Journal of Experimental Marine Biology and Ecology最新文献

{"title":"Seafoam avoidance is driven by both chemosensory and contact cues and points towards the presence of soft-surface thigmotaxis in the intertidal gastropod Littorina littorea","authors":"Solène Cazalis-Henry ,&nbsp;Nicolas Spilmont ,&nbsp;Elsa Breton ,&nbsp;Florence Elias ,&nbsp;Laurent Seuront","doi":"10.1016/j.jembe.2025.152085","DOIUrl":"10.1016/j.jembe.2025.152085","url":null,"abstract":"<div><div>Seafoam accumulation in coastal waters has long been acknowledged as ecologically, socially and economically relevant. However, its putative effects on the intertidal biota have been alarmingly under-researched despite the ubiquitous nature of onshore foam formation. This study examines the behavioural responses of the common periwinkle, <em>Littorina littorea</em>, exposed to two types of seafoam: a fresh seafoam (freshly formed) and an aged seafoam (collected after three hours of exposure in the field), using experimental assays carried out under controlled laboratory conditions. <em>L. littorea</em> consistently avoid seafoam, and exhibit a stronger aversion for fresh seafoam. They avoid crossing both seafoam, suggesting that contact cues play a crucial role in this avoidance behaviour. In this context, we introduce the concept of soft-surface thigmotaxis, by which <em>L. littorea</em> is able to follow soft physical discontinuities. Snails exhibited more tortuous movements and reduced speed before actually getting into physical contact with the fresh seafoam, suggesting that chemosensory influence foam avoidance, probably due to repellent volatile compounds requiring further identification. Observations suggest that snails show differential responses potentially influenced by variations in foam properties, such as phytoplankton content and the physical properties of the seafoam. Seafoam avoidance by <em>L. littorea</em> could have wider ecological implications by disrupting the snails' ability to find refuges, increasing their vulnerability to other environmental stresses. Investigating surfactants and pollutants in seafoam is crucial due to their toxicity to aquatic life. The study highlights the need for interdisciplinary research to fully understand and mitigate seafoam's effects on intertidal organism.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"583 ","pages":"Article 152085"},"PeriodicalIF":1.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Red mangrove (Rhizophora mangle) roots serve as additional valuable habitat for the eastern oyster (Crassostrea virginica) in a subtropical estuary","authors":"Dinorah H. Chacin ,&nbsp;Susan S. Bell ,&nbsp;Christopher D. Stallings","doi":"10.1016/j.jembe.2025.152083","DOIUrl":"10.1016/j.jembe.2025.152083","url":null,"abstract":"<div><div>Occasionally, two foundation species co-exist within seascapes, where one is nested within, or near, the other. However, we often lack an understanding of interactions between co-existing foundation species and how such interactions may affect their demographic rates. Oysters and mangroves are foundation species that often co-occur in subtropical estuaries, with oysters assembled into reefs found near mangrove-rimmed shorelines or oysters growing attached to mangrove prop roots. We evaluated demographics and potential ecological mechanisms affecting eastern oysters (<em>Crassostrea virginica</em>) living on intertidal reefs compared with those growing on red mangrove roots (<em>Rhizophora mangle</em>) using a series of field surveys and by measuring evaporation rates as proxy for desiccation. We found that total oyster density on mangrove roots was over two times higher per unit sample area compared to intertidal reefs. This difference occurred despite slightly higher oyster settlement rates to reefs than mangrove roots, suggesting higher post-settlement mortality in reefs compared to roots. Higher oyster mortality on reefs was consistent with our observations of more predators, higher percentage of gaping oysters, and greater abiotic stress on oysters on reefs versus mangrove root habitats. The comparative demography of oysters on reefs and mangrove roots provides insight into mechanisms by which mangrove roots represent valuable habitats for eastern oysters. Moreover, these findings suggest that future oyster restoration efforts may benefit by considering restoring oyster reefs in close proximity to red mangroves given their additional source of potential oyster settlers.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"583 ","pages":"Article 152083"},"PeriodicalIF":1.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crevices increase feeding behavior, crawling behavior and glucose level of stressed sea cucumbers (Apostichopus japonicus)","authors":"Huiyan Wang ,&nbsp;Ruihuan Tian ,&nbsp;Guo Wu,&nbsp;Xiyuan Huang,&nbsp;Zihe Zhao,&nbsp;Peng Ding,&nbsp;Chong Zhao","doi":"10.1016/j.jembe.2025.152088","DOIUrl":"10.1016/j.jembe.2025.152088","url":null,"abstract":"<div><div>Sea cucumbers seek refuge to crevices in adverse environments. However, the mechanism by which crevices mitigate the adverse impacts of stress on sea cucumbers remains totally unknown. The present study investigated the detrimental effects of mechanical perturbation on behavior and physiology of sea cucumbers (<em>Apostichopus japonicus</em>). We subjected sea cucumbers to mechanical perturbation by placing them in a sieve submerged in water and stirring the sieve parallel to the water surface to simulate common mechanical perturbation in seed production. We found that mechanical perturbation significantly reduced cortisol, glucose, crawling frequency, and feeding duration of <em>A. japonicus</em>. These results suggest that mechanical perturbation decreases cortisol and glucose levels, potentially impacting feeding and crawling behaviors of <em>A. japonicus</em>.</div><div>This study further investigated how crevices mitigated the negative effects of mechanical perturbation. There was a significant increase in the residence time of <em>A. japonicus</em> within crevices, while <em>A. japonicus</em> without crevices exhibited significantly increased movement distances after mechanical perturbation. These results indicate a preference among <em>A. japonicus</em> for inhabiting crevices or actively seeking such habitats following mechanical perturbation. Following mechanical perturbation, <em>A. japonicus</em> exhibited a significantly decrease in feeding time and crawling frequency compared to those that had been inhabiting crevices for 7 h. Sea cucumbers in the crevice showed a significantly higher crawling frequency after being exposed to 7 h of mechanical perturbation, compared to the individuals not in the crevice. These results indicate that crevices serve as an efficacious mechanism for ameliorating the negative impacts of mechanical perturbation on sea cucumber behaviors. Further, the glucose level increased significantly with the increase of time in the crevice in sea cucumbers subjected to mechanical perturbation.</div><div>In summary, crevices attenuate the deleterious impacts of mechanical perturbation on sea cucumbers by enhancing glucose level, crawling, and feeding behaviors, thereby probably promoting the production efficiency in aquaculture of <em>A. japonicus</em>. The study elucidates the mechanism by which crevices alleviate stress in <em>A. japonicus</em>, providing valuable insights into the seed production.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"583 ","pages":"Article 152088"},"PeriodicalIF":1.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"eDNA metabarcoding detection of nearshore juvenile white sharks (Carcharodon carcharias) and prey fish communities","authors":"Zachariah S. Merson ,&nbsp;Elizabeth E. Jahn ,&nbsp;Matthew A. Barnes ,&nbsp;Emily A. Spurgeon ,&nbsp;Patrick T. Rex ,&nbsp;Jack T. Elstner ,&nbsp;Yamilla N. Samara Chacon ,&nbsp;James M. Anderson ,&nbsp;Whitney D. Jones ,&nbsp;Christopher G. Lowe","doi":"10.1016/j.jembe.2025.152084","DOIUrl":"10.1016/j.jembe.2025.152084","url":null,"abstract":"<div><div>Traditional methods for assessing fish communities often face biased catchabilities, resulting in inconsistent detection of certain species. Pelagic elasmobranchs, such as white sharks (<em>Carcharodon carcharias</em>) are challenging to detect and quantify due to their low density, large size, and high mobility. Metabarcoding, an emerging approach, identifies species through genetic sequencing of environmental DNA (eDNA) samples, but requires further calibration due to its novelty. We assessed the efficacy of eDNA approaches to detect white sharks and associated fish prey communities. Juvenile white sharks (JWS) in the Southern California Bight form dense aggregations, offering a unique setting to compare methods. We collected eDNA from 491 seawater samples at three current and two former aggregation sites. Metabarcoding and white shark-specific qPCR were compared to aerial drone surveys and passive acoustic telemetry for JWS, and to beach seines and baited remote underwater videos for the broader fish community. Overall, metabarcoding captured the greatest species richness of the community methods. We found that metabarcoding detection probability of fish caught by beach seine was predicted by abundance, but not biomass; notably high-biomass catches were primarily elasmobranchs. Quantitative PCR was twice as effective as metabarcoding in detecting JWS presence, and raw acoustic detections best predicted metabarcoding results. Potential differences in eDNA shedding rate between teleosts and elasmobranchs may explain why JWS were less effectively detected by eDNA approaches, and why only seine count influenced detection probability. Species-specific primers may better capture low-density elasmobranchs. Despite limitations, metabarcoding represents an effective complementary tool to biomonitoring due to the additional diversity captured.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"583 ","pages":"Article 152084"},"PeriodicalIF":1.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of suspended sediment on survival, growth, and nutritional condition of green-lipped mussel spat (Perna canaliculus, Gmelin, 1791)","authors":"Brandy S. Biggar ,&nbsp;Andrew Jeffs ,&nbsp;Jenny R. Hillman","doi":"10.1016/j.jembe.2024.152074","DOIUrl":"10.1016/j.jembe.2024.152074","url":null,"abstract":"<div><div>Suspended sediment is a significant current threat to coastal ecosystems in many parts of the world. Sediment runoff into the ocean is increasing due to numerous human activities, such as agriculture, deforestation, construction, and mining. Additionally, climate change is impacting local weather patterns, with many regions experiencing marked changes in the frequency and extent of precipitation. Extreme weather events, such as cyclones, can increase suspended sediment (SS) in coastal waters by up to 100-fold. This rapid change in SS can negatively affect filter-feeding bivalves by diminishing their feeding efficiency, often preventing feeding until the sediment settles. In New Zealand, juveniles of the green-lipped mussel (<em>Perna canaliculus</em>) have rudimentary structures for capturing and sorting food particles from the seston, which are prone to clogging and damage. In this study, the effects of a range of SS concentrations (0–1250 mg L⁻¹) on the survival, growth, and nutritional condition of juvenile green-lipped mussels (1–2 mm SL) were determined over two time scales (5 and 30 days) in controlled laboratory experiments. Neither mortality nor nutritional condition were impacted by SS. However, the presence of SS positively affected growth (<em>p</em> &lt; 0.05) and mussel settlement location (<em>p</em> &lt; 0.01) at both time scales. The results show that, under these conditions, SS levels ≤1250 mg L⁻¹ are not apparently harmful to <em>P. canaliculus</em> spat and may even be advantageous.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"582 ","pages":"Article 152074"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kelp-bed dynamics across scales: Expanding distributional analysis capacity with spatial pattern metrics and modelling","authors":"Anne P. St-Pierre,&nbsp;Patrick Gagnon","doi":"10.1016/j.jembe.2024.152080","DOIUrl":"10.1016/j.jembe.2024.152080","url":null,"abstract":"<div><div>Spatial pattern metrics are used to investigate the links between a species' distributional patterns and underlying ecological drivers. These metrics, in combination with remotely acquired imagery, offer a novel approach for the study of kelp bed-urchin barren systems and enable the study of fully submerged kelp distribution at broad spatial scales (km²) difficult to achieve through traditional scuba-based methods. This study uses aerial imagery of 2.85 km² of shallow (&lt;7 m deep) seabed around five islands in the Mingan Archipelago (northern Gulf of St. Lawrence, Canada) to (1) quantify kelp distribution patterns using spatial pattern metrics at large, intermediate, and small spatial scales and (2) examine correlations between kelp presence and physical and biological variables over a broad spatial scale. Imagery was classified visually and divided into two benthic classes: kelp and non-kelp. Variability in spatial pattern metrics and kelp coverage across spatial scales indicated that kelp distribution is not uniform among islands, suggesting that the spatial extent over which observations are obtained strongly influences the patterns detected. Kelp covered 62 % of the entire study area but with substantial variation (46 % to 87 %) among islands. Kelp and non-kelp patches varied in size from 225 to 891,225 m², while exhibiting considerable variation in geometric complexity. Over 80 % of the kelp patches were relatively small (&lt;1350 m²), although the fewer, larger patches contained most (98 %) of the kelp-covered seabed and were located in shallower water, near the coastline. Both the kelp and non-kelp benthic classes were highly aggregated as suggested by clumpiness indices of 0.67 and 0.59, respectively. Modelling results showed that increasing depth, urchin density, and relative exposure to waves independently led to a decrease in kelp presence, with depth having the strongest correlation, followed by urchin density and relative exposure. This study expands knowledge of kelp distribution patterns at broad spatial scales largely unexplored for fully submerged species and is a step forward towards a comprehensive understanding of scale-dependent processes regulating their distribution.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"582 ","pages":"Article 152080"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The ecological effects of hard-bottom habitat degradation on the Florida stone crab","authors":"Devon M. Pharo ,&nbsp;Donald C. Behringer","doi":"10.1016/j.jembe.2024.152075","DOIUrl":"10.1016/j.jembe.2024.152075","url":null,"abstract":"<div><div>Repeated cyanobacterial blooms in Florida Bay have resulted in the degradation of hard-bottom habitat throughout the region. Despite the loss of structure-forming sponges, nothing is known about the effects on the iconic Florida stone crab, <em>Menippe mercenaria</em>, which utilize hard-bottom to shelter and forage. We examined the potential impacts of these algal blooms by comparing crab nutritional condition, trophic position, and site fidelity between bloom-impacted and non-impacted regions. <em>Menippe mercenaria</em> from both regions were of similar nutritional condition; however, δ¹⁵N stable isotope analysis revealed <em>M. mercenaria</em> to have greater trophic variability in bloom-impacted regions, suggesting crabs in degraded habitats foraged on a wider variety of prey. δ¹³C measurements showed a marked shift between regions, suggesting the source of primary production in these regions differed in δ¹³C values, species composition, or both. Site and den fidelity remained similar; likely due to the abundance of solution holes available as shelters. Overall, results indicate <em>M. mercenaria</em> have high resiliency to the habitat degradation caused by these blooms, but fundamental changes in their trophic ecology suggest that blooms could be causing a broader alteration to these communities.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"582 ","pages":"Article 152075"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of two calcein administration techniques for marking the shell of the blue mussels (Mytilus spp.) infected with pathogenic microalgae Coccomyxa","authors":"Michael Zuykov ,&nbsp;Michel Gosselin ,&nbsp;Philippe Archambault ,&nbsp;Michael Schindler","doi":"10.1016/j.jembe.2024.152077","DOIUrl":"10.1016/j.jembe.2024.152077","url":null,"abstract":"<div><div>The presence of the L-shaped shell deformity (LSSD) is a reliable biomineral marker for non-lethal detection of wild blue mussels (<em>Mytilus</em> spp.) infected with the unicellular photosynthetic microalgae <em>Coccomyxa</em> sp. However, the LSSD formation rate is unknown. Most literature regarding bivalve shell sclerochronology advocates the fluorochrome calcein as an ideal growth marker. Administration technique of calcein-seawater solution for mussels, injection into mantle cavity or immersion, influences mark quality and staining. The best technique cannot be predicted in advance. Three circumstances may impact the dyeing success for <em>Coccomyxa</em>-infected mussels: mantle colonization with algae, increase in mucus production and biophysiological control in alga-mussel association. This report examines how injection (in field condition) and immersion (for 2 h - field condition; 20 h - laboratory condition) affect shell marking in adult (60–70 mm shell length) <em>Coccomyxa</em>-infected <em>Mytilus</em> spp. Uninfected wild and farmed mussels are used in parallel experiments for comparative purposes. After the staining procedures (calcein concentration 150 mg L ‐1), mussels were caged for 55 days in the Lower St. Lawrence Estuary (Québec, Canada). Results demonstrate that uninfected mussels showed fluorescent marks regardless of the administration techniques, whereas in <em>Coccomyxa</em>-infected mussels marks were visible only after immersion for 20 h. This may suggest that dyeing success could be managed by unknown aspects of biophysiological control in alga-mussel symbiosis. A comparison of images made in 2019 and 2023 indicates no change in calcein marks brightness 4 years after the end of shell staining experiments.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"582 ","pages":"Article 152077"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intrinsic factors affecting predator failure in crab-gastropod encounters and their implications for repair scar frequencies","authors":"Steven E. Mendonca ,&nbsp;Carrie L. Tyler ,&nbsp;Kristina M. Barclay ,&nbsp;Lindsey R. Leighton","doi":"10.1016/j.jembe.2024.152069","DOIUrl":"10.1016/j.jembe.2024.152069","url":null,"abstract":"<div><div>Repair scars result from sublethal predator damage which is regrown, permanently recording predator-prey encounters. Although interactions between crabs and gastropods are well studied, it is not clear under what conditions these encounters lead to the generation of repair scars. As failed attacks generate repair scars, here, we use arena experiments to investigate intrinsic factors affecting the likelihood of predator failure using the crab, <em>Cancer productus</em>, and two of its common gastropod prey, <em>Nucella ostrina</em> and <em>Tegula funebralis</em>. Regression models indicate that <em>C. productus</em> was 44 % more likely to fail in encounters with <em>T. funebralis</em> than those with <em>N. ostrina,</em> which may be due to differences in shell strength and shape. In addition, encounters with <em>T. funebralis</em> were much longer in duration than those with <em>N. ostrina,</em> particularly for large prey attacked by small predators. Predator size had a direct effect on attack outcomes, particularly for <em>T. funebralis</em>, and the long duration of encounters suggests that in natural settings, extrinsic factors could potentially have large effects on failure rates. Field data show that <em>T. funebralis</em> populations tend to have greater repair frequencies than do coexisting <em>N. ostrina.</em> We propose that differences in repair frequency between <em>T. funebralis</em> and <em>N. ostrina</em> at the same location are likely due to intrinsic factors. However, repair scar frequencies may also reflect the density of small predators, as repair scars may primarily result from small crabs, which are also more likely to be interrupted by extrinsic factors in natural settings.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"582 ","pages":"Article 152069"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of elevated temperature on erosion of Saccharina latissima (Laminariales, sugar kelp) blades","authors":"Xiaowei Ding ,&nbsp;Corina P.D. Brussaard ,&nbsp;Klaas R. Timmermans","doi":"10.1016/j.jembe.2024.152071","DOIUrl":"10.1016/j.jembe.2024.152071","url":null,"abstract":"<div><div>The critical role of kelp as an ecosystem engineer (nutrient cycling, habitat formation) is well recognized but under threat. Recent declines in natural kelp populations worldwide have been linked to global warming-induced rising temperatures of the ocean. There is, however, a noticeable gap in knowledge about the effects of temperature on the erosion of (distal parts of) the kelp blades. This erosion process, where blades tissue is lost, is crucial to understanding kelp health and nutrient dynamics in marine ecosystems. This study aimed to quantify the erosion rate of <em>Saccharina latissima</em> (Laminariales, sugar kelp) blades and the subsequent release of total organic carbon and total nitrogen during erosion under naturally increased temperatures (from 16.1 °C to 22.5 °C) and further elevated temperatures (from 16.1 °C to 27.1 °C). A significant increase in the erosion rate of the distal parts of blades was observed in both temperature treatments. Substantial amounts (4.24 ± 0.31 mg cm⁻² of C and 0.32 ± 0.13 mg cm⁻² of N) of nutrients were released from <em>S. latissima</em>, especially under sub-lethal temperature conditions. Under further elevated temperatures, with a prolonged period of higher temperature and a maximum temperature of 27.1 °C, the effects were stronger, and erosion occurred along the edges of the whole blade. Our findings suggest that rising temperatures accelerate the erosion of <em>S. latissima</em> blades, highlighting a reason for the decline of kelp forests under climate change, as well as the potential impacts on nutrient cycling in the oceans.</div></div>","PeriodicalId":50197,"journal":{"name":"Journal of Experimental Marine Biology and Ecology","volume":"582 ","pages":"Article 152071"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}