Journal of Plankton Research最新文献_第7页

Large-scale culturing of the subpolar foraminifera Globigerina bulloides reveals tolerance to a large range of environmental parameters associated to different life-strategies and an extended lifespan. 对亚极地有孔虫 Globigerina bulloides 的大规模培养揭示了其对与不同生命策略和延长寿命相关的大量环境参数的耐受性。

IF 1.9 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-06-07 eCollection Date: 2024-07-01 DOI: 10.1093/plankt/fbae029

Freya E Sykes, Julie Meilland, Adele Westgård, Thomas B Chalk, Melissa Chierici, Gavin L Foster, Mohamed M Ezat

{"title":"Large-scale culturing of the subpolar foraminifera Globigerina bulloides reveals tolerance to a large range of environmental parameters associated to different life-strategies and an extended lifespan.","authors":"Freya E Sykes, Julie Meilland, Adele Westgård, Thomas B Chalk, Melissa Chierici, Gavin L Foster, Mohamed M Ezat","doi":"10.1093/plankt/fbae029","DOIUrl":"10.1093/plankt/fbae029","url":null,"abstract":"The subtropical to subpolar planktic foraminifera Globigerina bulloides is a calcifying marine protist, and one of the dominant foraminiferal species of the Nordic Seas. Previously, the relative abundance and shell geochemistry of fossil G. bulloides have been studied for palaeoceanographic reconstructions. There is however a lack of biological observations on the species and a poor understanding of its ecological tolerances, especially for high latitude genotypes. Here, we present observations from the first extensive culturing of G. bulloides under subpolar conditions, including the first low temperature (6-13°C) and variable salinity (30-38) experiments. Carbonate chemistry (pH and [CO3 2-]) was also manipulated. Experimental conditions were chosen to reflect a range of plausible past and future scenarios for the Nordic Seas. We found G. bulloides to be tolerant of environmental conditions well outside their optimal range (<10°C, salinity <33, pH <8). Observed life span was up to three months, which was attributed to a microalgal diet. Two alternative life strategies were employed, whereby individuals either experienced rapid growth and death, or a prolonged lifespan with minimal growth and death via slow decay. We posit this could help explain differences in geochemical signals recorded from different size fractions of fossil specimens used for palaeoceanographic reconstructions.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 4","pages":"403-420"},"PeriodicalIF":1.9,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290258/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141875072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Living at depth: ecophysiological condition of Boreomysis arctica in autumn and winter in the St. Lawrence estuary and gulf. 深海生活：圣劳伦斯河口和海湾秋冬季节北极鲂的生态生理状况。

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-05-16 eCollection Date: 2024-05-01 DOI: 10.1093/plankt/fbae022

Gesche Winkler, Jory Cabrol, Réjean Tremblay

{"title":"Living at depth: ecophysiological condition of Boreomysis arctica in autumn and winter in the St. Lawrence estuary and gulf.","authors":"Gesche Winkler, Jory Cabrol, Réjean Tremblay","doi":"10.1093/plankt/fbae022","DOIUrl":"10.1093/plankt/fbae022","url":null,"abstract":"Mysids, besides krill, play a significant role in energy transfer and carbon sequestration. The ecology of coastal species is better understood than that of deep dwelling species such as Boreomysis arctica. The objectives of this study were to quantify spatiotemporal variations in body condition and the trophic level of B. arctica in autumn and winter, under sea-ice conditions in the St. Lawrence system, using a multimarker approach. We sampled along a 1000 km transect. Mean abundances in winter were higher in the estuary compared to the Gulf of St. Lawrence. Body condition, measured as total lipid content, was higher in winter than in autumn. Lipids of B. arctica were mainly composed of wax esters, thereby B. arctica is richer in energetic lipids compared to the three dominant krill species. We also observed seasonal differences in the trophic level of B. arctica, revealing carnivorous behavior in autumn compared to omnivory in winter. High intra-specific variability in both energetic strategy and feeding behavior was found that is potentially due to opportunistic feeding. Energy rich reserves suggest that B. arctica could act as a valuable prey for both benthic and pelagic consumers and thus playing a key role in bentho-pelagic energy transfer.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 3","pages":"348-356"},"PeriodicalIF":2.1,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11142453/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141200216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of swimming trajectories in Daphnia similis as an environmental impact assessment tool 作为环境影响评估工具的水蚤游泳轨迹分析

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-05-06 DOI: 10.1093/plankt/fbae015

Rubens M Lopes, Marcia Akari, Leandro T De La Cruz, Marco Uttieri

{"title":"Analysis of swimming trajectories in Daphnia similis as an environmental impact assessment tool","authors":"Rubens M Lopes, Marcia Akari, Leandro T De La Cruz, Marco Uttieri","doi":"10.1093/plankt/fbae015","DOIUrl":"https://doi.org/10.1093/plankt/fbae015","url":null,"abstract":"Toxicity tests with daphnids are important tools in the environmental impact assessment of aquatic ecosystems. The aim of this study was to characterize the swimming paths of Daphnia similis in response to two concentrations of the reference substance potassium chloride (KCl), as an additional expedite tool in evaluating the effects of contaminants. Bidimensional trajectory coordinates were obtained with image acquisition and processing methods and used to calculate the following metrics of D. similis behavior: mean swimming speed, hop rate, fractal dimension, and vertical occupancy. The swimming speed, hop rate and fractal dimension for the control group were significantly different from the KCl treatment at the higher concentration. Conversely, the vertical occupancy did not differ between the experimental conditions. The results of this investigation validate the use of behavioral analysis as a rapid and reliable approach to evaluate water contamination, aiding in early warning detection of water quality issues. The method can be further refined through the integration of machine learning applications in video tracking.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"15 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887315","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

Seasonal abundance, lipid storage, and energy density of Calanus finmarchicus and other copepod preyfields along the Northwest Atlantic continental shelf 西北大西洋大陆架上桡足类和其他捕食场的季节丰度、脂质储存和能量密度

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-05-04 DOI: 10.1093/plankt/fbae014

Rachel M Carlowicz Lee, Toniann D Keiling, Joseph D Warren

{"title":"Seasonal abundance, lipid storage, and energy density of Calanus finmarchicus and other copepod preyfields along the Northwest Atlantic continental shelf","authors":"Rachel M Carlowicz Lee, Toniann D Keiling, Joseph D Warren","doi":"10.1093/plankt/fbae014","DOIUrl":"https://doi.org/10.1093/plankt/fbae014","url":null,"abstract":"Calanus finmarchicus is an abundant calanoid copepod in the New York Bight (NYB) that has energy-dense lipid stores. This study measured C. finmarchicus abundance, lipid storage and energy density and compared it to two other abundant calanoid species in the region. We compared the NYB C. finmarchicus preyfield characteristics with data from two other NW Atlantic coastal ecosystems, the Gulf of Maine (GoM) and Cape Cod Bay (CCB). Copepods from net tows were identified, enumerated, photographed and measured. These data were used to calculate animal biovolume and lipid content as well as the volumetric energy density of the copepod preyfield. C. finmarchicus were most abundant in spring and summer and the mean lipid storage of C. finmarchicus remained largely constant regardless of season and location within the NYB. Centropages typicus were abundant enough in the winter to be more energy-rich than C. finmarchicus. Temora longicornis, while also abundant, never surpassed the energy density of C. finmarchicus. C. finmarchicus in the NYB were comparably lipid-rich to those from the GoM and CCB. C. finmarchicus in the NYB can be a reliable energy source for local predators due to their high spring and summer abundances and year-round storage of high-energy wax esters.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"2011 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140833016","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

Under ice plankton and lipid dynamics in a subarctic lake 一个亚北极湖泊的冰下浮游生物和脂质动力学

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-05-04 DOI: 10.1093/plankt/fbae018

Erwin Kers, Eva Leu, Per-Arne Amundsen, Raul Primicerio, Martin Kainz, Amanda E Poste

{"title":"Under ice plankton and lipid dynamics in a subarctic lake","authors":"Erwin Kers, Eva Leu, Per-Arne Amundsen, Raul Primicerio, Martin Kainz, Amanda E Poste","doi":"10.1093/plankt/fbae018","DOIUrl":"https://doi.org/10.1093/plankt/fbae018","url":null,"abstract":"Climate warming causes shorter winters and changes in ice and snow cover in subarctic lakes, highlighting the need to better understand under-ice ecosystem functioning. The plankton community in a subarctic, oligotrophic lake was studied throughout the ice-covered season, focusing on lipid dynamics and life history traits in two actively overwintering copepods, Cyclops scutifer and Eudiaptomus graciloides. Whereas C. scutifer was overwintering in C-IV to C-V stage, E. graciloides reproduced under ice cover. Both species had accumulated lipids prior to ice-on and showed a substantial decrease in total lipid content throughout the ice-covered period: E. graciloides (60%–38% dw) and C. scutifer (73%–33% dw). Polyunsaturated fatty acids of algal origin were highest in E. graciloides and declined strongly in both species. Stearidonic acid (18:4n-3) content in E. graciloides was particularly high and decreased rapidly during the study period by 50%, probably due to reproduction. The copepods differed in feeding behavior, with the omnivore C. scutifer continuing to accumulate lipids until January, whereas the herbivorous E. graciloides accumulated lipids from under-ice primary production during the last months of ice-cover. Our findings emphasize the importance of lipid accumulation and utilization for actively overwintering copepods irrespective of the timing of their reproduction.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"96 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140832999","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

Zooplankton seasonal vertical migration in an optimality-based plankton ecosystem model 基于优化的浮游生物生态系统模型中的浮游动物季节性垂直迁移

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-04-27 DOI: 10.1093/plankt/fbae016

Michal Grossowicz, Markus Pahlow

{"title":"Zooplankton seasonal vertical migration in an optimality-based plankton ecosystem model","authors":"Michal Grossowicz, Markus Pahlow","doi":"10.1093/plankt/fbae016","DOIUrl":"https://doi.org/10.1093/plankt/fbae016","url":null,"abstract":"Several species from various zooplankton taxa perform seasonal vertical migrations (SVM) of typically several hundred meters between the surface layer and overwintering depths, particularly in high-latitude regions. We use OPtimality-based PLAnkton (OPPLA) ecosystem model) to simulate SVM behavior in zooplankton in the Labrador Sea. Zooplankton in OPPLA is a generic functional group without life cycle, which facilitates analyzing SVM evolutionary stability and interactions between SVM and the plankton ecosystem. A sensitivity analysis of SVM-related parameters reveals that SVM can amplify the seasonal variations of phytoplankton and zooplankton and enhance the reduction of summer surface nutrient concentrations. SVM is often explained as a strategy to reduce exposure to visual predators during winter. We find that species doing SVM can persist and even dominate the summer-time zooplankton community, even in the presence of Stayers, which have the same traits as the migrators, but do not perform SVM. The advantage of SVM depends strongly on the timing of the seasonal migrations, particularly the day of ascent. The presence of higher (visual) predators tends to suppress the Stayers in our simulations, whereas the SVM strategy can persist in the presence of non-migrating species even without higher predators.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"77 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140810821","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

Improving the sampling of red Noctiluca scintillans to understand its impact on coastal ecosystem dynamics 改进红色褐藻的取样工作，了解其对沿岸生态系统动态的影响

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-04-11 DOI: 10.1093/plankt/fbae010

Katharina Kordubel, Burkard Baschek, Martin Hieronymi, Yoana G Voynova, Klas O Möller

{"title":"Improving the sampling of red Noctiluca scintillans to understand its impact on coastal ecosystem dynamics","authors":"Katharina Kordubel, Burkard Baschek, Martin Hieronymi, Yoana G Voynova, Klas O Möller","doi":"10.1093/plankt/fbae010","DOIUrl":"https://doi.org/10.1093/plankt/fbae010","url":null,"abstract":"Recently, natural and anthropogenic pressures caused an apparent increase in the frequency and spread of red Noctiluca scintillans (RNS) blooms. Here, we describe this potential expansion and the associated environmental factors based on an extensive literature review (1857–2023). Our analysis suggests that Noctiluca increased over time in several Australian, Chinese and European coastal regions. We point to eutrophication, ocean warming and deoxygenation as possible drivers of these intensifications. Moreover, we demonstrate Noctiluca’s importance for coastal ecosystems: with competitive advantages causing fast and intense blooms, Noctiluca has the potential to alter plankton communities, influencing productivity in affected areas. Throughout our analysis, we identified major knowledge gaps that are relevant to assess Noctiluca: (i) challenges in determining its spatiotemporal evolution; (ii) limited knowledge about drivers triggering and ending blooms; (iii) scarce information about feeding, reproduction and interaction in situ and (iv) uncertainty regarding its contribution to carbon export. We hypothesize that these gaps are related to limitations in traditional sampling techniques, and we highlight the need for a holistic approach combining traditional with novel techniques like remote sensing and underwater cameras. Our suggested approach could help filling the identified gaps and facilitate predictions of bloom dynamics and impacts under future climate conditions.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"30 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568899","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

Littoral phytoplankton and zooplankton communities in a tropical reservoir: Pantabangan Reservoir, the Philippines 热带水库沿岸浮游植物和浮游动物群落：菲律宾 Pantabangan 水库

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-03-24 DOI: 10.1093/plankt/fbae006

Bryan C Alpecho, Mariano R M Duya, Nikki Y B Mendoza, Francis S Magbanua

{"title":"Littoral phytoplankton and zooplankton communities in a tropical reservoir: Pantabangan Reservoir, the Philippines","authors":"Bryan C Alpecho, Mariano R M Duya, Nikki Y B Mendoza, Francis S Magbanua","doi":"10.1093/plankt/fbae006","DOIUrl":"https://doi.org/10.1093/plankt/fbae006","url":null,"abstract":"Littoral phytoplankton and zooplankton diversity are influenced by the water quality parameters and their trophic interactions. In the largest reservoir of the Philippines, this study examined the water quality and plankton community composition in the littoral zone across three sampling sites and four depths. Of the three sites, one is located near active fish cages, one near the mouth of a tributary and one near an outlet of an upstream dam. A total of 36 phytoplankton and 34 zooplankton taxa were identified, with most taxa belonging to Chlorophyta and Cyclopoida. The most abundant phytoplankton and zooplankton taxa were Aulacoseira and Microcyclops, respectively. The three most abundant phytoplankton (Aulacoseira, Oscillatoria, Volvox) were most positively correlated with the nutrient levels [total nitrogen (TN), total phosphorus (TP) and TN:TP ratio]. A significant interaction of sampling site and depth was recorded for the phytoplankton’s Shannon diversity index and community composition. The decreased zooplankton diversity amidst decreased phytoplankton diversity in the aquaculture site aligns with the effect of lowered resource heterogeneity on zooplankton. The increased phytoplankton diversity and decreased zooplankton density and taxon richness at shallower depths were probably linked with the light availability.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"72 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140314883","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

Seasonal organization of tintinnid community by temperature preference and LOD size-class in a subtropical brackish embayment 亚热带咸水河湾中按温度偏好和 LOD 大小等级划分的丁鲷群落的季节性组织结构

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-03-05 DOI: 10.1093/plankt/fbae005

Jingyuan Li, Ping Du, Haibo Li, Yuan Zhao, Ming Mao, Li Zhao, Yi Dong, Yepeng Xu, Gérald Grégori, Wuchang Zhang

{"title":"Seasonal organization of tintinnid community by temperature preference and LOD size-class in a subtropical brackish embayment","authors":"Jingyuan Li, Ping Du, Haibo Li, Yuan Zhao, Ming Mao, Li Zhao, Yi Dong, Yepeng Xu, Gérald Grégori, Wuchang Zhang","doi":"10.1093/plankt/fbae005","DOIUrl":"https://doi.org/10.1093/plankt/fbae005","url":null,"abstract":"Most annual studies of tintinnid and phytoplankton in coastal habitats are influenced by alien species introduced by water masses exchange, and therefore cannot be used as direct evidence for exploring the mechanism of annual succession in indigenous community. For brackish communities, very limited annual studies exist because of the difficulty of conducting stable sampling in the transition between freshwater and seawater. The special topography of Xiangshan Bay isolates the external water mass and provides a suitable habitat for exploring the annual succession mechanism of the brackish tintinnid community. In this study, samples were collected from seven stations in Tie Harbor, Xiangshan Bay (East China Sea) during 10 months from 2022 to 2023. A total of 23 tintinnid species of five genera were identified throughout the year. These tintinnid species can be clustered into four seasonal groups, winter, summer, autumn and spring-autumn, with three temperature preferences. The Lorica Oral Diameter (LOD) size-class of each tintinnid species, which determines the food item size of tintinnid, separated their different ecological niches within each seasonal group. The seasonal succession of tintinnid community in Xiangshan Bay was organized by both temperature preference and LOD size of the tintinnid species.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"20 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140044078","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

Evidence for adaptive strategies in larval capelin on the northeastern coast of Newfoundland, Canada 加拿大纽芬兰东北海岸毛鳞鱼幼鱼适应策略的证据

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2024-03-05 DOI: 10.1093/plankt/fbad052

Ashley Tripp, Hannah M Murphy, Gail K Davoren

{"title":"Evidence for adaptive strategies in larval capelin on the northeastern coast of Newfoundland, Canada","authors":"Ashley Tripp, Hannah M Murphy, Gail K Davoren","doi":"10.1093/plankt/fbad052","DOIUrl":"https://doi.org/10.1093/plankt/fbad052","url":null,"abstract":"Fish species with high mortality during early life may maximize fitness using adaptive strategies to time hatching to match favorable environmental conditions (match/mismatch) or extending spawning/hatching to disperse risk (bet-hedging). We examined support for these strategies in a collapsed forage fish, capelin (Mallotus villosus), in coastal Newfoundland (2018–2021). Capelin shift from spawning at warm, intertidal to cool, subtidal (15–40 m) habitats in warmer years, with unknown recruitment consequences. We hypothesized that match/mismatch (specifically, Coastal Water Mass Replacement Hypothesis) would be supported if densities of recently hatched larvae showed pulses that overlapped with high prey and low predator densities. Generalized additive models revealed that larval densities increased with zooplankton prey biomass, but were not influenced by predator biomass or temperature, contrasting with pre-collapse studies and providing equivocal support for match/mismatch. Protracted larval emergence and previously documented high variability in larval traits supported a bet-hedging strategy. Larval condition (i.e. length, yolk-sac diameter) did not differ between habitats but varied among years, where the highest proportion of larvae in poor condition was from the intertidal site in the warmest year (2018). Findings suggest that spawning habitat shifts may have limited impact on stock recovery relative to year-specific environmental conditions that influence larval condition.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"19 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140044023","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