Limnologica最新文献

{"title":"Lability of sedimentary organic nitrogen estimated from amino acids in a reservoir on land reclaimed from Isahaya Bay, Kyushu, Japan","authors":"Hiroyuki Takasu ,&nbsp;Tomoya Era ,&nbsp;Kotaro Miyahara ,&nbsp;Maiko Ito","doi":"10.1016/j.limno.2024.126174","DOIUrl":"10.1016/j.limno.2024.126174","url":null,"abstract":"<div><p>In 1997, the inner part of Isahaya Bay on the west coast of the Ariake Sea was separated from the sea by dikes, leading to the formation of a freshwater reservoir. Since the Isahaya Reclamation Project began in the 1990s, red tides have become more common in the bay. Studies suggested that a non-negligible amount of NH₄⁺ was regenerated from organic matter decomposition in the turbid water drained from the reservoir into the bay, and this drainage water might be an important source of NH₄⁺ for red tides in the bay. Although labile organic matter in the turbid water might also originate from resuspended sediments in the reservoir induced by the drainage process, the potential for the resuspended sedimentary organic matter to serve as an NH₄⁺ source has never been evaluated. In this study, we found that sediments near the drainage gates on the dike in the reservoir contained high levels of amino acids and NH₄⁺. In addition, the NH₄⁺ concentrations were positively correlated with amino acids concentrations. This result can be explained by increasing NH₄⁺ production according to labile organic nitrogen accumulation in the sediments near the dike. The result of our study suggests that the sediment resuspension near the dike induced by drainage might be a source of bioavailable nitrogen for Isahaya Bay.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"106 ","pages":"Article 126174"},"PeriodicalIF":1.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141143439","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}

{"title":"Quantification of large-spatial scale and in-stream factors affecting the structure of benthic macroinvertebrate communities in mountain streams","authors":"Francesca Vallefuoco ,&nbsp;Magdalena Vanek ,&nbsp;Roberta Bottarin ,&nbsp;Alberto Scotti","doi":"10.1016/j.limno.2024.126172","DOIUrl":"10.1016/j.limno.2024.126172","url":null,"abstract":"<div><p>Habitat diversity plays a crucial role in shaping the structure and distribution of benthic macroinvertebrate communities. However, few studies have investigated the concurrent effects of such drivers operating at different spatial scales in mountain streams. Here, we assessed which environmental factors at different spatial scales, related to stream/river type and substrate, influence the diversity of benthic macroinvertebrate assemblages in mountain streams and rivers. Within the framework of the aquatic investigations of the Biodiversity Monitoring South Tyrol (BMS) – a newly-established, regional-based, long-term biodiversity monitoring program – benthic macroinvertebrates and a set of environmental factors describing water quality, stream/river hydromorphology and in-stream habitat characteristics were collected and analysed. The variation in total density, taxonomic richness, Shannon evenness and % Ephemeroptera–Plecoptera–Trichoptera taxa of stream benthic macroinvertebrates was assessed at multi-scale habitat levels, in 48 sampling sites across the mountainous region of the Autonomous Province of Bolzano/Bozen (Italy). The effects of stream/river type, substrates and different environmental factors on community composition of benthic macroinvertebrates were quantified, using a stepfoward Redundancy Analysis (RDA) and generalized additive models (GAMs). In addition, we performed an Indicator Value analysis to detect taxa that were significantly associated with a specific substrate and/or stream/river type. Overall, we observed significant differences in benthic biological metrics among both stream/river and substrate types. We also found at least one indicator taxa for each stream/river type, with environmental factors acting at reach and large-spatial scale – temperature, stream channel stability, elevation – being the key drivers in shaping macroinvertebrate distribution patterns in the analysed mountain rivers. While significant differences in macroinvertebrate community structures were found among substrates, the influence of stream/river type conditions was particularly evident. Apart from ranking environmental variables worth including in a long-term aquatic biodiversity monitoring program in mountain areas, our study provides a baseline for practical applications. For instance, depending on the desired outcome of habitat heterogeneity restoration, it can suggest the optimal scale (landscape vs. reach vs. patch) for prioritizing in-field interventions.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"106 ","pages":"Article 126172"},"PeriodicalIF":1.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0075951124000252/pdfft?md5=356451a68d91ed939df9f0509f2ce260&pid=1-s2.0-S0075951124000252-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141028681","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}

{"title":"Corrigendum to ‘Physico-chemical characterisation of protected lake habitats: A matter of dystrophy’ [Limnologica103, November 2023, 126123]","authors":"Giovanni Cappelli ,&nbsp;Heather T. Lally ,&nbsp;Martin P. Gammell ,&nbsp;Emma Gray ,&nbsp;Cilian M. Roden","doi":"10.1016/j.limno.2024.126161","DOIUrl":"10.1016/j.limno.2024.126161","url":null,"abstract":"","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"106 ","pages":"Article 126161"},"PeriodicalIF":1.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0075951124000148/pdfft?md5=19e20f3f387cbc84f3e90dddd23846fa&pid=1-s2.0-S0075951124000148-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140404341","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}

{"title":"Bias in the shoreline development index: Ecological implications illustrated with an analysis of littoral-pelagic habitat coupling","authors":"D. Seekell ,&nbsp;B.B. Cael","doi":"10.1016/j.limno.2024.126173","DOIUrl":"10.1016/j.limno.2024.126173","url":null,"abstract":"<div><p>We reexamined the relationship between the shoreline development index and metrics of habitat coupling using a bias-corrected variant of the shoreline development index. Our findings suggest that previously reported correlations may be artifacts of scale-dependent bias in shoreline development index measurements. The results highlight the need for careful measurement when seeking to understand links between lake morphology and ecological processes.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"106 ","pages":"Article 126173"},"PeriodicalIF":1.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141140327","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}

{"title":"Influence of seasonal hydrological regimes on benthic macroinvertebrates in two the Brazilian biodiversity hotspots","authors":"Ana Cláudia Garcia Barboza ,&nbsp;Victor Tagliacollo ,&nbsp;Giuliano Buzá Jacobucci","doi":"10.1016/j.limno.2024.126170","DOIUrl":"https://doi.org/10.1016/j.limno.2024.126170","url":null,"abstract":"<div><p>Global warming has changed climate patterns worldwide causing an increase of extreme weather conditions that have altered annual seasonal hydrological regimes. These extreme climate-driven shifts modify habitat availability and can influence freshwater communities in disruptive ways. Our study investigates how changes in annual seasonal hydrological regimes affect the community structure and the Functional Feeding Groups (FFG) of benthic macroinvertebrates in two Brazilian biodiversity hotspots, the Brazilian Tropical Savannas (a.k.a., Cerrado) and Atlantic Forest biomes. We investigate whether annual variation in precipitation between biomes influence composition, richness, and abundance of benthic macroinvertebrates and their proportions of FFG. We demonstrate that differences in annual precipitation rates affect the composition and abundance, but not richness of benthic macroinvertebrates. Changes in community structure are related to changes in annual precipitation, which modify stream variables. Our findings suggest that annual seasonal changes in hydrological precipitation modify benthic macroinvertebrate communities, especially in Cerrado, where dry seasons are more pronounced. Therefore, annual changes in precipitation rates may disrupt the benthic macroinvertebrate communities in tropical savannas, potentially leading to biodiversity loss.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"106 ","pages":"Article 126170"},"PeriodicalIF":1.7,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140646871","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}

{"title":"HPLC validation as a management tool in artificial water storage ponds","authors":"Alfredo Llorente ,&nbsp;Henar Fraile ,&nbsp;Begoña Gartzia de Bikuña ,&nbsp;Sergio Seoane","doi":"10.1016/j.limno.2024.126160","DOIUrl":"10.1016/j.limno.2024.126160","url":null,"abstract":"<div><p>Pigment analysis through high-performance liquid chromatography (HPLC) offers a faster and more replicable study of the phytoplankton community structure than traditional taxonomy, but its application to small-sized freshwater ecosystems is infrequent. We carried out a taxonomy-based validation for the application of HPLC to the management of two artificial water storage ponds. We also investigated the error and variability sources that affected the relationships between calculated biovolumes of phytoplankton groups and associated pigment concentrations. For both qualitative and quantitative approaches, agreement was obtained between techniques that consistently identified biomass peaks and structural trophic differences between the ponds. Considering the most relevant pigment to biovolume ratios for total biomass, and partial biomass proxies of green algae and fucoxanthin containing algae, a decreasing tendency was obtained as total and partial biomass increased in all the studied models. Bidirectional variability affecting these relationships scaled under high biomass conditions and suggested a better suitability of HPLC application under oligotrophic conditions, which is in line with previous studies. Additionally, pigment data was able to identify mean stored volume as the main environmental factor that drove trophic differences between the ponds. We conclude that HPLC is accurate not just for monitoring purposes, but to carry out ecosystem-level assessments in artificial ponds. Therefore, we endorse the use of HPLC as part of the monitoring networks in small-sized freshwater ecosystems.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"105 ","pages":"Article 126160"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140035917","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}

{"title":"Periphyton bioaccumulation and biosorption potential: in-situ experiment in a eutrophic, mixohaline lake ecosystem (Tierra del Fuego, Argentina)","authors":"Amalia Lara Bursztyn Fuentes ,&nbsp;María Luciana Montes ,&nbsp;Patricia Rodríguez","doi":"10.1016/j.limno.2024.126156","DOIUrl":"10.1016/j.limno.2024.126156","url":null,"abstract":"<div><p>Periphyton is gaining relevance in bioremediation of polluted aquatic ecosystems because of its ubiquity and cost-effectiveness. The aim of this work was to study phosphorus and nitrogen bioaccumulation by periphyton grown on artificial substrata as a remediation strategy in two points (EB1 and EB2) in the Encerrada Bay, a mixohaline, eutrophic lake ecosystem in the City of Ushuaia (Tierra del Fuego, Argentina). In addition, the biosorption potential of the harvested periphytic biomass was assessed, using several organic molecules, including an emerging pollutant. Maximum nitrogen (N) accumulation was achieved after 4 months of colonization of the substrata for EB1 and 2 months for EB2 (1185.9 and 645.9 mg N m⁻², respectively). Also, maximum phosphorous (P) accumulation was achieved after 4 months of colonization of the substrata for EB1 and 2 months for EB2 (34.4 and 17.5 mg P m⁻², respectively). Once harvested, the dried biomass could be used in biosorption processes for different organic pollutants, as removal efficiencies were above 80% and 60% for dyes methylene blue and crystal violet, respectively, and almost 40% for the emerging pollutant oxytetracycline. These biosorption results are particularly interesting because it would suggest that it is a promising biomass reutilization strategy in the framework of circular economy.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"105 ","pages":"Article 126156"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139924475","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}

{"title":"Water-filled leaf axils in teasel plants: A study of often overlooked aquatic habitats","authors":"Jozef Oboňa ,&nbsp;Ivana Svitková ,&nbsp;Katarína Fogašová ,&nbsp;Peter Manko ,&nbsp;Michal Rendoš ,&nbsp;Marek Svitok","doi":"10.1016/j.limno.2024.126157","DOIUrl":"10.1016/j.limno.2024.126157","url":null,"abstract":"<div><p>Teasels (<em>Dipsacus</em> spp.) are among the few European plant species that can create small aquatic ecosystems, known as phytotelmata, in their leaf axils. However, these unique environments have received little research attention. We performed the first detailed study of phytotelmata in teasels, aiming to describe the physical habitat and macroinvertebrate communities across different leaf axil levels. We explored 64 phytotelmata on 20 teasel plants in Slovakia (Central Europe). These small aquatic ecosystems contained less than 100 ml of water, exhibited a pH ranging from slightly acidic to neutral, had very low oxygen content, and showed highly variable conductivity. We collected more than 1000 larvae of Diptera, representing at least ten aquatic invertebrate taxa. The dominant species found in these communities were the chironomid <em>Metriocnemus eurynotus</em> (Holmgren, 1883), followed by ceratopogonids of the genus <em>Dasyhelea</em>. The oldest, bottom-situated phytotelmata showed the highest invertebrate density and species richness, suggesting an important role of ecosystem age and the probability of colonization in the community assembly process. These highly replicated ecosystems with simple communities may serve as useful models for studying various ecological phenomena such as metacommunity dynamics, succession, community assembly, biodiversity-ecosystem functioning or mutualistic interactions.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"105 ","pages":"Article 126157"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0075951124000100/pdfft?md5=b056f68e718cde15e82185e1fb07b8e1&pid=1-s2.0-S0075951124000100-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139949769","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}

{"title":"Abrupt diatom assemblage shifts in Lake Baiyangdian driven by distinct hydrological changes and yet more so by gradual eutrophication","authors":"Xin Mao ,&nbsp;Linjing Liu ,&nbsp;Hongmei Zhao ,&nbsp;Yawen Ge ,&nbsp;Gaolei Jiang ,&nbsp;Lei Song ,&nbsp;Kai Ning ,&nbsp;Hua Zhao ,&nbsp;Peng Zhang","doi":"10.1016/j.limno.2024.126155","DOIUrl":"10.1016/j.limno.2024.126155","url":null,"abstract":"<div><p>Lake Baiyangdian, the largest natural freshwater wetland on the North China Plain, has faced multiple stressors from anthropogenic disturbances and climate change, affecting its aquatic ecosystem over the past century. An improved understanding of the relationship between environmental stresses and ecosystem responses and the mechanisms underlying ecological shifts has significant implications for managing the aquatic ecosystem in Lake Baiyangdian. In this paper, we reconstructed the ecological changes in Lake Baiyangdian over the past 70 years based on diatom assemblages in a sediment core and identified ecological shifts by the Sequential t test Analysis of Regime-shifts algorithm (STARS) and a sequential F test. Our results revealed two ecological shifts. The first ecological shift in the diatom community occurred in approximately 1963, which was associated with the rather abrupt changes, i.e., damming in the basin. This hydrological modification prolongs hydraulic residence time and accelerates nutrient retention, consequently leading to an increase in eutrophic species. Subsequently, the second ecological shift occurred in the 1990 s, which was attributed to sustained nutrient loading due to human activity intensification as well as an increase in the regional temperature. Ongoing nutrient loading finally pushed the lake toward a driver threshold, leading to an abrupt shift in the diatom assemblage. Our study details the complex trajectories of aquatic ecosystem shifts driven by hydrological alteration, increasing nutrient loading, and climate change in Lake Baiyangdian and highlights the processes by which ecological shifts occur in response to both abrupt and gradual stressors.</p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"105 ","pages":"Article 126155"},"PeriodicalIF":1.7,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139924645","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}

{"title":"From shady ditches to artificial pools – Does mire restoration benefit aquatic invertebrates?","authors":"Maarja Vaikre ,&nbsp;Margus Voode ,&nbsp;Elin Soomets-Alver","doi":"10.1016/j.limno.2023.126141","DOIUrl":"10.1016/j.limno.2023.126141","url":null,"abstract":"<div><p><span>To combat the loss of wetlands and the services they provide, many are now being restored. Rewetting, usually by ditch blocking, is a common approach to restore drained wetlands, where it can create a supply of permanent artificial pools. We studied how aquatic macroinvertebrate abundance, species richness and communities respond to ditch blocking, and how the new lentic waterbodies contribute to the habitat value of these ‘restored’ ecosystems. The study system was a large before-after-control-impact (BACI) experiment along forested mixotrophic bog edges, where we sampled macroinvertebrates prior to and after the restoration that had created a total of 308 individual pools along former ditch channels. The mean abundance and taxon richness increased similarly in drain-blocked and control ditches between 2015 and 2021 but blocked and control ditches started to host distinct communities. Most pronounced changes were the decrease in the numbers of bivalves and plecopterans and the appearance of vagile species, such as odonatans, </span>hemipterans<span> and certain beetles and flies to blocked ditches, including several characteristic species. Overall, the restoration provided new habitats for aquatic macroinvertebrates, but the convergence of these communities toward natural transitional mire communities remains to be studied.</span></p></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"104 ","pages":"Article 126141"},"PeriodicalIF":1.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138495039","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}