Coral Reefs最新文献_第8页

“Hidden” biodiversity: a new amphipod genus dominates epifauna in association with a mesophotic black coral forest "隐藏的 "生物多样性：一种新的片脚类动物属在与中生黑珊瑚林有关的附生动物中占主导地位

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-04-15 DOI: 10.1007/s00338-024-02491-y

Sandra Navarro-Mayoral, Benoit Gouillieux, Victoria Fernandez-Gonzalez, Fernando Tuya, Ninon Lecoquierre, Lorenzo Bramanti, Lucas Terrana, Fernando Espino, Jean-François Flot, Ricardo Haroun, Francisco Otero-Ferrer

{"title":"“Hidden” biodiversity: a new amphipod genus dominates epifauna in association with a mesophotic black coral forest","authors":"Sandra Navarro-Mayoral, Benoit Gouillieux, Victoria Fernandez-Gonzalez, Fernando Tuya, Ninon Lecoquierre, Lorenzo Bramanti, Lucas Terrana, Fernando Espino, Jean-François Flot, Ricardo Haroun, Francisco Otero-Ferrer","doi":"10.1007/s00338-024-02491-y","DOIUrl":"https://doi.org/10.1007/s00338-024-02491-y","url":null,"abstract":"Black corals are important components of mesophotic and deep-water marine habitats. Their presence at great depths (e.g., 50 to 200 m) makes accessibility difficult, limiting our understanding of the associated biodiversity. Amphipods dominate vagile epifauna in marine habitats around the world, fulfilling important ecosystem functions. However, there are no studies on amphipods exclusively associated with black corals, including relationships between their ecological patterns (e.g., abundances) and the size of coral colonies. We investigated the epifaunal composition and abundance associated with black coral colonies of Antipathella wollastoni in the subtropical eastern Atlantic Ocean. In total, 1,736 epifaunal individuals were identified, of which 1,706 (98.27%) were amphipods, belonging to 6 taxa. We identified and described a new amphipod genus and species within the Stenothoidae family, Wollastenothoe minuta gen. nov., sp. nov., which outnumbered the amphipod assemblage (86.15%) and provided a complete taxonomic key of Stenothoidae family including this new finding. For the first time, the association between an amphipod species and a black coral was described, including a strong correlation between coral colony size and amphipod abundances. This study demonstrates that epifauna associated with mesophotic black corals remains largely undescribed.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"25 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local habitat heterogeneity rivals regional differences in coral thermal tolerance 当地栖息地的异质性与珊瑚耐热性的区域差异相匹配

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-04-03 DOI: 10.1007/s00338-024-02484-x

Kristen T. Brown, Marcelina P. Martynek, Katie L. Barott

{"title":"Local habitat heterogeneity rivals regional differences in coral thermal tolerance","authors":"Kristen T. Brown, Marcelina P. Martynek, Katie L. Barott","doi":"10.1007/s00338-024-02484-x","DOIUrl":"https://doi.org/10.1007/s00338-024-02484-x","url":null,"abstract":"Variable temperature regimes that expose corals to sublethal heat stress have been recognized as a mechanism to increase coral thermal tolerance and lessen coral bleaching. However, there is a need to better understand which thermal regimes maximize coral stress hardening. Here, standardized thermal stress assays were used to determine the relative thermal tolerance of three divergent genera of corals (Acropora, Pocillopora, Porites) originating from six reef sites representing an increasing gradient of annual mean diel temperature fluctuations of 1–3 °C day−1. Bleaching severity and dark-acclimated photochemical yield (i.e., Fv/Fm) were quantified following exposure to five temperature treatments ranging from 23.0 to 36.3 °C. The greatest thermal tolerance (i.e., Fv/Fm effective dose 50) was found at the site with intermediate mean diel temperature variability (2.2 °C day−1), suggesting there is an optimal priming exposure that leads to maximal thermal tolerance. Interestingly, Acropora and Pocillopora originating from the least thermally variable regimes (< 1.3 °C day−1) had lower thermal tolerance than corals from the most variable sites (> 2.8 °C day−1), whereas the opposite was true for Porites, suggesting divergent responses across taxa. Remarkably, comparisons across global studies revealed that the range in coral thermal tolerance uncovered in this study across a single reef (< 5 km) were as large as differences observed across vast latitudinal gradients (300–900 km). This finding indicates that local gene flow could improve thermal tolerance between habitats. However, as climate change continues, exposure to intensifying marine heatwaves is already compromising thermal priming as a mechanism to enhance coral thermal tolerance and bleaching resistance.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"158 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling the potential spread of the non-native regal demoiselle, Neopomacentrus cyanomos, in the western Atlantic 非本地蓑鲉（Neopomacentrus cyanomos）在西大西洋的潜在传播模型

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-04-01 DOI: 10.1007/s00338-024-02490-z

Melanie M. Esch, Catherine S. Jarnevich, Nuno Simões, Timothy R. McClanahan, Alastair R. Harborne

{"title":"Modeling the potential spread of the non-native regal demoiselle, Neopomacentrus cyanomos, in the western Atlantic","authors":"Melanie M. Esch, Catherine S. Jarnevich, Nuno Simões, Timothy R. McClanahan, Alastair R. Harborne","doi":"10.1007/s00338-024-02490-z","DOIUrl":"https://doi.org/10.1007/s00338-024-02490-z","url":null,"abstract":"Predicting the potential distribution of a non-native species can assist management efforts to mitigate impacts on recipient ecosystems. However, such predictions are lacking for marine species, such as the non-native regal demoiselle, Neopomacentrus cyanomos, that is currently expanding its distribution in the western Atlantic. We used correlative species distribution models with three common algorithms to predict suitable habitat for N. cyanomos in the region. We compared models developed using native, non-native, and global occurrences to differentiate drivers across separate ranges using a suite of 12 environmental characteristics. While final models included an ensemble of variables, the majority ranked the combined effect of temperature variables as a key predictor correlated with the distribution of N. cyanomos. Habitat suitability increased as water temperatures increased beyond 16 °C and where annual thermal ranges were greater than 10 °C at the shallowest depth with substrate within a study cell (~ 9.2 km2 resolution). Habitat suitability also increased where maximum surface temperatures were greater than 27 °C. In the non-native range, the proportion of reef available in each cell was another important variable increasing the suitable habitat for N. cyanomos. Our models predicted high habitat suitability for N. cyanomos throughout the Greater Caribbean, in higher latitudes along North and South American Atlantic coasts, in the eastern Pacific Ocean, and highlights key areas where managers can monitor and target potential removal efforts. The distribution of this non-native species is likely to continue expanding throughout the region with little known about potential implications on native communities.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"6 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140583802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dissecting coral recovery: bleaching reduces reproductive output in Acropora millepora 剖析珊瑚的恢复：白化会降低 Acropora millepora 的生殖产量

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-03-20 DOI: 10.1007/s00338-024-02483-y

Nico D. Briggs, Cathie A. Page, Christine Giuliano, Cinzia Alessi, Mia Hoogenboom, Line K. Bay, Carly J. Randall

{"title":"Dissecting coral recovery: bleaching reduces reproductive output in Acropora millepora","authors":"Nico D. Briggs, Cathie A. Page, Christine Giuliano, Cinzia Alessi, Mia Hoogenboom, Line K. Bay, Carly J. Randall","doi":"10.1007/s00338-024-02483-y","DOIUrl":"https://doi.org/10.1007/s00338-024-02483-y","url":null,"abstract":"Increasingly frequent and severe bleaching events driven by climate change are decreasing coral populations worldwide. Recovery of these populations relies on reproduction by the survivors of such events including local and upstream larval sources. Yet, corals that survive bleaching may be impaired by sublethal effects that suppress reproduction, reducing larval input to reefs, and consequently impeding recovery. We investigated the impact of the 2020 mass-bleaching event on Acropora millepora reproduction on inshore, turbid reefs in Woppaburra sea Country (the Keppel Islands), to improve our understanding of the effects of bleaching on coral populations. A. millepora experienced high bleaching incidence but low mortality across the island group during this event and thus constituted an ideal population to investigate potential sublethal effects on reproductive output. Six months after the heat wave, and just prior to spawning, we collected, decalcified, and dissected samples from 94 tagged A. millepora colonies with a known 2020 bleaching response, to investigate the relationships between stress severity and reproduction. Despite having regained their pigmentation, we detected a significant reduction in fecundity in colonies that had bleached severely. Considering the impact of the bleaching event on the coral population sampled (i.e., mortality, bleaching severity and colony size), coupled with reductions in fecundity, we estimated a total decrease in population-level reproductive output of 21%. These results suggest that reduced reproductive output may impact recovery of coral populations following bleaching and should be considered alongside traditional estimates of coral mortality.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"19 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140203114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genomics of a novel ecological phase shift: the case of a ‘weedy’ Montipora coral in Ulithi, Micronesia 新生态阶段转变的基因组学：密克罗尼西亚乌利希的 "杂草 "蒙蒂波拉珊瑚案例

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-03-17 DOI: 10.1007/s00338-024-02486-9

Giacomo Bernardi, Remy Gatins, Michelle Paddack, Peter Nelson, John Rulmal, Nicole Crane

{"title":"Genomics of a novel ecological phase shift: the case of a ‘weedy’ Montipora coral in Ulithi, Micronesia","authors":"Giacomo Bernardi, Remy Gatins, Michelle Paddack, Peter Nelson, John Rulmal, Nicole Crane","doi":"10.1007/s00338-024-02486-9","DOIUrl":"https://doi.org/10.1007/s00338-024-02486-9","url":null,"abstract":"Local and global ecological stressors are leading to increased documentation of phase shifts in coral reefs from healthy stony corals to macrophytes. In more rare cases, phase shifts result in sponge, zoantharian or other dominant species. In Ulithi Atoll, Federated States of Micronesia, we have documented an unusual phase shift from reefs with a diverse stony coral assemblage to reefs dominated by a single species of stony coral: Montipora sp.—a coral-to-coral phase shift. This monospecific type of reef lowers fish diversity and biomass, impacting both ecological integrity, and livelihoods of reef-dependent human communities. In this study, we used a genomic approach to characterize such a reef. We assembled a de-novo reference genome and used RAD seq data with thousands of SNPs to determine if different reefs result from sexual or asexual reproduction, if weedy Montipora fragments are transported between islands by human activities, and if there is evidence of natural selection on specific genotypes, thus favoring spreading success. We found that sexual reproduction is predominant in the focal species, that there is no evidence of human-mediated spread, and that some genomic regions might be under selection. While such results eliminate a number of spreading hypotheses, more precise dispersal maps will be important to determine the tempo and mode of ‘invasion’ of Montipora in Ulithi Atoll. This study shows that selection and adaptation may be contributing to the success of a stony coral (e.g., Phase shift). While a stony coral may be successful in a disturbed environment, it does not necessarily provide the type of habitat that is conducive to high fish biomass and coral diversity. These results serve as a cautionary tale for restoration efforts that focus on single species coral resilience rather than ecosystem function.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"155 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Depth distribution and depth adaptation of microbiomes in juvenile and adult scleractinian corals (Pocillopora verrucosa) in the central South China Sea 南海中部幼年和成年硬骨珊瑚（Pocillopora verrucosa）微生物组的深度分布和深度适应性

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-03-15 DOI: 10.1007/s00338-024-02485-w

Zhenjun Qin, Nengbin Pan, Kefu Yu, Shuchang Chen, Xuelu Wei, Biao Chen, Xiaopeng Yu

{"title":"Depth distribution and depth adaptation of microbiomes in juvenile and adult scleractinian corals (Pocillopora verrucosa) in the central South China Sea","authors":"Zhenjun Qin, Nengbin Pan, Kefu Yu, Shuchang Chen, Xuelu Wei, Biao Chen, Xiaopeng Yu","doi":"10.1007/s00338-024-02485-w","DOIUrl":"https://doi.org/10.1007/s00338-024-02485-w","url":null,"abstract":"Environmental conditions at different water depths on tropical atolls are substantially different, but few studies have investigated the depth distribution and adaptation in the microbiomes of juvenile and adult corals. We collected samples of juvenile and adult Pocillopora verrucosa from different depths on an atoll in the central South China Sea and analyzed their communities of symbiotic Symbiodiniaceae and associated bacteria. Results showed that the Symbiodiniaceae communities were significantly different at different depths in both juvenile and adult P. verrucosa. Symbiodiniaceae community changed with increasing depth and was dominated by Durusdinium and Cladocopium at 1-m and 20-m depth, respectively. Furthermore, the composition and diversity of Symbiodiniaceae in juvenile and adult corals were different at the same depths. The compositions of associated bacterial communities at different depths also differed significantly between juvenile and adult P. verrucosa. The relative abundance of Endozoicomonas in juvenile and adult P. verrucosa increased with increasing depth, while the Thermus decreased. Our study suggests that juvenile and adult P. verrucosa corals in shallow-water regions associate with high abundances of thermotolerant Symbiodiniaceae and bacteria in the shallow reef flats with high temperature and intense solar radiation, but associate with Symbiodiniaceae and associated bacteria with high photosynthetic efficiency at greater depths.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"1 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A role for encrusting, endolithic sponges in the feeding of the parrotfish Scarus rubroviolaceus? Evidence of further trophic diversification in Indo-Pacific Scarini 结壳内生海绵在鹦嘴鲷觅食中的作用？印度洋-太平洋绯鲵进一步营养多样化的证据

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-03-13 DOI: 10.1007/s00338-024-02482-z

Georgina M. Nicholson, Kendall D. Clements

{"title":"A role for encrusting, endolithic sponges in the feeding of the parrotfish Scarus rubroviolaceus? Evidence of further trophic diversification in Indo-Pacific Scarini","authors":"Georgina M. Nicholson, Kendall D. Clements","doi":"10.1007/s00338-024-02482-z","DOIUrl":"https://doi.org/10.1007/s00338-024-02482-z","url":null,"abstract":"The speciose scarinine clade of coral reef parrotfishes display significant variation in trophic cranial morphology, yet are often described as generalist herbivores. The hypothesis that many parrotfishes target micro-photoautotrophs is a new framework within which to clarify parrotfish diets. Here, we investigate the dietary targets of Scarus rubroviolaceus using the feeding substrata extraction method and then compare the results to fourteen other syntopic parrotfish species. Scarus rubroviolaceus were followed on snorkel until repeated biting was observed. A 22 mm × 20 mm core was extracted around the bite. We identified and quantified the bite core biota by scraping the top 1 mm from bite cores for microscopy and 16S/18S small subunit rRNA metabarcoding. Filamentous cyanobacteria density on S. rubroviolaceus bite cores did not differ from the other fourteen parrotfish species, Calothrix (Nostocales) being the most frequently observed filamentous cyanobacteria for all fifteen parrotfish species. The 18S metabarcoding analysis detected the encrusting, endolithic sponge taxon Clionaida in the S. rubroviolaceus bite cores. We investigated the possibility of spongivory across all fifteen parrotfish species including an analysis of sponge-associated microbiota detected on the bite cores. This revealed a new axis of trophic partitioning with varying levels of spongivory amongst the fifteen Indo-Pacific parrotfish species. The bite cores of Cetoscarus ocellatus, Chlorurus spilurus, Chlorurus microrhinos, Scarus frenatus and S. rubroviolaceus particularly indicated spongivory. Our findings develop our understanding of parrotfish diet and provide further evidence that parrotfishes are specialized feeders and partition benthic trophic resources.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"14 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140117487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parasitism in reef fish communities: evaluating the roles of host traits, habitat use, and phylogeny on infection by Scaphanocephalus (Trematoda) 珊瑚礁鱼类群落中的寄生现象：评估寄主特征、栖息地利用和系统发育对鳞鳃鱼感染的作用（吸虫纲）

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-03-11 DOI: 10.1007/s00338-024-02480-1

Rémon J. Malawauw, Julia Piaskowy, Lars J. V. ter Horst, Dana M. Calhoun, Pieter T. J. Johnson

{"title":"Parasitism in reef fish communities: evaluating the roles of host traits, habitat use, and phylogeny on infection by Scaphanocephalus (Trematoda)","authors":"Rémon J. Malawauw, Julia Piaskowy, Lars J. V. ter Horst, Dana M. Calhoun, Pieter T. J. Johnson","doi":"10.1007/s00338-024-02480-1","DOIUrl":"https://doi.org/10.1007/s00338-024-02480-1","url":null,"abstract":"Parasites represent a critically understudied component of reef communities—a knowledge gap that has become more evident as infectious diseases emerge. Here, we test the roles of competing ecological and evolutionary factors in driving infections by an emerging infectious phenomenon: Black spot syndrome (BSS) in Caribbean reef fishes. BSS, a condition associated with localized hyperpigmentation in the dermis and fins of fishes, has recently been linked to infection by trematode parasites in the genus Scaphanocephalus. Using phylogenetic generalized linear mixed models, we evaluated the influence of host phylogeny, habitat preference, body size, and trophic position on infection abundance. Metacercariae of Scaphanocephalus were recorded in 29 of 41 fish species, including 21 new host species records, and within 306 fish (62.3% prevalence). Among species, infection load increased significantly with host body size and decreased with host trophic level, such that large-bodied herbivores tended to support the most infection. There was no significant effect of host phylogeny on infection load. These results suggest the parasite is a generalist in its use of fish intermediate hosts and emphasize the influence of local variation in parasite exposure risk. Overall, the count of visible spots per fish was a positive predictor of Scaphanocephalus abundance among species and individuals, although not all fish species exhibited spots, even when infection loads were high. Findings from this study indicate that Scaphanocephalus infections are far more prevalent in reef fishes than previously recognized and highlight the importance of investigating infection patterns beyond the external symptoms of BSS.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"67 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the Allen Coral Atlas benthic habitat map product for New Caledonia using representative habitat observations from a multi-species fishery assessment 利用多物种渔业评估中的代表性生境观测结果，评估新喀里多尼亚艾伦珊瑚图集底栖生物生境地图产品

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-03-09 DOI: 10.1007/s00338-024-02481-0

Andréfouët Serge, Brisset Maële, Georget Stéphane, Gilbert Antoine

{"title":"Evaluation of the Allen Coral Atlas benthic habitat map product for New Caledonia using representative habitat observations from a multi-species fishery assessment","authors":"Andréfouët Serge, Brisset Maële, Georget Stéphane, Gilbert Antoine","doi":"10.1007/s00338-024-02481-0","DOIUrl":"https://doi.org/10.1007/s00338-024-02481-0","url":null,"abstract":"Several remote sensing projects have produced coral reef habitat maps globally. This includes the Allen Coral Atlas (ACA) project. The present study focuses on assessing the accuracy of the ACA 6-class benthic habitat products available for New Caledonia in the 0–10-m depth range. The assessment involves using independent control data collected through thousands of in situ photographs of the benthic environment during sea cucumber stock assessments on multiple sites around New Caledonia. The overall accuracy of the ACA benthic product ranked from 20 to 67% depending on the sites and evaluation method. These results are generally lower than those achieved by other global and local coral reef mapping and products which can be primarily explained by the lack of local ground-truth data to train the classifications. In addition, we discuss other significant misclassifications immediately detectable through historical knowledge, and the limited relevance of the classification scheme to represent the actual diversity of New Caledonia coral reef habitats, a key criteria to guide conservation with habitat maps. Overall, the study highlights the limitations of the ACA benthic product that users should be aware of and offer some recommendations and caveats for both potential users and map producers in other areas.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"14 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Space partitioning within groups of social coral reef fish 社会性珊瑚礁鱼群内部的空间分割

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-03-07 DOI: 10.1007/s00338-023-02460-x

Anael Engel, Yaela Reuben, Irina Kolesnikov, Dmitri Churilov, Ran Nathan, Amatzia Genin

{"title":"Space partitioning within groups of social coral reef fish","authors":"Anael Engel, Yaela Reuben, Irina Kolesnikov, Dmitri Churilov, Ran Nathan, Amatzia Genin","doi":"10.1007/s00338-023-02460-x","DOIUrl":"https://doi.org/10.1007/s00338-023-02460-x","url":null,"abstract":"Site-attached fish that form social groups may face a trade-off between the advantages of group living and the disadvantages related to intra-group competition for food. A possible solution for the latter is space partitioning among group members. Technological limitations related to individual tagging and underwater tracking hindered such spatial studies in grouping fishes. Here, using underwater video cameras and recent developments in deep learning tools, we successfully tracked the 3D movements of individually tagged fish in 4 groups of the damselfish Dascyllus marginatus in the coral reef of Eilat, Red Sea. Our findings, based on tracking sessions lasting 3–11 min that were recorded during a period of > 1 month, show that the individual fish kept separate foraging spaces with minimal overlap and that this separation was stable in time. When the tidally driven current reversed, the separation was kept, and a corresponding reversal was found in the positions of each fish relative to the coral and its neighbors. We propose that the stable spatial partitioning observed in our study is a primary mechanism through which site-attached species can organize themselves in order to reduce intra-group competition.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"23 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0