Hydrobiologia最新文献

Evaluating satellite and modeled lake surface water temperature across the contiguous United States. 评估卫星和模拟湖泊地表水温横跨美国本土。

IF 2.4 3区生物学

Hydrobiologia Pub Date : 2026-07-01 Epub Date: 2026-03-11 DOI: 10.1007/s10750-026-06178-z

Blake A Schaeffer, Hannah Ferriby, Wilson Salls, Natalie Reynolds, Jeffrey W Hollister, Betty Kreakie, Stephen Shivers, Brent Johnson, Olivia Cronin-Golomb, Kate Meyers, Maxwell Beal

{"title":"Evaluating satellite and modeled lake surface water temperature across the contiguous United States.","authors":"Blake A Schaeffer, Hannah Ferriby, Wilson Salls, Natalie Reynolds, Jeffrey W Hollister, Betty Kreakie, Stephen Shivers, Brent Johnson, Olivia Cronin-Golomb, Kate Meyers, Maxwell Beal","doi":"10.1007/s10750-026-06178-z","DOIUrl":"10.1007/s10750-026-06178-z","url":null,"abstract":"We developed a model to predict surface water temperature across U.S. lakes using satellite remote sensing and in situ observations to enhance cyanobacterial harmful algal bloom (cyanoHAB) forecasting. The study focused on Sentinel-3 Ocean and Land Colour Instrument (OLCI) sensor resolved lakes. We developed random forest models using both Landsat-derived and in-situ-measured surface water temperature. Landsat models offered broad spatial and temporal coverage of all OLCI resolved lakes, but they were sensitive to cloud cover and required filtering to minimize error. In contrast, the in situ model represented fewer OLCI resolved lakes, but yielded lower mean absolute error and bias. The models predicted lake surface temperature across the entire calendar year, with best performance (RMSEapplied = 1.11; biasapplied = 0.01; MAEapplied = 0.77) from the in situ model. This approach allowed for the continuous prediction of lake surface temperatures from 1.1 to 31.6 °C for unfrozen, open-water conditions critical for improving the accuracy of cyanoHAB forecasting. A key strength of this study was the use of an extensive dataset and model validation against in situ observations, which improved predictive accuracy throughout the year across all seasons. The predictive model offers a water resource tool for management, ecosystem protection, and public health.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"853 13","pages":"3715-3737"},"PeriodicalIF":2.4,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13426774/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148653430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Whole-stream wastewater addition stimulates the green food web pathway but does not affect food chain length. 全流废水的添加刺激了绿色食物网通路，但不影响食物链长度。

IF 2.4 3区生物学

Hydrobiologia Pub Date : 2026-01-01 Epub Date: 2026-01-22 DOI: 10.1007/s10750-025-06103-w

Ioar de Guzman, Mario Brauns, Arturo Elosegi, Daniel von Schiller, Jose M González, José M Montoya, Aitor Larrañaga

{"title":"Whole-stream wastewater addition stimulates the green food web pathway but does not affect food chain length.","authors":"Ioar de Guzman, Mario Brauns, Arturo Elosegi, Daniel von Schiller, Jose M González, José M Montoya, Aitor Larrañaga","doi":"10.1007/s10750-025-06103-w","DOIUrl":"10.1007/s10750-025-06103-w","url":null,"abstract":"Most rivers in developed regions receive tertiary-treated effluents from wastewater treatment plants that still contain a complex mixture of pollutants, but their combined effects on food webs are poorly understood. We had the unique opportunity to divert treated effluent into a previously pristine stream and conduct a before-after/control-impact/paired experiment to quantify effluent effects on green and brown food web pathways (i.e., algae and detritus-based pathways) and total food chain length. We hypothesized that the increased biofilm biomass after the effluent addition would promote its consumption by primary consumers, thus favoring the green pathway. Moreover, we hypothesized that the increase in the primary production would lead to an increase in food chain length. Coarse detritus remained the main food resource for primary consumers, but the addition of the effluent promoted biofilm biomass and increased the relative importance of the green food web pathway. However, the effluent discharge did not impact food chain length. The present study reveals that properly treated and substantially diluted effluents can still affect food web pathways through changes in dietary composition of consumers. Thus, further reducing nutrient inputs from WWTPs would minimize the impacts of effluents on food webs.Supplementary information: The online version contains supplementary material available at 10.1007/s10750-025-06103-w.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"853 9","pages":"2681-2694"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13035594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147591857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of lateral hydrological connectivity on the relative abundance of water frogs (Pelophylax spp.) and common toads (Bufo bufo) using eDNA surveys. 横向水文连通性对水蛙（Pelophylax spp.）和普通蟾蜍（Bufo Bufo）相对丰度的影响

IF 2.4 3区生物学

Hydrobiologia Pub Date : 2026-01-01 Epub Date: 2026-01-29 DOI: 10.1007/s10750-026-06110-5

Boglárka Mészáros, Andrea Funk, Thomas Hein, Lukas Landler, Paul Meulenbroek, Didier Pont, Alice Valentini, Dénes Schmera, István Czeglédi, Tibor Erős

{"title":"Effects of lateral hydrological connectivity on the relative abundance of water frogs (Pelophylax spp.) and common toads (Bufo bufo) using eDNA surveys.","authors":"Boglárka Mészáros, Andrea Funk, Thomas Hein, Lukas Landler, Paul Meulenbroek, Didier Pont, Alice Valentini, Dénes Schmera, István Czeglédi, Tibor Erős","doi":"10.1007/s10750-026-06110-5","DOIUrl":"10.1007/s10750-026-06110-5","url":null,"abstract":"Riverine floodplains support diverse amphibian communities by providing essential habitats, with lateral hydrological connectivity (LHC or hydrology) determining local environmental conditions. Our study evaluated the direct and indirect effects of LHC on the two most abundant species in a riverine floodplain. We assessed the relative abundance of water frogs (Pelophylax spp.) and common toads (Bufo bufo) using eDNA surveys at 30 sites along an LHC gradient in the Danube River floodplain. We examined the habitat structure, vegetation cover, and the physical and chemical characteristics of waterbodies. Structural equation models (SEM) were used to explore LHC's direct and indirect effects, mediated by these environmental factors. Results showed that LHC did not directly influence Pelophylax spp. and B. bufo abundance but affected them indirectly and species specifically through environmental drivers. Hydrology negatively and indirectly impacted Pelophylax spp. through vegetation cover and the physical and chemical properties of waterbodies. B. bufo was affected in a similar way but primarily through habitat structure. Our findings highlight the importance of understanding species-specific responses to lateral hydrological connectivity in dynamic environments, as river regulation altering LHC can differentially impact amphibian species in riverine floodplains.Supplementary information: The online version contains supplementary material available at 10.1007/s10750-026-06110-5.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"853 9","pages":"2751-2767"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13098841/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147770040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decadal predictions of future habitat favourability of the European green crab (Carcinus maenas) on the Pacific Coast of North America. 北美太平洋沿岸欧洲绿蟹（Carcinus maenas）未来生境有利的十年预测。

IF 2.4 3区生物学

Hydrobiologia Pub Date : 2026-01-01 Epub Date: 2026-04-23 DOI: 10.1007/s10750-026-06149-4

D A Villar, Aaron Clark-Ginsberg, Rebecca Tisherman

{"title":"Decadal predictions of future habitat favourability of the European green crab (Carcinus maenas) on the Pacific Coast of North America.","authors":"D A Villar, Aaron Clark-Ginsberg, Rebecca Tisherman","doi":"10.1007/s10750-026-06149-4","DOIUrl":"10.1007/s10750-026-06149-4","url":null,"abstract":"The European green crab (Carcinus maenas) is a globally important invasive species. Since 1989, it has been spreading north from San Francisco Bay on the Pacific Coast of North America. Climate change is likely to lead to the species spreading further north into Alaskan and Arctic waters. Previous studies predicting its potential future distribution have focused on its range at the end of the century, under only one of multiple climate change scenarios. We used Bayesian Additive Regression Trees (BART) and benthic environmental variable predictors derived from the latest Intergovernmental Panel on Climate Change report to produce decadal predictions under four climate change scenarios; SSP1, SSP2, SSP4, and SSP5. We find that under all but the lowest emission scenarios, the European green crab will find suitable habitat as far north as the Seward Peninsula, and potentially, under the highest emission scenarios, into the Arctic Circle. This could have devastating consequences for the local ecology of the Pacific Coast of North America, for local economies dependent on fisheries, and for local communities, particularly indigenous communities. Increased monitoring in regions where green crab is likely to find favourable habitat could help with early detection, and potentially early functional eradication before populations establish themselves.Supplementary information: The online version contains supplementary material available at 10.1007/s10750-026-06149-4.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"853 12","pages":"3389-3407"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13216171/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148137839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Taxonomic and functional responses of benthic and drifting macroinvertebrates to fine sediment deposition: evidence from an alpine flume-based experiment. 底栖动物和漂流大型无脊椎动物对细沉积物沉积的分类和功能响应：来自高山水槽实验的证据。

IF 2.5 3区生物学

Hydrobiologia Pub Date : 2026-01-01 Epub Date: 2025-11-13 DOI: 10.1007/s10750-025-06014-w

Alberto Doretto, Andrea Faiola, Serena Masserano, Paola Rossi, Matteo Sassone, Matteo Zanarotto, Camilla Zucchi, Paul J Wood, Kate L Mathers

{"title":"Taxonomic and functional responses of benthic and drifting macroinvertebrates to fine sediment deposition: evidence from an alpine flume-based experiment.","authors":"Alberto Doretto, Andrea Faiola, Serena Masserano, Paola Rossi, Matteo Sassone, Matteo Zanarotto, Camilla Zucchi, Paul J Wood, Kate L Mathers","doi":"10.1007/s10750-025-06014-w","DOIUrl":"10.1007/s10750-025-06014-w","url":null,"abstract":"Excessive fine sediment deposition is a global pervasive issue in rivers and, in particular, for benthic organisms including macroinvertebrates. However, the assessment of fine sediment effects on the taxonomic and functional diversity of macroinvertebrate communities is challenging because of context-dependent confounding factors, such as river-flow conditions, land-use change, and anthropogenic pressures. By using a set of outdoor artificial flumes, this study examined the immediate (24-48 h) and two weeks post-addition response of Alpine stream macroinvertebrates to experimental deposition of fine sediment (7.5 kg m2). The taxonomic composition of benthic macroinvertebrate communities demonstrated significant differences between control and sediment-affected flumes; while taxonomic composition of drifting macroinvertebrates varied over time, with higher taxonomic heterogeneity for sedimented communities than control flumes. Nestedness was consistently the dominant component that contributed to beta-diversity patterns for both benthic and drifting invertebrates. No differences in taxonomic and functional community metrics were observed between control and sedimented communities, with the exception of a significant reduction in the total abundance of benthic macroinvertebrates in sedimented flumes. This study is one of the first flume-based experiments dealing with the response of Alpine stream macroinvertebrates to fine sediment deposition, and the findings highlight the context specific nature of fine sediment effects.Supplementary information: The online version contains supplementary material available at 10.1007/s10750-025-06014-w.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"853 5","pages":"1527-1546"},"PeriodicalIF":2.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12855233/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146105275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inorganic nutrient input effects and severity of disturbance in zooplankton community structure 浮游动物群落结构的无机养分输入效应及扰动程度

3区生物学

Hydrobiologia Pub Date : 2025-10-01 DOI: 10.1007/s10750-025-05998-9

Warren Meredith, Anna Menció, Maria Antón‐Pardo, Anna M. Romaní, Núria Perujo, Dani Boix, Stéphanie Gascón, Jordi Compte, Jordi Sala, María Bas‐Silvestre, Xavier D. Quintana

{"title":"Inorganic nutrient input effects and severity of disturbance in zooplankton community structure","authors":"Warren Meredith, Anna Menció, Maria Antón‐Pardo, Anna M. Romaní, Núria Perujo, Dani Boix, Stéphanie Gascón, Jordi Compte, Jordi Sala, María Bas‐Silvestre, Xavier D. Quintana","doi":"10.1007/s10750-025-05998-9","DOIUrl":"https://doi.org/10.1007/s10750-025-05998-9","url":null,"abstract":"Abstract Mediterranean coastal lagoons are increasingly affected by nutrient enrichment from both natural and anthropogenic sources. While most studies focus on total nutrient loads, little is known about how the mode of nutrient delivery, pulsed or continuous, affects plankton community dynamics. This study aimed to experimentally test how different nutrient input regimes influence zooplankton community structure and plankton biomass under microcosm conditions using natural lagoon water. Three nutrient regimes were applied: Pulse (P), Continuous (C), and Pulse–Continuous (PC), along with a Control (no addition), with total nutrient concentrations standardized across regimes. Biomass of bacterioplankton, phytoplankton, and zooplankton, as well as hydrochemical variables and species composition, were monitored over 28 days. P regimes led to reduced zooplankton biomass and impaired reproduction, while C and PC regimes maintained higher productivity and favored shifts in rotifer and copepod composition. To evaluate community response, we used the Z 2 index, a disturbance metric developed for Mediterranean lagoons that quantifies the severity of environmental disturbance based on zooplankton assemblages. Z 2 scores revealed a gradient aligned with nutrient delivery mode, with small but consistent increases in C and PC regimes. These findings highlight the potential long-term impacts of continuous low-level nutrient inputs in restructuring aquatic communities.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10750-025-05998-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147884579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Lifespan extension by rapamycin in Brachionus dorcas (Rotifera) is dose and developmental stage dependent 雷帕霉素对dorcas Brachionus （Rotifera）寿命的延长与剂量和发育阶段有关

3区生物学

Hydrobiologia Pub Date : 2025-01-23 DOI: 10.1007/s10750-025-05804-6

Ting Liu, Han-Bing Dong, Bao-Chun Shi, Hao-Yue Zhao, Zhao-Yun Wang, Lin Liu, Wen Li, Yi‐Long Xi

引用次数: 0

High-frequency diatom dynamics seen in an ice- and snow-covered temperate lake using an imaging-in-flow cytometer. 用流式细胞仪成像在冰雪覆盖的温带湖泊中观察到的高频硅藻动力学。

IF 2.2 3区生物学

Hydrobiologia Pub Date : 2025-01-01 Epub Date: 2025-02-06 DOI: 10.1007/s10750-025-05802-8

Tara Tapics, Irene Gregory-Eaves, Yannick Huot

{"title":"High-frequency diatom dynamics seen in an ice- and snow-covered temperate lake using an imaging-in-flow cytometer.","authors":"Tara Tapics, Irene Gregory-Eaves, Yannick Huot","doi":"10.1007/s10750-025-05802-8","DOIUrl":"https://doi.org/10.1007/s10750-025-05802-8","url":null,"abstract":"The study of winter in temperate, ice-covered lakes has largely been neglected, creating a major gap in our understanding of annual phytoplankton cycles. We assessed patterns in biovolumes of Asterionella, cf. Synedra, Urosolenia, and total phytoplankton at three depths during the winter of 2014/2015 as estimated using images from an Imaging FlowCytobot (IFCB) moored in Lac (Lake) Montjoie, Quebec (Canada). Even though the use of the IFCB under-ice presented challenges, these were outstripped by its advantages. The IFCB provided unprecedented high temporal and spatial resolution phytoplankton count and biovolume data that allowed patterns of abundance to be observed in detail. Interestingly, the IFCB captured an abundance of Urosolenia, which may be dissolved in standard Lugol's-preserved grab samples. We found Asterionella grew until mid-December and then slowly decreased towards the spring, whereas cf. Synedra diatoms decreased from early December and then rebounded towards late December as light increased before falling again towards the spring. Urosolenia peaked in late December as cf. Synedra diatoms rebounded and then began to decline towards the spring. Total phytoplankton declined towards late December, increased in the beginning of January and then declined towards the spring. The studied diatoms maintained considerable under-ice seed populations and grew when light was sufficient.Supplementary information: The online version contains supplementary material available at 10.1007/s10750-025-05802-8.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"852 11","pages":"2887-2905"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11982112/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights into the feeding of jellyfish polyps in wild and laboratory conditions: do experiments provide realistic estimates of natural functional rates? 对野生和实验室条件下水母珊瑚虫摄食的洞察：实验是否提供了自然功能率的现实估计？

IF 2.5 3区生物学

Hydrobiologia Pub Date : 2025-01-01 Epub Date: 2025-03-14 DOI: 10.1007/s10750-024-05783-0

Cathy H Lucas, Danja P Höhn, Clive N Trueman

{"title":"Insights into the feeding of jellyfish polyps in wild and laboratory conditions: do experiments provide realistic estimates of natural functional rates?","authors":"Cathy H Lucas, Danja P Höhn, Clive N Trueman","doi":"10.1007/s10750-024-05783-0","DOIUrl":"10.1007/s10750-024-05783-0","url":null,"abstract":"Biotic and abiotic factors that affect the physiology and ecology of scyphozoan polyps are considered to be major drivers of jellyfish blooms, but are rarely studied under field conditions. Here, stable isotopes of carbon and nitrogen were used to investigate feeding ecology in Aurelia aurita polyps from the Beaulieu River, UK (50° 80' 04.55″ N/1° 42' 28.12″ W) in both winter and summer conditions, and compared to laboratory-maintained polyps fed Artemia nauplii at 6 and 20 °C, respectively. In natural conditions, the isotopic composition of A. aurita polyps indicated assimilation of nutrients derived from both benthic and pelagic food pathways, with seasonal switches between benthic-derived nutrients in winter and pelagic-derived nutrients in summer. In laboratory experiments, polyps assimilated Artemia food at 6 °C although metabolic processes were reduced, while at 20 °C, polyps starved as their increased metabolic costs could not be met from the Artemia food. Experiments on growth and asexual reproduction of Artemia-fed polyps of A. aurita may not reflect natural metabolic rates especially at higher temperatures (e.g. 20 °C), because these polyps are not extracting sufficient resources from their Artemia food to fuel the increased metabolic costs associated with high temperatures.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"852 21","pages":"5249-5259"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12568851/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145408882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ estimation of phytoplankton community growth rate inside dialysis membrane bags: a bioassay experiment at a fish farm in the eastern Aegean Sea 透析膜袋内浮游植物群落生长率的现场估算：东爱琴海养鱼场的生物测定实验

IF 2.6 3区生物学

Hydrobiologia Pub Date : 2024-09-16 DOI: 10.1007/s10750-024-05643-x

Betül Bardakcı Şener, Eyüp Mümtaz Tıraşın

{"title":"In situ estimation of phytoplankton community growth rate inside dialysis membrane bags: a bioassay experiment at a fish farm in the eastern Aegean Sea","authors":"Betül Bardakcı Şener, Eyüp Mümtaz Tıraşın","doi":"10.1007/s10750-024-05643-x","DOIUrl":"https://doi.org/10.1007/s10750-024-05643-x","url":null,"abstract":"We conducted a study to investigate the potential effects of nutrients released from a fish farm, which fell within the typical range found in oligotrophic offshore waters of the Aegean Sea, on phytoplankton growth. We designed an in situ bioassay experiment at a fish farm and incubated natural phytoplankton assemblages inside dialysis membrane bags for six days. Changes in phytoplankton growth in samples of ambient seawater collected throughout the experiment served as controls and were considered indicative of the net population change rates. Half of the bags were filled with seawater filtered through a 150-µm mesh, while the other half contained unfiltered seawater. The growth rates, estimated based on chlorophyll a concentrations and phytoplankton cell numbers inside the filtered and unfiltered bags, showed no significant differences. While no detectable net phytoplankton growth occurred in the ambient seawater, there was an exponential increase in chlorophyll a content and cell numbers within the bags. Moreover, the species richness within the bags gradually declined throughout the experiment. The findings of the study confirm that continuous nutrient releases from fish farms can promote high population growth rates in oligotrophic environments, provided that phytoplankton losses due to grazing, advection, and sinking are minimized or eliminated.","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"20 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142265965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0