Aquatic Microbial Ecology最新文献_第5页

Impact of El Niño-Southern Oscillation on plankton ciliates from a saline lowland river in South America El Niño-Southern振荡对南美含盐低地河流浮游纤毛虫的影响

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/ame01980

GC Küppers, ME Bazzuri, NC Neschuk, MC Claps

引用次数: 1

The feeding ecology and microbiome of the pteropod Limacina helicina antarctica 南极翼足动物的摄食生态和微生物群

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/ame01981

PS Thibodeau, B. Song, C. Moreno, D. Steinberg

引用次数: 4

Human impact on symbioses between aquatic organisms and microbes 人类对水生生物和微生物共生的影响

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01973

W. Stock, M. Callens, S. Houwenhuyse, R. Schols, N. Goel, M. Coone, C. Theys, V. Delnat, A. Boudry, EM Eckert, C. Laspoumaderes, H. Grossart, L. Meester, R. Stoks, K. Sabbe, E. Decaestecker

{"title":"Human impact on symbioses between aquatic organisms and microbes","authors":"W. Stock, M. Callens, S. Houwenhuyse, R. Schols, N. Goel, M. Coone, C. Theys, V. Delnat, A. Boudry, EM Eckert, C. Laspoumaderes, H. Grossart, L. Meester, R. Stoks, K. Sabbe, E. Decaestecker","doi":"10.3354/AME01973","DOIUrl":"https://doi.org/10.3354/AME01973","url":null,"abstract":"Aquatic organisms rely on microbial symbionts for coping with various challenges they encounter during stress and for defending themselves against predators, pathogens and parasites. Microbial symbionts are also often indispensable for the host’s development or life cycle completion. Many aquatic ecosystems are currently under pressure due to diverse human activities that have a profound impact on ecosystem functioning. These human activities are also ex pected to alter interactions between aquatic hosts and their associated microbes. This can directly impact the host’s health and — given the importance and widespread occurrence of microbial symbiosis in aquatic systems — the ecosystem at large. In this review, we provide an overview of the importance of microbial symbionts for aquatic organisms, and we consider how the beneficial services provided by microbial symbionts can be affected by human activities. The scarcity of available studies that assess the functional consequences of human impacts on aquatic microbial symbioses shows that our knowledge on this topic is currently limited, making it difficult to draw general conclusions and predict future changes in microbial symbiont−host relationships in a changing world. To address this important knowledge gap, we provide an overview of ap proaches that can be used to assess the impact of human disturbances on the functioning of aquatic microbial symbioses.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"4 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90378293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 8

Extracellular enzyme activity under subzero hypersaline conditions by model cold-adapted bacteria and Arctic sea-ice microbial communities 模型冷适应细菌和北极海冰微生物群落在零下高盐条件下的胞外酶活性

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/ame01974

GM Showalter, JW Deming

引用次数: 2

Effects of nutrient enrichments on oligotrophic phytoplankton communities: a mesocosm experiment near Hawai‘i, USA 营养物富集对寡营养浮游植物群落的影响:美国夏威夷附近的一个中生态试验

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/ame01977

D. Böttjer-Wilson, Angelicque E. White, K. Björkman, M. Church, S. Poulos, E. Shimabukuro, YM Rii, A. Ludwig, K. V. Brockel, U. Riebesell, Ricardo M Letelier, D. Karl

{"title":"Effects of nutrient enrichments on oligotrophic phytoplankton communities: a mesocosm experiment near Hawai‘i, USA","authors":"D. Böttjer-Wilson, Angelicque E. White, K. Björkman, M. Church, S. Poulos, E. Shimabukuro, YM Rii, A. Ludwig, K. V. Brockel, U. Riebesell, Ricardo M Letelier, D. Karl","doi":"10.3354/ame01977","DOIUrl":"https://doi.org/10.3354/ame01977","url":null,"abstract":": A large-volume mesocosm-based nutrient perturbation experiment was conducted off the island of Hawai‘i, USA, to investigate the response of surface ocean phytoplankton communities to the addition of macronutrients, trace metals, and vitamins and to assess the feasibility of using mesocosms in the open ocean. Three free-drifting mesocosms (~60 m 3 ) were de ployed: one mesocosm served as a control (no nutrient amendments); a second (termed +P) was amended with nitrate (N), silicate (Si), phosphate (P), and a trace metal + vitamin mixture; and a third (termed −P) was amended with N, Si, and a trace metal + vitamin mixture but no P. These meso-cosms were unreplicated due to logistical constraints and hence differences between treatments are qualitative. After 6 d, the largest response of the phytoplankton community was ob served in the +P mesocosm, where chlorophyll a and 14 C-based primary production were 2−3× greater than in the −P mesocosm and 4−6× greater than in the control. Comparison between mesocosm and ‘microcosm’ incubations (20 l) revealed differences in the magnitude and timing of production and marked differences in community structure with a reduced response of diatoms in microcosm treatments. Notably, we also observed pronounced declines in Prochlorococcus populations in all treatments, although these were greater in microcosms (up to 99%). Overall, this study confirmed the feasibility of deploying free-drifting mesocosms in the open ocean as a potentially powerful tool to investigate ecological impacts of nutrient perturbations and constitutes a valuable first step towards scaling plankton manipulation experiments.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"37 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81060783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Bacterial community dynamics during a harmful algal bloom of Heterosigma akashiwo 赤岛异西格玛有害藻华期间的细菌群落动态

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01963

G. Matcher, D. Lemley, J. Adams

{"title":"Bacterial community dynamics during a harmful algal bloom of Heterosigma akashiwo","authors":"G. Matcher, D. Lemley, J. Adams","doi":"10.3354/AME01963","DOIUrl":"https://doi.org/10.3354/AME01963","url":null,"abstract":"Phytoplankton bloom events result in distinct changes in the composition and availability of nutrients as well as physical conditions within aquatic ecosystems, resulting in significant effects on bacterial communities. Using a metabarcoding approach, this study investigated the effect of a harmful algal bloom (HAB) of Heterosigma akashiwo in the Sundays Estuary, South Africa, on bacterial community structures in this estuarine ecosystem over an entire bloom event. The occurrence of bacterial lineages occurring in both the oxygen-rich surface water and hypoxic bottom waters in this study reflects the respiratory flexibility and potential for both aerobic and anaerobic metabolism across a wide range of bacterial phylogenetic lineages. A close correlation between the bacterial community profiles and the physiological state of the bloom was observed, with Flavobacteria found in increased relative abundances during the H. akashiwo HAB. Flavobacteria are commonly reported in the literature associated with algal blooms, which is indicative of their central role in the degradation of algal-derived organic matter. Halieaceae were prevalent during the bloom, whilst Synechococcales, Cryomorphaceae and Sporichthyaceae were found to be positively correlated with the decay of the H. akashiwo bloom. Rhodobacteraceae correlated significantly with the H. akashiwo bloom; however, unlike the Rhodobacteraceae specific bloom-associated genera reported in literature (predominantly Roseobacter), up to 74% of the Rhodobacteraceae sequence reads in this study were assigned to the genus Litorimicrobium. The distinct bacterial community profiles recorded throughout the H. akashiwo HAB can be attributed to the influence of the bloom-forming species as well as under-representation of estuarine-occurring HABs in the literature.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"36 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77603709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 10

Prokaryotic community composition and structure during Phaeocystis globosa blooms in the Beibu Gulf, China 北部湾球形褐囊藻华过程中的原核生物群落组成和结构

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01962

C. He, S. Xu, Z. Kang, S. Song, C. Li

{"title":"Prokaryotic community composition and structure during Phaeocystis globosa blooms in the Beibu Gulf, China","authors":"C. He, S. Xu, Z. Kang, S. Song, C. Li","doi":"10.3354/AME01962","DOIUrl":"https://doi.org/10.3354/AME01962","url":null,"abstract":"Phaeocystis globosa blooms have become one of the major ecological issues in the Beibu Gulf, China, in recent years, resulting in a series of negative impacts on local fisheries and industry. While prokaryotes play key roles in nutrient cycling and energy flow during algal blooms, information regarding the response of the prokaryotic community during Phaeocystis blooms remains scarce. Thus, a comprehensive field study covering the onset and senescent phase of P. globosa blooms was conducted in the area from December 2016 to February 2017. The community composition was revealed with high-throughput sequencing of the 16S rRNA gene. A total of 7426 operational taxonomic units (OTUs) (97% similarity) were identified from 3132328 effective tags, with Proteobacteria, Cyanobacteria, Thaumarchaeota, Verrucomicrobia, Euryarchaeota, Actinobacteria, and Bacteroidetes being the predominant taxa. The composition and structure of particle-attached (PA) and free-living (FL) prokaryotic communities were significantly different: the PA fraction was more diverse and unstable temporally compared to the FL fraction. Variations in the composition and structure of the prokaryotic community were closely associated with major environmental variables, particularly dissolved oxygen (DO), NH4+, PO43-, and dissolved organic carbon (DOC). The presence of P. globosa may result in differences in the prokaryotic community; members of Rhodobacteraceae, Alteromonadales, Porticoccaceae, Vibrio, Flavobacteriales, and Verrucomicrobiae were the key taxa in the prokaryotic communities during the outbreak and senescent phases of P. globosa blooms. This study provides primary information on the response of prokaryotic communities during P. globosa blooms and will facilitate further study on biogeochemical processes of algal-derived organic matter in the tropical gulf.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"81 6 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80757838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

Temporal variation in community structure of zoosporic fungi in Lake Biwa, Japan 琵琶湖游动孢子真菌群落结构的时间变化

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01970

P. Song, R. Yi, S. Tanabe, N. Goto, K. Seto, M. Kagami, S. Ban

{"title":"Temporal variation in community structure of zoosporic fungi in Lake Biwa, Japan","authors":"P. Song, R. Yi, S. Tanabe, N. Goto, K. Seto, M. Kagami, S. Ban","doi":"10.3354/AME01970","DOIUrl":"https://doi.org/10.3354/AME01970","url":null,"abstract":"Zoosporic fungi play an important role in aquatic environments, but their diversity, especially that of parasitic fungi of phytoplankton, has still not been fully revealed. We conducted monthly analyses of the community structure of zoosporic fungi at a pelagic site in Lake Biwa, Japan, from May to December 2016. Metabarcoding analysis, targeted to a large subunit region of ribosomal DNA in the nano-size fraction of particles (2−20 μm), was carried out on the samples. We also counted large phytoplankton and chytrid sporangia attached to the hosts. We detected 3 zoosporic fungal phyla (Blastocladiomycota, Chytridiomycota and Cryptomycota) within 107 operational taxonomic units (OTUs), in which Chytridiomycota was the most diverse and abundant phylum. Few fungal OTUs overlapped between months, and specific communities were detected in each month. These results showed that diverse zoosporic fungi with high temporal variability inhabited the lake. Five large phytoplankton species were found to be infected by chytrids: Staurastrum dorsidentiferum, S. rotula, Closterium aciculare, Asterionella formosa and Aulacoseira granulata. Some chytrids were detected by metabarcoding analysis: Zygophlyctis asterionellae infecting A. formosa, Staurastromyces oculus infecting S. dorsidentiferum and Pendulichytrium sphaericum infecting A. granulata. One OTU detected in association with infected C. aciculare by microscopic counting might have been an obligate parasitic chytrid of C. aciculare. The results indicated that a combination of metabarcoding and microscopic analysis revealed more information on zoosporic fungi, including those that are parasitic.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"48 4 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89600328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

Fungal communities of submerged fine detritus from temperate peatland and stream habitats 温带泥炭地和溪流生境中淹没细碎屑的真菌群落

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01969

DB Raudabaugh, E. Bach, J. Allen, Andy Miller

{"title":"Fungal communities of submerged fine detritus from temperate peatland and stream habitats","authors":"DB Raudabaugh, E. Bach, J. Allen, Andy Miller","doi":"10.3354/AME01969","DOIUrl":"https://doi.org/10.3354/AME01969","url":null,"abstract":"Fungi are essential in aquatic ecosystems, transforming organic matter into energy sources that support higher trophic levels. However, researchers do not yet know the extent of fungal diversity and species distribution within these important ecosystems. Therefore, we examined the detrital fungal communities from contrasting aquatic habitats (temperate peatlands and streams) to provide an in-depth inventory and greater understanding of how these communities differ. Fine submerged detritus or substrate on or beneath the stream bed were collected from 6 sites. Fungal cultures were isolated from samples collected in May, July/August, and November from 2 sites in 2014 and 4 sites in 2016. Culture-independent analyses were conducted on 42 environmental samples collected in November 2016. Results indicated that peatland and stream fungal communities were taxonomically diverse, phylogenetically distinct, and harbored many unknown taxa from the kingdom Fungi. Specifically, stream habitats were more species-rich, in both number of species and phylogenetic diversity, compared to peatland habitats. In addition, fungal species and phylogenetic distribution within most major fungal classes were distinct between peatland and stream fungal communities. In light of global climate change, habitat loss, and water pollution, it has become increasingly important to examine these understudied and essential fungal communities within these ecosystems.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"28 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74230173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Diversity of picoeukaryotes in the eastern equatorial Indian Ocean revealed by metabarcoding 元条形码技术揭示的东赤道印度洋微真核生物多样性

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01965

C. Yuan, Y. Li, X. Zhang, M. Ge, M. Xin, L. Liu, Z. Wang

引用次数: 1