Journal of Great Lakes Research最新文献

{"title":"A reservoir-based approach of the SWAT hydrological model in the Napanee River and Wilton Creek agricultural watersheds, Bay of Quinte","authors":"Aisha Javed,&nbsp;Alex Neumann,&nbsp;Haibin Cai,&nbsp;Carlos Alberto Arnillas,&nbsp;George B. Arhonditsis","doi":"10.1016/j.jglr.2024.102404","DOIUrl":"10.1016/j.jglr.2024.102404","url":null,"abstract":"<div><div>In this study, we employ the Soil and Water Assessment Tool (SWAT), to simulate the hydrological cycle in the Napanee River and Wilton Creek watersheds located in the Bay of Quinte Area of Concern. The geomorphological attributes of the two sites presented challenges in successfully reproducing the observed streamflow with a conceptual model, like SWAT. After adjusting the model inputs and revising the boundary conditions, SWAT performance for the Napanee River model was found to be “very good” within both calibration (Nash-Sutcliffe efficiency, NSE, =0.83 and NSE = 0.87 for the daily and monthly streamflow rates, respectively) and validation (NSE = 0.87 and NSE = 0.91) domains. In contrast, despite the small size of Wilton Creek (∼233 km²) and the lack of permanent or human-regulated dams, the observed streamflow patterns displayed considerably delayed response to extreme precipitation events which posed challenges in achieving satisfactory model performance. Field evidence suggests that model residual variability is driven by excessive surface storage of water, the presence of beaver dams and narrowing of the stream channels under the bridges, which could potentially delay the flow of water for many days. After delineating the areas of flooding and treating them as reservoirs in Wilton Creek, we were able to overcome the modelling challenges with minor modifications in the original SWAT configuration and achieve satisfactory fit for both the calibration (NSE = 0.55 and NSE = 0.73) and validation (NSE = 0.59 and NSE = 0.76) periods. Our study suggests that the reservoirs play a significant role in buffering the impact of extreme flow conditions, especially during the spring freshet</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0380133024001631/pdfft?md5=27434f7907d14defe3f9fbcac885958d&pid=1-s2.0-S0380133024001631-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Assessment of anthropogenic impacts on the trophic dynamics of Babine Lake: Implications for the production of sockeye salmon","authors":"Cécilia Barouillet ,&nbsp;Kathleen R. Laird ,&nbsp;Brian F. Cumming ,&nbsp;Bruce P. Finney ,&nbsp;Daniel T. Selbie","doi":"10.1016/j.jglr.2024.102395","DOIUrl":"10.1016/j.jglr.2024.102395","url":null,"abstract":"<div><div>Babine Lake, British Columbia, is Canada’s largest sockeye salmon (<em>Oncorhynchus nerka</em>) nursery lake, sustaining numerous ecosystem services (e.g., fisheries, recreation, cultural and spiritual benefits). The lake and its watershed have experienced significant anthropogenic and natural disturbances since the early 1900’s, including extensive logging, pine beetle infestations, mining, fisheries enhancements, and climate change. To help understand the cumulative impacts of local and regional factors on the trophic ecology of this large freshwater ecosystem, we used the paleolimnological approach to reconstruct changes over the past ∼ 200 years of primary production (subfossil pigments, diatom microfossils), secondary production (cladoceran zooplankton microfossils) and geochemistry (carbon and nitrogen isotopes, elemental analyses, % organic matter). Between ca. 1950 and the 2000’s changes in the sedimentary proxies are consistent with an enhanced influx of nutrients and dissolved organic carbon likely due to the cumulative landscape disturbances and an increase in precipitation. These changes include shifts in diatom composition ca. 1950 to higher abundances and taxa indicative of decreased light penetration and nutrient enrichment. Increases in δ¹⁵N (∼ +1‰) and cladoceran concentrations, concurrent with increasing sockeye salmon escapement post ca. 1975, is indicative of a higher pelagic fish production that occurs concurrently with both fisheries enhancements and sustained higher precipitation. The largest and most abrupt change in algal pigments occurred post ca. 2000, characterized by increases in motile and buoyant algae (i.e., chrysophytes, cryptophytes, colonial cyanobacteria), a time of increasing regional air temperatures, reduced spring and autumn winds, and resultant changes in patterns of lake mixing.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0380133024001539/pdfft?md5=73ca425f4899d5450ba008e4aa54c32c&pid=1-s2.0-S0380133024001539-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Nearshore and embayment zooplankton community structure in Lake Michigan, implications for invasion by bigheaded carps","authors":"Hillary L. Glandon ,&nbsp;Emily M. Reed ,&nbsp;Scot D. Peterson ,&nbsp;Charles R. Roswell ,&nbsp;Amber R. Schmidt ,&nbsp;John H. Chick ,&nbsp;Sara M. Thomas ,&nbsp;Patrick S. Forsythe ,&nbsp;Carl R. Ruetz III ,&nbsp;Sergiusz J. Czesny","doi":"10.1016/j.jglr.2024.102405","DOIUrl":"10.1016/j.jglr.2024.102405","url":null,"abstract":"<div><div>Zooplankton communities in Lake Michigan’s nearshore and embayment regions are important food sources for planktivorous and larval fish. Geographically extensive surveys of nearshore zooplankton abundance and composition are crucial for understanding spatial patterns in community structure and Lake Michigan’s food web. Over 400 zooplankton samples collected in 2013 and 2014 from 25 locations in Illinois, Michigan, and Wisconsin harbors, open waters, and drowned river mouth lakes of Lake Michigan were used to identify spatial and temporal patterns in zooplankton assemblages. Special focus was placed on the accurate collection of small-bodied taxa such as rotifers, copepod nauplii, and dreissenid veligers to explore the contribution of smaller taxa to total zooplankton biomass. Multivariate analysis identified zooplankton biomass and community structure in Green Bay, Wisconsin and Michigan drowned river mouth lakes as distinct from Illinois and Wisconsin harbor and nearshore areas. Our zooplankton biomass estimates were then applied to an existing bioenergetics model for bigheaded carps (<em>Hypophthalmichthys nobilis</em> and <em>H. molitrix</em>) to quantify their predicted growth, as a proxy for successful establishment in Lake Michigan. Locations where bigheaded carps were predicted to grow were consistent with patterns in zooplankton community structure and were restricted to a handful of sites in Green Bay and Michigan drowned river mouths. These results emphasize the importance of embayment zooplankton communities and small-bodied zooplankton as energy sources for both native and non-native fishes in an increasingly oligotrophic Lake Michigan.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0380133024001643/pdfft?md5=884d2396e1caeab0de008aac65e425ef&pid=1-s2.0-S0380133024001643-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"The benthic nepheloid layer in the offshore waters of the Great Lakes and its post-dreissenid disappearance","authors":"Richard P. Barbiero ,&nbsp;Lyubov E. Burlakova ,&nbsp;James M. Watkins ,&nbsp;Alexander Y. Karatayev ,&nbsp;Barry M. Lesht","doi":"10.1016/j.jglr.2024.102408","DOIUrl":"10.1016/j.jglr.2024.102408","url":null,"abstract":"<div><div>Prior to the appearance of <em>Dreissena</em>, pronounced benthic nepheloid layers (BNL) near the bottom characterized by elevated levels of both turbidity and total phosphorus (TP), were a consistent and extensive feature of the offshore, stratified waters of all the Laurentian Great Lakes, except Lake Superior. In recent (2010–2019) years, the BNL has disappeared from all areas except for central Lake Erie, where only a small decrease in bottom turbidity has occurred. All stratified regions which exhibited a pre-<em>Dreissena</em> BNL, including central Lake Erie, experienced substantial post-<em>Dreissena</em> reductions in near-bottom TP, although the forms of phosphorus (particulate or soluble) responsible for these reductions have varied from lake to lake. Notably, the arrival of <em>Dreissena</em> at offshore sites was not accompanied by an increase in soluble phosphorus. Initiation of changes in the BNL almost invariably preceded appearance of <em>Dreissena</em> in the offshore, suggesting both that dreissenid impacts on the reductions in the BNL were largely remote, and by extension that the source of the BNL was also at least in part remote. Previous researchers’ estimates of the importance of the benthic pool of phosphorus to offshore water column concentration suggest that the post-invasion reductions in bottom phosphorus during the stratified season could be contributing to the offshore oligotrophication of the lakes.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Aquatic invertebrate diversity in Apostle Islands and Isle Royale waters: Comparison among habitats and sampling gears and to open Lake Superior","authors":"Anett Trebitz ,&nbsp;Gerald Shepard ,&nbsp;Christy Meredith ,&nbsp;Greg Peterson ,&nbsp;Joel Hoffman","doi":"10.1016/j.jglr.2024.102406","DOIUrl":"10.1016/j.jglr.2024.102406","url":null,"abstract":"<div><div>Aquatic invertebrate composition in Great Lakes nearshore regions is known to differ from offshore, but studies representing the closest-to-land end of this gradient are primarily from estuaries and rivermouths having substantial watershed connectivity and anthropogenic influence. Here, we present data from aquatic invertebrate surveys conducted in two Lake Superior parks that are distanced from such watersheds and pressures, namely Apostle Islands National Lakeshore (APIS) and Isle Royale National Park (ISRO). Our intensive, multi-gear surveys from 99 APIS stations in 2017 and 165 ISRO stations in 2012 reveal a broad diversity of zooplankton and benthic/littoral macroinvertebrate taxa. Park samples yielded 29 zooplankton and &gt;300 benthic/littoral taxa, with richness exceeding that of comparable nearshore datasets, especially for aquatic insects, leeches, and mites. Station depth was a major factor structuring invertebrates, and benthic/littoral densities were highest and composition most diverse at shallow stations having aquatic vegetation. Species composition and taxa accumulation patterns differed considerably among sampling gears, highlighting the value of multi-gear surveys. Several park mollusk and insect species matched ‘special concern’ listings, and two non-native cladocerans were very abundant. These two surveys added 11 new species to the aquatic macroinvertebrates known from Lake Superior, highlighting the importance of these parks in harboring biodiversity and the importance of individualized assessments of places not well represented in more routine lakewide biological monitoring. Our data are available as baselines for future biological surveys and trend assessments.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Historical and morphological evidence for a remnant population of Lake Erie cisco Coregonus artedi (albus) in Crystal Lake, Pennsylvania","authors":"Joseph D. Schmitt ,&nbsp;Douglas P. Fischer ,&nbsp;Yu-Chun Kao ,&nbsp;Aaron Frey ,&nbsp;Marc Chalupniki ,&nbsp;James E. McKenna Jr ,&nbsp;Kristy Phillips ,&nbsp;Mark R. DuFour ,&nbsp;Richard T. Kraus ,&nbsp;Randy L. Eshenroder","doi":"10.1016/j.jglr.2024.102407","DOIUrl":"10.1016/j.jglr.2024.102407","url":null,"abstract":"<div><div>The cisco (<em>Coregonus artedi</em>) population in Crystal Lake, Pennsylvania, is of great scientific interest as it either originated from Lake Erie or Lake Ontario. Cisco in Lake Erie once supported the largest freshwater fishery in the world, but populations were extirpated by 1960. We conducted a morphological analysis of Crystal Lake cisco to determine whether it was consistent with a distinctive Lake Erie form (<em>albus</em>), which was also historically documented, albeit rarely, in western Lake Ontario. Using principal component analysis, we compared eight morphometric ratios and one meristic from our Crystal Lake cisco collection with historical and contemporary collections of cisco from Lakes Erie and Ontario. Maximum likelihood ellipse overlaps between Crystal Lake cisco and presumed <em>albus</em> (the dominant Lake Erie form prior to extirpation) collections averaged 54%. For all groups, the greatest morphological overlap (73.9%) occurred between Crystal Lake and 1957 Lake Erie cisco, which only differed from Crystal Lake cisco in dorsal fin length. Alternatively, overlap between Crystal Lake cisco and all other Lake Ontario collections averaged 3.2%. Our results demonstrate that Crystal Lake cisco are likely an <em>albus</em> form; furthermore, historical documentation and our morphological results suggest a Lake Erie origin. Substantial overlap between Crystal Lake cisco and Lake Ontario <em>albus</em> collected in 1917 is likely explained by continuous entrainment of Lake Erie larvae into Lake Ontario. We suspect this created an <em>albus</em> metapopulation spanning Lakes Erie and Ontario, yet <em>albus</em> are no longer observed in either lake today.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0380133024001667/pdfft?md5=1fb5bf26afe37bd298e8c49d90c2a6ce&pid=1-s2.0-S0380133024001667-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"An evaluation of sanitary and environmental survey use to protect beaches in the Great Lakes basin","authors":"Thomas A. Edge ,&nbsp;Gabrielle Parent Doliner ,&nbsp;Shannon Briggs ,&nbsp;Julie Kinzelman ,&nbsp;Matthew Dellinger","doi":"10.1016/j.jglr.2024.102401","DOIUrl":"10.1016/j.jglr.2024.102401","url":null,"abstract":"<div><div>Beaches are important for recreational and economic purposes. Beach advisories represent significant potential for human health risks as well as adverse impacts on local economies. The International Joint Commission’s Health Professionals Advisory Board (HPAB) and the Great Lakes Beach Association (GLBA) collaborated to assess the binational extent, experience, and effects of Great Lakes Beach Sanitary Surveys (BSS) in the United States and equivalent Environmental Health and Safety Surveys (EHSS) in Canada. A working group of HPAB and GLBA members distributed a questionnaire to beach managers around the Great Lakes. A total of 34 responses were received from beach programs and groups in each Great Lakes state in the United States and from Ontario, Canada. While 68% of respondents indicated surveys were conducted annually, at least 26% indicated they were not. Most beach monitoring programs around the Great Lakes used surveys to identify Canada geese (85% of programs), gulls (74%), stormwater runoff (74%), runoff from parking lots (59%) and algal blooms (58%) as sources of fecal pollution and potential health threats. Sewage (44%), dog fecal droppings (41%) and dangerous currents (32%) were also commonly reported. Waterfowl control actions after BSS/EHSS were the most common mitigation activity (65% of programs). Beach landscaping (50%) and sand grooming (47%) were also common mitigations. These results indicate the need to encourage use of BSS/EHSS more strongly, ensure beach programs have sustainable resources for BSS/EHSS, and ensure BSS/EHSS guide follow-up studies or mitigation actions.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Compositions, sources, and bioavailability of colloidal organic matter in Lake Taihu","authors":"Yanqing Ding ,&nbsp;Chengliang Wang ,&nbsp;Mengyang Sun ,&nbsp;Puyu Qi ,&nbsp;Youwen He ,&nbsp;Zhiru Hu ,&nbsp;Boqiang Qin","doi":"10.1016/j.jglr.2024.102400","DOIUrl":"10.1016/j.jglr.2024.102400","url":null,"abstract":"<div><div>Colloidal organic matter (COM) exists ubiquitously in natural waters, and plays a pivotal role in biogeochemical cycles. Lake Taihu is confronted with severe eutrophication and algal blooms. Field investigations were carried out in Lake Taihu and two inflow rivers for two years to identify the source of COM and explore the bioavailability of COM to algae. Compositions and sources of COM were analyzed through UV absorption coefficients and parallel factor analysis of three-dimensional excitation emission matrix spectra (3D EEMs-PARAFAC). Absorption coefficient <em>a</em>(350) of COM in rivers surpassed that in the lake, SUVA₂₅₄ exhibited noteworthy seasonal variations, and S_R indicated a stable autochthonous characteristic. Three components were identified by PARAFAC analysis: tryptophan-like (C1), humic-like (C2), and tyrosine-like (C3). Fluorescence indexes showed that C1 and C3 were mainly autochthonously produced and C2 was derived from allochthonous inputs. The bioassays were conducted to assess the bioavailability of COM to the dominant species, <em>Microcystis aeruginosa.</em> The results showed that colloids supplied rich carbon sources and trace metals, supporting the growth of <em>Microcystis aeruginosa</em>. The specific growth rate, Chl <em>a</em> content, and biological increment of <em>Microcystis aeruginosa</em> in 50 % colloid-added treatment exceeded those in 20 % and 75 % treatments. Simultaneously, the effective quantum yield (F_v/Fm) and the apparent photosynthetic electron transport rate (ETR_max) demonstrated that the photosynthetic activity of <em>Microcystis aeruginosa</em> was higher in 20 % treatment. These findings help in understanding the intricate mechanisms of COM in lake ecosystems, and provide the robust scientific foundation for water management and protection in Lake Taihu.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Speed kills? Migrating sea lamprey increase speed when exposed to an antipredator cue but make worse short-term decisions","authors":"M.E. Feder ,&nbsp;B.D. Wisenden ,&nbsp;TM Luhring ,&nbsp;CM Wagner","doi":"10.1016/j.jglr.2024.102398","DOIUrl":"10.1016/j.jglr.2024.102398","url":null,"abstract":"<div><div>There is growing evidence that a natural repellent, injury-released alarm cues, can be used to guide the movements of invasive fishes to achieve management goals. However, because this process involves perception, downstream cognitive processing of sensory information affects decisions regarding expression of antipredator behavior. Response habituation, wherein repeated or continuous exposure to a cue reduces behavioral response rates, is an oft-cited challenge for use of predation cues as conservation tools. Habituation may be delayed or prevented by altering the concentration and/or the temporal pattern of odor release (pulses of odor vs continuous application). We examined the effects of varying odor concentration and exposure regime (continuous vs pulsed) on behavioral response of adult sea lamprey (<em>Petromyzon marinus</em>) to conspecific alarm cue in a two-choice maze. We found that exposure to alarm cue induced more frequent and rapid upstream movement, regardless of exposure regime. There was also clear evidence of a speed-accuracy tradeoff, wherein sea lamprey that took longer to arrive at the bifurcation in the maze were more likely to avoid the arm activated with alarm cue. We could not ascertain the value of increasing concentration or pulsing the alarm cue on preventing habituation, as habituation did not occur. We hypothesize dishabituation to the alarm cue occurred immediately prior to testing due to handling that may have inadvertently simulated an unsuccessful predator attack. If true, incorporating dishabituating stimuli may prove a useful means to maintain the efficacy of alarm cue when applied as a repellent to manipulate the movements of sea lamprey.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0380133024001576/pdfft?md5=4788a4a666d10929cd0ef58ae84f0fd7&pid=1-s2.0-S0380133024001576-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Effects of increasing tile drainage and seasonal weather patterns on phosphorus loading from three major Canadian Lake Erie tributaries","authors":"Alana C. Tedeschi,&nbsp;Rachelle A. Fortier,&nbsp;Patricia Chow-Fraser","doi":"10.1016/j.jglr.2024.102396","DOIUrl":"10.1016/j.jglr.2024.102396","url":null,"abstract":"<div><div>Tile-drainage area has expanded across the Canadian Lake Erie watershed in recent decades, and effects on phosphorus (P) loading are unclear. Eleven years (2010 to 2021) of daily P, total suspended solids (TSS), discharge, and climatological data were aggregated from three Canadian tributaries that form a gradient of tiled areas: East Sydenham River (ESR, 60% tile), Thames River (TR, 48% tile), and Grand River (GR, 23% tile). Instead of using traditional seasons (winter, spring, summer, fall), we classified seasons by air temperature to highlight hydrological periods of importance for P loss through tile drains. Seasons included frozen (&lt;−3.2 °C), thawing (−3.2 – 6.7 °C), bare (6.7 – 15.9 °C), and growing (&gt;15.9 °C). Nonparametric comparisons revealed that during every season, the ESR and TR had significantly higher soluble reactive P (SRP) and total P (TP) concentrations than the GR. For %SRP, the ESR was significantly higher than the other rivers during every season, while for TSS, the GR was significantly higher than the other rivers during every season. Only during the thawing season were positive relationships observed in every river between year-over-year tile-drainage proportion and associated P loadings and concentrations. The ESR was the only river to yield significant relationships between tile drainage and P in all seasons except the frozen season. Our findings suggest that increases in tile-drainage area can lead to increases in SRP loading to Lake Erie from Canadian tributaries, especially during the thawing season. However, effects of tile drainage are moderated by differences in soil texture, land-use-land-cover, climate, and point sources.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0380133024001540/pdfft?md5=015d4502f27051fc6076a327775ca3d3&pid=1-s2.0-S0380133024001540-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141853324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}