Journal of Plankton Research最新文献

筛选
英文 中文
Comparison of WP-2 and MOCNESS plankton samplers for measuring zooplankton biomass in the Barents Sea ecosystem. 测量巴伦支海生态系统浮游动物生物量的WP-2和moness浮游生物采样器的比较。
IF 1.9 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-11-28 eCollection Date: 2024-11-01 DOI: 10.1093/plankt/fbae065
Hein Rune Skjoldal, Johanna Myrseth Aarflot, Tor Knutsen, Peter H Wiebe
{"title":"Comparison of WP-2 and MOCNESS plankton samplers for measuring zooplankton biomass in the Barents Sea ecosystem.","authors":"Hein Rune Skjoldal, Johanna Myrseth Aarflot, Tor Knutsen, Peter H Wiebe","doi":"10.1093/plankt/fbae065","DOIUrl":"10.1093/plankt/fbae065","url":null,"abstract":"<p><p>Zooplankton in the Barents Sea has been monitored on an annual autumn survey since the late 1980s, using vertical WP-2 and oblique Multiple Opening and Closing Net and Environmental Sensing System (MOCNESS) tows over the water column. Sampling with MOCNESS is used to describe the vertical distribution and more frequent sampling with WP-2 (~3:1) to describe the horizontal distribution. We use here a large cumulative data set of 874 MOCNESS and 2850 WP-2 stations with data on size-fractioned dry-weight biomass to compare the two zooplankton sampling gears. MOCNESS is consistently collecting more biomass of the large size fraction (>2 mm screen size) by ~20% and less of the small fraction (<1 mm) by ~30% compared to WP-2. This is interpreted to reflect more extrusion of small plankton and less avoidance by larger plankton with the MOCNESS. The data set has been collected by three research vessels. There was a difference in vertical speed in oblique tows of MOCNESS among the ships but no clear effect on volume filtered per unit time. This demonstrates operational consistency and suggests the use of a constant flow factor (distance per flowmeter count) when calculating results over the time series. The issue of calibration of traditional flowmeters on oblique tows needs further examination.</p>","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 6","pages":"654-672"},"PeriodicalIF":1.9,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11629780/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813412","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
Correction to: Phytoplankton stoichiometry along the salinity gradient under limited nutrient and light supply. 修正:在有限的营养和光照供应下,浮游植物沿着盐度梯度的化学计量。
IF 1.9 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-11-03 eCollection Date: 2024-11-01 DOI: 10.1093/plankt/fbae055
{"title":"Correction to: Phytoplankton stoichiometry along the salinity gradient under limited nutrient and light supply.","authors":"","doi":"10.1093/plankt/fbae055","DOIUrl":"https://doi.org/10.1093/plankt/fbae055","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1093/plankt/fbae031.].</p>","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 6","pages":"673"},"PeriodicalIF":1.9,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11629779/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813420","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
Know your limits; miniCOI metabarcoding fails with key marine zooplankton taxa. 了解自己的极限;miniCOI元条形码在关键的海洋浮游动物分类中失败。
IF 1.9 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-11-02 eCollection Date: 2024-11-01 DOI: 10.1093/plankt/fbae057
Aitor Albaina, Rade Garić, Lidia Yebra
{"title":"Know your limits; miniCOI metabarcoding fails with key marine zooplankton taxa.","authors":"Aitor Albaina, Rade Garić, Lidia Yebra","doi":"10.1093/plankt/fbae057","DOIUrl":"10.1093/plankt/fbae057","url":null,"abstract":"<p><p>Eleven years after the publication of the first work applying deoxyribonucleic acid (DNA) metabarcoding to zooplankton communities, the commonly known \"miniCOI\" barcode is widely used, becoming the marker of choice. However, several primer combinations co-exist for this barcode and a critical evaluation of their performance is needed. This article reviews the misperformance of miniCOI metabarcoding with marine zooplankton communities, comparing them to microscopy and/or other universal markers. In total, misperformances were reported for 26 zooplankton taxa, including 18 copepods and five tunicates. We report a detection failure with Class Appendicularia and contrasting performances for <i>Oithona similis</i> (from good correspondence to detection failure), two worldwide abundant taxa with a crucial role in the marine pelagic realm. A combination of forward primer mismatches, the presence of long poly-T inserts and a low number of reference sequences would explain the failure to detect appendicularians. However, the contrasting performance with <i>O. similis</i> would correspond to distinct numbers of mismatches in the forward primer in different lineages within this cryptic taxon. This is reinforced by the report of similar patterns with other locally abundant zooplankton taxa. Therefore, we strongly call for the use of miniCOI in combination with alternative methods capable of addressing these limitations.</p>","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 6","pages":"581-595"},"PeriodicalIF":1.9,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11629781/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813438","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
Environmental selection and advective transport shape the distribution of two cyst-forming Acantharia clades in the Canadian Arctic. 环境选择和平流运输塑造了加拿大北极地区两个囊状棘枝的分布。
IF 1.9 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-10-04 eCollection Date: 2024-11-01 DOI: 10.1093/plankt/fbae051
Mary Thaler, Aurélie Labarre, Connie Lovejoy
{"title":"Environmental selection and advective transport shape the distribution of two cyst-forming Acantharia clades in the Canadian Arctic.","authors":"Mary Thaler, Aurélie Labarre, Connie Lovejoy","doi":"10.1093/plankt/fbae051","DOIUrl":"10.1093/plankt/fbae051","url":null,"abstract":"<p><p>Anthropogenic induced climate perturbations are seen in changes in oceanic circulation patterns, and Arctic water masses defined by salinity are vulnerable to change. Biogeography of marine microbial eukaryotes is expected to be impacted by changes in local environmental conditions and advective processes, but tracking the extent of plankton distribution requires understanding routes for both active and passive tracers. To identify such tracers, we focused on samples collected in the western (Canada Basin) and eastern (Nares Strait); extremes of the Canadian High Arctic that are connected by an east flowing current north of Canada. Sequencing of the V4 region of 18S rRNA revealed that Acantharia, a taxonomically and functionally diverse group of large planktonic protists, were particularly common. Arctic acantharians in our study were dominated by two clades belonging to cyst-forming groups. The distribution of one clade suggested successful advective transport from the Pacific sourced water in the Beaufort Gyre to southern Nares Strait, with cells transported along the northern shelf of the Canadian Arctic. A second clade appeared to be a resident taxon of the Canada Basin whose distribution correlated to local environmental conditions, and detection in deeper samples would be consistent with swarmer formation enabling reestablishment the following year.</p>","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 6","pages":"542-554"},"PeriodicalIF":1.9,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11629782/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813426","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
Identification of phytoplankton isolates from the eastern Canadian waters using long-read sequencing. 加拿大东部水域浮游植物分离物的长读测序鉴定。
IF 1.9 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-10-03 eCollection Date: 2024-11-01 DOI: 10.1093/plankt/fbae043
Solenn Mordret, Jenna MacKinnon, Joerg Behnke, Stephen J B O'Leary, Caroline Chénard
{"title":"Identification of phytoplankton isolates from the eastern Canadian waters using long-read sequencing.","authors":"Solenn Mordret, Jenna MacKinnon, Joerg Behnke, Stephen J B O'Leary, Caroline Chénard","doi":"10.1093/plankt/fbae043","DOIUrl":"10.1093/plankt/fbae043","url":null,"abstract":"<p><p>As important primary producers and key components of biogeochemical processes, phytoplankton communities are highly diverse and continually adapt to changes in the environment, impacting the entire marine ecosystem. Consequently, it remains important to isolate, culture and properly describe new phytoplankton strains to provide relevant model organisms for laboratory research and accurate reference sequences for identification. Here, 73 phytoplankton strains from the eastern Canadian waters were isolated and genetically characterized using a long rRNA fragment (~4000 bp) covering the 18S, ITS and 28S rRNA regions generated with long-read sequencing technology. While most strains (66%) were accurately identified using the partial 18S rRNA gene (~1200 bp-V4-V9), this study broadens the current 28S rRNA reference database by incorporating 41 distinct strains including 30 unique species. In addition, previously unpublished long-read reference sequences were generated for a few genera, including <i>Picochlorum and Droopiella.</i> Species that were previously poorly described in the eastern Canadian waters were also genetically characterized, including a <i>Chaetoceros similis</i> strain. Overall, this work expands the total number of long-read references, an essential resource for accurate identification of phytoplankton and environmental sequences, thereby advancing the taxonomic resolution that could lead to a better understanding of environmental microbial diversity.</p>","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 6","pages":"527-541"},"PeriodicalIF":1.9,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11629783/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142813429","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
Combining in situ and ex situ plankton image data to reconstruct zooplankton (>1 mm) volume and mass distribution in the global ocean 结合原位和非原位浮游生物图像数据重建全球海洋浮游动物(>1 毫米)的体积和质量分布
IF 2.1 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-09-18 DOI: 10.1093/plankt/fbae046
Yawouvi Dodji Soviadan, Mathilde Dugenne, Laetitia Drago, Tristan Biard, Emilia Trudnowska, Fabien Lombard, Jean-Baptiste Romagnan, Jean-Louis Jamet, Rainer Kiko, Gabriel Gorsky, Lars Stemmann
{"title":"Combining in situ and ex situ plankton image data to reconstruct zooplankton (>1 mm) volume and mass distribution in the global ocean","authors":"Yawouvi Dodji Soviadan, Mathilde Dugenne, Laetitia Drago, Tristan Biard, Emilia Trudnowska, Fabien Lombard, Jean-Baptiste Romagnan, Jean-Louis Jamet, Rainer Kiko, Gabriel Gorsky, Lars Stemmann","doi":"10.1093/plankt/fbae046","DOIUrl":"https://doi.org/10.1093/plankt/fbae046","url":null,"abstract":"Plankton size spectra are important indicators of the ecosystem state, yet such measurements are typically biased by the available sampling methods. Here, we combined individual size measurement from two zooplankton imaging approaches—in situ observation by the Underwater Vision Profiler5 and Multinet-collection supplemented by ex situ imaging via Zooscan—obtained in the global ocean, to calculate zooplankton normalized biovolume size spectra (NBSS) for all organisms larger than 1 mm. The reconstructed NBSS combining both datasets resulted in increased biomass estimates by adding organisms poorly sampled by either of the methods. The optimal values measured by both methods are used to reconstruct the zooplankton biovolume and biomass distributions. The reconstructed slopes appeared steeper and closer to those measured only by the UVP5 (+7.6%) and flatter than those obtained only from the Multinet (−20%), particularly in tropical and temperate latitudes. The main difference in tropical and temperate NBSS from the two devices is due to the fragile rhizarians that were not accounted for when using net data. When possible, we suggest using in situ and ex situ technologies together, and we provide potential indications on how to correct for missing components of the community when only one method is available.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"51 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142249653","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
Direct and indirect effects of copepod grazers on community structure. 桡足类食草动物对群落结构的直接和间接影响。
IF 1.9 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-09-16 eCollection Date: 2024-09-01 DOI: 10.1093/plankt/fbae047
Kristie Rigby, Elisa Berdalet, Carina Berglund, Fabian Roger, Michael Steinke, Mahasweta Saha, Wiebke Grebner, Emily Brown, Uwe John, Lars Gamfeldt, Patrick Fink, Fredrick Berggren, Erik Selander
{"title":"Direct and indirect effects of copepod grazers on community structure.","authors":"Kristie Rigby, Elisa Berdalet, Carina Berglund, Fabian Roger, Michael Steinke, Mahasweta Saha, Wiebke Grebner, Emily Brown, Uwe John, Lars Gamfeldt, Patrick Fink, Fredrick Berggren, Erik Selander","doi":"10.1093/plankt/fbae047","DOIUrl":"10.1093/plankt/fbae047","url":null,"abstract":"<p><p>Ecological theory and empirical research show that both direct lethal effects and indirect non-lethal effects can structure the composition of communities. While the direct effects of grazers on marine phytoplankton communities are well studied, their indirect effects are still poorly understood. Direct and indirect effects are inherently difficult to disentangle in plankton food webs. In this study we evaluate the indirect effects of copepod grazers on community function and structure using isolated chemical alarm signals, copepodamides. We expose intact summer and spring communities to direct grazing from copepods, or to chemical alarm cues without the presence of grazers in controlled experiments. The effects of direct grazing on ecosystem function were moderate in both experiments as indicated by levels of chlorophyll and primary production. Indirect and direct effects resulted in changes in the composition of both the eukaryote and prokaryote communities as shown by metabarcoding of 18S and 16S rRNA. Size structure analysis suggests that direct grazing and copepodamide exposure both favoured smaller organisms (< 10-15 μm) corroborating the size-structuring effect of copepod grazers. We conclude that the well-established effect of copepods on phytoplankton communities results from a combination of direct and indirect effects. This is a first attempt to isolate indirect effects of copepods on community structure and the results suggest that a full mechanistic understanding of the structuring effect of copepods will require insights to both direct and indirect effects of consumers as demonstrated for other ecosystems components.</p>","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"46 5","pages":"515-524"},"PeriodicalIF":1.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11443962/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142365578","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
High prey capture efficiencies of oceanic epipelagic lobate and cestid ctenophores 大洋上层裂片栉水母和栉水母的高猎物捕获效率
IF 2.1 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-09-14 DOI: 10.1093/plankt/fbae044
Taylor Child, John H Costello, Brad J Gemmell, Kelly R Sutherland, Sean P Colin
{"title":"High prey capture efficiencies of oceanic epipelagic lobate and cestid ctenophores","authors":"Taylor Child, John H Costello, Brad J Gemmell, Kelly R Sutherland, Sean P Colin","doi":"10.1093/plankt/fbae044","DOIUrl":"https://doi.org/10.1093/plankt/fbae044","url":null,"abstract":"Ctenophores are numerically dominant members of oceanic epipelagic communities around the world. The ctenophore community is often comprised of several common, co-occurring lobate and cestid genera. Previous quantifications of the amount of fluid that lobate ctenophores entrain in their feeding currents revealed that oceanic lobates have the potential for high feeding rates. In order to more directly examine the trophic role of oceanic lobate ctenophores, we quantified the encounter and retention efficiencies of several co-occurring species (Bolinopsis vitrea, Ocyropsis crystallina, Eurhamphea vexilligera and Cestum veneris) in their natural environments. Encounters and predator–prey interactions were video recorded in the field using specialized cameras and SCUBA techniques. The lobate species encountered, on average, 2.4 prey per minute and ingested 40% of these prey. This translated to an estimated ingestion rate of close to 1 prey per minute. Cestum veneris and most of the lobate species retained prey as efficiently as the voracious coastal lobate predator Mnemiopsis leidyi, suggesting that these oceanic species have a similar predation impact in their environments as M. leidyi does in coastal ecosystems. Hence, quantified in situ predatory-prey interactions indicate that epipelagic ctenophores have a significant impact on oceanic ecosystems worldwide.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"4 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142249651","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
Dietary plasticity in small Arctic copepods as revealed with prey metabarcoding 用猎物代谢编码揭示北极小型桡足类的膳食可塑性
IF 2.1 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-09-05 DOI: 10.1093/plankt/fbae042
Snorre Flo, Camilla Svensen, Kim Præbel, Bodil Annikki Bluhm, Anna Vader
{"title":"Dietary plasticity in small Arctic copepods as revealed with prey metabarcoding","authors":"Snorre Flo, Camilla Svensen, Kim Præbel, Bodil Annikki Bluhm, Anna Vader","doi":"10.1093/plankt/fbae042","DOIUrl":"https://doi.org/10.1093/plankt/fbae042","url":null,"abstract":"Objectives Small copepods (&amp;lt;2 mm) compose an important constituent of the Arctic marine food web, but their trophic interactions remain largely unexplored, partly due to methodological limitations. Methods We here characterize the prey of the abundant cyclopoid Oithona similis, harpacticoid Microsetella norvegica and calanoid Microcalanus spp. from the Arctic Barents Sea and Nansen Basin during four seasons using brute force prey metabarcoding of the 18S rRNA gene. Key findings Chaetognaths were unexpectedly the most consistently identified taxa and composed 47% of all prey reads. Some taxa were seasonally important, including diatoms in April–May (43%), dinoflagellates in December (15%) and March (17%), and urochordates in August (20%). Compositional differences among species were also discernible, and the M. norvegica diet was significantly different from both O. similis and Microcalanus spp. The diets varied nevertheless more with season than species despite the inherent trophic traits that distinguish the ambush-predator O. similis, chemosensoric particle-chaser M. norvegica and current-feeding Microcalanus spp. Conclusions Our results thus indicate that dietary plasticity is common in small Arctic copepods, regardless of their behaviors or strategies for finding sustenance. We further hypothesize that such plasticity is an important adaptation in systems where prey availability is highly seasonal.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"13 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142212470","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
Spring resting egg production of the calanoid copepod, Eurytemora affinis, in a freshet-dominated estuary 淡水河口桡足类(Eurytemora affinis)春季休眠产卵情况
IF 2.1 3区 环境科学与生态学
Journal of Plankton Research Pub Date : 2024-07-20 DOI: 10.1093/plankt/fbae039
Joanne Breckenridge, Evgeny Pakhomov
{"title":"Spring resting egg production of the calanoid copepod, Eurytemora affinis, in a freshet-dominated estuary","authors":"Joanne Breckenridge, Evgeny Pakhomov","doi":"10.1093/plankt/fbae039","DOIUrl":"https://doi.org/10.1093/plankt/fbae039","url":null,"abstract":"Seasonal peaks in river discharge, such as snowmelt-dominated freshets, are predictable events that can have a large effect on flushing rates and salinity in estuaries. Resting eggs, which many coastal and estuarine copepods produce for overwintering or aestivation, could also serve to bridge predictable peaks in river discharge. We assessed the timing of resting egg production of the egg-carrying estuarine copepod, Eurytemora affinis (Poppe), in relation to river discharge in the Fraser River Estuary, Canada. Approximately 30 field-collected females were individually incubated on 12 occasions over the period February 2015–May 2016. Eurytemora affinis abundance and population structure were investigated from vertical net tow samples collected twice monthly to monthly. Resting eggs occurred primarily in May 2015 and May 2016 (6.5 and 9.2 eggs day−1, respectively), a month prior to peak flows, and the proportion of offspring that were resting eggs increased with river discharge. Eurytemora affinis reached a minimum abundance in July 2015, when the population was dominated by adults (86%). Resting egg production in E. affinis is typically considered an overwintering mechanism but we suggest that the ultimate driver of resting egg production in this population is avoidance of flushing and/or low salinities.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"92 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740688","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信