Marine Ecology Progress Series最新文献_第2页

Acartia tonsa grazing on the harmful dinoflagellate Dinophysis acuminata reduces copepod survival and increases extracellular toxin concentrations 吞食有害甲藻 Dinophysis acuminata 的 Acartia tona 会降低桡足类的存活率并增加细胞外毒素浓度

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-19 DOI: 10.3354/meps14666

Megan Ladds, Juliette Smith, Vanessa Strohm, Christopher J. Gobler

{"title":"Acartia tonsa grazing on the harmful dinoflagellate Dinophysis acuminata reduces copepod survival and increases extracellular toxin concentrations","authors":"Megan Ladds, Juliette Smith, Vanessa Strohm, Christopher J. Gobler","doi":"10.3354/meps14666","DOIUrl":"https://doi.org/10.3354/meps14666","url":null,"abstract":"ABSTRACT: Dinophysis spp. synthesize lipophilic toxins and form harmful algal blooms (HABs) across the globe. Zooplankton can play a role in controlling HABs and be a vector for HAB toxins; however, no study has explored the grazing and survival of copepods fed cultured Dinophysis. Here, the copepod Acartia tonsa isolated from New York, USA, was fed 3 strains of D. acuminata from the eastern USA (Massachutsetts, New York, Virginia), as well as 2 non-toxic prey (Rhodomonas salina and Gymnodinium aureolum). Grazing and survival rates of A. tonsa were quantified along with toxins. A. tonsa fed on D. acuminata at rates similar to R. salina and G. aureolum. Mixed-prey experiments suggested that D. acuminata was not acutely toxic to A. tonsa. Extracellular levels of okadaic acid (OA) significantly increased (p ≤ 0.05) and extracellular pectenotoxin (PTX2) increased by 50% upon exposure to copepods, suggesting that grazers stimulated extracellular toxin release. During 3 wk survival experiments, copepods consuming D. acuminata as a sole food source displayed significantly lower survival rates compared to those fed a control diet of R. salina (p < 0.05). This depressed survivorship was ameliorated by feeding the copepods a diet of D. acuminata mixed with G. aureolum, suggesting that nutritional deficiencies drove mortality. Since grazing on Dinophysis may be low when prey abundance is low, reduced grazing may contribute to bloom development; however, as blooms intensify, grazing may increase, potentially causing a reduction in copepod survival and continued bloom progression. Finally, grazing-induced increases in OA and PTX2 could enhance the introduction of Dinophysis-derived toxins into food webs.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"117 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Marine biophysical conditions influence the vertical and horizontal distribution of sub-adult Chinook salmon in nearshore marine waters 海洋生物物理条件影响亚成体大鳞大麻哈鱼在近岸海域的垂直和水平分布

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14672

Joseph M. Smith, Brian J. Burke, Doug Jackson, Brian Wells, Brian Beckman, Will Duguid, Thomas P. Quinn, David D. Huff

{"title":"Marine biophysical conditions influence the vertical and horizontal distribution of sub-adult Chinook salmon in nearshore marine waters","authors":"Joseph M. Smith, Brian J. Burke, Doug Jackson, Brian Wells, Brian Beckman, Will Duguid, Thomas P. Quinn, David D. Huff","doi":"10.3354/meps14672","DOIUrl":"https://doi.org/10.3354/meps14672","url":null,"abstract":"ABSTRACT: The present study quantified the vertical and horizontal distribution of sub-adult Chinook salmon Oncorhynchus tshawytscha in nearshore marine environments. Depth-specific hook and line sampling was conducted along the Pacific Ocean coast of Washington, USA. Our analysis, based on 187 Chinook salmon from 1299 sampling deployments and 6616 hooks, revealed a wide distribution of salmon in nearshore marine waters, with distinct patterns associated with fish size and age. Chinook salmon that spent one winter in marine waters were more likely to be caught at greater depths than those in their first year at sea, and larger fish were found at greater depths than smaller fish. The probability of Chinook salmon capture varied with depth, showing a higher likelihood of capture at midwater (>15 m from the surface and >5 m from the bottom) and near (<5 m) the bottom compared to near (<15 m) the surface. Additionally, environmental variables such as sea surface temperature, sea surface chlorophyll a, minutes to low tide, and boat speed unimodally influenced capture probability. Our study contributes valuable insights into the spatiotemporal ecology of Chinook salmon, offering a more mechanistic perspective for their management and conservation. The identified relationships between environmental covariates and Chinook salmon distribution can be used to inform life cycle models used to manage and protect this at-risk species and the ecosystem processes that depend on them, particularly in the context of changing oceanic conditions and their role as both predator and prey in marine ecosystems.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"26 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Brood-grooming behavior of American lobsters Homarus americanus in conditions of ocean warming and acidification 海洋变暖和酸化条件下美洲龙虾的育雏行为

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14667

A. R. Sisti, B. Jellison, J. D. Shields, E. B. Rivest

{"title":"Brood-grooming behavior of American lobsters Homarus americanus in conditions of ocean warming and acidification","authors":"A. R. Sisti, B. Jellison, J. D. Shields, E. B. Rivest","doi":"10.3354/meps14667","DOIUrl":"https://doi.org/10.3354/meps14667","url":null,"abstract":"ABSTRACT: The relationship between adverse environmental conditions and grooming behavior is an unresolved mechanism whereby a changing climate may impact reproductive success in animals that brood their eggs. Although important to embryo survival and development in decapod crustaceans, brood grooming by ovigerous females may be impacted by energetically demanding conditions associated with climate change, which may contribute to lethal and sublethal outcomes for brood health and survival. Despite its potential importance to reproduction, brood-grooming behavior has not been empirically described in the American lobster Homarus americanus H. Milne Edwards, 1837, a commercially important marine decapod. The relationship between brood-grooming behavior, temperature, and pH was explored at different points in the embryogenesis of American lobsters. For a period of 5 mo, egg-bearing females were exposed to different combinations of ecologically relevant conditions of temperature and pH, including those reflecting ocean warming (+4°C), ocean acidification (-0.5 pH), and the combination of warming and acidification. Fecundity, embryo development, and female grooming behavior were assessed at multiple time points. The proportion of time that lobsters spent fanning, but not probing, their broods increased with advancing embryo development. Neither egg loss, nor any measured brood-grooming behaviors, varied significantly with temperature or pH in this experiment. American lobster reproduction appears well suited to tolerate future conditions of ocean acidification and warming based on the ability to maintain stable brood grooming and brood mortality levels under a range of conditions.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"40 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variation in top-down control of red algae epibiosis in the White Sea 白海红藻附生病自上而下控制的差异

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14664

Alexandra Chava, Anna Artemieva, Eugeniy Yakovis

{"title":"Variation in top-down control of red algae epibiosis in the White Sea","authors":"Alexandra Chava, Anna Artemieva, Eugeniy Yakovis","doi":"10.3354/meps14664","DOIUrl":"https://doi.org/10.3354/meps14664","url":null,"abstract":"ABSTRACT: Epibiosis is shaped by a complex interplay of biotic interactions involving hosts, epibionts, and mobile consumers. In temperate waters, consumer control by mesograzers prevents complete overgrowth of seaweeds. In polar waters, the mechanisms determining the abundances of sessile organisms associated with seaweeds are unknown. We empirically assessed the strength of the consumer control effect on the colonization of the sub-arctic red seaweed Phycodrys rubens by caging individual plants in the field in the shallow subtidal of the White Sea (65°N). We compared epibiosis on plants in consumer exclosure cages, in cages with the mesopredatory shrimp Spirontocaris phippsii, in semi-enclosed cages, and on unmanipulated plants in a cold year (2014) and a warm year (2015). Despite the dramatic interannual variation in consumer control, the mean total cover of epibionts in the absence of consumers never exceeded 15%. While consumers had a substantial effect on the total epibiont cover in the warm year and a nearly negligible effect in the cold year, the total cover of unmanipulated algae was similar in 2014 and 2015. Bryozoans, which were selectively impacted by consumers—particularly shrimp—dominated in both years. However, bryozoan abundance was much lower in 2015, when the abundance of hydroids, sponges, and bivalves—less affected by consumers—increased. Consumer control is not a key factor preventing most Phycodrys plants from being heavily overgrown. Yet, smaller plants, which have a higher epibiont cover, may indirectly benefit from consumers. Future climate changes are likely to make the Phycodrys epibiosis increasingly top-down regulated.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"38 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aerobic dive limit in short-finned pilot whales Globicephala macrorhynchus: an assessment of behavioral criteria 短鳍领航鲸（Globicephala macrorhynchus）的有氧潜水极限：行为标准评估

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14670

Ashley M. Blawas, Lauren E. Miller, Jeanne M. Shearer, William R. Cioffi, Daniel L. Webster, Zachary T. Swaim, Heather J. Foley, Danielle M. Waples, Nicola J. Quick, Douglas P. Nowacek, Andrew J. Read

{"title":"Aerobic dive limit in short-finned pilot whales Globicephala macrorhynchus: an assessment of behavioral criteria","authors":"Ashley M. Blawas, Lauren E. Miller, Jeanne M. Shearer, William R. Cioffi, Daniel L. Webster, Zachary T. Swaim, Heather J. Foley, Danielle M. Waples, Nicola J. Quick, Douglas P. Nowacek, Andrew J. Read","doi":"10.3354/meps14670","DOIUrl":"https://doi.org/10.3354/meps14670","url":null,"abstract":"ABSTRACT: Aerobic dive limits (ADLs) are a useful paradigm for assessing marine mammal diving ability. Given the allometry of total body oxygen stores and metabolic rate, larger animals should have increased diving capacities and thus elevated ADLs. The short-finned pilot whale Globicephala macrorhynchus is a deep-diving species with pronounced sexual size dimorphism, and individuals are regularly found in size-mixed groups. Therefore, we asked how body size constrains dive durations in this species and whether behavioral ADL (bADL), estimated as the 95th percentile of dive duration, is a useful measure of physiological ADL. We analyzed 30169 dives from 45 animals tagged with satellite-linked recorders off Cape Hatteras, North Carolina, and Jacksonville, Florida, USA, and determined a species-level bADL of 18.8 min and individual bADLs ranging from 13.9 to 22.1 min. To assess the influence of size on bADL, we estimated the body lengths of 19 whales from dorsal fin measurements. Body length did not fully explain intraspecific bADL variation, but similar dive distributions and lower bADL variance between animals tagged together indicated a potential effect of group membership. Moreover, individuals in Cape Hatteras had a significantly lower median bADL than those in Jacksonville, suggesting location may influence dive durations. These results indicate the potential impact of social and location-specific factors on bADL estimates in a deep-diving, sexually dimorphic species.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"60 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temporal and oceanographic factors differentially affect two size classes of white shark at a Southern California aggregation site 时间和海洋因素对南加州白鲨聚集地两个大小等级的不同影响

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14680

Douglas J. McCauley, John K. Parsons, Charles A. Braman, James M. Anderson, Jennifer E. Caselle, Emma J. Critchley, Aidan Glina, Francis H. Joyce, Christopher G. Lowe, Samantha Mladjov, Neil Nathan, Patrick T. Rex, Emily Spurgeon, Brian S. Stirling, Hillary S. Young

{"title":"Temporal and oceanographic factors differentially affect two size classes of white shark at a Southern California aggregation site","authors":"Douglas J. McCauley, John K. Parsons, Charles A. Braman, James M. Anderson, Jennifer E. Caselle, Emma J. Critchley, Aidan Glina, Francis H. Joyce, Christopher G. Lowe, Samantha Mladjov, Neil Nathan, Patrick T. Rex, Emily Spurgeon, Brian S. Stirling, Hillary S. Young","doi":"10.3354/meps14680","DOIUrl":"https://doi.org/10.3354/meps14680","url":null,"abstract":"ABSTRACT: Ontogenetic habitat shifts are a common feature of many marine species, including sharks, which face conservation threats when their distributions overlap with human resource extraction and habitat modification. White sharks Carcharodon carcharias, for example, exhibit a distinctly coastal phase as juveniles, with a limited distribution compared to the basin-scale range of adults. Using an unoccupied aerial vehicle (UAV), we studied a coastal aggregation site within a Southern California Bight nursery area to determine how fine-scale temporal and oceanographic factors affect white sharks at different developmental stages. White shark density, as measured via UAV, was highly variable across time of day and day of year, with modest variation across years. Typically, more sharks were observed in the late afternoon hours. Sharks, especially those <3 m total length, were observed more often during periods of colder seafloor temperatures, potentially reflecting avoidance of these colder, deeper waters by more cold-intolerant smaller white sharks. Alternate models incorporating sea surface temperature showed a very small but significant association between surface temperatures and <3 m total length white sharks for the months we surveyed, but no such association for larger sharks. There were no or only modest effects of visibility, swell height, chl a levels, sea state, and tidal height on UAV-observed shark density. Understanding how temporal patterns and oceanographic predictors of density change over time as well as how shark ontogeny interacts with these factors can help us to better understand how this species uses coastal habitats and predict when they may be more likely to share marine space with humans.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"38 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ontogenetic shifts in isotope-inferred trophic ecology of Atlantic bluefin tuna Thunnus thynnus in Atlantic Canada 加拿大大西洋蓝鳍金枪鱼（Thunnus thynnus）同位素推断营养生态学的世代变化

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14669

Jacob Burbank, Brianne Kelly, Alex Hanke, Hugues P. Benoît, Michael Power

{"title":"Ontogenetic shifts in isotope-inferred trophic ecology of Atlantic bluefin tuna Thunnus thynnus in Atlantic Canada","authors":"Jacob Burbank, Brianne Kelly, Alex Hanke, Hugues P. Benoît, Michael Power","doi":"10.3354/meps14669","DOIUrl":"https://doi.org/10.3354/meps14669","url":null,"abstract":"ABSTRACT: Upper trophic level predators can greatly influence the dynamics and productivity of forage fish species. Quantifying this influence requires information on prey consumption; however, establishing feeding habits of highly mobile predators is particularly challenging. Stable isotopes of carbon and nitrogen (δ13C and δ15N) have been applied to characterize the trophic ecology of Atlantic bluefin tuna Thunnus thynnus (ABFT) in several important regions; however, applications in Canada are lacking. Here, we used δ13C and δ15N values of ABFT muscle tissue collected in 2014-2018 on 2 important foraging grounds along the coast of Atlantic Canada to evaluate the temporally integrated trophic ecology of this ecologically and commercially important species. Populations of some small pelagic fish species in these areas have been depleted, and predation by ABFT is considered a potentially important contributor. Isotopic diet reconstructions found that Atlantic mackerel were the dominant prey in the southern Gulf of St. Lawrence, and a combination of Atlantic herring and sandlance were the most dominant prey consumed on the Scotian Shelf. Diet reconstructions identified an ontogenetic shift in prey consumption, with more sandlance consumed by smaller ABFT and a shift to higher consumption of Atlantic mackerel and Atlantic herring as fish increased in size. Isotopic niche overlap indicated relatively high overlap for adults among years, suggesting that ABFT did not show substantial inter-annual variation in their trophic ecology. Overall, the study provides insight into the trophic ecology of ABFT along the Atlantic Coast of Canada that can be integrated into investigations of predator impacts on depleted mackerel and herring populations.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"86 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating the influence of press and pulse disturbances on community dynamics of the Northeast US Large Marine Ecosystem 评估压力和脉冲干扰对美国东北部大型海洋生态系统群落动态的影响

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14663

Ileana F. Fenwick, Kurt C. Heim, Andrew J. Pershing, Kathy E. Mills, Sean M. Lucey, Janet A. Nye

{"title":"Evaluating the influence of press and pulse disturbances on community dynamics of the Northeast US Large Marine Ecosystem","authors":"Ileana F. Fenwick, Kurt C. Heim, Andrew J. Pershing, Kathy E. Mills, Sean M. Lucey, Janet A. Nye","doi":"10.3354/meps14663","DOIUrl":"https://doi.org/10.3354/meps14663","url":null,"abstract":"ABSTRACT: As climate change intensifies, there is a pressing concern regarding how ecological communities respond to disturbances occurring at different intensities and time scales. We explored how the type of disturbance influences the dynamics of a marine community. A pulse disturbance is an abrupt, high-magnitude shift in conditions that can cause immediate and significant impacts to an ecological community. Alternatively, press disturbances are long-term, multi-generational pressures acting on communities over time. The Northeast US Continental Shelf Large Marine Ecosystem (NES LME) is one of the fastest-warming regions in the world and has experienced historic overfishing. Assemblage shifts in the NES LME have previously been characterized; however, these were prior to an unprecedented pulse disturbance marine heatwave (MHW) event in 2012 followed by punctuated MHWs over the last decade. We quantified community change across the NES LME using a community trajectory analysis, a multivariate tool that utilizes geometric analyses and comparisons of community trajectories, to quantify shifts in dynamic beta diversity. We hypothesized that the pulse MHWs would strongly influence ecosystem structure; however, no significant impact was detected. Our analysis indicates that the NES LME continues to tropicalize. However, it was not the pulse MHW events that seemed to drive change but rather ecosystem overfishing and rising temperatures. We quantified beta diversity over time in marine communities undergoing abrupt environmental changes and press disturbances. When expanded globally, this analysis can compare how variable disturbance pressures may result in different manifestations of beta diversity change within marine assemblages.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"64 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increased temperatures impact the reproduction of localized estuarine kelp populations more than salinity or invasive species 温度升高对局部河口海带种群繁殖的影响大于盐度或入侵物种的影响

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14659

Angela R. Korabik, Suellen M. Dias, Genece V. Grisby, Edwin D. Grosholz

{"title":"Increased temperatures impact the reproduction of localized estuarine kelp populations more than salinity or invasive species","authors":"Angela R. Korabik, Suellen M. Dias, Genece V. Grisby, Edwin D. Grosholz","doi":"10.3354/meps14659","DOIUrl":"https://doi.org/10.3354/meps14659","url":null,"abstract":"ABSTRACT: Estuarine habitats regularly experience large variations in abiotic conditions such as temperature and salinity; however, under climate change and the increasing threat of invasive species, the pressure from both abiotic and biotic stresses has been increasing. Several studies have investigated the interactions of the adult stages of macroalgae; however, there is little understanding of how microscopic stages of Macrocystis pyrifera and Sargassum muticum interact or how climate change may influence this interaction. Our research considers the effects of climate-driven changes in temperature and salinity and their interactions with S. muticum on the growth and survival of M. pyrifera gametophytes from Tomales Bay, CA, USA. Using kelp culturing experiments, we tested (1) how different salinities and temperatures impact early life stages M. pyrifera from different sources within Tomales Bay, (2) how the presence of invasive S. muticum propagules affect M. pyrifera gametophyte development, and (3) how the combined effects of salinity, temperature, and S. muticum presence affect M. pyrifera early life stages. Our results suggest that M. pyrifera may be able to adapt to local conditions like salinity; however, higher temperatures from a changing climate and the presence of competitors from biological invasions act additively, but not interactively, to negatively impact the early life stages of kelp. By determining how foundation species respond to various abiotic and biotic stressors, we can better predict how these species will perform in a changing environment and how they will contribute to overall ecosystem resilience.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"101 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatio-seasonal variations in functional trait composition and diversity patterns of marine fish communities in coastal waters 沿海水域海洋鱼类群落功能特征组成和多样性模式的时空变化

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-09-05 DOI: 10.3354/meps14671

Jiao Wang, Binduo Xu, Chongliang Zhang, Yupeng Ji, Ying Xue, Yiping Ren

{"title":"Spatio-seasonal variations in functional trait composition and diversity patterns of marine fish communities in coastal waters","authors":"Jiao Wang, Binduo Xu, Chongliang Zhang, Yupeng Ji, Ying Xue, Yiping Ren","doi":"10.3354/meps14671","DOIUrl":"https://doi.org/10.3354/meps14671","url":null,"abstract":"ABSTRACT: Despite the consensus that the distribution of functional traits within a community provides insights into community assembly and maintenance mechanisms, few studies have explored spatio-seasonal variations in the functional patterns of marine fish communities. Seven functional traits within the context of 2 distinct groups—habitat use and trophic niche—were selected to assess functional richness (FRic), functional evenness (FEve), and functional dispersion (FDis) across various spatio-seasonal scales. Community-weighted mean redundancy analysis (CWM-RDA) was used to identify the impact of environmental factors on dominant traits. We found seasonal and spatial variations in dominant traits of the fish community, notably influenced by the latitudinal-depth gradient (from shallower stations in the north to deeper stations in the south), east-west (longitudinal) dynamics, and temperature gradient. Latitude was negatively correlated with the CWM values of most functional trait categories. FRic showed more pronounced seasonal variations than other indices, with higher values observed in autumn. Fish assemblages displayed more similarity in functional traits in winter than in other seasons, with lower FRic, higher FEve, and lower FDis. Overall, our findings illustrate that fish assemblages undergo continuous formation and dissolution across different seasons and zones, resulting in various forms of functional diversity patterns.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"397 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0