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Mapping wetland habitat health in moribund deltaic India using machine learning and deep learning algorithms 利用机器学习和深度学习算法绘制印度奄奄一息的三角洲湿地生境健康状况图
IF 2.7 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-07-01 DOI: 10.1016/j.ecohyd.2024.02.005
{"title":"Mapping wetland habitat health in moribund deltaic India using machine learning and deep learning algorithms","authors":"","doi":"10.1016/j.ecohyd.2024.02.005","DOIUrl":"10.1016/j.ecohyd.2024.02.005","url":null,"abstract":"<div><p>Researchers have increasingly integrated machine learning (ML) and deep learning (DL) algorithms to forecast the risk, vulnerability, and susceptibility of various geo-environmental challenges. However, to the best of our knowledge, there is a dearth of studies that have employed DL to predict the health status of wetland habitats, and none have explored a comparative analysis between ML and DL models in this context. This study aims to fill this gap by focusing on the development of wetland habitat health status using both ML and DL models, seeking to determine whether DL models exhibit superior predictability compared to ML models. The assessment of wetland habitat health status reveals that smaller fringe wetlands situated away from main rivers tend to be identified as poor habitats. The transition from phase II to III is marked by a substantial reduction in wetland area, decreasing from 438.76 km<sup>2</sup> to 235.68 km<sup>2</sup><span> across different habitat zones, underscoring the significant loss of wetland areas. The observed 43–46 % decline in very poor and poor habitat areas from phase II to III lends credibility to the predictive capabilities of the models. Notably, among the applied ML and DL models, XGB from the ML category and DNB from the DL category have demonstrated superior performance. In all instances, DL models outperformed ML models, suggesting that deep learning algorithms hold promise for evaluating wetland habitat health status. The mapping and modelling of wetland habitat health status at a spatial scale are pivotal for formulating effective wetland management<span> strategies. The identification of areas with poor and good habitat health provides valuable information for prioritized planning and targeted wetland restoration efforts.</span></span></p></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140047775","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
Corrigendum to “The paradox of increased runoff with decreased soil loss with growth of Acacia decurrens plantations in the highlands of Ethiopia” [Ecohydrology & Hydrobiology 24/1 (2024) 73–86] 埃塞俄比亚高原相思树种植园的生长导致径流增加而土壤流失减少的矛盾"[生态水文学与水生物学 24/1 (2024) 73-86] 更正
IF 2.7 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-07-01 DOI: 10.1016/j.ecohyd.2024.02.010
{"title":"Corrigendum to “The paradox of increased runoff with decreased soil loss with growth of Acacia decurrens plantations in the highlands of Ethiopia” [Ecohydrology & Hydrobiology 24/1 (2024) 73–86]","authors":"","doi":"10.1016/j.ecohyd.2024.02.010","DOIUrl":"10.1016/j.ecohyd.2024.02.010","url":null,"abstract":"","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1642359324000326/pdfft?md5=a38ec0d8abdbc39a830c231fccadfcd0&pid=1-s2.0-S1642359324000326-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140167349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Microbial composition and formation of biofilms in agricultural irrigation systems- a review 农业灌溉系统中的微生物组成和生物膜的形成--综述
IF 2.7 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-07-01 DOI: 10.1016/j.ecohyd.2023.10.004
{"title":"Microbial composition and formation of biofilms in agricultural irrigation systems- a review","authors":"","doi":"10.1016/j.ecohyd.2023.10.004","DOIUrl":"10.1016/j.ecohyd.2023.10.004","url":null,"abstract":"<div><p>Microbial contamination of water, as well as the development of biofilm in irrigation systems, is one of the factors contributing to water losses, leading to a decrease in the optimization of the irrigation process and, consequently, a decrease in plant production. Water shortages are a highly undesirable phenomenon, particularly within the context of anthropogenic climate changes and the constraint of potable water resources. Biofilm can also be a reservoir of pathogenic microorganisms for human health, animal welfare, and plant production. Contaminated water used to irrigate vegetables that do not require heat treatment can lead to pathogen propagation, causing disease outbreaks. Therefore, it is essential to understand the dynamics of biofilm development and its underlying mechanisms, as well as its relation to water quality, to develop strategies that could help reduce or prevent biofilm formation and its negative effects. The analysis of factors promoting the development and composition of biofilm in irrigation systems allows the implementation of the most effective preventive methods, which translate into the optimization of the irrigation process and plant production. This paper aims to analyze reports related to the formation and microbial composition of biofilms occurring in agricultural irrigation systems, as well as to present the risks associated with biofilm formation and methods for its eradication. This review summarizes reports related to the various factors influencing biofilm formation and irrigation water quality, which may be a prelude to a comprehensive assessment and formulation of guidelines related to the management of water-based irrigation systems to improve biosafety.</p></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135761615","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
Biofilm formation in the drinking water distribution system, on selected pipe materials in flow reactors – preliminary investigations 流动反应器中选定管道材料上的饮用水输水系统生物膜形成--初步研究
IF 2.7 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-07-01 DOI: 10.1016/j.ecohyd.2024.06.001
{"title":"Biofilm formation in the drinking water distribution system, on selected pipe materials in flow reactors – preliminary investigations","authors":"","doi":"10.1016/j.ecohyd.2024.06.001","DOIUrl":"10.1016/j.ecohyd.2024.06.001","url":null,"abstract":"<div><p><span>This study analysed the formation of biofilms in the drinking water distribution system in Wroclaw. The focus was on the influence of the material from which pipes in water distribution systems are built: polyethylene (PE) and </span>polypropylene<span><span> (PP). Two reactors with continuous water flow were used. Once the quasi- steady state was determined, an analysis was carried out to measure the total number of microorganisms per unit volume, which were stabilised without affecting further changes in concentration, and to study the basic physicochemical parameters of water that can affect the microbial growth<span> that forms. In addition, a literature review was conducted to analyse biofilm formation based on physicochemical parameters in the water distribution system. Psychrophilic bacteria were shown to be more numerous than mesophilic bacteria, with the growth rate of the latter being higher. An increase in the number of microorganisms was observed, with higher concentrations found on PE surfaces because the rougher surface structure provides better adhesion for biofilm-forming microorganisms than on a surface made of </span></span>polypropylene (PP). The presence of mesophilic bacteria may indicate the potential for pathogenic microorganisms, as well as the formation of a primary biofilm characterised by irreversible attachment to the substrate. These findings suggest that synthetic materials such as PE are more susceptible to biological growth than polypropylene (PP) as a result of their uneven surface structure, which facilitates the deposition of biofilm-forming organisms. The preliminary results can be used as an important reference for future research related to biofilms in drinking water distribution systems.</span></p></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141710001","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
Occurrence of microplastics in commercial fishes from aquatic ecosystems of northern Poland 波兰北部水生生态系统中商业鱼类体内微塑料的发生率
IF 2.7 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-07-01 DOI: 10.1016/j.ecohyd.2023.12.005
{"title":"Occurrence of microplastics in commercial fishes from aquatic ecosystems of northern Poland","authors":"","doi":"10.1016/j.ecohyd.2023.12.005","DOIUrl":"10.1016/j.ecohyd.2023.12.005","url":null,"abstract":"<div><p>The presence of microplastics (MP) in the organs of five fish species caught in the freshwater reservoirs of northern Poland was evaluated. Gills, liver, and digestive tracts of several commercial fish species such as common perch, silver Prussian carp<span><span>, roach, and rainbow trout<span> were tested to assess MP uptake due to their high population size<span> as well as they play significant role as biomonitors. Since the mentioned species are gladly consumed they can be considered as a source of MP for humans. MP items were identified in all fish species. The highest contribution of MP was observed in predatory fish such as rainbow trout and perch. None of the correlations between MP abundance and fish </span></span></span>body size<span>. The number of items per individual fish ranged from 1 to 12, with an average of 1.78. Among the investigated MP shapes two types were found: fibers (56 %) and particles (44 %). MP were observed in different organs, such as the gills (50 %), liver (11 %), and digestive tract<span> (39 %). The most dominant color observed was blue (58 %). The dominant size range was 1–5 mm (42 %), and 0.1–0.5 mm (42 %) respectively. The FT-IR characterization revealed the presence of polymers predominantly containing polyethylene, polypropylene<span>, polyacrylic acid<span>, cellophane<span>, and polystyrene.</span></span></span></span></span></span></p></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139510087","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
A bibliometric analysis of the invertebrates inhabiting the hyporheic zone: Too fragmented and biased knowledge? 对栖息在底流区的无脊椎动物进行文献计量分析:知识过于零散和偏颇?
IF 2.6 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-05-28 DOI: 10.1016/j.ecohyd.2024.05.002
Daiana Pascuale, Nicolas A. Garello, Martín C.M. Blettler, Ana Pía Rabuffetti, Luis A. Espinola
{"title":"A bibliometric analysis of the invertebrates inhabiting the hyporheic zone: Too fragmented and biased knowledge?","authors":"Daiana Pascuale, Nicolas A. Garello, Martín C.M. Blettler, Ana Pía Rabuffetti, Luis A. Espinola","doi":"10.1016/j.ecohyd.2024.05.002","DOIUrl":"https://doi.org/10.1016/j.ecohyd.2024.05.002","url":null,"abstract":"This study explores the publishing patterns concerning invertebrates inhabiting the hyporheic zone (HZ), a topic indexed by Scopus. This review was then used to investigate the patterns and biases of scientific articles in multiple aspects such as the temporal progress of HZ-ecology studies from 2000 to 2024, geographical areas of research vacancy, sampled river, substrate type present, location (country and continent), methodological techniques and the main ecological themes addressed by authors. We detected that HZ field studies are fragmented across continents and absent in many geographical areas. Besides, we identified unjustified tendencies in the sampler selection and the lack of an international sampling protocol. In a similar way, we noticed that sampling depth and the net size to filter organisms are not normalized yet, making difficult (if not impossible) direct comparisons between different studies and regions. Finally, we suggest that the ecological knowledge of the HZ invertebrate community is still predominantly descriptive and basic in many cases. We encourage researchers to standardize a sampling protocol, to enlarge more HZ studies covering geographical areas of vacancy, to test ecological hypothesis and to use this community in applied ecology studies (ex. biomonitoring studies).","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509149","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
Climate and land use changes impacts on streamflow in the Brazilian Cerrado basin 气候和土地利用变化对巴西塞拉多盆地溪流的影响
IF 2.6 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-05-28 DOI: 10.1016/j.ecohyd.2024.05.004
Lorena Lima Ferraz, Lucas Farias de Sousa, Raildo Mota de Jesus, Kananda Andrade Costa, Carlos Amilton Silva Santos, Felizardo Adenilson Rocha
{"title":"Climate and land use changes impacts on streamflow in the Brazilian Cerrado basin","authors":"Lorena Lima Ferraz, Lucas Farias de Sousa, Raildo Mota de Jesus, Kananda Andrade Costa, Carlos Amilton Silva Santos, Felizardo Adenilson Rocha","doi":"10.1016/j.ecohyd.2024.05.004","DOIUrl":"https://doi.org/10.1016/j.ecohyd.2024.05.004","url":null,"abstract":"This study evaluated the effects of climate change and land use (LULC) on the discharge regime of a watershed located in the Brazilian Cerrado. The SWAT model was calibrated and validated in three different periods: period 1 (LULC of 1990 with meteorological data from 1980 to 1995), period 2 (LULC of 2000 with meteorological data from 1996 to 2005), and period 3 (LULC of 2015 with meteorological data from 2006 to 2015). The statistical coefficients of performance NSE, PBIAS and R² and the flow duration curves for each period of analysis showed that the model is suitable for use in simulations on a monthly scale in the hydrographic basin of the Correntina River. The results show that variations in land use and land cover affect surface flow more intensely than changes in climate, and that the reduction in discharge over the 36 years of the study is due to changes in land use and land cover, in particular the use of water for agriculture. The results of this study show that it is necessary to consider the implications of climate change and land use for decision making, providing information to guide the future management of water resources in a region of intense agricultural activity and with conflicts over water use.","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509150","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
Role of transpiration in modulating ecosystem services in secondary tropical montane forests of Eastern Himalaya in India 蒸腾作用在调节印度东喜马拉雅山热带山地次生林生态系统服务中的作用
IF 2.6 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-04-27 DOI: 10.1016/j.ecohyd.2024.04.001
Manish Kumar, Yangchenla Bhutia, Girish R Varma, Gladwin Joseph, Jagdish Krishnaswamy
{"title":"Role of transpiration in modulating ecosystem services in secondary tropical montane forests of Eastern Himalaya in India","authors":"Manish Kumar, Yangchenla Bhutia, Girish R Varma, Gladwin Joseph, Jagdish Krishnaswamy","doi":"10.1016/j.ecohyd.2024.04.001","DOIUrl":"https://doi.org/10.1016/j.ecohyd.2024.04.001","url":null,"abstract":"Secondary tropical forests provide critical hydrological services through modulating transpiration and soil infiltration of precipitation. However, vegetation studies establishing direct mechanistic linkages between stand transpiration, soil moisture and streamflow are significantly lacking in tropical montane forests (TMFs) in Himalaya. We quantified the impact of diel and seasonal transpiration on catchment water balance and lean season streamflow in a broad-leaved evergreen secondary TMF in Eastern Himalaya. Stand transpiration (T) and streamflow (Q) were measured concurrently at one of the wettest (4500 mm yr) and highest elevation (2100 m) sites worldwide to date. The observed daily transpiration rates (1.29±0.99 mm ) were double the reported values from TMFs in relatively drier Central Himalaya but at the lower bound of TMFs globally. Moderate precipitation pulses (10–25 mm volume) followed by clear skies significantly increased stand transpiration. The proportional contribution of evaporative losses (50–77%) and stand transpiration (2–13%) to catchment water balance increased with the progression of the wet season. The phase lags between T, soil moisture (S) and Q were confounded by significant pre-dawn sap flux movement and the presence of secondary diel peaks. Transpiration was a significant predictor of streamflow in the dry season and, to a lesser extent, in the wet season. Thus, changes in vegetation cover and precipitation patterns will likely impact hydrological services from the regenerating secondary TMFs and the regional water security in the Eastern Himalaya.","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141168928","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
High altitude may limit production of secondary metabolites by cyanobacteria 高海拔可能限制蓝藻产生次级代谢产物
IF 2.7 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-04-01 DOI: 10.1016/j.ecohyd.2024.03.004
Iwona Jasser , Nataliia Khomutovska , Małgorzata Sandzewicz , Łukasz Łach , Hikmat Hisoriev , Monika Chmielewska , Małgorzata Suska-Malawska
{"title":"High altitude may limit production of secondary metabolites by cyanobacteria","authors":"Iwona Jasser ,&nbsp;Nataliia Khomutovska ,&nbsp;Małgorzata Sandzewicz ,&nbsp;Łukasz Łach ,&nbsp;Hikmat Hisoriev ,&nbsp;Monika Chmielewska ,&nbsp;Małgorzata Suska-Malawska","doi":"10.1016/j.ecohyd.2024.03.004","DOIUrl":"10.1016/j.ecohyd.2024.03.004","url":null,"abstract":"<div><p>Ever-new cyanotoxins are being discovered, with planktic Cyanobacteria being the most studied communities, although records of cyanotoxins from benthic communities are becoming increasingly common. ​​Thus, the latter also started threatening users of water for recreational or drinking purposes. However, vast areas of the globe, i.a. Central Asia, are still understudied in this respect. Our recent study of benthic Cyanobacteria in the mountains of Eastern Pamir (Tajikistan) suggested that cyanotoxin production in high mountain environments is very limited. Here we present further study of Cyanobacteria, cyanotoxins, and other biologically active compounds such as geosmin and 2-Methylisoborneol (MIB) in microbial mats and water above them. Samples were collected in Eastern Pamirs, in UV (7–11) and altitude gradient (1000–4000 m a.s.l.). In the study, we used microscopic and genetic identification of Cyanobacteria based on NGS of V3-V4 16S rRNA amplicon and toxin assays using LC-QTOF-MS. The analyses demonstrated that the studied microbial mats contained potentially toxic Cyanobacteria (<em>Anabaena, Lyngbya, Nostoc, Oscillatoria,</em> and <em>Phormidium</em>). The production of cyanotoxins and taste and odor compounds (T&amp;O) in natural environments was restricted to altitudes up to 3000 m a.s.l. Three water samples at 1000, 2000 and 3000 m a.s.l. contained MIB and/or geosmin, while debromoaplysiatoxin was noted at 2000 m a.s.l. Additionally, two strains (<em>Hillbrichtia pamiria</em> gen. nov. sp. nov. and <em>Nostoc paludosum</em>) isolated from sites at about 4000 m, in which no cyanotoxins or T&amp;O were identified, produced debromoaplysiatoxin and microginin in laboratory conditions. The results suggest that in a stressful environment Cyanobacteria do not produce toxins.</p></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140792293","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
Beavers ecosystem altering: Influence of beaver dams on aquatic invertebrates in newly created beavers ponds and small mountain river 海狸改变生态系统:海狸坝对新建海狸池塘和山区小河中水生无脊椎动物的影响
IF 2.7 4区 环境科学与生态学
Ecohydrology & Hydrobiology Pub Date : 2024-04-01 DOI: 10.1016/j.ecohyd.2023.06.009
Aneta Spyra, Anna Cieplok, Mariola Krodkiewska
{"title":"Beavers ecosystem altering: Influence of beaver dams on aquatic invertebrates in newly created beavers ponds and small mountain river","authors":"Aneta Spyra,&nbsp;Anna Cieplok,&nbsp;Mariola Krodkiewska","doi":"10.1016/j.ecohyd.2023.06.009","DOIUrl":"10.1016/j.ecohyd.2023.06.009","url":null,"abstract":"<div><p>Beaver-created ponds constitute an important element of small water retention in forest catchments and preserving biodiversity as breeding sites for vertebrates and invertebrates. In many areas, these habitats disappear as a result of drainage melioration, drainage formed from agricultural and developmental needs, and liquidation by littering and backfilling. This study was carried out from 2017 to 2019 to understand the transformations of river valley as a result of the beaver activity in the context of newly created ponds and mountain stream and to assess the changes and biodiversity. Beavers modified in-stream habitat by constructing dams, thus creating a series of interconnected dam ponds. Organic matter retention was higher in beaver ponds relative to unmodified river section. In beaver ponds, the invertebrate aquatic assemblages was highly variable. A total of 56 taxa were identified, and significant seasonal variability of benthos assemblages. The values of diversity indices confirmed the instability of benthos assemblage in beaver ponds (variability of species amongst years and sites), which may be related to the short period of their existence. Lotic macroinvertebrate assemblages were common in the beaver-modified section of stream, with some lentic taxa also being present. The unmodified section of stream had more abundant collectors- gatherers and predators and no filter feeders, while scrapers were more abundant in modified section. The environmental variables which significantly influenced invertebrate occurrence were pH, nitrates, iron and the content of organic matter. The results contribute to ecological characteristics of these aquatic environments, and enable determining their functioning in forest areas.</p></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131196960","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
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