Journal of Great Lakes Research最新文献

{"title":"Predicting the response of fish populations to changes in river connectivity using individual-based models","authors":"Shane Flinn ,&nbsp;Travis O. Brenden ,&nbsp;Kelly Robinson","doi":"10.1016/j.jglr.2024.102463","DOIUrl":"10.1016/j.jglr.2024.102463","url":null,"abstract":"<div><div>Barrier removal restores physical stream processes and improves accessibility of critical habitats to migratory fishes. Although increasing connectivity benefits stream systems and migratory fishes, barrier removals may also lead to increased production of undesirable or invasive migratory species, as well as myriad other concerns (e.g., reduced recreational opportunities). Few studies have predicted how migratory fish populations will respond to enhanced fish passage, despite being a critical step in the decision-making process. We developed an individual-based model framework to forecast the response of migratory fishes to changes in connectivity and applied the framework to six species under multiple fish passage scenarios for the FishPass project on the Boardman River, MI, which outlets into Lake Michigan. Population response to barrier removal was species-specific and varied based on initial population size and distribution within the watershed, number of fish passed upstream, and species life history traits. Species restricted to below the barrier prior to removal benefitted most; non-native species were found to have greater production potential under full passage scenarios than native Great Lakes species. With increasing passage of non-native Pacific salmonids, steelhead <em>Oncorhynchus mykiss</em> surpassed brook trout <em>Salvelinus fontinalis</em> as the system’s dominant species. Our results will inform decision-makers on management alternatives for fish passage on the Boardman River and our model framework can be modified, updated, and applied to additional river systems as more barrier removal projects are conducted in the future.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102463"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129455","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":"Biogeographic barriers are differentially permeable based on traits: Movement of hypoxia tolerant mormyrid fish in the Lake Victoria basin","authors":"David A.G.A. Hunt ,&nbsp;Quinn Thomas ,&nbsp;Shelby B. Clarke ,&nbsp;Lauren J. Chapman","doi":"10.1016/j.jglr.2024.102485","DOIUrl":"10.1016/j.jglr.2024.102485","url":null,"abstract":"<div><div>Lake Nabugabo is a small satellite lake separated from Lake Victoria by hypoxic swamps that impose a biogeographic barrier to fish assemblages. Some species occur exclusively in Nabugabo while others show high differentiation across this barrier, yet air-breathing fishes show nearly zero genetic differentiation between the two lakes. We hypothesize that hypoxia-tolerant fishes, unlike other non-air-breathing species, would have similarly low genetic differentiation across the barrier. We used pooled RAD-seq to examine the degree of genetic differentiation in two species of non-air-breathing but hypoxia-tolerant mormyrid fishes, <em>Marcusenius victoriae</em> and <em>Petrocephalus degeni</em>. Other non-air-breathing fishes have been shown to have FST values as low as 0.05 but mostly between 0.10 and 0.20; however, we discovered that the genetic differentiation in our focal species was very low, with FST values between 0.02 and 0.04, making them much more comparable to air-breathing fishes with FST values of near zero. We conclude that this and other analogous barriers should be understood as differentially permeable depending on the traits of the organisms crossing them, such as hypoxia tolerance in this case.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102485"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129450","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":"Watershed inputs of suspended sediment drive patterns of total phosphorus in Chequamegon Bay, Lake Superior","authors":"Matthew J. Hudson ,&nbsp;Matthew J. Cooper ,&nbsp;Amanda K. Suchy ,&nbsp;Peter S. Levi ,&nbsp;Bridget R. Thornburg ,&nbsp;Paige J. Penningroth ,&nbsp;Randy A. Lehr","doi":"10.1016/j.jglr.2024.102444","DOIUrl":"10.1016/j.jglr.2024.102444","url":null,"abstract":"<div><div>Lake Superior is considered the least anthropogenically stressed and has the lowest offshore phosphorus (P) concentrations of the five Laurentian Great Lakes. However, nearshore habitats in Lake Superior are showing evidence of nutrient related stress. We examined drivers of total P dynamics in Chequamegon Bay, a shallow embayment in southwestern Lake Superior located in a region of the Laurentian Great Lakes that is primarily forested with low human development. Over a nine-year period (2014–2022) we measured total and soluble reactive phosphorus (TP and SRP, respectively), total suspended solids (TSS), and chlorophyll-<em>a</em> (Chl-<em>a</em>) at 12 locations distributed across Chequamegon Bay. Path analysis revealed that TP in this region of Lake Superior is largely sediment bound and driven by watershed inputs of suspended sediment. SRP and Chl-<em>a</em> make up only a small portion of TP. TP and TSS were highly correlated, with a stronger correlation at the most nearshore locations and following extreme precipitation events in 2016 and 2018. TP and Chl-<em>a</em> had a weak positive correlation at low TP concentrations, and lack of correlation at high TP concentrations. This suggests that despite high TP inputs from runoff events, Chl-<em>a</em> response was minimal, likely due to low light availability and limited bioavailability of sediment-bound P. Understanding conditions where episodic inputs of TP could contribute to the reactive P pool and how hydrodynamics affect biogeochemical processes and algal response to nutrient inputs are critical to understanding how an expected increase in extreme events will influence nearshore water quality in large lakes.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102444"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129560","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":"Lake Superior fish community and fisheries, 2001–2022: An era of stability","authors":"Cory A. Goldsworthy ,&nbsp;Dray D. Carl ,&nbsp;Shawn P. Sitar ,&nbsp;Michael J. Seider ,&nbsp;Mark R. Vinson ,&nbsp;Ian Harding ,&nbsp;Thomas C. Pratt ,&nbsp;Paul P. Piszczek ,&nbsp;Eric K. Berglund ,&nbsp;Samuel B. Michaels ,&nbsp;Jessica M. Barber","doi":"10.1016/j.jglr.2024.102414","DOIUrl":"10.1016/j.jglr.2024.102414","url":null,"abstract":"<div><div>Lake Superior is the least anthropogenically impacted of the Laurentian Great Lakes ecosystems, yet dramatic changes to the fish community are evident. Previous published works chronicled those changes and the efforts to rehabilitate the fish community through the year 2000. Here, we review through the year 2022, where post-rehabilitation stability was driven by lean lake trout (<em>Salvelinus namaycush namaycush)</em> as the most abundant piscivore in nearshore waters, siscowet lake trout (<em>Salvelinus namaycush siscowet)</em> as the most abundant piscivore in offshore waters, and a healthy, intact assemblage of native prey species, which created ecological redundancies and helped stabilize the food web. Stocking of non-native salmonines was reduced 74%, and populations of Chinook salmon (<em>Oncorhynchus tshawytscha)</em> and coho salmon (<em>Oncorhynchus kisutch)</em> were maintained through natural reproduction. Despite reduced stocking, yield from recreational fisheries was stable. Likewise, developments in population modeling led to evaluations and refinement of management strategies that helped create stability for lake trout, lake whitefish (<em>Coregonus clupeaformis</em>), and cisco (<em>Coregonus artedi</em>) fisheries. With lake trout rehabilitation achieved, focus shifted toward rehabilitation of native brook trout (<em>Salvelinus fontinalis</em>), lake sturgeon (<em>Acipenser fulvescens</em>), and walleye (<em>Sander vitreus</em>). Despite continued control efforts, sea lamprey (<em>Petromyzon marinus</em>) abundance increased considerably, and estimates of fish killed by lampreys averaged 2.65 million kg annually. Environmental changes have benefited sea lampreys and fostered thermal habitats more suitable to non-native organisms, posing new challenges for managers and researchers. Nevertheless, the post-rehabilitation stability in the contemporary fish community will help provide resilience to future perturbations in the ecosystem.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102414"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187336","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":"Lake Superior: Current conditions, trends, and emerging threats – Foreword to the special section","authors":"Kaitlin L. Reinl ,&nbsp;Ellen M. Coffman ,&nbsp;Thomas P. Hollenhorst ,&nbsp;Cory A. Goldsworthy ,&nbsp;Joel C. Hoffman","doi":"10.1016/j.jglr.2024.102502","DOIUrl":"10.1016/j.jglr.2024.102502","url":null,"abstract":"<div><div>Lake Superior is one of the five Laurentian Great Lakes and the largest lake in the world by surface area. Lake Superior and its surrounding watershed support a wide range of species, provide a wealth of ecosystem services, and support a robust economy, much of which is reliant on the health of the ecosystem. Though Lake Superior continues to lead the other Laurentian Great Lakes in condition and quality, it has also undergone significant changes including chemical pollution, invasive species, and harmful algal blooms (HABs). The lake is also sensitive to climate change, with rapidly warming water temperatures, significant nutrient input from extreme storm events, and changes to habitat and food web structure, among other impacts. Understanding the current conditions, trends, and emerging threats to Lake Superior from local to ecosystem scales allows us to better manage the lake now and prepare for the future. This <em>Journal of Great Lakes Research</em> special section features a wide range of research, capturing the status of Lake Superior and providing insight to current and future stressors. Further, this issue includes results from the 2021 Lake Superior Cooperative Science and Monitoring Initiative field season and other collaborative efforts to better understand and protect Lake Superior.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102502"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129446","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":"Microplastics in freshwater copepods of Lake Baikal","authors":"Pinjia Yang ,&nbsp;Rei Yamashita ,&nbsp;Hiroshi Ogawa ,&nbsp;Natalia G. Sheveleva ,&nbsp;Olga G. Penkova ,&nbsp;Masumi Yamamuro ,&nbsp;Marianne V. Moore","doi":"10.1016/j.jglr.2024.102495","DOIUrl":"10.1016/j.jglr.2024.102495","url":null,"abstract":"<div><div>Little is known about the ingestion or retention of microplastic particles (MPs) by freshwater copepods in nature or in the laboratory. Yet copepods dominate zooplankton biomass in large, oligotrophic lakes where they occupy a critical trophic position, shunting energy from the planktonic and microbial food webs to higher trophic levels. We collected pelagic copepods from Lake Baikal, Siberia where the concentration of MPs is high relative to other large lakes with no large, urbanized areas near its shores. We quantified microplastic (MP) ingestion incidence by the copepods and describe the shape, size, color, and polymer composition of ingested MPs. Incidence of MPs was more than 10X higher than that reported for copepods in British Columbia lakes and similar to that for copepods from oceanic sites recognized as hotspots of microplastic contamination. The high incidence value might be due to our detection of the smaller, more abundant MPs which have often gone undetected in other studies. All ingested MPs were either fibers or fragments; mean MP particle size was 65.2±41.9 µm; transparent MPs were most common; and ingested MPs composed of the high-density polymer polyethylene terephthalate (PET) were the most abundant. Our findings emphasize that calanoid copepods are a potential vector for moving MPs into the pelagic food webs of large, oligotrophic lakes and highlight the importance of investigating MP uptake, retention, and effects by freshwater copepods in nature and the laboratory.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102495"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129458","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":"Regional variability of resource use, trophic position and habitat coupling within Lake Superior","authors":"M.E. Wegher ,&nbsp;A.T. Fisk ,&nbsp;T.B. Johnson ,&nbsp;M.D. Rennie","doi":"10.1016/j.jglr.2024.102457","DOIUrl":"10.1016/j.jglr.2024.102457","url":null,"abstract":"<div><div>Food web characterizations of large lakes have rarely considered spatial variation in resource use or trophic connections among species. This is also true of Lake Superior, the world’s second largest freshwater lake. While instances of habitat coupling in Lake Superior have been documented, the extent to which coupling or resource specialization in this system varies spatially, particularly within a species, remains unknown. To address this, stable isotopes of common fish species and prey were collected and analyzed along a depth gradient at four geographically and bathymetrically distinct regions of Lake Superior; 1099 fish and 60 composite invertebrate samples (separately for zooplankton and benthos) were collected from both deeper regions (Keweenaw and Western Arm) and shallower regions (Nipigon Bay and Whitefish Bay). Benthic and pelagic species of fish and invertebrates were collected to characterize different energy pathways. Within regions and taxa, benthic reliance and trophic position differences across depth strata were large and comparable to those previously observed among species lake wide. Across regions, large within-taxa differences in resource use patterns and trophic position existed at similar depth strata, as well as among taxa. Generally, there was a high reliance on pelagic resources across all fish species with greater benthic resource use observed at medium and deep strata. As expected, higher trophic organisms tended to have greater evidence of benthic-pelagic coupling. Our findings reinforce the need to consider regional variation in resource use and trophic position in large lake systems over broad approaches that can overgeneralize patterns of energy flow.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102457"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129594","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":"Using hydrogeologic context and water budgets to evaluate the potential for groundwater contributions to contaminants in Lake Superior","authors":"Martha G. Nielsen ,&nbsp;Sherry L. Martin","doi":"10.1016/j.jglr.2024.102402","DOIUrl":"10.1016/j.jglr.2024.102402","url":null,"abstract":"<div><div>This study presents a synthesis of the hydrogeology in the U.S. Lake Superior watershed and the contribution of groundwater to the water budget of the U.S. Lake Superior basin. Much of the shoreline of Lake Superior in Minnesota and Michigan is composed of hydrogeologic units contributing very little direct groundwater discharge to the lake. Groundwater in watersheds adjacent to the lake typically flows in short, local flow systems characterized by thin glacial sediments with active groundwater flow in fractured bedrock within the top 60–90 m below land surface. The complex groundwater system in Wisconsin’s Bayfield Peninsula has the largest groundwater reservoir near the lake, characterized by thick sand and gravel glacial deposits and underlying sandstone aquifer. Although these thick sandy glacial deposits are not in direct contact with the lake at the shoreline, groundwater discharge may still be significant via subsurface exposures beyond the shoreline or flow through the underlying sandstone aquifer. Overall, most groundwater in the watershed is contributed as indirect base flow in streams around the lakeshore and comprises about 60 percent of the upland water budget. Direct groundwater flow to the shoreline contributes 2 to 9 percent of the inflow. Identifying possible contamination sources through direct sampling of groundwater would be an inefficient way to detect problems if sources are unknown, particularly for some chemicals of concern such as PFAS, pesticides, PCBs, chloride, and nutrients. Evaluating the chemical characteristics of contamination is also important to consider in evaluating how groundwater may contribute to pollution in Lake Superior.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102402"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129445","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":"Hydraulic characteristics of effective sea lamprey barriers","authors":"Kassandra Reynolds ,&nbsp;Miki Hondzo ,&nbsp;Vaughan Voller ,&nbsp;Daniel P. Zielinski","doi":"10.1016/j.jglr.2024.102489","DOIUrl":"10.1016/j.jglr.2024.102489","url":null,"abstract":"<div><div>A network of 494 lowermost barriers on tributaries of the Laurentian Great Lakes prevents invasive sea lamprey (<em>Petromyzon marinus</em>) from accessing upstream spawning habitat and is critical to the success of the sea lamprey control program. The design goal of purpose-built barriers for sea lamprey control at low-head dams was to maintain a minimum vertical separation of 45 cm between the crest and downstream water level and a 15-cm overhanging lip. Due to physical site constraints limiting barrier design height and fluctuating stream water levels, many barriers cannot meet the design criteria. However, some barriers continue to block the passage of the sea lamprey even when the design criteria are not fulfilled. We conducted a physical modeling study of three sea lamprey barriers of varying historical efficacies to understand the hydraulic characteristics of effective barriers better. Results showed that time-averaged and horizontally averaged streamwise velocity, energy dissipation rate, and eddy length scale in the vertical direction strongly correlate with barrier efficacy. We combined the resulting variables into a dimensionless Barrier number that can be used to categorize barrier efficacy. Ineffective barriers generally had higher Barrier numbers than effective barriers. Our experimental investigation suggests that the fluid flow and turbulence conditions near the riverbed are not as crucial to barrier efficacy as those above the riverbed at 50 % of the crest height. Our work improves understanding of how existing barriers block sea lamprey movement, which could aid in the design of future sea lamprey barriers.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102489"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129453","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":"Simple linear models of coastal setup and seiching behavior across the Laurentian Great Lakes","authors":"Jay Austin","doi":"10.1016/j.jglr.2024.102491","DOIUrl":"10.1016/j.jglr.2024.102491","url":null,"abstract":"<div><div>Storm surges and seiches are two dynamically distinct behaviors of lakes that contribute to coastal sea level fluctuations on short time scales and can have significant societal and ecological impacts. Most of the emphasis in the existing Laurentian Great Lakes literature on storm surges focuses on wind-driven storm surges on Lake Erie, due to their large magnitudes and major population centers at both ends of the lake. On Lake Superior, however, the primary driver of coastal setup is atmospheric pressure gradients, which depress water levels at one end and increase them at the other. Lakes Michigan, Huron, and Ontario are intermediate, and both wind forcing and atmospheric pressure gradients contribute to coastal setup. The primary driver of this difference in response is lake depth, which is explored here using simple linear theory. In addition, lake depth plays an important role in the character of the subsequent seiche response of lakes; in shallow lakes such as Erie, bottom drag can damp out seiching behavior quickly, whereas in deep lakes like Superior, seiches can persist for many oscillations. A survey of large lakes worldwide suggests a wide range of behaviors.</div></div>","PeriodicalId":54818,"journal":{"name":"Journal of Great Lakes Research","volume":"51 1","pages":"Article 102491"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129454","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}