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\n\n \n \n Agostini, S., Harvey, B. P., Milazzo, M., Wada, S., Kon, K., Floc’h, N., Komatsu, K., Kuroyama, M., & Hall‐Spencer, J. M.\n\n\n \n \n \n \n \n Simplification, not “tropicalization”, of temperate marine ecosystems under ocean warming and acidification.\n \n \n \n \n\n\n \n\n\n\n
Global Change Biology, 27(19): 4771–4784. October 2021.\n
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\n\n \n \n ![\"Simplification,](\"//bibbase.org/img/filetypes/link.svg\"\n\t "\\"Paper\\"\n\t")
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@article{agostini_simplification_2021,\n\ttitle = {Simplification, not “tropicalization”, of temperate marine ecosystems under ocean warming and acidification},\n\tvolume = {27},\n\tissn = {1354-1013, 1365-2486},\n\turl = {https://onlinelibrary.wiley.com/doi/10.1111/gcb.15749},\n\tdoi = {10.1111/gcb.15749},\n\tlanguage = {en},\n\tnumber = {19},\n\turldate = {2021-12-21},\n\tjournal = {Global Change Biology},\n\tauthor = {Agostini, Sylvain and Harvey, Ben P. and Milazzo, Marco and Wada, Shigeki and Kon, Koetsu and Floc’h, Nicolas and Komatsu, Kosei and Kuroyama, Mayumi and Hall‐Spencer, Jason M.},\n\tmonth = oct,\n\tyear = {2021},\n\tkeywords = {biogeography, climate change, kelp forests, natural analogues, range shift, scleractinian corals, warm-temperate},\n\tpages = {4771--4784},\n}\n\n\n
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\n\n \n \n Agostini, S., Houlbrèque, F., Biscéré, T., Harvey, B. P., Heitzman, J. M., Takimoto, R., Yamazaki, W., Milazzo, M., & Rodolfo-Metalpa, R.\n\n\n \n \n \n \n \n Greater mitochondrial energy production provides resistance to ocean acidification in “Winning” hermatypic corals.\n \n \n \n \n\n\n \n\n\n\n
Frontiers in Marine Science, 7: 600836. January 2021.\n
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@article{agostini_greater_2021,\n\ttitle = {Greater mitochondrial energy production provides resistance to ocean acidification in “{Winning}” hermatypic corals},\n\tvolume = {7},\n\tissn = {2296-7745},\n\turl = {https://www.frontiersin.org/articles/10.3389/fmars.2020.600836/full},\n\tdoi = {10.3389/fmars.2020.600836},\n\tabstract = {Coral communities around the world are projected to be negatively affected by ocean acidification. Not all coral species will respond in the same manner to rising CO\n 2\n levels. Evidence from naturally acidified areas such as CO\n 2\n seeps have shown that although a few species are resistant to elevated CO\n 2\n , most lack sufficient resistance resulting in their decline. This has led to the simple grouping of coral species into “winners” and “losers,” but the physiological traits supporting this ecological assessment are yet to be fully understood. Here using CO\n 2\n seeps, in two biogeographically distinct regions, we investigated whether physiological traits related to energy production [mitochondrial electron transport systems (ETSAs) activities] and biomass (protein contents) differed between winning and losing species in order to identify possible physiological traits of resistance to ocean acidification and whether they can be acquired during short-term transplantations. We show that winning species had a lower biomass (protein contents per coral surface area) resulting in a higher potential for energy production (biomass specific ETSA: ETSA per protein contents) compared to losing species. We hypothesize that winning species inherently allocate more energy toward inorganic growth (calcification) compared to somatic (tissue) growth. In contrast, we found that losing species that show a higher biomass under reference\n p\n CO\n 2\n experienced a loss in biomass and variable response in area-specific ETSA that did not translate in an increase in biomass-specific ETSA following either short-term (4–5 months) or even life-long acclimation to elevated\n p\n CO\n 2\n conditions. Our results suggest that resistance to ocean acidification in corals may not be acquired within a single generation or through the selection of physiologically resistant individuals. This reinforces current evidence suggesting that ocean acidification will reshape coral communities around the world, selecting species that have an inherent resistance to elevated\n p\n CO\n 2\n .},\n\turldate = {2021-07-27},\n\tjournal = {Frontiers in Marine Science},\n\tauthor = {Agostini, Sylvain and Houlbrèque, Fanny and Biscéré, Tom and Harvey, Ben P. and Heitzman, Joshua M. and Takimoto, Risa and Yamazaki, Wataru and Milazzo, Marco and Rodolfo-Metalpa, Riccardo},\n\tmonth = jan,\n\tyear = {2021},\n\tpages = {600836},\n}\n\n\n
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\n Coral communities around the world are projected to be negatively affected by ocean acidification. Not all coral species will respond in the same manner to rising CO 2 levels. Evidence from naturally acidified areas such as CO 2 seeps have shown that although a few species are resistant to elevated CO 2 , most lack sufficient resistance resulting in their decline. This has led to the simple grouping of coral species into “winners” and “losers,” but the physiological traits supporting this ecological assessment are yet to be fully understood. Here using CO 2 seeps, in two biogeographically distinct regions, we investigated whether physiological traits related to energy production [mitochondrial electron transport systems (ETSAs) activities] and biomass (protein contents) differed between winning and losing species in order to identify possible physiological traits of resistance to ocean acidification and whether they can be acquired during short-term transplantations. We show that winning species had a lower biomass (protein contents per coral surface area) resulting in a higher potential for energy production (biomass specific ETSA: ETSA per protein contents) compared to losing species. We hypothesize that winning species inherently allocate more energy toward inorganic growth (calcification) compared to somatic (tissue) growth. In contrast, we found that losing species that show a higher biomass under reference p CO 2 experienced a loss in biomass and variable response in area-specific ETSA that did not translate in an increase in biomass-specific ETSA following either short-term (4–5 months) or even life-long acclimation to elevated p CO 2 conditions. Our results suggest that resistance to ocean acidification in corals may not be acquired within a single generation or through the selection of physiologically resistant individuals. This reinforces current evidence suggesting that ocean acidification will reshape coral communities around the world, selecting species that have an inherent resistance to elevated p CO 2 .\n
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\n\n \n \n Aiuppa, A., Hall-Spencer, J. M., Milazzo, M., Turco, G., Caliro, S., & Di Napoli, R.\n\n\n \n \n \n \n \n Volcanic CO$_{\\textrm{2}}$ seep geochemistry and use in understanding ocean acidification.\n \n \n \n \n\n\n \n\n\n\n
Biogeochemistry, 152(1): 93–115. January 2021.\n
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@article{aiuppa_volcanic_2021,\n\ttitle = {Volcanic {CO}$_{\\textrm{2}}$ seep geochemistry and use in understanding ocean acidification},\n\tvolume = {152},\n\tissn = {0168-2563, 1573-515X},\n\turl = {http://link.springer.com/10.1007/s10533-020-00737-9},\n\tdoi = {10.1007/s10533-020-00737-9},\n\tabstract = {Abstract\n \n Ocean acidification is one of the most dramatic effects of the massive atmospheric release of anthropogenic carbon dioxide (CO\n 2\n ) that has occurred since the Industrial Revolution, although its effects on marine ecosystems are not well understood. Submarine volcanic hydrothermal fields have geochemical conditions that provide opportunities to characterise the effects of elevated levels of seawater CO\n 2\n on marine life in the field. Here, we review the geochemical aspects of shallow marine CO\n 2\n -rich seeps worldwide, focusing on both gas composition and water chemistry. We then describe the geochemical effects of volcanic CO\n 2\n seepage on the overlying seawater column. We also present new geochemical data and the first synthesis of marine biological community changes from one of the best-studied marine CO\n 2\n seep sites in the world (off Vulcano Island, Sicily). In areas of intense bubbling, extremely high levels of pCO\n 2\n ({\\textgreater} 10,000 μatm) result in low seawater pH ({\\textless} 6) and undersaturation of aragonite and calcite in an area devoid of calcified organisms such as shelled molluscs and hard corals. Around 100–400 m away from the Vulcano seeps the geochemistry of the seawater becomes analogous to future ocean acidification conditions with dissolved carbon dioxide levels falling from 900 to 420 μatm as seawater pH rises from 7.6 to 8.0. Calcified species such as coralline algae and sea urchins fare increasingly well as sessile communities shift from domination by a few resilient species (such as uncalcified algae and polychaetes) to a diverse and complex community (including abundant calcified algae and sea urchins) as the seawater returns to ambient levels of CO\n 2\n . Laboratory advances in our understanding of species sensitivity to high CO\n 2\n and low pH seawater, reveal how marine organisms react to simulated ocean acidification conditions (e.g., using energetic trade-offs for calcification, reproduction, growth and survival). Research at volcanic marine seeps, such as those off Vulcano, highlight consistent ecosystem responses to rising levels of seawater CO\n 2\n , with the simplification of food webs, losses in functional diversity and reduced provisioning of goods and services for humans.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2021-07-27},\n\tjournal = {Biogeochemistry},\n\tauthor = {Aiuppa, A. and Hall-Spencer, J. M. and Milazzo, M. and Turco, G. and Caliro, S. and Di Napoli, R.},\n\tmonth = jan,\n\tyear = {2021},\n\tpages = {93--115},\n}\n\n\n
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\n Abstract Ocean acidification is one of the most dramatic effects of the massive atmospheric release of anthropogenic carbon dioxide (CO 2 ) that has occurred since the Industrial Revolution, although its effects on marine ecosystems are not well understood. Submarine volcanic hydrothermal fields have geochemical conditions that provide opportunities to characterise the effects of elevated levels of seawater CO 2 on marine life in the field. Here, we review the geochemical aspects of shallow marine CO 2 -rich seeps worldwide, focusing on both gas composition and water chemistry. We then describe the geochemical effects of volcanic CO 2 seepage on the overlying seawater column. We also present new geochemical data and the first synthesis of marine biological community changes from one of the best-studied marine CO 2 seep sites in the world (off Vulcano Island, Sicily). In areas of intense bubbling, extremely high levels of pCO 2 (\\textgreater 10,000 μatm) result in low seawater pH (\\textless 6) and undersaturation of aragonite and calcite in an area devoid of calcified organisms such as shelled molluscs and hard corals. Around 100–400 m away from the Vulcano seeps the geochemistry of the seawater becomes analogous to future ocean acidification conditions with dissolved carbon dioxide levels falling from 900 to 420 μatm as seawater pH rises from 7.6 to 8.0. Calcified species such as coralline algae and sea urchins fare increasingly well as sessile communities shift from domination by a few resilient species (such as uncalcified algae and polychaetes) to a diverse and complex community (including abundant calcified algae and sea urchins) as the seawater returns to ambient levels of CO 2 . Laboratory advances in our understanding of species sensitivity to high CO 2 and low pH seawater, reveal how marine organisms react to simulated ocean acidification conditions (e.g., using energetic trade-offs for calcification, reproduction, growth and survival). Research at volcanic marine seeps, such as those off Vulcano, highlight consistent ecosystem responses to rising levels of seawater CO 2 , with the simplification of food webs, losses in functional diversity and reduced provisioning of goods and services for humans.\n
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\n\n \n \n Allen, R. J., Summerfield, T. C., Harvey, B. P., Agostini, S., Rastrick, S. P., Hall-Spencer, J. M., & Hoffmann, L. J.\n\n\n \n \n \n \n \n Species turnover underpins the effect of elevated CO$_{\\textrm{2}}$ on biofilm communities through early succession.\n \n \n \n \n\n\n \n\n\n\n
Climate Change Ecology, 2: 100017. December 2021.\n
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@article{allen_species_2021,\n\ttitle = {Species turnover underpins the effect of elevated {CO}$_{\\textrm{2}}$ on biofilm communities through early succession},\n\tvolume = {2},\n\tissn = {26669005},\n\turl = {https://linkinghub.elsevier.com/retrieve/pii/S2666900521000174},\n\tdoi = {10.1016/j.ecochg.2021.100017},\n\tlanguage = {en},\n\turldate = {2022-03-16},\n\tjournal = {Climate Change Ecology},\n\tauthor = {Allen, Ro J. and Summerfield, Tina C. and Harvey, Ben P. and Agostini, Sylvain and Rastrick, Samuel P.S. and Hall-Spencer, Jason M. and Hoffmann, Linn J.},\n\tmonth = dec,\n\tyear = {2021},\n\tpages = {100017},\n}\n\n\n
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\n\n \n \n Geissler, L., Meunier, V., Rädecker, N., Perna, G., Rodolfo-Metalpa, R., Houlbrèque, F., & Voolstra, C. R.\n\n\n \n \n \n \n \n Highly variable and non-complex diazotroph communities in corals from ambient and high CO$_{\\textrm{2}}$ environments.\n \n \n \n \n\n\n \n\n\n\n
Frontiers in Marine Science, 8: 754682. October 2021.\n
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@article{geissler_highly_2021,\n\ttitle = {Highly variable and non-complex diazotroph communities in corals from ambient and high {CO}$_{\\textrm{2}}$ environments},\n\tvolume = {8},\n\tissn = {2296-7745},\n\turl = {https://www.frontiersin.org/articles/10.3389/fmars.2021.754682/full},\n\tdoi = {10.3389/fmars.2021.754682},\n\tabstract = {The ecological success of corals depends on their association with microalgae and a diverse bacterial assemblage. Ocean acidification (OA), among other stressors, threatens to impair host-microbial metabolic interactions that underlie coral holobiont functioning. Volcanic CO\n 2\n seeps offer a unique opportunity to study the effects of OA in natural reef settings and provide insight into the long-term adaptations under a low pH environment. Here we compared nitrogen-fixing bacteria (diazotrophs) associated with four coral species (\n Pocillopora damicornis\n ,\n Galaxea fascicularis\n ,\n Acropora secale\n , and\n Porites rus\n ) collected from CO\n 2\n seeps at Tutum Bay (Papua New Guinea) with those from a nearby ambient CO\n 2\n site using\n nifH\n amplicon sequencing to characterize the effects of seawater pH on bacterial communities and nitrogen cycling. Diazotroph communities were of generally low diversity across all coral species and for both sampling sites. Out of a total of 25 identified diazotroph taxa, 14 were associated with\n P. damicornis\n , of which 9 were shared across coral species. None of the diazotroph taxa, however, were consistently found across all coral species or across all samples within a species pointing to a high degree of diazotroph community variability. Rather, the majority of sampled colonies were dominated by one or two diazotroph taxa of high relative abundance.\n Pocillopora damicornis\n and\n Galaxea fascicularis\n that were sampled in both environments showed contrasting community assemblages between sites. In\n P. damicornis\n , Gammaproteobacteria and Cyanobacteria were prevalent under ambient\n p\n CO\n 2\n , while a single member of the family Rhodobacteraceae was present at high relative abundance at the high\n p\n CO\n 2\n site. Conversely, in\n G. fascicularis\n diazotroph communities were indifferent between both sites. Diazotroph community changes in response to OA seem thus variable within as well as between host species, potentially arguing for haphazard diazotroph community assembly. This warrants further research into the underlying factors structuring diazotroph community assemblages and their functional role in the coral holobiont.},\n\turldate = {2022-03-16},\n\tjournal = {Frontiers in Marine Science},\n\tauthor = {Geissler, Laura and Meunier, Valentine and Rädecker, Nils and Perna, Gabriela and Rodolfo-Metalpa, Riccardo and Houlbrèque, Fanny and Voolstra, Christian R.},\n\tmonth = oct,\n\tyear = {2021},\n\tpages = {754682},\n}\n\n\n
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\n The ecological success of corals depends on their association with microalgae and a diverse bacterial assemblage. Ocean acidification (OA), among other stressors, threatens to impair host-microbial metabolic interactions that underlie coral holobiont functioning. Volcanic CO 2 seeps offer a unique opportunity to study the effects of OA in natural reef settings and provide insight into the long-term adaptations under a low pH environment. Here we compared nitrogen-fixing bacteria (diazotrophs) associated with four coral species ( Pocillopora damicornis , Galaxea fascicularis , Acropora secale , and Porites rus ) collected from CO 2 seeps at Tutum Bay (Papua New Guinea) with those from a nearby ambient CO 2 site using nifH amplicon sequencing to characterize the effects of seawater pH on bacterial communities and nitrogen cycling. Diazotroph communities were of generally low diversity across all coral species and for both sampling sites. Out of a total of 25 identified diazotroph taxa, 14 were associated with P. damicornis , of which 9 were shared across coral species. None of the diazotroph taxa, however, were consistently found across all coral species or across all samples within a species pointing to a high degree of diazotroph community variability. Rather, the majority of sampled colonies were dominated by one or two diazotroph taxa of high relative abundance. Pocillopora damicornis and Galaxea fascicularis that were sampled in both environments showed contrasting community assemblages between sites. In P. damicornis , Gammaproteobacteria and Cyanobacteria were prevalent under ambient p CO 2 , while a single member of the family Rhodobacteraceae was present at high relative abundance at the high p CO 2 site. Conversely, in G. fascicularis diazotroph communities were indifferent between both sites. Diazotroph community changes in response to OA seem thus variable within as well as between host species, potentially arguing for haphazard diazotroph community assembly. This warrants further research into the underlying factors structuring diazotroph community assemblages and their functional role in the coral holobiont.\n
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\n\n \n \n Harvey, B. P., Allen, R., Agostini, S., Hoffmann, L. J., Kon, K., Summerfield, T. C., Wada, S., & Hall-Spencer, J. M.\n\n\n \n \n \n \n \n Feedback mechanisms stabilise degraded turf algal systems at a CO$_{\\textrm{2}}$ seep site.\n \n \n \n \n\n\n \n\n\n\n
Communications Biology, 4(1): 219. December 2021.\n
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@article{harvey_feedback_2021,\n\ttitle = {Feedback mechanisms stabilise degraded turf algal systems at a {CO}$_{\\textrm{2}}$ seep site},\n\tvolume = {4},\n\tissn = {2399-3642},\n\turl = {http://www.nature.com/articles/s42003-021-01712-2},\n\tdoi = {10.1038/s42003-021-01712-2},\n\tabstract = {Abstract\n Human activities are rapidly changing the structure and function of coastal marine ecosystems. Large-scale replacement of kelp forests and coral reefs with turf algal mats is resulting in homogenous habitats that have less ecological and human value. Ocean acidification has strong potential to substantially favour turf algae growth, which led us to examine the mechanisms that stabilise turf algal states. Here we show that ocean acidification promotes turf algae over corals and macroalgae, mediating new habitat conditions that create stabilising feedback loops (altered physicochemical environment and microbial community, and an inhibition of recruitment) capable of locking turf systems in place. Such feedbacks help explain why degraded coastal habitats persist after being initially pushed past the tipping point by global and local anthropogenic stressors. An understanding of the mechanisms that stabilise degraded coastal habitats can be incorporated into adaptive management to better protect the contribution of coastal systems to human wellbeing.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2021-07-27},\n\tjournal = {Communications Biology},\n\tauthor = {Harvey, Ben P. and Allen, Ro and Agostini, Sylvain and Hoffmann, Linn J. and Kon, Koetsu and Summerfield, Tina C. and Wada, Shigeki and Hall-Spencer, Jason M.},\n\tmonth = dec,\n\tyear = {2021},\n\tpages = {219},\n}\n\n\n
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\n Abstract Human activities are rapidly changing the structure and function of coastal marine ecosystems. Large-scale replacement of kelp forests and coral reefs with turf algal mats is resulting in homogenous habitats that have less ecological and human value. Ocean acidification has strong potential to substantially favour turf algae growth, which led us to examine the mechanisms that stabilise turf algal states. Here we show that ocean acidification promotes turf algae over corals and macroalgae, mediating new habitat conditions that create stabilising feedback loops (altered physicochemical environment and microbial community, and an inhibition of recruitment) capable of locking turf systems in place. Such feedbacks help explain why degraded coastal habitats persist after being initially pushed past the tipping point by global and local anthropogenic stressors. An understanding of the mechanisms that stabilise degraded coastal habitats can be incorporated into adaptive management to better protect the contribution of coastal systems to human wellbeing.\n
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\n\n \n \n Harvey, B. P., Kon, K., Agostini, S., Wada, S., & Hall‐Spencer, J. M.\n\n\n \n \n \n \n \n Ocean acidification locks algal communities in a species‐poor early successional stage.\n \n \n \n \n\n\n \n\n\n\n
Global Change Biology, 27(10): 2174–2187. May 2021.\n
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@article{harvey_ocean_2021,\n\ttitle = {Ocean acidification locks algal communities in a species‐poor early successional stage},\n\tvolume = {27},\n\tissn = {1354-1013, 1365-2486},\n\turl = {https://onlinelibrary.wiley.com/doi/10.1111/gcb.15455},\n\tdoi = {10.1111/gcb.15455},\n\tlanguage = {en},\n\tnumber = {10},\n\turldate = {2021-07-27},\n\tjournal = {Global Change Biology},\n\tauthor = {Harvey, Ben P. and Kon, Koetsu and Agostini, Sylvain and Wada, Shigeki and Hall‐Spencer, Jason M.},\n\tmonth = may,\n\tyear = {2021},\n\tpages = {2174--2187},\n}\n\n\n
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\n\n \n \n Maggioni, F., Pujo-Pay, M., Aucan, J., Cerrano, C., Calcinai, B., Payri, C., Benzoni, F., Letourneur, Y., & Rodolfo-Metalpa, R.\n\n\n \n \n \n \n \n The Bouraké semi-enclosed lagoon (New Caledonia) – a natural laboratory to study the lifelong adaptation of a coral reef ecosystem to extreme environmental conditions.\n \n \n \n \n\n\n \n\n\n\n
Biogeosciences, 18(18): 5117–5140. September 2021.\n
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@article{maggioni_bourake_2021,\n\ttitle = {The {Bouraké} semi-enclosed lagoon ({New} {Caledonia}) – a natural laboratory to study the lifelong adaptation of a coral reef ecosystem to extreme environmental conditions},\n\tvolume = {18},\n\tissn = {1726-4189},\n\turl = {https://bg.copernicus.org/articles/18/5117/2021/},\n\tdoi = {10.5194/bg-18-5117-2021},\n\tabstract = {Abstract. According to current experimental evidence, coral reefs could disappear within the century if CO2 emissions remain unabated. However, recent discoveries of diverse and high cover reefs that already live under extreme conditions suggest that some corals might thrive well under hot, high-pCO2, and deoxygenated seawater. Volcanic CO2 vents, semi-enclosed lagoons, and mangrove estuaries are unique study sites where one or more ecologically relevant parameters for life in the oceans are close to or even worse than currently projected for the year 2100. Although they do not perfectly mimic future conditions, these natural laboratories offer unique opportunities to explore the mechanisms that reef species could use to keep pace with climate change. To achieve this, it is essential to characterize their environment as a whole and accurately consider all possible environmental factors that may differ from what is expected in the future, possibly altering the ecosystem response. This study focuses on the semi-enclosed lagoon of Bouraké (New Caledonia, southwest Pacific Ocean) where a healthy reef ecosystem thrives in warm, acidified, and deoxygenated water. We used a multi-scale approach to characterize the main physical-chemical parameters and mapped the benthic community composition (i.e., corals, sponges, and macroalgae). The data revealed that most physical and chemical parameters are regulated by the tide, strongly fluctuate three to four times a day, and are entirely predictable. The seawater pH and dissolved oxygen decrease during falling tide and reach extreme low values at low tide (7.2 pHT and 1.9 mg O2 L−1 at Bouraké vs. 7.9 pHT and 5.5 mg O2 L−1 at reference reefs). Dissolved oxygen, temperature, and pH fluctuate according to the tide by up to 4.91 mg O2 L−1, 6.50 ∘C, and 0.69 pHT units on a single day. Furthermore, the concentration of most of the chemical parameters was 1 to 5 times higher at the Bouraké lagoon, particularly for organic and inorganic carbon and nitrogen but also for some nutrients, notably silicates. Surprisingly, despite extreme environmental conditions and altered seawater chemical composition measured at Bouraké, our results reveal a diverse and high cover community of macroalgae, sponges, and corals accounting for 28, 11, and 66 species, respectively. Both environmental variability and nutrient imbalance might contribute to their survival under such extreme environmental conditions. We describe the natural dynamics of the Bouraké ecosystem and its relevance as a natural laboratory to investigate the benthic organism's adaptive responses to multiple extreme environmental conditions.},\n\tlanguage = {en},\n\tnumber = {18},\n\turldate = {2022-03-16},\n\tjournal = {Biogeosciences},\n\tauthor = {Maggioni, Federica and Pujo-Pay, Mireille and Aucan, Jérome and Cerrano, Carlo and Calcinai, Barbara and Payri, Claude and Benzoni, Francesca and Letourneur, Yves and Rodolfo-Metalpa, Riccardo},\n\tmonth = sep,\n\tyear = {2021},\n\tpages = {5117--5140},\n}\n\n\n
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\n Abstract. According to current experimental evidence, coral reefs could disappear within the century if CO2 emissions remain unabated. However, recent discoveries of diverse and high cover reefs that already live under extreme conditions suggest that some corals might thrive well under hot, high-pCO2, and deoxygenated seawater. Volcanic CO2 vents, semi-enclosed lagoons, and mangrove estuaries are unique study sites where one or more ecologically relevant parameters for life in the oceans are close to or even worse than currently projected for the year 2100. Although they do not perfectly mimic future conditions, these natural laboratories offer unique opportunities to explore the mechanisms that reef species could use to keep pace with climate change. To achieve this, it is essential to characterize their environment as a whole and accurately consider all possible environmental factors that may differ from what is expected in the future, possibly altering the ecosystem response. This study focuses on the semi-enclosed lagoon of Bouraké (New Caledonia, southwest Pacific Ocean) where a healthy reef ecosystem thrives in warm, acidified, and deoxygenated water. We used a multi-scale approach to characterize the main physical-chemical parameters and mapped the benthic community composition (i.e., corals, sponges, and macroalgae). The data revealed that most physical and chemical parameters are regulated by the tide, strongly fluctuate three to four times a day, and are entirely predictable. The seawater pH and dissolved oxygen decrease during falling tide and reach extreme low values at low tide (7.2 pHT and 1.9 mg O2 L−1 at Bouraké vs. 7.9 pHT and 5.5 mg O2 L−1 at reference reefs). Dissolved oxygen, temperature, and pH fluctuate according to the tide by up to 4.91 mg O2 L−1, 6.50 ∘C, and 0.69 pHT units on a single day. Furthermore, the concentration of most of the chemical parameters was 1 to 5 times higher at the Bouraké lagoon, particularly for organic and inorganic carbon and nitrogen but also for some nutrients, notably silicates. Surprisingly, despite extreme environmental conditions and altered seawater chemical composition measured at Bouraké, our results reveal a diverse and high cover community of macroalgae, sponges, and corals accounting for 28, 11, and 66 species, respectively. Both environmental variability and nutrient imbalance might contribute to their survival under such extreme environmental conditions. We describe the natural dynamics of the Bouraké ecosystem and its relevance as a natural laboratory to investigate the benthic organism's adaptive responses to multiple extreme environmental conditions.\n
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\n\n \n \n Martins, M., Carreiro-Silva, M., Martins, G. M., Barcelos e Ramos, J., Viveiros, F., Couto, R. P., Parra, H., Monteiro, J., Gallo, F., Silva, C., Teodósio, A., Guilini, K., Hall-Spencer, J. M., Leitão, F., Chícharo, L., & Range, P.\n\n\n \n \n \n \n \n Ervilia castanea (Mollusca, Bivalvia) populations adversely affected at CO$_{\\textrm{2}}$ seeps in the North Atlantic.\n \n \n \n \n\n\n \n\n\n\n
Science of The Total Environment, 754: 142044. February 2021.\n
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@article{martins_ervilia_2021,\n\ttitle = {\\textit{{Ervilia} castanea} ({Mollusca}, {Bivalvia}) populations adversely affected at {CO}$_{\\textrm{2}}$ seeps in the {North} {Atlantic}},\n\tvolume = {754},\n\tissn = {00489697},\n\turl = {https://linkinghub.elsevier.com/retrieve/pii/S004896972035573X},\n\tdoi = {10.1016/j.scitotenv.2020.142044},\n\tlanguage = {en},\n\turldate = {2022-03-16},\n\tjournal = {Science of The Total Environment},\n\tauthor = {Martins, Marta and Carreiro-Silva, Marina and Martins, Gustavo M. and Barcelos e Ramos, Joana and Viveiros, Fátima and Couto, Ruben P. and Parra, Hugo and Monteiro, João and Gallo, Francesca and Silva, Catarina and Teodósio, Alexandra and Guilini, Katja and Hall-Spencer, Jason M. and Leitão, Francisco and Chícharo, Luís and Range, Pedro},\n\tmonth = feb,\n\tyear = {2021},\n\tpages = {142044},\n}\n\n\n
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\n\n \n \n Meunier, V., Geissler, L., Bonnet, S., Rädecker, N., Perna, G., Grosso, O., Lambert, C., Rodolfo‐Metalpa, R., Voolstra, C. R., & Houlbrèque, F.\n\n\n \n \n \n \n \n Microbes support enhanced nitrogen requirements of coral holobionts in a high CO $_{\\textrm{2}}$ environment.\n \n \n \n \n\n\n \n\n\n\n
Molecular Ecology, 30(22): 5888–5899. November 2021.\n
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@article{meunier_microbes_2021,\n\ttitle = {Microbes support enhanced nitrogen requirements of coral holobionts in a high {CO} $_{\\textrm{2}}$ environment},\n\tvolume = {30},\n\tissn = {0962-1083, 1365-294X},\n\turl = {https://onlinelibrary.wiley.com/doi/10.1111/mec.16163},\n\tdoi = {10.1111/mec.16163},\n\tlanguage = {en},\n\tnumber = {22},\n\turldate = {2022-03-16},\n\tjournal = {Molecular Ecology},\n\tauthor = {Meunier, Valentine and Geissler, Laura and Bonnet, Sophie and Rädecker, Nils and Perna, Gabriela and Grosso, Olivier and Lambert, Christophe and Rodolfo‐Metalpa, Riccardo and Voolstra, Christian R. and Houlbrèque, Fanny},\n\tmonth = nov,\n\tyear = {2021},\n\tpages = {5888--5899},\n}\n\n\n
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\n\n \n \n Peña, V., Harvey, B. P., Agostini, S., Porzio, L., Milazzo, M., Horta, P., Le Gall, L., & Hall‐Spencer, J. M.\n\n\n \n \n \n \n \n Major loss of coralline algal diversity in response to ocean acidification.\n \n \n \n \n\n\n \n\n\n\n
Global Change Biology, 27(19): 4785–4798. October 2021.\n
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@article{pena_major_2021,\n\ttitle = {Major loss of coralline algal diversity in response to ocean acidification},\n\tvolume = {27},\n\tissn = {1354-1013, 1365-2486},\n\turl = {https://onlinelibrary.wiley.com/doi/10.1111/gcb.15757},\n\tdoi = {10.1111/gcb.15757},\n\tlanguage = {en},\n\tnumber = {19},\n\turldate = {2021-12-21},\n\tjournal = {Global Change Biology},\n\tauthor = {Peña, Viviana and Harvey, Ben P. and Agostini, Sylvain and Porzio, Lucia and Milazzo, Marco and Horta, Paulo and Le Gall, Line and Hall‐Spencer, Jason M.},\n\tmonth = oct,\n\tyear = {2021},\n\tpages = {4785--4798},\n}\n\n\n
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\n\n \n \n Spatafora, D., Quattrocchi, F., Cattano, C., Badalamenti, F., & Milazzo, M.\n\n\n \n \n \n \n \n Nest guarding behaviour of a temperate wrasse differs between sites off Mediterranean CO$_{\\textrm{2}}$ seeps.\n \n \n \n \n\n\n \n\n\n\n
Science of The Total Environment, 799: 149376. December 2021.\n
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@article{spatafora_nest_2021,\n\ttitle = {Nest guarding behaviour of a temperate wrasse differs between sites off {Mediterranean} {CO}$_{\\textrm{2}}$ seeps},\n\tvolume = {799},\n\tissn = {00489697},\n\turl = {https://linkinghub.elsevier.com/retrieve/pii/S0048969721044491},\n\tdoi = {10.1016/j.scitotenv.2021.149376},\n\tlanguage = {en},\n\turldate = {2022-03-16},\n\tjournal = {Science of The Total Environment},\n\tauthor = {Spatafora, Davide and Quattrocchi, Federico and Cattano, Carlo and Badalamenti, Fabio and Milazzo, Marco},\n\tmonth = dec,\n\tyear = {2021},\n\tpages = {149376},\n}\n\n\n
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\n\n \n \n Wada, S., Agostini, S., Harvey, B. P., Omori, Y., & Hall-Spencer, J. M.\n\n\n \n \n \n \n \n Ocean acidification increases phytobenthic carbon fixation and export in a warm-temperate system.\n \n \n \n \n\n\n \n\n\n\n
Estuarine, Coastal and Shelf Science, 250: 107113. March 2021.\n
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@article{wada_ocean_2021,\n\ttitle = {Ocean acidification increases phytobenthic carbon fixation and export in a warm-temperate system},\n\tvolume = {250},\n\tissn = {02727714},\n\turl = {https://linkinghub.elsevier.com/retrieve/pii/S0272771420308441},\n\tdoi = {10.1016/j.ecss.2020.107113},\n\tlanguage = {en},\n\turldate = {2021-07-27},\n\tjournal = {Estuarine, Coastal and Shelf Science},\n\tauthor = {Wada, Shigeki and Agostini, Sylvain and Harvey, Ben P. and Omori, Yuko and Hall-Spencer, Jason M.},\n\tmonth = mar,\n\tyear = {2021},\n\tpages = {107113},\n}\n\n\n
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