Journal of Plankton Research最新文献_第10页

Beauty of the plankton: from the first issue of Haeckel’s Art Forms of Nature 浮游生物之美:选自海克尔《自然的艺术形式》第一期

3区环境科学与生态学

Journal of Plankton Research Pub Date : 2023-01-08 DOI: 10.1093/plankt/fbac076

John R Dolan

引用次数: 0

Mucilage protects the planktonic desmid Staurodesmus sp. against parasite attack by a chytrid fungus. 黏液保护浮游小蜗牛免受一种壶菌真菌的寄生。

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2023-01-01 DOI: 10.1093/plankt/fbac071

Silke Van Den Wyngaert, Martin J Kainz, Robert Ptacnik

{"title":"Mucilage protects the planktonic desmid Staurodesmus sp. against parasite attack by a chytrid fungus.","authors":"Silke Van Den Wyngaert, Martin J Kainz, Robert Ptacnik","doi":"10.1093/plankt/fbac071","DOIUrl":"https://doi.org/10.1093/plankt/fbac071","url":null,"abstract":"Zoosporic fungi of the phylum Chytridiomycota are ubiquitous parasites of phytoplankton in aquatic ecosystems, but little is known about phytoplankton defense strategies against parasitic chytrid attacks. Using a model chytrid-phytoplankton pathosystem, we experimentally tested the hypothesis that the mucilage envelope of a mucilage-forming desmid species provides protection against the parasitic chytrid Staurastromyces oculus. Mucilage-forming Staurodesmus cells were not accessible to the chytrid, whereas physical removal of the mucilage envelope rendered the same Staurodesmus sp. strain equally susceptible to chytrid infections as the original non-mucilage-forming host Staurastrum sp. Epidemic spread of the parasite only occurred in Staurastrum sp., whereas non-mucilage-bearing Staurodesmus sp. allowed for co-existence of host and parasite, and mucilage-bearing Staurodesmus sp. caused parasite extinction. In addition to the mucilage defense barrier, we also demonstrate the ability of both Staurastrum sp. and Staurodesmus sp. to resist infection by preventing chytrid development while still remaining viable and being able to reproduce and thus recover from an infection. This study extends our knowledge on phytoplankton defense traits and the functional role of mucilage in phytoplankton as a physical barrier against fungal parasites.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"45 1","pages":"3-14"},"PeriodicalIF":2.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9896892/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10676294","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: 1

Half-century trends in alpha and beta diversity of phytoplankton summer communities in the Helsinki Archipelago, the Baltic Sea. 波罗的海赫尔辛基群岛夏季浮游植物群落α和β多样性的半个世纪趋势。

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2023-01-01 DOI: 10.1093/plankt/fbac029

Kalle Olli, Emil Nyman, Timo Tamminen

{"title":"Half-century trends in alpha and beta diversity of phytoplankton summer communities in the Helsinki Archipelago, the Baltic Sea.","authors":"Kalle Olli, Emil Nyman, Timo Tamminen","doi":"10.1093/plankt/fbac029","DOIUrl":"https://doi.org/10.1093/plankt/fbac029","url":null,"abstract":"We analyzed phytoplankton biodiversity trends in a 52 year (1967-2018) monitoring time-series from the archipelago of Helsinki, Gulf of Finland, the Baltic Sea. The community ordination revealed strong ordering of samples along the time axis (generalized additive model-gam fit: R 2 = 0.9). Species richness increased in time and was the most influential alpha diversity descriptor related to the community structure (gam fit: R 2 = 0.56-0.70). Changes in species richness accounted for 35-36% of the mean between-sample beta diversity. The remaining 64-65% was due to species turnover-the dominant component of the biodiversity trend. The temporal beta diversity trend reflected the eutrophication history of the geographically confined region, with a turning point in mid-1990s demarking the adaptation and recovery phases of the phytoplankton community. Trends in spatial beta diversity revealed homogenization of the communities in the outer archipelago zone, but not in the inner bays. The temporal decay of community similarity revealed high turnover rate, with 23.6 years halving time in the outer archipelago and 11.3 years in the inner bays, revealing the differences in eutrophication strength. The observed phytoplankton trends manifest the regional eutrophication history, and dispersal of new species to the unsaturated brackish species pool.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"45 1","pages":"146-162"},"PeriodicalIF":2.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9897023/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10676295","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

Calanus helgolandicus - more than a guest in the north? Calanus helgolandicus，不止是北方的客人?

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2022-12-11 DOI: 10.1093/plankt/fbac070

Mads Schultz, Marvin Choquet, Vigdis Tverberg, Galice Hoarau

引用次数: 0

Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans 罕见但持久的无性繁殖解释了浮游有孔虫在极地海洋中的成功

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2022-12-10 DOI: 10.1093/plankt/fbac069

J. Meilland, M. Ezat, Adele Westgård, C. Manno, R. Morard, M. Siccha, M. Kučera

{"title":"Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans","authors":"J. Meilland, M. Ezat, Adele Westgård, C. Manno, R. Morard, M. Siccha, M. Kučera","doi":"10.1093/plankt/fbac069","DOIUrl":"https://doi.org/10.1093/plankt/fbac069","url":null,"abstract":"\u0000 The reproductive strategy of planktonic foraminifera, key pelagic calcifiers, has long remained elusive, hampering efforts to understand and model their population dynamics. This is particularly critical in polar oceans where their success relies on rapid population growth after the polar night. Here, we provide field and laboratory observations constraining the reproductive cycle of the dominant polar species Neogloboquadrina pachyderma in Antarctic and Arctic waters. We observe that asexual reproduction is a rare but persistent element of the reproductive strategy and that it is reflected in a dimorphism in proloculus and in the ratio of shell size versus the number of chambers between sexually and asexually produced individuals. This dimorphism in natural populations reveals that asexual reproduction supplies more than 75% of adult individuals. This indicates a multigenerational reproduction strategy, where the majority of the population releases gametes to facilitate recombination, while a minority persistently reproduces asexually, allowing rapid population growth as a prerequisite for success in the polar oceans.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47716744","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: 9

Assessing good environmental status through mesozooplankton biodiversity: a step forward 通过中浮游动物生物多样性评估良好环境状况:向前迈进了一步

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2022-12-01 DOI: 10.1093/plankt/fbac067

I Theodorou, S Zervoudaki, I Varkitzi, G Tsirtsis

{"title":"Assessing good environmental status through mesozooplankton biodiversity: a step forward","authors":"I Theodorou, S Zervoudaki, I Varkitzi, G Tsirtsis","doi":"10.1093/plankt/fbac067","DOIUrl":"https://doi.org/10.1093/plankt/fbac067","url":null,"abstract":"We developed a zooplankton-based water-quality evaluating method using indices of alpha diversity. Two key objectives were set: (i) the comparison of two—different quality—samples from different areas, and the verification of their differentiation, based on mesozooplankton biodiversity indices; and (ii) the development of a methodology, which was able to assess the quality of new marine water samples. Our analysis was based on a 24-year-long in situ dataset (1987–2010) of 139 samples in which 86 mesozooplankton taxa were identified. High-diversity and high evenness values were reported in the case of the “good” status sample, while low diversity, low evenness and high dominance values occurred at the lower quality one. A linear discriminant analysis (LDA) was conducted that discriminated the tested samples at 100%. This LDA was then used to evaluate samples of unknown quality. Finally, 90% of them were classified with a probability of correct classification (posterior probability) &gt;95%. The present study proves that mesozooplankton diversity indices can discriminate different levels of anthropogenic impacts. In this sense, it can be used as a reliable indicator for environmental assessment in the pelagic habitats of the Mediterranean Sea.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"15 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138534367","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

Tropical cyclones: what are their impacts on phytoplankton ecology? 热带气旋：它们对浮游植物生态有何影响？

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2022-11-21 eCollection Date: 2023-01-01 DOI: 10.1093/plankt/fbac062

Peter A Thompson, Hans W Paerl, Lisa Campbell, Kedong Yin, Karlie S McDonald

{"title":"Tropical cyclones: what are their impacts on phytoplankton ecology?","authors":"Peter A Thompson, Hans W Paerl, Lisa Campbell, Kedong Yin, Karlie S McDonald","doi":"10.1093/plankt/fbac062","DOIUrl":"10.1093/plankt/fbac062","url":null,"abstract":"Following the passage of a tropical cyclone (TC) the changes in temperature, salinity, nutrient concentration, water clarity, pigments and phytoplankton taxa were assessed at 42 stations from eight sites ranging from the open ocean, through the coastal zone and into estuaries. The impacts of the TC were estimated relative to the long-term average (LTA) conditions as well as before and after the TC. Over all sites the most consistent environmental impacts associated with TCs were an average 41% increase in turbidity, a 13% decline in salinity and a 2% decline in temperature relative to the LTA. In the open ocean, the nutrient concentrations, cyanobacteria and picoeukaryote abundances increased at depths between 100 and 150 m for up to 3 months following a TC. While at the riverine end of coastal estuaries, the predominate short-term response was a strong decline in salinity and phytoplankton suggesting these impacts were initially dominated by advection. The more intermediate coastal water-bodies generally experienced declines in salinity, significant reductions in water clarity, plus significant increases in nutrient concentrations and phytoplankton abundance. These intermediate waters typically developed dinoflagellate, diatom or cryptophyte blooms that elevated phytoplankton biomass for 1-3 months following a TC.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"45 1","pages":"180-204"},"PeriodicalIF":2.1,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9897026/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10666283","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

Minimal diel vertical migration and consistent zooplankton capturability in low productivity reservoirs, Oregon 俄勒冈州低生产力水库中最小的垂直迁移和一致的浮游动物捕获能力

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2022-11-21 DOI: 10.1093/plankt/fbac060

C. Murphy, A. Pollock, A. Strecker, S. Johnson

{"title":"Minimal diel vertical migration and consistent zooplankton capturability in low productivity reservoirs, Oregon","authors":"C. Murphy, A. Pollock, A. Strecker, S. Johnson","doi":"10.1093/plankt/fbac060","DOIUrl":"https://doi.org/10.1093/plankt/fbac060","url":null,"abstract":"\u0000 Diel migrations of zooplanktons occur in marine and freshwater systems and can complicate inferences from studies. If populations perform vertical or horizontal diel migrations, daytime-only sampling can mischaracterize distributions and abundances. Zooplanktons also often display reduced capture avoidance at night and occupy areas easier to sample near the surface and away from littoral structure and the benthos. We examined zooplankton abundance, water column position and taxonomic composition during daytime and nighttime new moon periods using discrete depth sampling in oligo-mesotrophic reservoirs in Oregon, USA. These reservoirs have limited littoral structures, but support populations of zooplanktivorous fishes that we expected to drive diel vertical migrations. Contrary to our expectations, at night, most zooplankton taxa were within 2 m of their daytime distributional peak and did not display differences in abundance from day to night sampling. We consider factors that may help predict whether diel vertical migration occurs in a system. Where daytime sampling is sufficient to characterize zooplankton densities and distributions, costs and risks specific to nighttime sampling may be avoided. Improving our knowledge of zooplankton dynamics, particularly in ecosystems with limited diurnal variability, is an important part of understanding lake and reservoir food webs and can optimize the efforts of future studies.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41733522","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: 1

Small is beautiful: the important role of small copepods in carbon budgets of the southern Benguela upwelling system 小即是美:小型桡足动物在南本格拉上升流系统的碳收支中的重要作用

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2022-11-10 DOI: 10.1093/plankt/fbac061

Maya Bode-Dalby, Randi Würth, Lívia Dias Fernandes de Oliveira, Tarron Lamont, Hans M Verheye, Anna Schukat, Wilhelm Hagen, Holger Auel

{"title":"Small is beautiful: the important role of small copepods in carbon budgets of the southern Benguela upwelling system","authors":"Maya Bode-Dalby, Randi Würth, Lívia Dias Fernandes de Oliveira, Tarron Lamont, Hans M Verheye, Anna Schukat, Wilhelm Hagen, Holger Auel","doi":"10.1093/plankt/fbac061","DOIUrl":"https://doi.org/10.1093/plankt/fbac061","url":null,"abstract":"Small copepod genera play an important role in marine food webs and biogeochemical fluxes but have been neglected in many studies. This is the first study determining biomass, carbon consumption and egestion rates of small- (&lt;1 mm prosome length, PL), medium- (1–1.5 mm PL) and large-sized (&gt;2 mm PL) copepods along a cross-shelf transect in the southern Benguela upwelling system. Calanoids contributed on average 55 ± 19% to total copepod abundance and 82 ± 13% to total copepod biomass. Small-sized Oithona spp. (114–119 mg C m−2 d−1) and Clausocalanidae/Paracalanidae (87–263 mg C m−2 d−1) as well as large-sized Calanoides natalis (47–193 mg C m−2 d−1) were the dominant consumers at the most inshore stations. Small- and medium-sized copepodite stages of Metridia lucens were also important, especially towards the continental slope. At offshore stations, Clausocalanidae/Paracalanidae, Oithona spp., Pleuromamma spp., Calanus agulhensis, Acartia spp., C. natalis and M. lucens were dominant consumers. Hence, usually small- and medium-sized copepods dominated total copepod ingestion and egestion, emphasizing that inadequate representation of small copepods will lead to significant underestimations and misinterpretations of the functioning of zooplankton communities and finally to inadequate biogeochemical models.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"48 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138534376","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

Changes in phytoplankton community structure over a century in relation to environmental factors. 近百年来浮游植物群落结构变化与环境因子的关系

IF 2.1 3区环境科学与生态学

Journal of Plankton Research Pub Date : 2022-10-17 eCollection Date: 2022-11-01 DOI: 10.1093/plankt/fbac055

Elisabeth Lundsør, Wenche Eikrem, Leif Christian Stige, Anette Engesmo, Sandra Gran Stadniczeñko, Bente Edvardsen

{"title":"Changes in phytoplankton community structure over a century in relation to environmental factors.","authors":"Elisabeth Lundsør, Wenche Eikrem, Leif Christian Stige, Anette Engesmo, Sandra Gran Stadniczeñko, Bente Edvardsen","doi":"10.1093/plankt/fbac055","DOIUrl":"https://doi.org/10.1093/plankt/fbac055","url":null,"abstract":"Changes in phytoplankton abundance and biomass during the period 1933-2020 were examined by statistical modeling using data from the Inner Oslofjorden phytoplankton database. The phytoplankton abundances increased with eutrophication from 1930s to 1970s, but with the implementation of sewage cleaning measures and a resulting reduction in nutrient releases, the phytoplankton abundance has since then decreased significantly. The onset of the seasonal blooms has started progressively later during the last 15 years, especially the spring bloom. The delayed spring bloom co-occurred with increasing temperature in winter and spring. The diatom biomass decreased more than that of dinoflagellates and other microeukaryotes. The diatom genus Skeletonema dominated the spring bloom and was found to be the key taxa in explaining these changes in abundance and phenology. Extensive summer blooms of the coccolithophore Emiliania huxleyi, which has been characteristic for the inner Oslofjorden, has also gradually decreased during the last decades, along with reducing eutrophication. Dinoflagellates have not had the same reduction in abundance as the other groups. Despite an increasing proportion of dinoflagellates compared with other taxa, there are no clear indications of increased occurrence of toxic algal blooms in inner Oslofjorden. However, the introduction of new \"toxin-producing\" species may cause concern.","PeriodicalId":16800,"journal":{"name":"Journal of Plankton Research","volume":"44 6","pages":"854-871"},"PeriodicalIF":2.1,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9692196/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40489677","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: 1