Marine Ecology Progress Series最新文献_第6页

Growth of spring- and autumn-spawned larvae of Atlantic herring Clupea harengus: a long-term experiment mimicking seasonal light conditions 大西洋鲱鱼春季和秋季产卵幼体的生长：模拟季节性光照条件的长期实验

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-30 DOI: 10.3354/meps14521

Florian Berg, Gaute Seljestad, Arild Folkvord

{"title":"Growth of spring- and autumn-spawned larvae of Atlantic herring Clupea harengus: a long-term experiment mimicking seasonal light conditions","authors":"Florian Berg, Gaute Seljestad, Arild Folkvord","doi":"10.3354/meps14521","DOIUrl":"https://doi.org/10.3354/meps14521","url":null,"abstract":"ABSTRACT: Atlantic herring Clupea harengus populations differ in their spawning time, and spring- and autumn-spawning populations are genetically distinct. Offspring of these populations encounter seasonal variations in productivity. We conducted a fertilization experiment using spring-spawning Atlantic herring. Offspring were reared for 3 yr with seasonal varying light cycles starting either in spring or autumn, using 2 fixed temperature levels and food provided in excess. Such long-term experiments from hatching to maturation in small pelagic fish are very rare. We hypothesized that longer daylengths early in life would provide an overall growth advantage resulting in larger size after 1 yr (same amount of light) compared to those experiencing prolonged daylight later in life due to higher size-dependent growth rates at smaller sizes. Larvae with initial spring conditions initially grew faster. However, contrary to our expectations, offspring with initial autumn conditions had caught up to similar size after 1 yr. Herring at higher temperatures grew faster, even when correcting for the amount of degree-days. After the first year, individuals hatched in spring showed higher growth at the higher temperature while herring hatched under autumn light conditions consistently had higher growth rates at lower temperatures. The somatic condition of herring followed the daylength, with best conditions during summer and poorest during winter. This was the first long-term experiment conducted on herring with varying light conditions from hatching to maturation. Our novel results indicate that herring display considerable growth plasticity, reflecting the wide range of environmental conditions and life histories sustaining herring populations.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"64 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868885","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

Small pelagic fish: new frontiers in ecological research 小型中上层鱼类：生态研究的新领域

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-30 DOI: 10.3354/meps14648

Myron A. Peck, Ignacio A. Catalán, Susana Garrido, Ryan R. Rykaczewski, Rebecca G. Asch, Jan R. McDowell, Elliott L. Hazen, Isaac C. Kaplan

{"title":"Small pelagic fish: new frontiers in ecological research","authors":"Myron A. Peck, Ignacio A. Catalán, Susana Garrido, Ryan R. Rykaczewski, Rebecca G. Asch, Jan R. McDowell, Elliott L. Hazen, Isaac C. Kaplan","doi":"10.3354/meps14648","DOIUrl":"https://doi.org/10.3354/meps14648","url":null,"abstract":"ABSTRACT: Populations of small pelagic fish (SPF), such as sardines, anchovies and herrings, support some of the largest marine fisheries globally and are critical for trophic transfer in large marine ecosystems and food security, particularly in low- to medium-income countries. Marked changes in population size, shifts in distribution on multiple time scales, and impacts on their populations from other pressures (e.g. overfishing, climate change) pose large challenges to sustainably manage these resources to avoid the serious socioeconomic and ecological impacts of population collapses. The ecology and management of SPF was discussed in an international symposium in Lisbon, Portugal, attracting participants from 38 countries and 6 continents. This Theme Section includes 18 research contributions examining SPF from 6 different ecological regions alongside 3 global analyses. These studies, including a wide range of topics from parasitology, behavior and trophodynamics to growth and spawning, provide important new knowledge that will improve science-based advice and tools needed for sustainable, ecosystem-based management of these resources. This symposium was an important milestone for a global working group and sowed the seeds for continued, globally coordinated research efforts on the role of SPF in complex socio-ecological systems.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"62 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868893","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

Molecular barcoding reveals patterns of egg predation in small pelagic fish 分子条形码揭示了小型中上层鱼类捕食鱼卵的模式

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-30 DOI: 10.3354/meps14498

Ana Veríssimo, Pedro Fonseca, Susana Garrido

{"title":"Molecular barcoding reveals patterns of egg predation in small pelagic fish","authors":"Ana Veríssimo, Pedro Fonseca, Susana Garrido","doi":"10.3354/meps14498","DOIUrl":"https://doi.org/10.3354/meps14498","url":null,"abstract":"ABSTRACT: Cannibalism and intraguild predation occur in a vast number of small pelagic fish (SPF) species. Egg and larval predation can have important consequences on mortality, and its accurate assessment is important to estimate the impact on recruitment strength and population dynamics of predators and prey. Such assessments are hampered by limitations in visual species identification of many fish eggs and larvae in the predators’ stomachs. European sardine Sardina pilchardus and Atlantic chub mackerel Scomber colias, the dominant species of the pelagic food web off the Canary Current Upwelling ecosystem, are major predators of fish eggs. Egg predation by these SPF species is particularly high on sardine and anchovy eggs, but many preyed fish eggs are not amenable to visual identification. This study provides a proof-of-concept application of molecular identification of diverse fish eggs from SPF stomach contents not suitable for visual identification, as a way to improve our understanding of the impact of intraguild predation on fish population dynamics. Results show a high diversity of fish species in the eggs ingested by sardines and chub mackerel (18 and 15 families, respectively), mostly comprising locally abundant coastal taxa. Sardine ingested predominantly anchovy, sardine and sparid eggs, while chub mackerel ingested predominantly sparid eggs, followed by serranid (Serranus spp.) and sardine eggs. Sardines also showed higher variability in prey composition compared to chub mackerel. Exploratory analyses also suggested variability in prey composition with sampling area, season and maturity stage for sardine and chub mackerel, highlighting the need for dedicated follow-up studies.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"11 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868730","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

Effects of food supply on northern bay scallops Argopecten irradians reared under two pCO2 conditions 食物供应对两种 pCO2 条件下饲养的北部湾扇贝 Argopecten irradians 的影响

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-25 DOI: 10.3354/meps14624

Samuel J. Gurr, Katherine McFarland, Genevieve Bernatchez, Mark S. Dixon, Lisa Guy, Lisa M. Milke, Matthew E. Poach, Deborah Hart, Louis V. Plough, Dylan H. Redman, George Sennefelder, Sheila Stiles, Gary H. Wikfors, Dianna K. Padilla, Shannon L. Meseck

{"title":"Effects of food supply on northern bay scallops Argopecten irradians reared under two pCO2 conditions","authors":"Samuel J. Gurr, Katherine McFarland, Genevieve Bernatchez, Mark S. Dixon, Lisa Guy, Lisa M. Milke, Matthew E. Poach, Deborah Hart, Louis V. Plough, Dylan H. Redman, George Sennefelder, Sheila Stiles, Gary H. Wikfors, Dianna K. Padilla, Shannon L. Meseck","doi":"10.3354/meps14624","DOIUrl":"https://doi.org/10.3354/meps14624","url":null,"abstract":"ABSTRACT: For calcifying organisms such as bivalves, short-term exposure to increased ocean acidification (OA; elevated pCO2) may reduce growth rate, increase mortality, and disrupt shell formation. A growing body of research suggests that clearance rates and what particles bivalves select may change under high pCO2 exposure; however, these experiments are acute, ranging from days to weeks. The effects of food supply on bivalves under long-term OA exposure remain incompletely understood. In this study, juvenile northern bay scallops Argopecten irradians (Lamarck) that had been reared since 4 h post-fertilization under one of 2 OA conditions (∼500-600 or ∼750-850 µatm pCO2; ∼1.37-1.5 or ∼1.0-1.2 Ωaragonite), were subjected to 2 food levels for 42 d (low food: ∼400, high food: ∼1400 chlorophyll cells ml-1). Standard metabolic rate (SMR) and clearance rate (CR) were measured on Day 0, and SMR, CR, growth, and survivorship were measured at 14 and 42 days of exposure to 2 food levels for each of the OA treatments. Juveniles under food scarcity had reduced survivorship and growth independent of OA treatment. We found no effect of OA treatment or an OA × food interaction for these metrics. There was only a food-level effect for SMR and no OA treatment effect; however, there was an interaction between food and OA for CR. Under elevated pCO2 concentrations, scallops cleared Chaetoceros neogracile (strain Chaet-B) over Tetraselmis chui (strain PLY429) and natural seston. Altogether, these data suggest that tolerance to OA mediated by food may depend on food quality or other characteristics that influence particle selection under short-term experimental challenges.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"61 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785044","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

Assessing the population consequences of disturbance and climate change for the Pacific walrus 评估干扰和气候变化对太平洋海象种群的影响

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-25 DOI: 10.3354/meps14635

Devin L. Johnson, Joseph M. Eisaguirre, Rebecca L. Taylor, Joel L. Garlich-Miller

{"title":"Assessing the population consequences of disturbance and climate change for the Pacific walrus","authors":"Devin L. Johnson, Joseph M. Eisaguirre, Rebecca L. Taylor, Joel L. Garlich-Miller","doi":"10.3354/meps14635","DOIUrl":"https://doi.org/10.3354/meps14635","url":null,"abstract":"ABSTRACT: Climate change and anthropogenic disturbance are increasingly affecting wildlife at a global scale. Predicting how varying types and degrees of disturbance may interact to influence population dynamics is a key management challenge. Population consequences of disturbance (PCoD) models provide a framework to link effects of anthropogenic disturbance on an individual’s behavior and physiology to population-level changes. In the present study, we develop a Pacific walrus (Odobenus rosmarus divergens) PCoD model to encompass the population-level effects of both anthropogenic disturbance and climate change. As the Arctic becomes increasingly ice-free, walruses spend more time at coastal (vs. ice-based) haulouts, from which they must expend more energy to reach foraging areas and where they have an elevated risk of mortality. Concurrently, sea ice loss is increasing the anthropogenic footprint in the Arctic (e.g. fisheries, shipping, energy exploration), which creates additional disturbance. We applied the PCoD model to 4 scenarios (ranging from optimistic to pessimistic) which incorporate different global sea ice model projections along with varying degrees of anthropogenic disturbance. All scenarios indicated a decline in Pacific walrus vital rates by the end of the 21st century, but our results demonstrated that the intensity of that decline could be mitigated by global efforts to reduce carbon emissions, along with local management and conservation efforts to protect important coastal haulouts and foraging grounds. In summary, we introduce a flexible PCoD modeling framework in a novel context which will prove useful to researchers studying species threatened by rapid environmental change.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"43 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785002","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

Unraveling dispersal of a coastal fish species in the juvenile life stage in the Yellow Sea using otolith chemistry 利用耳石化学揭示黄海沿海鱼类幼鱼阶段的扩散过程

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-25 DOI: 10.3354/meps14637

Yi Zhang, Min Xu, Zunlei Liu, Yan Jin, Shengfa Li

{"title":"Unraveling dispersal of a coastal fish species in the juvenile life stage in the Yellow Sea using otolith chemistry","authors":"Yi Zhang, Min Xu, Zunlei Liu, Yan Jin, Shengfa Li","doi":"10.3354/meps14637","DOIUrl":"https://doi.org/10.3354/meps14637","url":null,"abstract":"ABSTRACT: Dispersal is a critical process in marine ecology, with profound implications for population conservation and fisheries management. Previous research has predominantly focused on reef-associated species, but studying the dispersal of more mobile fish species in nearshore environments is exceptionally challenging due to the complex coastal hydrography similar to reefs, and therefore dispersal knowledge of some coastal migratory behavior fish remains preliminary. In this study, we investigated the dispersal of a coastal fish species (small yellow croaker Larimichthys polyactis) in its juvenile life stage using otolith elemental fingerprints. We aimed to investigate the dispersal patterns of juveniles with otolith chemistry and identify potential natal sources. Results indicated that (1) significant geographical variations in the otolith elemental signatures can be considered as natural markers for assessing fish dispersal; (2) although small yellow croakers in the juvenile life stage are capable of settlement, a significant proportion of individuals continue subsequent passive dispersal; (3) juveniles may have originated from 2 natal sources in the sampling areas based on the differences in the near-core chemistry fingerprints. Results demonstrate the applicability of otolith chemistry fingerprints as natural tags in coastal waters and suggest that juveniles with the ability to settle will still employ dispersal strategies. This study contributes to research on fish dispersal in the early life stage and has significant implications for the marine fishery management of small yellow croaker.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"47 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785034","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

Seascape genetic study on Laminaria digitata underscores the critical role of sampling schemes 关于数字层叠叶藻的海景遗传研究强调了取样计划的关键作用

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-25 DOI: 10.3354/meps14640

L. Fouqueau, L. Reynes, F. Tempera, T. Bajjouk, A. Blanfuné, C. Chevalier, M. Laurans, S. Mauger, M. Sourisseau, J. Assis, L. Lévêque, M. Valero

{"title":"Seascape genetic study on Laminaria digitata underscores the critical role of sampling schemes","authors":"L. Fouqueau, L. Reynes, F. Tempera, T. Bajjouk, A. Blanfuné, C. Chevalier, M. Laurans, S. Mauger, M. Sourisseau, J. Assis, L. Lévêque, M. Valero","doi":"10.3354/meps14640","DOIUrl":"https://doi.org/10.3354/meps14640","url":null,"abstract":"ABSTRACT: Understanding connectivity patterns exhibited by endangered species living in fragmented habitats is fundamental to improving management and conservation actions. Such improvements can be particularly pressing at the trailing edges of these habitats, where populations are facing the greatest challenges from climate change, and appear even more crucial if the species is commercially harvested. Seascape genetics have been increasingly used to meet these needs. In this study, we examined connectivity patterns among 32 populations of the oarweed kelp Laminaria digitata located at the species’ southern range limit. The distance (or sampling gap) between neighboring populations ranged from a few km to a few 100s of km. By genotyping 11 microsatellite markers, we aimed to (1) refine analyses of population structure; (2) test whether on-shelf islands are genetically more differentiated than mainland populations; (3) evaluate the relative importance of various abiotic conditions in shaping the genetic structure; and (4) evaluate if the relative importance of each environmental factor varied according to sampling schemes. Our analyses revealed a positive relationship between connectivity links and genetic diversity: populations with high levels of connectivity were genetically enriched while isolated populations showed signs of genetic erosion. The genetically impoverished populations corresponded to the southernmost populations as well as populations along the northern coast of Brittany (Locquirec, Saint-Malo Bay) and the northernmost population in Pas-de-Calais. By performing distance-based redundancy analysis on various sampling schemes, geographic distance appeared as the dominant factor influencing connectivity between populations separated by great distances, while hydrodynamic processes were the main factor when analyzing at a final spatial resolution.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"43 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141786028","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

Passive citizen science: social media as a tool for marine wildlife observation 被动式公民科学：将社交媒体作为海洋野生动物观测工具

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-25 DOI: 10.3354/meps14629

L. Silva Nascimento, M. Nogueira Júnior, C. Satie Hara, M. Almeida Noernberg

{"title":"Passive citizen science: social media as a tool for marine wildlife observation","authors":"L. Silva Nascimento, M. Nogueira Júnior, C. Satie Hara, M. Almeida Noernberg","doi":"10.3354/meps14629","DOIUrl":"https://doi.org/10.3354/meps14629","url":null,"abstract":"ABSTRACT: It is not new that species occurrence records provided by citizens are valuable contributions to marine research. However, passive citizen science is a recent and promising methodology of crowdsourcing. Here, we review existing studies that used spontaneous posts shared by users on social media to obtain marine wildlife scientific data. We also present a critical analysis of passive citizen science using social media. Specifically, we (1) introduce marine citizen science and (2) analyze the advantages of passive citizen science compared with voluntary approaches. We also (3) present investigations that extracted information and produced knowledge for marine ecology and conservation through passive citizen science, (4) discuss best practices and opportunities, and (5) identify challenges of this approach. Although social media data may have inherent biases and diverse ethical issues, the data volume is generally large, and the benefits of obtaining observations at a low cost and in real time compensate for some shortcomings, which can sometimes be mitigated. Considering that the use of passive citizen science will continue to grow and be part of our daily lives, we expect the current review to be useful for future investigations.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"63 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785001","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

Living under Arctic kelp forests: linking soft-bottom communities to kelp cover in the Canadian Arctic 生活在北极海藻林下：将加拿大北极地区的软底生物群落与海藻覆盖联系起来

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-25 DOI: 10.3354/meps14628

Camille Lavoie, Kimberly L. Howland, Karen Filbee-Dexter, Philippe Massicotte, Jésica Goldsmit, Christopher W. McKindsey, Philippe Archambault

{"title":"Living under Arctic kelp forests: linking soft-bottom communities to kelp cover in the Canadian Arctic","authors":"Camille Lavoie, Kimberly L. Howland, Karen Filbee-Dexter, Philippe Massicotte, Jésica Goldsmit, Christopher W. McKindsey, Philippe Archambault","doi":"10.3354/meps14628","DOIUrl":"https://doi.org/10.3354/meps14628","url":null,"abstract":"ABSTRACT: Kelp forests are dominant habitats along Canadian Arctic coastlines. While their extent and productivity are expected to change dramatically due to global warming, their role in supporting Arctic coastal biodiversity remains poorly explored. Leveraging an extensive data set encompassing core samples, video transects, and environmental data, this study explores the patterns and drivers of benthic diversity, particularly focusing on kelp cover, across 4 Eastern Canadian Arctic regions. We show that the widespread soft bottoms in many subtidal coastal Arctic areas are associated with high densities of the kelp Saccharina latissima, often growing in mixed stands with Laminaria solidungula and Alaria esculenta. These kelps enhance the diversity of invertebrate communities thriving in the sediment below, increasing densities in specific groups and promoting subsurface feeding activity. Interregional comparisons indicate that high turbidity conditions typically lead to low macroalgal cover and low invertebrate richness, whereas extensive sea ice cover can favor high macroalgal abundance and unique diverse communities. Conditions of intermediate open-water duration and high water clarity support tall kelp forests, hosting approximately 70% of local rare taxa. Based on these surveys, we provide a list of Arctic invertebrate taxa according to their level of selectivity for kelp forests as habitats. Despite variation among regions, kelp forests enhance biodiversity and drive unique benthic communities in the Canadian Arctic. Due to their ecological significance and potential vulnerability, we recommend efforts to integrate kelp forests into marine protected areas and minimize human-induced damaging activities within or near these habitats.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785035","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

Vertical distribution of Pacific oyster Crassostrea gigas larvae and modeling larval transport in Hiroshima Bay, Japan 日本广岛湾太平洋牡蛎（Crassostrea gigas）幼体的垂直分布和幼体迁移模型的建立

IF 2.5 3区环境科学与生态学

Marine Ecology Progress Series Pub Date : 2024-07-25 DOI: 10.3354/meps14636

Goh Onitsuka, Katsuyuki Abo, Tadashi Matsubara, Ken-ichiro Mizuno, Shun-ichiro Ikeda, Takafumi Sato, Tomoyuki Shikata, Toshimitsu Onduka, Masami Hamaguchi

{"title":"Vertical distribution of Pacific oyster Crassostrea gigas larvae and modeling larval transport in Hiroshima Bay, Japan","authors":"Goh Onitsuka, Katsuyuki Abo, Tadashi Matsubara, Ken-ichiro Mizuno, Shun-ichiro Ikeda, Takafumi Sato, Tomoyuki Shikata, Toshimitsu Onduka, Masami Hamaguchi","doi":"10.3354/meps14636","DOIUrl":"https://doi.org/10.3354/meps14636","url":null,"abstract":"ABSTRACT: Understanding vertical distribution of planktonic larvae is essential for elucidating larval dispersal and recruitment processes. We investigated the vertical distribution and horizontal transport of Pacific oyster Crassostrea gigas larvae by field observations and numerical simulations during their main spawning season in Hiroshima Bay, Japan. In field observations, despite horizontal differences and slight diurnal/semi-diurnal changes depending on larval sizes, most larvae were distributed in the upper 3 m layer. The relationship between C. gigas larvae and environmental conditions revealed that larval density increased with increasing temperature and chlorophyll a concentration, and the density peaked at salinity of approximately 20 for all larval sizes. The observed results suggest that the distribution characteristics of C. gigas larvae are suitable for survival in an estuarine area, where environmental conditions are potentially favorable but hydrodynamic conditions can drastically change over the short term due to variations in river discharge. To examine the effect of high river discharge on larval transport, numerical simulations were conducted using a particle-tracking model incorporating the vertical motion of C. gigas larvae. The simulation results reproduced the spatio-temporal dynamics of planktonic and settled larvae after the high river discharge. Although most particles simulating larvae outflowed from the main spawning area, an area of high particle density at the end of simulation corresponded with the offshore area for seedling collection. The present study suggests the role of vertical distribution of C. gigas larvae for recruitment, and the prospect of sustainability in oyster aquaculture with respect to seedling collection despite the frequent heavy rainfall associated with climate change.","PeriodicalId":18193,"journal":{"name":"Marine Ecology Progress Series","volume":"56 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785037","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