = {10.1111/geb.13191}, url = {https://onlinelibrary.wiley.com/doi/10.1111/geb.13191}, author = {McClanahan, Timothy R. and Maina, Joseph M. and Darling, Emily S. and Mireille M.M. Guillaume and Muthiga, Nyawira A. and D{\textquoteright}agata, Stephanie and Leblond, Julien and Arthur, Rohan and Jupiter, Stacy D. and Wilson, Shaun K. and Mangubhai, Sangeeta and Ussi, Ali M. and Humphries, Austin T. and Patankar, Vardhan and Shedrawi, George and Julius, Pagu and Ndagala, January and Grimsditch, Gabriel} } @article {7480, title = {What evidence exists on the impacts of chemicals arising from human activity on tropical reef-building corals? A systematic map protocol}, journal = {Environmental Evidence}, volume = {9}, year = {2020}, month = {Aug-03-2020}, abstract = {Background: Tropical coral reefs cover ca. 0.1\% of the Earth{\textquoteright}s surface but host an outstanding biodiversity and provide important ecosystem services to millions of people living nearby. However, they are currently threatened by both local (e.g. nutrient enrichment and chemical pollution of coastal reefs, arising from poor land management, agriculture and industry) and global stressors (mainly seawater warming and acidification, i.e. climate change). Global and local stressors interact together in different ways, but the presence of one stressor often reduces the tolerance to additional stress. While global stressors cannot be halted by local actions, local stressors can be reduced through ecosystem management, therefore minimizing the impact of climate change on reefs. To inform decision-makers, we propose here to systematically map the evidence of impacts of chemicals arising from anthropogenic activities on tropical reef-building corals, which are the main engineer species of reef ecosystems. We aim to identify the combinations of chemical and coral responses that have attracted the most attention and for which evidence can be further summarized in a systematic review that will give practical information to decision-makers.
Methods: The systematic map will follow the Collaboration for Environmental Evidence Guidelines and Standards for Evidence Synthesis in Environmental Management. We will search the relevant literature using English terms combined in a tested search string in two publication databases (Web Of Science Core Collection and Scopus). The search string will combine terms describing the population (tropical reef-building corals) and the exposure (chemicals). We will supplement this literature with some more obtained through search engines, specialist websites, and through a call to local stakeholders. Titles, abstracts, and full-texts will then be successively screened using pre-defined eligibility criteria. A list of pre-defined variables will then be extracted from full-texts. Finally, a database of all studies included in the map with coded metadata will be produced. The evidence will be described in a map report with text, figures and tables, and a matrix showing the distribution and frequency of included study into types of exposure and types of outcomes will be computed to identify potential knowledge gaps and knowledge clusters.}, keywords = {Contamination, Hermatypic, Nutrients, pollution, Scleractinian}, doi = {10.1186/s13750-020-00203-x}, url = {https://environmentalevidencejournal.biomedcentral.com/articles/10.1186/s13750-020-00203-x}, author = {Ou{\'e}draogo, Dakis-Yaoba and Sordello, Romain and Brugneaux, S. and Burga, K. and Calvayrac, C. and Castelin, Magalie and Domart-Coulon, Isabelle and Ferrier-Pages, C and Mireille M.M. Guillaume and H{\'e}douin, L. and Joannot, P. and Perceval, O. and Reyjol, Yorick} } @article {6663, title = {Multi-trace-element sea surface temperature coral reconstruction for the southern Mozambique Channel reveals teleconnections with the tropical Atlantic}, journal = {Biogeosciences}, volume = {16}, year = {2019}, pages = {695-712}, abstract = {Here we report seasonally resolved sea surface temperatures for the southern Mozambique Channel in the SW Indian Ocean based on multi-trace-element temperature proxy records preserved in two Porites sp. coral cores. Particularly, we assess the suitability of both separate and combined Sr/Ca and Li/Mg proxies for improved multi-element SST reconstructions. Overall, geochemical records from Europa Island Porites sp. highlight the potential of Sr/Ca and Li/Mg ratios as high-resolution climate proxies but also show significant differences in their response at this Indian Ocean subtropical reef site. Our reconstruction from 1970 to 2013 using the Sr/Ca SST proxy reveals a warming trend of 0.58 {\textpm} 0.1 {\textbullet} C in close agreement with instrumental data (0.47 {\textpm} 0.07 {\textbullet} C) over the last 42 years (1970-2013). In contrast, the Li/Mg showed unrealistically large warming trends, most probably caused by uncertainties around different uptake mechanisms of the trace elements Li and Mg and uncertainties in their temperature calibration. In our study, Sr/Ca is superior to Li/Mg to quantify absolute SST and relative changes in SST. However, spatial correlations between the combined detrended Sr/Ca and Li/Mg proxies compared to instrumental SST at Europa revealed robust correlations with local climate variability in the Mozambique Channel and teleconnections to regions in the Indian Ocean and southeastern Pacific where surface wind variability appeared to dominate the underlying pattern of SST variability. The strongest correlation was found between our Europa SST reconstruction and instrumental SST records from the northern tropical Atlantic. Only a weak correlation was found with ENSO, with recent warm anomalies in the geochemical proxies coinciding with strong El Ni{\~n}o or La Ni{\~n}a. We identified the Pacific-North American (PNA) atmospheric pattern , which develops in the Pacific in response to ENSO, and the tropical North Atlantic SST as the most likely causes of the observed teleconnections with the Mozambique Channel SST at Europa.}, keywords = {Anthozoa, Atlantic Ocean, Atlantic Ocean (North), Atlantic Ocean (Tropical), climate variation, coral, El Nino, El Nino-Southern Oscillation, Europa Island, Indian Ocean, La Nina, Mascarene Islands, Mozambique Channel, Pacific Ocean, Pacific Ocean (Southeast), Porites, proxy climate record, reconstruction, Reunion, sea surface temperature, subtropical region, surface wind, teleconnection, trace element}, issn = {17264170}, doi = {10.5194/bg-16-695-2019}, url = {https://www.biogeosciences.net/16/695/2019/}, author = {Zinke, J. and D{\textquoteright}Olivo, J.P. and Gey, C.J. and McCulloch, M.T. and Henrich J Bruggemann and Lough, J.M. and Mireille M.M. Guillaume} } @article {6662, title = {Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Ni{\~n}o}, journal = {Nature Climate Change}, volume = {9}, year = {2019}, pages = {845-851}, abstract = {Under extreme heat stress, corals expel their symbiotic algae and colour (that is, {\textquoteleft}bleaching{\textquoteright}), which often leads to widespread mortality. Predicting the large-scale environmental conditions that reinforce or mitigate coral bleaching remains unresolved and limits strategic conservation actions1,2. Here we assessed coral bleaching at 226 sites and 26 environmental variables that represent different mechanisms of stress responses from East Africa to Fiji through a coordinated effort to evaluate the coral response to the 2014{\textendash}2016 El Ni{\~n}o/Southern Oscillation thermal anomaly. We applied common time-series methods to study the temporal patterning of acute thermal stress and evaluated the effectiveness of conventional and new sea surface temperature metrics and mechanisms in predicting bleaching severity. The best models indicated the importance of peak hot temperatures, the duration of cool temperatures and temperature bimodality, which explained 50\% of the variance, compared to the common degree-heating week temperature index that explained only 9\%. Our findings suggest that the threshold concept as a mechanism to explain bleaching alone was not as powerful as the multidimensional interactions of stresses, which include the duration and temporal patterning of hot and cold temperature extremes relative to average local conditions. {\textcopyright} 2019, The Author(s), under exclusive licence to Springer Nature Limited.}, keywords = {Algae, Anthozoa}, issn = {1758678X}, doi = {10.1038/s41558-019-0576-8}, url = {https://www.nature.com/articles/s41558-019-0576-8}, author = {McClanahan, T.R. and Darling, E.S. and Maina, J.M. and Muthiga, N.A. and D{\textquoteright}agata, S. and Jupiter, S.D. and Arthur, R. and Wilson, S.K. and Mangubhai, S. and Nand, Y. and Ussi, A.M. and Humphries, A.T. and Patankar, V.J. and Mireille M.M. Guillaume and Philippe Keith and Shedrawi, G. and Julius, P. and Grimsditch, G. and Ndagala, J. and Leblond, J.} } @inbook {4080, title = {Cnidaires}, booktitle = {La fonction venimeuse}, year = {2015}, pages = {59-91}, publisher = {Lavoisier Tec \& Doc}, organization = {Lavoisier Tec \& Doc}, edition = {Sous la direction de C. Rollard, J.-P. Chippaux \& M. Goyffon}, chapter = {5}, address = {Paris}, author = {Mireille M.M. Guillaume} }