Journal of Great Lakes Research最新文献_第9页

Acute toxicity of lampricides to non-target species of concern in the Lake Champlain watershed 尚普兰湖流域lampriides对非目标物种的急性毒性研究

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-12-01 DOI: 10.1016/j.jglr.2024.102422

Gary N. Neuderfer , Lance E. Durfey , Michael T. Calloway , Stephen J. Smith , Justin R. Schueller

{"title":"Acute toxicity of lampricides to non-target species of concern in the Lake Champlain watershed","authors":"Gary N. Neuderfer , Lance E. Durfey , Michael T. Calloway , Stephen J. Smith , Justin R. Schueller","doi":"10.1016/j.jglr.2024.102422","DOIUrl":"10.1016/j.jglr.2024.102422","url":null,"abstract":"<div><div>Previous research evaluated the toxicity of the lampricide 4-nitro-3-(trifluoromethyl)phenol (TFM) and the combination of TFM with 1 % niclosamide (TFM:1%Nic) to multiple non-target species in the Laurentian Great Lakes. However, few toxicity studies have been conducted for species of concern in Lake Champlain (NY and VT). We conducted 12-hour flow-through toxicity tests with 4 species of native mussels, 6 species of fish, and 1 amphibian species. All tests included exposure of invasive larval <em>Petromyzon marinus</em> (sea lamprey) and were conducted with concentrations that bracketed the predicted minimum lethal concentration required to control larval sea lamprey. Mussel species’ NOEC, LOEC, LC<sub>25</sub>, and LC<sub>50</sub> values ranged from 1.33 to 2.12, 1.71–2.66, 1.75–3.05, and 2.03–4.84 times field determined LC<sub>99.9</sub>s for sea lamprey (×SL<sub>LC99.9</sub>) in TFM-only toxicity tests, and from 1.36 to 1.70, 1.68–2.03, 1.86–2.10, and 2.35–2.68 × SL<sub>LC99.9</sub> for TFM:1%Nic toxicity tests, respectively. Fish species NOEC, LOEC, LC<sub>25</sub>, and LC<sub>50</sub> values ranged from 0.60 to 1.89, 0.73–2.13, 0.72–2.11, and 0.76–2.18 × SL<sub>LC99.9</sub> in TFM-only toxicity tests, and from 0.64 to 2.48, 0.85–3.10, 0.74–3.05, and 0.78–3.16 × SL<sub>LC99.9</sub> for TFM:1%Nic toxicity tests, respectively. Amphibian species NOEC, LOEC, LC<sub>25</sub>, and LC<sub>50</sub> values ranged from 0.74 to 0.75, 0.85–0.95, 0.83–0.87, and 0.85–0.91 × SL<sub>LC99.9</sub> in TFM-only toxicity tests, and from 0.63 to 0.65, 0.80–0.88, 0.77–0.82, and 0.78–0.87 × SL<sub>LC99.9</sub> for TFM:1%Nic toxicity tests, respectively. Generally, mussel species were tolerant, fish sensitivities were variable, and the amphibian species was sensitive to TFM and TFM:1%Nic.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 6","pages":"Article 102422"},"PeriodicalIF":2.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143061","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}

引用次数: 0

Influence of barrier beach dynamics on ecological indicator taxa in north-central Lake Ontario coastal wetlands 屏障滩涂动态对安大略湖中北部滨海湿地生态指示类群的影响

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-12-01 DOI: 10.1016/j.jglr.2024.102437

Grace N. Hoskin, Joshua R. Thienpont, Pham Ha Phuong Do, Kristen A. Coleman, Jennifer B. Korosi

{"title":"Influence of barrier beach dynamics on ecological indicator taxa in north-central Lake Ontario coastal wetlands","authors":"Grace N. Hoskin, Joshua R. Thienpont, Pham Ha Phuong Do, Kristen A. Coleman, Jennifer B. Korosi","doi":"10.1016/j.jglr.2024.102437","DOIUrl":"10.1016/j.jglr.2024.102437","url":null,"abstract":"<div><div>Adaptive management of protected coastal wetlands requires an understanding of barrier dynamics over long timescales as well as feedbacks with ecosystem processes. In this study, we examined diatom (siliceous algae) and Cladocera (crustacean zooplankton) subfossil remains preserved in sediments as (paleo)ecological indicators of barrier beach dynamics in coastal wetlands along the north-central shore of Lake Ontario. Sediments integrate information across seasons and habitats, accounting for spatiotemporal variability in ecological indicator taxa that is often missed in contemporary sampling efforts. Subfossil remains also allow for reconstruction of historical changes before contemporary monitoring began. We found that small benthic Fragilariaceae diatom taxa were most abundant in high-closure barrier beach wetlands, and were uncommon in drowned river mouth wetlands, while Cladocera assemblages did not reflect coastal wetland hydrogeomorphology. A high-resolution paleoecological study of McLaughlin Bay, a high-closure barrier beach wetland, showed that the abundance of small benthic Fragilariaceae decreased, and diatom diversity increased, when the barrier was breached in 2005 and 1954. Recent increases in small benthic Fragilariaceae were consistent with assessments by the local conservation authority that McLaughlin Bay has become less connected to Lake Ontario in recent years, lending support to artificial barrier beach manipulation as a strategy to improve water quality. Barrier beach dynamics create a natural disturbance regime that is important for maintaining biodiversity and water quality in protected coastal wetlands. Our study provides an approach to monitor and investigate coupled physical-ecological dynamics of barrier beach coastal wetlands over decadal to centennial timescales.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 6","pages":"Article 102437"},"PeriodicalIF":2.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142485","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}

引用次数: 0

Comparing three common nest survey methods, using double-crested cormorants as a proposed sentinel for monitoring plastic pollution in freshwater environments 比较三种常见的鸟巢调查方法，以双冠鸬鹚作为监测淡水环境塑料污染的哨兵

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-12-01 DOI: 10.1016/j.jglr.2024.102448

Kerry Schutten , André Morrill , Akshaya Chandrashekar , D.V. Chip Weseloh , E. Jane Parmley , Brian Stevens , Claire Jardine , Jennifer F. Provencher

{"title":"Comparing three common nest survey methods, using double-crested cormorants as a proposed sentinel for monitoring plastic pollution in freshwater environments","authors":"Kerry Schutten , André Morrill , Akshaya Chandrashekar , D.V. Chip Weseloh , E. Jane Parmley , Brian Stevens , Claire Jardine , Jennifer F. Provencher","doi":"10.1016/j.jglr.2024.102448","DOIUrl":"10.1016/j.jglr.2024.102448","url":null,"abstract":"<div><div>Many bird species use plastic as nest-building material, and nest surveys represent a unique opportunity to monitor environmental plastic pollution. However, the current literature lacks consistent, repeatable methodologies, making comparison across studies challenging. This study evaluated three common nest survey methods to assess the use of nest debris: photographic assessment, visual assessment, and nest deconstruction. We applied these methods to double-crested cormorant nests (<em>Nannopterum auritum</em>) at two locations on Lake Ontario, Canada. We found that for this species, nest deconstruction yielded the greatest accuracy and detail for detecting debris abundance, type, and colour. Of the two non-invasive methods, visual surveys outperformed photographic surveys across all metrics assessed. In our mainland colony, 100% of nests contained debris based on visual assessment, while at our offshore colony only 37.4% of nests contained debris, suggesting that location influences nest debris for this species. We detected Personal Protective Equipment (PPE)-related debris in 20% of all nests across survey years at our mainland colony (2022 and 2023), representing the first time that PPE has been documented in the nests of this species and demonstrating that nest surveys can be a useful tool for capturing changes in an evolving pollution landscape. This study contributes evidence that double-crested cormorants may be a useful sentinel species for monitoring plastic pollution in understudied, freshwater environments. Our results also demonstrate that the chosen method can greatly impact the results of a nest survey, and careful consideration of methodology should be undertaken before implementing a nest survey to monitor plastic pollution.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 6","pages":"Article 102448"},"PeriodicalIF":2.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142480","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}

引用次数: 0

Investigating nearshore spatial and temporal trends in nutrient concentrations along an urban northern shoreline, Lake Ontario 调查近岸沿城市北部岸线，安大略湖营养物浓度的时空趋势

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-12-01 DOI: 10.1016/j.jglr.2024.102419

Tyler J. Harrow-Lyle , David C. Depew , Andrew J. Bramburger , Reza Valipour , Krista M. Chomicki

{"title":"Investigating nearshore spatial and temporal trends in nutrient concentrations along an urban northern shoreline, Lake Ontario","authors":"Tyler J. Harrow-Lyle , David C. Depew , Andrew J. Bramburger , Reza Valipour , Krista M. Chomicki","doi":"10.1016/j.jglr.2024.102419","DOIUrl":"10.1016/j.jglr.2024.102419","url":null,"abstract":"<div><div>The nearshore zone of the Laurentian Great Lakes is of significant ecological importance, providing critical biogeochemical processes supporting spatially diverse habitats for a variety of species. Extreme plant and algal growth are common due to excessive anthropogenic eutrophication, with exacerbations from dreissenid establishment and lake mixing (e.g., coastal upwelling events and nearshore-offshore water exchanges), resulting in nuisance algal blooms across the nearshore area adjacent to Western Durham, Ontario, Canada. Thus, our main goal was to characterize the trends in essential nutrients (i.e., phosphorus and nitrogen) within the nearshore by applying general additive models on irregular time-series from 2011 to 2022 and to identify plausible contributing factors using exploratory principal component analysis. Increasing trends for total phosphorus were observed in surface (0.5 m below the surface) and benthic (0.5 m above the bottom) waters despite decreases in point source loading to the area. Most notably, the local water pollution control plant (WPCP) outfall did not seem to drive lake phosphorus concentrations across the study area, depicted by an orthogonal relationship within the principal component analysis. While the WPCP is a point source to the nearshore, it does not appear to be the primary driver of temporal lake phosphorus trends. Our results suggest that weather, inertial forcings and lake hydrodynamics in combination with traditional point-sources across Western Durham are contributing to the increasing total phosphorus trends observed as the peak period of wave spectra, wave height, alongshore wind speeds, watershed loadings, and total phosphorus concentrations within Lake Ontario were positively associated.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 6","pages":"Article 102419"},"PeriodicalIF":2.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142481","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}

引用次数: 0

Are lakemounts hotspots of productivity and biodiversity? 湖泊是生产力和生物多样性的热点吗？

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-12-01 DOI: 10.1016/j.jglr.2024.102440

Bianca Possamai , J. Ellen Marsden , John Janssen , Michael D. Rennie , Thomas R. Hrabik , Jason D. Stockwell

{"title":"Are lakemounts hotspots of productivity and biodiversity?","authors":"Bianca Possamai , J. Ellen Marsden , John Janssen , Michael D. Rennie , Thomas R. Hrabik , Jason D. Stockwell","doi":"10.1016/j.jglr.2024.102440","DOIUrl":"10.1016/j.jglr.2024.102440","url":null,"abstract":"<div><div>Oceanic seamounts are hotspots of biodiversity, productivity, and other ecosystem processes. Different hydrodynamic processes leading to physical-biological coupling dynamics occur in these systems making them oases in the open ocean. Due to their disproportional effects on ecosystem function (e.g., high biogeochemical rates), seamounts can also be considered ecosystem control points. On a smaller scale, abrupt offshore reefs in large lake ecosystems (i.e., “lakemounts”) may serve similar roles as seamounts by parallel mechanisms. However, very little is known about lakemounts or the physical-biological coupling that could make these isolated habitats an important source of energy production and biodiversity for offshore, open-water regions of large lakes. We hypothesize that lakemount-induced upwellings serve a similarly important process in lakes as seamounts in the ocean, boosting productivity and biodiversity in offshore areas of large lakes. Identification of these biodiversity hotspots and ecosystem control points, and the mechanisms driving their processes, is vital for understanding how climate change may alter physical-biological coupling and resultant community- and ecosystem-level processes. Such linkages may play a key role for effective and cost-efficient environmental conservation and the maintenance of ecosystem function and services in large lake ecosystems in the face of global change.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 6","pages":"Article 102440"},"PeriodicalIF":2.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143105","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}

引用次数: 0

Revisiting zooplankton as indicators in the Great Lakes: Which indicators detect temporal changes in the zooplankton community composition? 重新审视作为五大湖指标的浮游动物：哪些指标能检测浮游动物群落组成的时间变化？

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-08-27 DOI: 10.1016/j.jglr.2024.102417

Stephanie E. Figary , James M. Watkins , T. Bruce Lauber , Anne E. Scofield , Lars G. Rudstam

{"title":"Revisiting zooplankton as indicators in the Great Lakes: Which indicators detect temporal changes in the zooplankton community composition?","authors":"Stephanie E. Figary , James M. Watkins , T. Bruce Lauber , Anne E. Scofield , Lars G. Rudstam","doi":"10.1016/j.jglr.2024.102417","DOIUrl":"10.1016/j.jglr.2024.102417","url":null,"abstract":"<div><div>Zooplankton are a vital component of the food web as the major conduit of energy from primary producers to planktivorous fishes. Therefore, changes in the structure of the zooplankton community affect how energy moves through aquatic ecosystems. Changes in the zooplankton community structure are typically documented through detailed community analysis, which can be difficult to interpret and communicate to non-experts. Alternatively, a few key summary indicators of community structure may better disseminate this information to a broader audience. In this study we analyzed zooplankton data from 1997 to 2019 from the US Environmental Protection Agency’s Great Lakes National Program Office to select indicators that summarized changes in the zooplankton community. Two indicators (percent of calanoids by biomass and areal density of herbivorous cladocerans) detected known changes in lakes Huron, Michigan, and Ontario, correlated with the crustacean zooplankton areal biomass above (herbivorous cladocerans) or in the hypolimnion (percent calanoids), and were related to the lake or basin-wide Carlson’s Trophic State Index based on chlorophyll (TSI<sub>chl</sub>) (percent calanoids by biomass). Our findings suggest that employing one or both selected indicators in addition to TSI<sub>chl</sub> and total crustacean zooplankton areal biomass, an already reported indicator in the Great Lakes that captures overall food availability for fish, would provide additional key information about zooplankton community structure in simple metrics that could be effectively communicated to stakeholders.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 5","pages":"Article 102417"},"PeriodicalIF":2.4,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316240","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}

引用次数: 0

Comparison of cisco (Coregonus artedi) aerobic scope and thermal tolerance between two latitudinally-separated populations 两个纬度不同的种群之间的矶鳕有氧范围和热耐受性比较

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-08-22 DOI: 10.1016/j.jglr.2024.102415

Martin A. Simonson , David B. Bunnell , Charles P. Madenjian , Kevin M. Keeler , Joseph D. Schmitt

{"title":"Comparison of cisco (Coregonus artedi) aerobic scope and thermal tolerance between two latitudinally-separated populations","authors":"Martin A. Simonson , David B. Bunnell , Charles P. Madenjian , Kevin M. Keeler , Joseph D. Schmitt","doi":"10.1016/j.jglr.2024.102415","DOIUrl":"10.1016/j.jglr.2024.102415","url":null,"abstract":"<div><div>The cisco <em>Coregonus artedi</em> is a coldwater fish that is distributed throughout much of Canada and the northern United States, including the Laurentian Great Lakes. Cisco historically supported large commercial fisheries in the Great Lakes during the late 1800s and early 1900s, but many populations declined and never recovered. Restoration efforts focusing on re-establishing cisco in the Great Lakes are underway, but increasing water temperatures may hinder these efforts. Therefore, we examined aerobic scope and thermal tolerance of allopatric cisco populations from different latitudes and habitats to determine if a southern latitude population (Crooked Lake, Indiana, USA) near the southern edge of cisco distribution was better adapted to withstand warmer water temperatures than a northern latitude population (Les Cheneaux Islands, Michigan, USA; Lake Huron). As expected, both stocks demonstrated increases in metabolic rates and absolute aerobic scope with increased temperature. Northern cisco had significantly lower aerobic scope compared to southern cisco at both treatment temperatures of 10 and 13 °C. Both cisco stocks had high thermal tolerances when challenged by temperatures increased to 20 and 23 °C but low tolerances at 26 °C. Cisco thermal tolerances increased with acclimation temperature, but we did not detect a difference in thermal tolerances between northern and southern cisco. Although southern cisco had higher capacity for aerobic metabolism, both stock sources had high thermal tolerances at the upper end of their thermal limits. Therefore, either population would be likely suitable for reintroduction into Great Lakes habitats, even with expected warming in the future.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 5","pages":"Article 102415"},"PeriodicalIF":2.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316133","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}

引用次数: 0

A bellwether for microplastic in wetland catchments in the Great Lakes region 大湖区湿地集水区微塑料的风向标

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-08-22 DOI: 10.1016/j.jglr.2024.102411

Dominique S. Gilbert , Brett A. Hayhurst , Sarah Grubisich , Nick Schneider , Olivia Martin , Christopher DeNyse , Kristina M. Chomiak , Anna Christina Tyler , Nathan C. Eddingsaas

{"title":"A bellwether for microplastic in wetland catchments in the Great Lakes region","authors":"Dominique S. Gilbert , Brett A. Hayhurst , Sarah Grubisich , Nick Schneider , Olivia Martin , Christopher DeNyse , Kristina M. Chomiak , Anna Christina Tyler , Nathan C. Eddingsaas","doi":"10.1016/j.jglr.2024.102411","DOIUrl":"10.1016/j.jglr.2024.102411","url":null,"abstract":"<div><div>This study is intended as a bellwether for the occurrence of microplastics (MPs) in Great Lakes wetlands. In 2020, sediment, surface water, and atmospheric deposition samples were collected from wetland catchments in or near five National Wildlife Refuges (NWRs) in the Great Lakes region: Horicon-WI, Seney-MI, Shiawassee-MI, Ottawa-OH, and Montezuma-NY. Sediment and surface water samples were taken from river, stream, and canal inflows and outflows to and from wetland areas. Atmospheric deposition samples were collected in carboys placed near established rain gauges. These sample sites were chosen as indicators of MP deposition into and out of the region’s wetland systems. MPs (100 μm–4 mm surface water samples; 63 μm–4 mm sediment and atmospheric deposition samples) were extracted from each sample, enumerated, and categorized by particle morphology and polymer type. Average MP particle abundances in the sediment and surface water samples ranged from 344 to 538 particles kg<sup>−1</sup> (dry weight) and 2–68 particles m<sup>−3</sup>, respectively. Atmospheric MP deposition ranged from 5.8 to 22.6 particles m<sup>−2</sup> d<sup>−1</sup>. Fibers were the most abundant MP particle type found in each sample type (sediment, surface water, and atmospheric deposition), followed by fragments. These results suggest that input and retention of MPs are pervasive in the Great Lakes region and surrounding wetland areas.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 5","pages":"Article 102411"},"PeriodicalIF":2.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316237","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}

引用次数: 0

Influences of meteorological conditions, runoff, and bathymetry on summer thermal regime of a Great Lakes estuary 气象条件、径流和水深对五大湖河口夏季热制度的影响

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-08-22 DOI: 10.1016/j.jglr.2024.102416

Owen M. Stefaniak , Faith A. Fitzpatrick , Brennan A. Dow , James D. Blount , Daniel J. Sullivan , Paul C. Reneau

{"title":"Influences of meteorological conditions, runoff, and bathymetry on summer thermal regime of a Great Lakes estuary","authors":"Owen M. Stefaniak , Faith A. Fitzpatrick , Brennan A. Dow , James D. Blount , Daniel J. Sullivan , Paul C. Reneau","doi":"10.1016/j.jglr.2024.102416","DOIUrl":"10.1016/j.jglr.2024.102416","url":null,"abstract":"<div><div>To better understand the primary drivers of the thermal regime in a Great Lakes estuary, and their implications for local biota, water temperature variations in the Milwaukee Estuary of Lake Michigan were studied between July and October of 2019 using a network of 25 sensors at 18 locations. Like Lake Michigan, the estuary was thermally stratified July to October, and historically dredged channels with water depths greater than 6 m allowed for the free movement of cold lake water into the estuary. However, temperatures in the estuary fluctuated rapidly both spatially and temporally, reflecting lake temperature fluctuations driven by changing meteorological conditions. Lake-driven upwelling and downwelling events influenced water temperature more than tributary contributions. Periodic upwelling and downwelling events caused temperature changes by up to 15 °C in less than 24 h. Nearshore upwelling events occasionally allowed cold, hypolimnetic lake water to reach tributary portions of the estuary beyond dredged areas, while downwelling events disrupted thermal stratification and caused the deep, dredged portions of the estuary to exceed 20 °C. Thermal impacts from these events were especially noticeable in transition zones between dredged and not dredged channels less than 2 m deep. The warming effects from downwelling persisted longer inside the estuary – up to two weeks – than cooling effects from upwelling, which typically lasted a few days. The predominantly lake-driven, rapid summer water temperature fluctuations observed in the Milwaukee Estuary serve as an important consideration in habitat restoration activities happening in Great Lakes estuaries.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"50 5","pages":"Article 102416"},"PeriodicalIF":2.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0380133024001758/pdfft?md5=555a5d9dc1be2d20211fa046cec9b08c&pid=1-s2.0-S0380133024001758-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316238","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}

引用次数: 0

Lake-bottom geology of the Chicago nearshore: A sand-distribution context for urban beach morphodynamics along a fragmented littoral zone 芝加哥近岸的湖底地质：沿破碎沿岸带城市海滩形态动力学的砂分布背景

IF 2.2 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2024-08-07 DOI: 10.1016/j.jglr.2024.102412

Christopher R. Mattheus, Mitchell E. Barklage

{"title":"Lake-bottom geology of the Chicago nearshore: A sand-distribution context for urban beach morphodynamics along a fragmented littoral zone","authors":"Christopher R. Mattheus, Mitchell E. Barklage","doi":"10.1016/j.jglr.2024.102412","DOIUrl":"https://doi.org/10.1016/j.jglr.2024.102412","url":null,"abstract":"This paper reports on a high-resolution, regional sand assessment of the Chicago littoral zone, undertaken within ∼ 3 km from shore, to facilitate an improved process-based understanding of pocket-beach morphodynamics between the distinctive North and South sides of the Chicago Lake Michigan shoreline. While past studies have touched upon regional themes of sand limitation and littoral fragmentation by lakefill peninsulas and engineered shoreline infrastructure at these two areas, the integration of digital ‘chirper’ marine seismic reflection data (collected in 2022), geologic information from newly acquired sediment cores and lake-bottom grab samples (from 2023), and a 2020 LiDAR-based topobathymetric DEM provided the basis for geological lake-bottom unit characterization and delineation, a context for morphodynamics. Major findings are that: (1) The sandy lake bottom is distinct in bathymetric character from other compositions/textures, including bedrock, gravel-lag, and muddy sediments; (2) the Chicago North Side is sandier than the Chicago South Side; (3) sand thickness is greatest beneath urban pocket beaches and decreases sharply at the transition from engineered embayment to open lake environment; (4) sand thickness beyond semi-confinement is generally < 1 m, with the toe of the littoral sand wedge generally in > 5 m water depth; and (5) while the Chicago North Side littoral zone is continuously sandy alongshore, with few obstructions impacting unit continuity, that of the South Side is characterized by littoral fragmentation given exposure of bedrock highs. Differences in framework geology between Chicago North and South Sides are further enhanced by engineered shoreline structures and therewith associated littoral fragmentation.","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"8 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187335","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}

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