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

Bacterial community structure across a sand dune chronosequence at the Indiana Dunes National Park 细菌群落结构跨越沙丘时间序列在印第安纳沙丘国家公园

IF 2.5 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-10-01 Epub Date: 2025-07-05 DOI: 10.1016/j.jglr.2025.102611

Muruleedhara N. Byappanahalli , Noel B. Pavlovic , Cindy H. Nakatsu

{"title":"Bacterial community structure across a sand dune chronosequence at the Indiana Dunes National Park","authors":"Muruleedhara N. Byappanahalli , Noel B. Pavlovic , Cindy H. Nakatsu","doi":"10.1016/j.jglr.2025.102611","DOIUrl":"10.1016/j.jglr.2025.102611","url":null,"abstract":"<div><div>The microbial role in dune succession along the Great Lakes freshwater sand dunes remains poorly understood. A chronosequence study was conducted to understand the relationships among soil bacterial communities, soil chemistry, and prescribed burning at the Indiana Dunes National Park. Soil bacterial communities and chemistry, as well as groundlayer vegetation were sampled during 2015 and 2017 from seven successional stages from the beach (contemporary) to the 14,000-year-old oak forest. Bacterial communities from unburned and burned sites among stages were determined by 16S rRNA gene amplicon sequencing. Soil pH and cations decreased from early (beach, foredune, secondary dune, and woodland transition) to late (oak savanna, woodland, and oak forest) successional stages, while organic matter and organic carbon concentrations increased in the late successional stages. Bacterial alpha diversity showed no significant differences among stages, but a significant interaction was found between stage and prescribed burning (H = 39.7, p < 0.001). Bacterial communities separated mainly along stage by all four beta diversity metrics used (Bray Curtis, Jaccard, and Weighted and Unweighted UniFrac), with the main difference observed along the primary axis (weighted UniFrac, 48 %). Bacterial phyla were differentially abundant in older soil stages compared to beach (ANCOM-BC, q < 0.05); likewise, differential abundances in genera were evident when burned and unburned sites were compared. A Mantel test indicated stronger congruency between the bacterial communities and soil chemistry than between bacterial communities and vegetation. Collectively, soil chemical and microbial parameters along with management practices contribute to dunal successional patterns in the Great Lakes.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 5","pages":"Article 102611"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242349","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

Grass carp (Ctenopharyngodon idella) movement states and backwater use can inform removal efforts 草鱼（Ctenopharyngodon idella）的运动状态和回水利用可以为清除工作提供信息

IF 2.5 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-10-01 Epub Date: 2025-08-06 DOI: 10.1016/j.jglr.2025.102654

Sophia M. Bonjour , Robert D. Hunter , James J. Roberts , Travis O. Brenden , Scott F. Colborne , Matthew D. Faust , Christine M. Mayer , Robert Mapes , Richard T. Kraus , Robin D. Calfee , Matthew R. Acre

{"title":"Grass carp (Ctenopharyngodon idella) movement states and backwater use can inform removal efforts","authors":"Sophia M. Bonjour , Robert D. Hunter , James J. Roberts , Travis O. Brenden , Scott F. Colborne , Matthew D. Faust , Christine M. Mayer , Robert Mapes , Richard T. Kraus , Robin D. Calfee , Matthew R. Acre","doi":"10.1016/j.jglr.2025.102654","DOIUrl":"10.1016/j.jglr.2025.102654","url":null,"abstract":"<div><div>Expansion of grass carp (<em>Ctenopharyngodon idella</em>) within the Laurentian Great Lakes poses significant ecological and economic risks. Suppression efforts to remove grass carp have increased to curtail population growth, but capture efficiency remains low. One management challenge is the lack of understanding how this invasive species is using its novel habitats in the Great Lakes. This study aimed to identify spatiotemporal patterns in grass carp behavior and backwater use that could be exploited by management efforts, including removal. We used acoustic telemetry to examine when grass carp occurred in areas vulnerable to removal by boat electrofishing in the Sandusky River, Ohio, USA. Hidden Markov models were used to categorize behavioral states and evaluate their relationships with environmental factors. Best performing 2-state and 3-state hidden Markov models included proximity to backwater as a factor in state-dependent step length and transition probability between states, with a higher probability of being in less mobile states during the middle of the day and in backwaters. For the 2-state model, this less mobile state was also more common during warmer temperatures. Distinct diel patterns and backwater use identified in this study provide critical insights for improving management. Model results suggest that current removal efforts, focused primarily on the mainstem of the river, may benefit from adjustments in both timing and removal gear. The findings raise further questions about unobserved behaviors contributing to state assignment and sufficiently flexible adaptive management strategies to account for individual variation in grass carp behavior.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 5","pages":"Article 102654"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242342","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

Resourcing Michigan’s coastal decision-makers: Assessing needs & opportunities 为密歇根沿海决策者提供资源：评估需求和机会

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2025-01-15 DOI: 10.1016/j.jglr.2025.102512

Mike Shriberg , Richard K. Norton , Silvia Newell , Kat Cameron , Abigail Merolle

{"title":"Resourcing Michigan’s coastal decision-makers: Assessing needs & opportunities","authors":"Mike Shriberg , Richard K. Norton , Silvia Newell , Kat Cameron , Abigail Merolle","doi":"10.1016/j.jglr.2025.102512","DOIUrl":"10.1016/j.jglr.2025.102512","url":null,"abstract":"<div><div>Despite increased interest in and funding for coastal resilience, Great Lakes coastal managers have not been able to keep pace with community needs, an ongoing challenge heightened by higher variability in shoreline dynamics due to climate change. To identify resource needs and gaps and to support approaches to coastal resilience in Michigan, we conducted interviews and convened a workshop and briefing with over 50 coastal managers and experts. The results revealed that there is a strong need and desire for greater clarity about how to prioritize many and, at times, competing demands, for identifying methods for equitable shoreline protection, for guidance on garnering and utilizing funding, for assistance communicating and engaging with the community, and for clarifying the role regulations and community plans can and should play. Key barriers to addressing these needs and gaps include a lack of capacity among coastal managers, inadequate understanding of problems and solutions, and a lack of political incentives for proactive decision-making. These gaps often lead to short-term, highly localized decisions that often have adverse impacts. To address these deficiencies, workshop participants and the authors developed a community-based framework comprising five pillars: planning assistance, legal/policy assistance, ecologically informed technical assistance, communication and community engagement, and funding assistance. To help implement these pillars, participants suggested forming three overlapping communities of practice as well as the creation of a coastal resilience resource hub (which has since been created for Michigan with plans to expand regionwide) as a repository of resources to support coastal managers in decision-making.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102512"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687520","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

Addressing Great Lakes coastal hazards through regional communities of practice 通过区域实践社区解决大湖区沿海灾害

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2024-10-14 DOI: 10.1016/j.jglr.2024.102439

Lydia M. Salus , Sarah A. Brown , Adam J. Bechle

{"title":"Addressing Great Lakes coastal hazards through regional communities of practice","authors":"Lydia M. Salus , Sarah A. Brown , Adam J. Bechle","doi":"10.1016/j.jglr.2024.102439","DOIUrl":"10.1016/j.jglr.2024.102439","url":null,"abstract":"<div><div>Four regional Communities of Practice (CoPs) were developed across the coasts of Wisconsin and Minnesota to help communities connect with each other as they address their common challenges with coastal hazards like erosion, storms, and flooding. Great Lakes coastal hazards are significantly influenced by the water levels of the lakes, which can vary by up to ∼ 2 m (∼6.5 feet) between record highs and lows. These decadal fluctuations of water levels can lead to hazard impacts being forgotten in between the extremes, resulting in a diminished capacity to address coastal hazards when extreme conditions return. These hazards are expected to persist and potentially become more severe due to changing climate conditions. To build capacity to address coastal hazards, public officials and staff have consistently expressed a need for structure and leadership to guide knowledge sharing and collaborative action between coastal communities. The four regional CoPs coordinated learning and sharing among communities to collectively build coastal resilience and bring more resources to the region. These CoPs have provided members with learning opportunities, relationship building activities, technical assistance, and regular communications about hazards and resources. Members report that their participation in the CoPs resulted in outcomes that reduce coastal hazard risk, including improved planning, enhanced mapping capabilities, and identification of priority coastal management practices. The technical and social capacity created through the CoPs has helped members work across boundaries to navigate complex coastal hazard issues. Through regular evaluation, the CoPs have continued to evolve to meet changing needs of their member coastal communities.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102439"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687521","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

Thermodynamic exposure reductions of PCBs available to Lumbriculus variegatus in Lake Erie region sediments amended with activated carbon 伊利湖地区沉积物中多氯联苯的热力学暴露减少

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2025-04-25 DOI: 10.1016/j.jglr.2025.102582

Philip T. Gidley, Guilherme R. Lotufo, Paul R. Schroeder

{"title":"Thermodynamic exposure reductions of PCBs available to Lumbriculus variegatus in Lake Erie region sediments amended with activated carbon","authors":"Philip T. Gidley, Guilherme R. Lotufo, Paul R. Schroeder","doi":"10.1016/j.jglr.2025.102582","DOIUrl":"10.1016/j.jglr.2025.102582","url":null,"abstract":"<div><div>A chemical activity-based assessment of polychlorinated biphenyl (PCB) bioaccumulation from Lake Erie region sediments was studied using polydimethylsiloxane (PDMS) coated fibers and Dow Corning (DC) silicone coated jars, both with ex situ mixing (i.e., agitation). Polymers equilibrated with the sediments were compared to bioaccumulation in blackworms (<em>Lumbriculus variegatus</em>), exposed to the sediments for 28 days. Sediments were from Cleveland Harbor, Ashtabula Harbor (Ohio, USA), and Buffalo River (New York, USA). The sediment from Ashtabula was amended with activated carbon (AC). Using lipid-polymer partition coefficients, the polymers were able to estimate actual bioaccumulation in worms, with close to a 1:1 relationship and r<sup>2</sup> = 0.94. If lipid normalized worm bioaccumulation was compared to equilibrated PDMS concentrations, there was a 20:1 ‘off-set’ (lipid concentration ≈ 20 × PDMS concentration), but the relation was still strong (r<sup>2</sup> = 0.87). Different doses of AC were mixed into Ashtabula sediment in the laboratory, corresponding to 1 %, 10 %, and 100 % of the native total organic carbon (TOC). Based on PCB concentrations in DC silicone, a target AC dose equal to 10 % of the TOC would substantially reduce (∼62 %) bioaccumulation of the more hydrophobic PCBs (log octanol–water partition coefficient > 6) from Ashtabula Harbor dredged material. Widespread AC amendment to surficial sediment of the eastern basin of Lake Erie may reduce the thermodynamic pressure of PCBs from that sediment source and allow for a continued decline in fish tissue concentrations.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102582"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687527","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

Turbidity associated with the beneficial placement of dredged sediment in the dynamic littoral zone at Fairport Harbor, Ohio 浊度与疏浚泥沙在俄亥俄州费尔波特港动态沿岸带的有利位置有关

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2025-02-07 DOI: 10.1016/j.jglr.2025.102533

Douglas R. Krafft , Jonathan M. Waddell , Karen G. Keil , Brett A. Hayhurst , Brian C. McFall , James P. Selegean

{"title":"Turbidity associated with the beneficial placement of dredged sediment in the dynamic littoral zone at Fairport Harbor, Ohio","authors":"Douglas R. Krafft , Jonathan M. Waddell , Karen G. Keil , Brett A. Hayhurst , Brian C. McFall , James P. Selegean","doi":"10.1016/j.jglr.2025.102533","DOIUrl":"10.1016/j.jglr.2025.102533","url":null,"abstract":"<div><div>The nearshore placement of sediments dredged via maintenance of navigation channels is a cost-effective management solution which offers myriad benefits that can include shoreline protection and habitat restoration. Benefits can be offset by concerns due to potential effects on the ecosystem from turbidity generated during placement. This study investigates the turbidity and geomorphic response of dredged sediment placed within the dynamic littoral zone of Lake Erie. Turbidity was measured at nine locations before, during, and after nearshore dredged material placement, and bathymetry was measured in four surveys to capture the effects of placing 39,400 m<sup>3</sup> of material from Fairport Harbor, Ohio. Nearshore turbidity measurements collected before dredging occurred could be explained using wave data, which provided an estimate for expected background turbidity during and after dredging. These wave models continued to fit measured turbidity data well during and after dredged material placement and indicate sediment placement did not significantly increase turbidity at any of the monitoring locations. Bathymetry surveys indicate sediment was placed within the active littoral zone and may have contributed to accretion along the onshore edge of the pre-existing bar. These observations indicate that nearshore placement of dredged material in this environment is aligned with natural sediment movement in the littoral zone, with minimal to negligible generation of turbidity beyond what occurs naturally.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102533"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687532","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

Foredune-ridge development along an urban pocket beach, Montrose Dunes Natural Area, southwestern Lake Michigan 沿着城市口袋海滩，蒙特罗斯沙丘自然区，西南密歇根湖的前山岭发展

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2024-10-02 DOI: 10.1016/j.jglr.2024.102449

C.R. Mattheus

{"title":"Foredune-ridge development along an urban pocket beach, Montrose Dunes Natural Area, southwestern Lake Michigan","authors":"C.R. Mattheus","doi":"10.1016/j.jglr.2024.102449","DOIUrl":"10.1016/j.jglr.2024.102449","url":null,"abstract":"<div><div>While foredune geomorphology has been studied along many Great Lakes coastlines, little attention has been given to the development and evolution of foredune ridges along engineered ‘pocket’ beaches, which are common along many urban lakefronts of the region. This paper reports on the recent morphodynamics of Montrose Beach, the largest of Chicago’s engineered coastal embayments, with emphasis on its ‘Dunes Natural Area.’ A post-2020 period of beach recovery occurred after 2013–2020 lake-level rise of >1.5 m, which was accompanied by shoreline recession and overwash-induced backshore accretion. The influx of sand into the urban embayment during this time facilitated post-2020 beach recovery with lake-level fall. This phase of beach expansion was marked by the formation of three distinct, parallel berm lines that have become vegetated and functioned as focal points for eolian accretion. Undisturbed by grooming and other beach-management activities, the Dunes Natural Area continues to be influenced by lake-level changes and storms. Vegetative establishment and eolian sand trapping, upon disconnect from active reworking along the shoreline, have increased the expression of linear topographic highs. Seasonal ridgelines along natural beach environments, including barrier spits, tend to undergo reworking prior to such stabilization. Insights from Montrose Beach provide coastal managers with up-to-date information on important geomorphic developments at Chicago’s most popular beach destination, whose Dunes Natural Area provides habitat for the endangered Great Lakes piping plover. Understanding its geomorphic trajectory can help inform coastal resiliency planning, here and elsewhere, to protect valuable ecosystems and infrastructure within the urban coastal landscape.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102449"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687394","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

Frequency and duration of weak thermal stratification and hypoxia in the shallow western basin of Lake Erie 伊利湖西部浅层盆地弱热分层和缺氧的频率和持续时间

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2025-05-06 DOI: 10.1016/j.jglr.2025.102596

Yulong Kuai, Mathew G. Wells

{"title":"Frequency and duration of weak thermal stratification and hypoxia in the shallow western basin of Lake Erie","authors":"Yulong Kuai, Mathew G. Wells","doi":"10.1016/j.jglr.2025.102596","DOIUrl":"10.1016/j.jglr.2025.102596","url":null,"abstract":"<div><div>Polymictic lakes are not always continuously mixed; they often experience alternating periods of mixing and weak stratification. The shallow western basin of Lake Erie is one example of a polymictic basin where the frequency of mixing has important consequences for water quality. In this study, we capture high-frequency data from the summers of 2021, 2022, and 2023, including water temperature, dissolved oxygen (DO), and water current velocity. This dataset allows us to show that hypoxic events (<2 mg/L) are triggered by episodes of weak stratification in Pigeon Bay, in western Lake Erie. Our five sampling sites in Pigeon Bay were located 50 m to 20 km from an important nearshore municipal water intake that supplies drinkable water to ∼66,800 residents and to the second largest greenhouse cluster in the world. Between June and September in these 3 years, we found that Pigeon Bay was stratified with a vertical temperature difference above 2 °C, for respectively 45 % (2021), 54 % (2022), and 25 % (2023) of the time. Significantly, all the hypoxic events were associated with stratified events. During the sampling periods, stratified events and hypoxic events were induced by either 1) local surface heating or 2) advection of hypolimnetic water from central Lake Erie. The majority of the hypoxic events in Pigeon Bay (83 % in 2021, 86 % in 2022, and 67 % in 2023) were associated with the horizontal transport of cold water that originated over 20 km from the central basin of Lake Erie.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102596"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687610","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

Mapping Michigan’s historical coastlines 绘制密歇根历史上的海岸线

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2025-02-14 DOI: 10.1016/j.jglr.2025.102511

Ryan A. Williams, Daniel J. Lizzadro-McPherson, Guy Meadows

{"title":"Mapping Michigan’s historical coastlines","authors":"Ryan A. Williams, Daniel J. Lizzadro-McPherson, Guy Meadows","doi":"10.1016/j.jglr.2025.102511","DOIUrl":"10.1016/j.jglr.2025.102511","url":null,"abstract":"<div><div>A recently completed study has created and documented the first comprehensive compilation of spatio-temporal shoreline change for a significant portion of Lakes Michigan, Huron and Superior with historical snapshots dating back to 1938. In total, more than 4100 km was mapped at sufficient fidelity to allow resolution at the individual property owner level, allowing property owners, communities, regional managers and planners as well as regulatory agencies to directly observe not only natural changes to shorelines, but also anthropogenic impacts associated with shoreline hardening. Products produced by this study are publicly accessible via a geospatial data portal, and include historical aerial photography mosaics, historical shoreline and bluff line positions, long-term shoreline rate of change analysis input and outputs, and an interactive web-based viewer incorporating these products with other complementary datasets. Long-term rate of change analyses found that while some areas of Lakes Michigan and Huron exhibited isolated rates of recession greater than 1 m-per-year (m/yr), the majority of the shorelines were stable over the 82 years analyzed, with Lake Superior exhibiting the most stability (85 %), followed by Lake Huron (65 %), while Lake Michigan exhibited the lowest percentage of stable shorelines (52 %). Additionally, analysis of short-term rates-of-change shows the potential to detect shoreline hardening based on the variance between a transect’s short-term and long-term rates-of-change.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102511"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687517","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

Prevalence and potential for biological effects of several chemicals of interest in Lake Superior tributaries 苏必利尔湖支流几种重要化学物质的流行及其潜在生物效应

IF 2.4 3区环境科学与生态学

Journal of Great Lakes Research Pub Date : 2025-08-01 Epub Date: 2025-06-12 DOI: 10.1016/j.jglr.2025.102608

Sophia LaFond-Hudson , Matthew A. Pronschinske , Sarah M. Elliott , Steven R. Corsi

{"title":"Prevalence and potential for biological effects of several chemicals of interest in Lake Superior tributaries","authors":"Sophia LaFond-Hudson , Matthew A. Pronschinske , Sarah M. Elliott , Steven R. Corsi","doi":"10.1016/j.jglr.2025.102608","DOIUrl":"10.1016/j.jglr.2025.102608","url":null,"abstract":"<div><div>Lake Superior is typically assumed to have excellent water quality, but its tributaries have been understudied for contaminants relative to other Great Lakes. This study monitored polycyclic aromatic hydrocarbons (PAHs), alkylphenols (AP) and alkylphenol ethoxylates (APEs), bisphenols, and neonicotinoid pesticides in 18 sites on 17 United States tributaries to Lake Superior in 2022. Contaminants were analyzed from 54 surface water and 17 stream bed sediment samples. PAHs were the most prevalent contaminant class. Among 17 PAHs in 17 samples (289 instances), 71% were positive detections. Surface water samples were not analyzed for PAHs. Next, among 4 APs and APEs analyzed, 35% of sediment sample instances and 21% of instances in 54 water samples were positive detections. Bisphenol analogues were detected in 2% of sediment sample instances and 4% of water sample instances. Bisphenol A (BPA) was not quantified due to field blank contamination, but bisphenol AF (BPAF), bisphenol E (BPE), bisphenol F (BPF), and bisphenol S (BPS) were detected in environmental samples. Neonicotinoids were detected in 0.5% of sediment sample instances and 0.4% of water samples instances. Low detection frequencies for contaminants precluded analyses with watershed land use characteristics, but four sites (Tischer Creek, Miller Creek, Carp River and Iron River) emerged as locations with relatively elevated contaminant concentrations. Comparison of concentrations with ToxCast and other water quality guidelines suggested potential for biological effects from some samples. This study provides a baseline of low contaminant prevalence in Lake Superior tributaries while identifying a few locations that may warrant further monitoring.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 4","pages":"Article 102608"},"PeriodicalIF":2.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687602","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