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Environmental DNA based biomonitoring for hatchery-raised fish in riverine habitats before and after recordable flood event J. Freshw. Ecol. (IF 1.3) Pub Date : 2024-04-12 Seiji Miyazono, Hideaki Miyahira, Takumi Hanaoka, Ryohei Nakao, Yoshihisa Akamatsu
It is reported that the magnitudes of flood events in riverine systems have been increasing due to global climate change. Because flood events could displace fish species downstream and/or increase...
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Differential response patterns of soil fungal and bacterial communities to typical vegetation types in the Yellow River floodplain ecosystem J. Freshw. Ecol. (IF 1.3) Pub Date : 2024-04-10 Jinyong Gao, Binghai Lei, Qianyun Yu, Yaru Nie, Anwei Su, Mingli Zang, Shengyao Cai, Wenwen Zhang, Tingting Fang, Yanyan Yu
Soil microorganisms are one of the primary driving factors of biogeochemical cycles in floodplain ecosystems. Vegetation type has an impact on the activities of soil microorganisms. However, it is ...
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The influence of in-stream structures on temperature dynamics via induced hyporheic exchange J. Freshw. Ecol. (IF 1.3) Pub Date : 2024-03-14 Jinghong Feng, Junxiong Luo, Ying Liu, Liu Defu, Linlin Li, Ziyan Lu, Xunchuan Song, Weiping Jiang
In-stream restoration structures, such as woody weirs, are intended to enhance hyporheic exchange, thus altering temperature dynamics in restored reaches. However, the relative effects of various i...
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Long-term evolution and driving mechanisms of the Baiyangdian wetland based on land cover frequency characteristics J. Freshw. Ecol. (IF 1.3) Pub Date : 2024-03-13 Chao-fan Guo, Dong-liang Zhao, Dong-li Wu
For sustainable conservation and management of wetlands, it is essential to quantify the evolution progress and driving mechanisms of wetlands. This study examined Baiyangdian Wetland as a research...
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Influence of a protected riparian corridor on the benthic aquatic macroinvertebrate assemblages of a small northern Michigan (USA) agricultural stream J. Freshw. Ecol. (IF 1.3) Pub Date : 2024-02-28 Molly F. Williams, David C. Houghton
The biotic integrity of streams is frequently compromised by anthropogenic disturbance; thus, it is important to study the potential mitigating effects of undisturbed riparian zones on streams with...
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Effects of cadmium on gametophyte growth and archegonia development in the endangered floating fern Ceratopteris pteridoides in China J. Freshw. Ecol. (IF 1.3) Pub Date : 2024-01-16 Yuanhuo Dong, Chengyu Song, Hong Liu, Mengxue Ma, Changli Zeng
Ceratopteris pteridoides is an endangered annual floating fern in China. This study tested the effect of cadmium on gametophyte growth and archegonia development of the aquatic fern C. pteridoides ...
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Invasive Round goby Neogobius melanostomus distribution, relative abundance, and establishment in pools of the Illinois Waterway following 30 years of invasion J. Freshw. Ecol. (IF 1.3) Pub Date : 2024-01-12 Brandon S. Harris, Michael J. Spear, Andrya L. Whitten, Eric C. Hine, Allison W. Lenaerts, Andrew T. Mathis, Kristopher A. Maxson, Madison Myers, Melissa Oubre, Samuel J. Schaick, Levi E. Solomon, Andrew T. Wieland, Jesse A. Williams, James T. Lamer
Round goby Neogobius melanostomus – a small, benthic fish native to Eurasia – was first introduced to North America in the 1980s through ballast water of cargo ships. In 1990, the Round goby was fi...
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Distribution and source of nutrients and dissolved organic matter in the Dagang river sediments in southeast Hubei, China J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-12-13 Wenwen Xia, Xiaowen Lin, Xiaodong Wu, Xuguang Ge, Zhenni Gao, Zhenhua Sun, Rukeye Wushuer, Yeqing Liu
Inflowing rivers input many pollutants into lakes, affecting their water quality and ecological health. The contents of total nitrogen (TN), total phosphorus (TP) and organic matter (OM) in the Dag...
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Ecological niche modeling of diploid flowering rush (Butomus umbellatus L.) in the United States J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-12-15 Maxwell G. Gebhart, Ryan M. Wersal
Flowering rush (Butomus umbellatus L.) is an invasive perennial monocot found along the United States (U.S.).–Canadian border which can grow into large monotypic mats that can cause water use issue...
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Spatial variation and potential ecological risk assessment of trace elements in the sediments of Chaohu Lake in China J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-12-15 ChangLi Hu, Ting Hu, Long Liang
Chaohu is a large freshwater lake. It plays an essential part in agriculture, life, and part of the industry. This study analyzed the heavy metals contents of copper (Cu), zinc (Zn), cadmium (Cd), ...
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Animal-sourced model of human norovirus infection predicted using environmental DNA metabarcoding analysis J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-12-13 Yukuto Sato, Jun Yasuda, Masahiro Sakurai
Human noroviruses (HNVs) are one of the major causes of food poisoning and severe gastroenteritis. However, prevention and medical treatment of HNV disease is underdeveloped due to the lack of ecol...
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The impact of water level changes on the growth and physiology of Arundo donax var. versicolor J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-12-11 Kai-jing Xin, Huang-yu Bao, Rong-hua Liang, Xiao-jia Tang, Na Guan, Yun Cao
In order to investigate the effects of water level changes on the growth and physiology of Arundo donax var. versicolor and to understand its adaptive mechanisms to water level fluctuations, this s...
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Zooplankton as ecosystem indicators and their effects on eutrophication in Lake Arekit (Ethiopia) – implication for freshwater habitat management J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-11-29 Yirga Enawgaw, Solomon Wagaw, Assefa Wosnie, Kassahun Tessema
This paper examines the zooplankton abundance and composition along with various environmental factors in Lake Arekit – a shallow freshwater habitat in Ethiopia’s rift valley system. Zooplankton sa...
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Water environment quality of Dongyu River and estuary area of Nansi lake (Shandong Province, China) based on the characteristics of diatom community J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-11-01 Shuyu Tong, Liwei Yang, Liyuan Wang, Ran Yang, Shiyue Chen
The Dongyu River is a national site for monitoring the inflow of Nansi Lake, located in the southwest of Shandong Province, China. Water quality has a significant impact on the safety of the South-...
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Ecological and photosynthetic characteristics of Carex schmidtii with respect to hydrological fluctuations J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-10-19 Dongjie Zhang, Xuepeng Liu, Shiya Gao, Cheng Liu, Yuan Xin, Tongxin Wang, Mingye Zhang, Shouzheng Tong
Hydrological fluctuations are key abiotic stresses that influence plant growth and photosynthetic processes of wetland plants. However, the response mechanism of the plant characteristics and photo...
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Spatial and temporal pattern of benthic macroinvertebrate assemblages in two large Chinese freshwater lakes subjected to different degrees of eutrophication J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-10-06 Lei Ji, Yaru Wang, Qiansen Wang, Wendong Chen, Boyu Zhang, Jinkun Chu, Yuansong Ding, Haoyu Shi, Zihan Cao, Liangbin Wang, Kun Zhang, Wenping Wang
Freshwater lakes are subjected to increasing eutrophication and algal blooms worldwide, which have dramatically impacted the aquatic biodiversity. This situation is especially true in the Yangtze R...
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Taxon-specific effects of seasonal variation and water connectivity on the diversity of phytoplankton, zooplankton and benthic organisms in urban wetland J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-09-30 Jingwen Hu, Lei Hua, Aiju You, Lin Chen, Zeqi Xu, Ziming Wang, Wei Zhang, Congcong Zhang, Genting Yu, Wenjia Tang
Climate change and human activities have altered the water environment and affected the community structure of aquatic organisms. Few studies have focused on the specific responses of multiple aqua...
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Groundwater impacts on stream biodiversity and communities: a review J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-09-26 Emma Land, Chelsea N. Peters
Groundwater discharge into streams influences the biodiversity and health of groundwater-dependent stream ecosystems. These localized upwelling zones may act as biodiversity hotspots, or areas with...
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Optimization of the Korean river macroinvertebrate prediction and assessment System (KRIMPAS) for the biological assessment of rivers J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-08-31 Jeong-ki Min, Jeaha Song, Dongsoo Kong
Abstract The biotic community predictive model proposed in the River Invertebrate Prediction And Classification System which compares observed values at test sites with expected values in reference sites is used to perform biological assessments of rivers. In 2021, a Korean River Macroinvertebrate Prediction and Assessment System (KRIMPAS) for river integrity assessment was developed. However, since
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Comparison of age and growth of grass and silver carp above and below Changzhou Dam in the Pearl River, China J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-08-31 Yanfei Huang, Yue Liu, Yaqin Yang, Cong Yu, Minghao Hu, Jie Li
Abstract The life cycles of potamodromous fishes are generally interrupted by the presence of a dam, and populations often display different life history traits between upstream and downstream. This study compared the age and growth rates of grass carp and silver carp above and below Changzhou Dam in the Pearl River. Standard length (SL) composition and back-calculated SL at ages one and two years
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Characterization of fish assemblages in eleven multi-use reservoirs from North Carolina, USA J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-08-10 Stephen W. Parker, Tyler Steven Coleman, Andrew K. Carlson, Jesse R. Fischer
Abstract Managing impounded river systems is a recurring challenge for aquatic resource professionals because reservoirs serve multiple functions with different ecological and socioeconomic outcomes. However, research on fishes in reservoirs has disproportionally focused on recreationally and economically important species, with less attention directed toward fish assemblages despite the potential
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Evaluation of the distribution of N, P and organic matter in sediment and the pollution status of Lakes in southeastern Hubei Province, China J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-08-10 Xiaowen Lin, Chao Wu, Xiaodong Wu, Xuguang Ge, Zhenni Gao, Xiaoxia Li, Wenting Liu, Shuang Peng
Abstract Eutrophication caused by nutrients and organic matter (OM) pollution is a common problem in the world. The contents of total nitrogen (TN), total phosphorus (TP) and OM in sediments were determined in four typical lakes in southeastern Hubei, China, in the spring of 2019, and their pollution status was evaluated by organic and comprehensive pollution indexes to identify pollution sources and
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Chloride and phosphorus retention and release in soils surrounding a salt-contaminated lake in West Michigan J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-07-30 Jacquelyn Molloseau, Alan D. Steinman
Abstract Salinization in freshwater ecosystems has become an increasingly prevalent issue. Past studies indicate that increased salinity levels in lakes can impact biota, stimulate internal nutrient loading, and prevent seasonal turnover, potentially resulting in impairment to the lake ecosystem. Salt retention in soils and groundwater causes elevated salt concentrations in fresh water long after road
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Role of trace metal co-limitation in cyanobacterial blooms of Maumee Bay (Lake Erie) and Green Bay (Lake Michigan) J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-06-28 James H. Larson, Keith A. Loftin, Erin A. Stelzer, David M. Costello, Sean W. Bailey, Mary Anne Evans, Carrie E. Givens, Lisa R. Fogarty
Abstract The open waters of large lakes can sometimes become so depleted in important metals that phytoplankton communities become either growth limited or limited in some metabolic function. Metals such as Fe, Ni, Mo, and Zn are used as co-factors for enzymes by phytoplankton in core metabolic functions, as well as metabolic pathways that allow phytoplankton to use less preferred forms of N and P
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Predicting phytoplankton assemblages growth and estimating critical N: P ratios with experimental nutrient additions in a drinking water reservoir of central China J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-06-23 Guojia Huang, Xiaoqing Wang, Long Deng
Abstract The purpose of this study was to evaluate the effects of limiting nutrients and the N: P ratios on the growth of phytoplankton. In this study, we used the nutrient enrichment bioassays (NEB), Multivariate analysis of variance, and regression analysis. The results showed that the affected change of phytoplankton assemblages growth was the concentrations of nitrogen and phosphorous. During the
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Spatial and temporal variations in the environmental and biological characteristics of the Turyanchay River basin, Azerbaijan J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-06-21 Saleh Aliyev, Shabnam Farzali, Ömerhan Dürrani
Abstract This is the first comprehensive examination of the Turyanchay River in Azerbaijan, focusing on water quality (WQ), contamination, and biodiversity at four different locations: Gabala, Agdash, Udjar and Zardab. The study analysed nutrient (nitrate, ammonium, phosphate) and metal/metalloid (Pb, Cu, Ni, Zn, Mn, Cr, Cd, Fe and Al) contamination levels, as well as the diversity of macrozoobenthos
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Phytoplankton communities and environmental variables as indicators of ecosystem productivity in a shallow tropical lake J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-06-07 Yirga Enawgaw, Solomon Wagaw
Abstract The water quality and ecosystem productivity of a tropical lake in Ethiopia (Lake Arkiet) was evaluated using phytoplankton and environmental factors. This was to ascertaining the lake’s potential for various applications. Phytoplankton communities and some selected environmental variables were collected from two predefined sampling sites (open water and littoral) using a seasonal campaign
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Dietary comparison of age-0 sturgeon (Scaphirhynchus sp.) between upper and lower Missouri River basins J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-06-05 Alin González, James M. Long, Nathan J.C. Gosch, Anthony P. Civiello, Todd R. Gemeinhardt, Jerrod R. Hall, Patrick J. Braaten
Abstract Understanding potential limiting factors affecting population growth of the endangered pallid sturgeon, Scaphirhynchus albus, is important in the upper (UMOR) and lower Missouri River (LMOR) basins. The UMOR is upstream of several reservoirs and generally has more natural habitat features, whereas the LMOR is downstream of these reservoirs and has been channelized to support navigation. In
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Time-series ARIMA modelling of the Labeobarbus spp (Cyprinidae) fishery in water hyacinth-infested and non-infested sites in Lake Tana, Ethiopia J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-05-29 Brehan Mohammed Yesuf, Abebe Getahun, Seyoum Mengistou, Glenn Wilson, Wassie Anteneh, Wuletawu Abera
Abstract Ethiopia’s largest freshwater lake, Lake Tana, is home to 21 endemic fish species, the majority of which are cyprinids in the genus Labeobarbus. The lake is undergoing numerous ecological changes, including an invasion of water hyacinth (Eichhornia crassipes (Mart.) Solms (WH). The aim of this study was to predict the future fish productivity in Lake Tana by considering the increasing water
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Seasonal starch allocation of starry stonewort (Nitellopsis obtusa) growing in Lake Koronis, MN J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-05-17 Alyssa M. Haram, Ryan M. Wersal
Abstract Starry stonewort (Nitellopsis obtusa) (Desvaux in Loiseleur) J. Groves is an invasive macro alga that can take over entire water columns and outcompete native species. Previous research has quantified seasonal life history and phenology but there is no research quantifying carbohydrate allocation. The current study utilized samples harvested from Lake Koronis, Minnesota, USA from 2020 and
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Comparison of the phytoplankton community compositions between the temperate reservoir and the downstream river areas of the Han River, Korea J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-05-09 Yeon-Su Lee, Taehee Kim, Buhari Lawan Muhammad, Jang-Seu Ki
Abstract Phytoplankton communities serve as useful bioindicators of environmental changes in aquatic ecosystems and can be used to assess the health of freshwater systems. Their community composition responds sensitively to changes in habitat conditions. As a result, the phytoplankton dynamics of the freshwater reservoir may differ from those of the downstream river. In the present study, we conducted
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Study on the effect of water level on phenotypic plasticity of Artemisia selengensis J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-05-04 Xiaojia Tang, Zhenxuan Li, Na Guan, Yun Cao
Abstract The growth, development, distribution, and dynamic processes of wetland plants are altered by water level fluctuations, which can even have an impact on the structure and stability of wetland ecosystems. In this research, the experiment was conducted to investigate the plasticity difference and adaptability of Artemisia selengensis under special hydrological situations by simulating three
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Global negative effects of drought on instream invertebrate communities J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-04-25 Qiao Yang, Verónica Ferreira, Qiqian Wu, Petr Heděnec, Ji Yuan, Chaoxiang Yuan, Yan Peng, Fuzhong Wu, Kai Yue
Abstract Global climate change has led to more frequent and severe droughts, which can negatively affect instream invertebrate communities, but we lack a perspective on the global patterns and drivers of such drought effects. Here, using meta-analysis, we synthesized 997 paired observations extracted from 94 peer-reviewed publications to assess how drought affects the biomass, density, taxonomic richness
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Distribution pattern of the Zebra Mussel (Dreissena polymorpha) in White Bear Lake, Minnesota: a spatial scale analysis J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-04-24 Daniel J. Hornbach, Jessica L. Kozarek, Naomi Blinick, Mark C. Hove, Paul Grams, Matt Kaplinski, Kelly R. MacGregor, Chris Milliren, Andrew T. Riesgraf
Abstract Zebra Mussels (Dreissena polymorpha) were introduced into the US in the 1980s and have since spread throughout the country with concomitant impacts on aquatic ecosystems. We placed 20 m transects in a variety of sediment types and collected data on sediment size, mussel coverage (the percent of the bottom covered by mussels), and the presence of macrophytes within 0.25 m2 quadrats in White
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Long-term changes in unionid community in Kentucky Lake: Implications for understanding the effects of impoundment on river systems J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-04-24 Beatrice M. Bock, Simon A. F. Darroch, Michelle Casey
Abstract Freshwater mussels are both critically important in their ecosystems and rapidly declining around the world. Damming is a key reason for this decline in many locations because it affects the flow and turbidity of river systems, leading to numerous detrimental effects on benthic communities. Although the ecological effects of impoundment have been well studied on timescales ranging from years
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Factors associated with extirpation of the last Northern Sunfish (Lepomis peltastes Cope, 1870) population in western New York State, USA J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-04-10 James M. Haynes, David Sanderson-Kilchenstein, Jose A. Andres, Douglas M. Carlson, Jeremy J. Wright, Bryan R. Weatherwax, Jacques Rinchard
Abstract The Northern Sunfish (Lepomis peltastes Cope, 1870) is threatened in New York state, USA, but this was not the case before 1940 when the NY Biological Survey documented the species at scattered, specialized habitats in six watersheds in the central and western parts of the state. After 1940 the historic populations could not be detected, but a new population was discovered in 1974 in lower
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An application of maximum entropy model to evaluate the differential effect of cage aquaculture on the distribution of a native and an endemic fish species in Lake Maninjau, Indonesia J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-03-25 Ivana Yuniarti, Klaus Glenk, Safran Yusri, Sutrisno
Abstract Physical cage aquaculture structure can attract native fish species in marine and freshwater ecosystems. Most studies on the effects of cage farms on native fish distribution have been undertaken in marine environments and outside of Asia as the main freshwater cage aquaculture producing region. Many studies have emphasised connections between native fish distribution and feeding time. Previous
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Zooplankton community structure in relation to environmental variables in a tropical endorheic Soda Lake Shala, Ethiopia J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-03-12 Solomon Wagaw, Seyoum Mengistou, Abebe Getahun
Abstract Lake Shala, endorheic Soda Lake in the Ethiopian Riftvally Lake, supports an enormous biodiversity, with a large human population and economic development. However soda lakes are under several ecological changes, with unexpected shifts in biodiversity composition and physicochemical changes. This study focuses on assessing the community structure of zooplankton in Lake Shala. Samples were
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Distinct responses in sexual reproduction onset and growth of Chara braunii Gmelin to light level and temperature: evidence from a greenhouse experiment J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-03-10 Heyun Wang, Yi Zhou, Rui Hu, Kuang Chen, Junge Chen
Abstract The importance of oospores in the ecology and life cycle of annual charophyte species is now widely recognized. To elucidate the primary factor that determines the timing (onset) of sexual reproduction, a controlled 3 × 2 factorial experiment with various light levels (100%, 50% and 10% of natural irradiance) and temperatures (25 °C and 20 °C) was conducted to assess their interactive effects
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Evaluating the potential role of predation by native fish regulating the abundance of invasive spiny water flea J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-03-09 Benjamin E. Martin, Joseph T. Mrnak, M. Jake Vander Zanden
Abstract Predation by native predators can hinder the success of an invasive species. Bythotrephes, an invasive zooplankton species, established in Trout Lake, Vilas County, Wisconsin, USA, in 2014. However, by 2020, Bythotrephes densities dropped to densities where they were barely detectable. Cisco (Coregonus artedi), a native zooplanktivore, is an abundant fish species in Trout Lake and has been
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Flow discharge impacts competition for food and shelter between two overlapping species of crayfish J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-02-23 Sophia Adami-Sampson, Madison J. Wagner, Paul A. Moore
Abstract Competition between aquatic organisms is heavily influenced by abiotic factors in the environment, specifically flow regime in aquatic systems. Flow regime has been shown to significantly affect the way in which a species uses the environmental resources and alterations in flow can exasperate competitive advantages by congenerics. However, little work has concentrated on the competitive outcome
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Composition of epilithic diatom and soft-algal assemblages in infralittoral zones of Tennessee reservoirs and correlations of composition to trophic state J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-02-23 Jefferson G. Lebkuecher, Jenna L. Atma, Hailey Conn, Daniel J. Redwine
Abstract Assemblages of infralittoral periphytic algae are understudied due partially to the historical emphasis on phytoplankton and other water-column characteristics to evaluate the integrity of lentic systems. We tested the null hypothesis that characteristics of epilithic algal assemblages at infralittoral sites in reservoirs of Middle and East Tennessee do not infer trophic state. One infralittoral
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eDNA metabarcoding revealed the seasonal and spatial variation of phytoplankton functional groups in the Chai river and their relationship with environmental factors J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-02-16 Jiacheng Lv, Yuanyuan Lin, Zheng Zhao, Xiaohua Zhou
Abstract Environmental DNA (eDNA) metabarcoding permits a new measurement to monitor biodiversity in aquatic ecosystems. This study utilized eDNA metabarcoding to examine the seasonal and spatial distribution of phytoplankton and their relationship with environmental factors in the Chai River, Kunming, China, in the dry, and wet seasons. The process detected 108 genera of phytoplankton, which were
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Effects of land use on water quality at different spatial scales in the middle reaches of Huaihe River J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-02-15 Ming Mu, Liangmin Gao, Haiqiang Zhang, Juan Ge, Zhen Zhang, Yuhui Qiu, Xinglan Zhao
Abstract The impact of land use on water quality is spatially scale-dependent. Exploring the relationship between land use pattern and river water quality provides an important basis for water quality safety and land planning. This study explores the effect of land use patterns on surface water quality using land use data and water quality data of 16 sampling points in the middle reach of the Huai
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How does aquaculture activity affect phytoplankton functional groups in Gaoyou Lake, China J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-02-13 You Ge, Xiaohong Gu, Zhigang Mao, Huihui Chen, Qingfei Zeng, Huiting Yang
Abstract Aquaculture in lakes is an important human activity that could accelerate eutrophication. Its impacts on aquatic ecosystems have attracted extensive attention. This study was carried out in Gaoyou Lake, China. We investigated environmental variables and phytoplankton in areas with different aquaculture intensities over four seasons. Marked differences in diversity, biomass and phytoplankton
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Study on the water level ecological amplitude of the wetland plant Triarrhena lularioriparia J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-02-03 Na Guan, Xiaojia Tang, Minli Xu, Yun Cao
Abstract Water level plays an important role in the growth and development of wetland plants. To study the ecological responses of the growth and physiology of Triarrhena lularioriparia under different water levels, seedlings were used as the study materials and in 13 water level gradient treatment groups, −67, −54, −42, −34, −29, −16, −3.5, 10, 20, 30, 40, 50, 60 cm. The results showed that (1) the
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An evaluation method for the priority protection of fishes based on multiple ecological dimensions J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-01-30 Siwei Liu, Wanchun Luo, Liyan Ge, Yanpeng Wang
Abstract It’s essential to identify the priority conservation species in the habitat restoration and biodiversity conservation. Generally, people select the valuable fishes or the commercial fishes as target species in basins, according to experts’ experience rather than the scientific evaluation. With the influence of urban development, construction of water conservancy facilities and human activities
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Effects of trace elements on benthic macroinvertebrate distribution in the sediments of two rivers in the Olifants River Basin, South Africa J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-01-30 Abraham Addo-Bediako
Abstract Many freshwater ecosystems are facing ecological challenges such as influx of trace elements from human activities, and sediments behave as a sink for trace elements in these environments. Trace element contamination in river sediments is a major environmental concern due to its devastating effect on benthic organisms. The aim of this study was to assess the effect of trace elements in sediments
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Role of environmental variables and seasonal mixing in dynamics of the phytoplankton community in a Tropical Highland Lake Ardibo, Ethiopia J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-01-25 Adem Mohammed, Seyoum Mengistou, Tadesse Fetahi
Abstract This study aimed to assess the spatial and seasonal variations of the phytoplankton community in response to environmental variables in Lake Ardibo. The study was done from October 2020 to September 2021 and physicochemical parameters such as water temperature, pH, dissolved oxygen, electrical conductivity, turbidity, alkalinity, Secchi-depth, nitrate, ammonium, silicon dioxide, soluble reactive
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Study on the quality and symbiotic microbial composition of Artemia nauplii in three main producing areas J. Freshw. Ecol. (IF 1.3) Pub Date : 2023-01-19 Yang Xu, Haihua Cheng, Jilun Meng, Binpeng Xu, Xilian Li, Peijing Shen, Zhenyuan Huang, Qiang Gao
Abstract Artemia nauplii are high-quality biological feed for aquatic animal breeding, and its quality determines the effectiveness of breeding. The aim of this study was to explore the quality and symbiotic microbial composition of nauplii in different areas. The dormant eggs of Artemia nauplii from Kulundan Lake in Russia, Aibi Lake in Xinjiang, and salt fields in Bohai Bay were selected for incubation
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Modelling the effect of tourism disturbance on hatching rate of the Chinese giant salamander (Andrias davidianus) by using artificial neural network J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-11-14 Mijia Zhu, Ruting Tian, Xianqing Yin, Shouliang Luo, Qinghua Luo
Abstract The endangered Chinese giant salamander (Andrias davidianus) is an endangered species among the conserved Chinese amphibians. Tourism-related pressures have increased for this species recently. The effect of tourism on the hatching rate of the target species was determined by experimentally observing the influences of different intensities of tourism disturbance on salamander in the Zhangjiajie
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Microhabitat use of larval fish in a South Carolina Piedmont stream J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-11-13 Luke M. Bower, Brandon K. Peoples
Abstract Understanding habitat use and nursery areas of larval fish is a key component to managing and conserving riverine fishes. Yet, freshwater researchers often focus only on adult fishes, resulting in a limited understanding of the habitat requirements for the early life stages of freshwater fishes. The goal of this study was to quantify the larval fish microhabitat use of three fish families
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Distribution of Miathyria marcella larvae (Odonata: Libellulidae) and water quality of wetlands in Northern Colombia J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-11-01 María Moreno Pallares, María A. Bonilla Gómez, Gabriel Guillot Monroy, Ana C. Torregroza-Espinosa
Abstract This study aims to assess the physicochemical characteristics regulating the distribution and abundance of M. marcella larvae in six wetlands in the northern Colombia. Standardized techniques for collecting invertebrate and physicochemical data were used in 29 sampling points in an intraannual period. Mean pH and temperature oscillated in narrow ranges within wetlands (7.7 ± 0.09–8.6 ± 0.07;
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The effects of temperature and host-parasite interactions on parasite persistence in a planktonic crustacean J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-10-26 Joana L. Santos, Dieter Ebert
Abstract Although the outcome of parasitic infections can be explained by a combination of environmental and host/parasite genetic factors, these factors are often confounded by geography. Thus, linking temperature, a locally variable environmental factor, with host and parasite genetics can reveal complex spatial host-parasite interactions. We used Daphnia magna genotypes from Central Europe, where
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A comparison of fish communities between coves of varying connection to Harlan County Reservoir, Nebraska J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-10-12 Brian E. Mason, Melissa R. Wuellner, Keith D. Koupal
Abstract Sediment berms of various heights have developed in the mouths of several coves within Harlan County Reservoir due to a combination of sediment deposition and lateral drift of eroded sediments. These berms can isolate coves from the main reservoir if the berm height is greater than the water elevation of the reservoir. Previous research in other reservoirs has shown that fish communities may
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Community characteristics of phytoplankton and eutrophication assessment in Tianjin section, downstream of Haihe River Basin J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-09-26 Yong Dou, Wen L. Zhou
Abstract With the aim of exploring the features of the phytoplankton community and eutrophication status in the lower reaches of the Haihe River Basin near Tianjin, sampling surveys were carried out in May, July and September of 2021. The results showed 53 dominant phytoplankton species in the survey area, of which 36 species were found in May, while 28 were found both in July and September. Ten dominant
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The response of benthic diatom community to anthropogenic eutrophication of a river basin under agricultural influence in NE China J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-09-21 Xinxin Lu, Tian Lou, Tao Shan, Yan Liu, Yawen Fan
Abstract Anthropogenic eutrophication has universally threatened river ecological health and has been a key issue in river conservation. Agricultural sewage, which leads to increased nutrient levels and results in the loss of ecological function and biodiversity, results from the growth of agricultural activity and human populations. Consequently, attention has increasingly been focused on developing
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Combined effects of temperature and algal density on the life history characteristics in Brachionus angularis and Keratella Valga J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-09-21 Xiao-Ping Xu, Kai-Yan Tao, Xiao-Fan Yang, Bin-Bin Li, Chang-Shuang Zhao, Yu-Hu Guo
Abstract Temperature and food density are the most important factors influencing the population dynamics of rotifers. In the present study, the effects of temperature and food concentration on the developmental durations, egg ratio, and life-table demography in Brachionus angularis and Keratella valga were studied at four temperatures (15 °C, 20 °C, 25 °C and 30 °C) and four food levels (0.5 × 106
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An assessment of aquatic amphibian biodiversity on the California Lost Coast J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-09-05 E. McAlpine-Bellis, L. Thayer, M. E. Berberich, M. C. Bouffard, B.R. Hudgens
Abstract One of the most difficult aspects of studying intact amphibian communities is that they tend to occupy isolated areas within inaccessible terrain—factors that both protect watersheds from development and disturbance while also making them difficult to study. We conducted an extensive survey of the freshwater herpetofauna of the remote King Range National Conservation Area in Northern California
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Effect of sewerage development on water quality and invertebrate assemblages in a Japanese river over the long term J. Freshw. Ecol. (IF 1.3) Pub Date : 2022-09-01 Satrio Budi Prakoso, Kenta Fukusaki, Wataru Ueda, Yo Miyake
Abstract River water degradation arising from wastewater effluents is a major factor contributing to the deterioration of river ecosystems; yet direct evidence of the beneficial influence of long-term sewerage development on such ecosystems is scarce at a basin scale. The present study, over 12 years, examined changes in sewerage connection rate, water quality, and invertebrate assemblages at 10 study