Journal of Great Lakes Research最新文献_第5页

Locally produced fish food pellets yield little evidence as a dietary substrate for net pen-reared Nile tilapia (Oreochromis niloticus) in Lake Victoria, Kenya 在肯尼亚维多利亚湖，当地生产的鱼食颗粒作为网眼养殖尼罗罗非鱼的膳食基质的证据很少

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102686

Dennis Otieno , Job Mwamburi , Lewis Sitoki , Reuben Omondi , Anakalo Shitandi , Bethwell Owuor , George Bullerjahn , Kefa Otiso , R. Michael McKay , Ken Drouillard , NSF-IRES Lake Victoria Research Consortium

Net pen-reared Nile tilapia (Oreochromis niloticus) and samples of fish food provisioned to fish cages were collected from two aquaculture facilities operated in Winam Gulf, Lake Victoria, and another open lake site on Lake Victoria, Kenya. Samples of fish food and net pen-reared fish were analyzed for stable isotopes and total mercury (THg) concentrations. Values of δ¹³C in net-pen fish were 9.4–12.7 ‰ higher compared to values in provisioned food. Values of δ¹⁵N in fish were 5.36–5.66 ‰ above those measured in the provisioned food at two fish cage facilities in Winam Gulf but not significantly different from one another at the open lake facility. Stable isotopes and THg in aquaculture fish from Winam Gulf were compared against wild-caught lower food web samples from the same region. Residues of THg and δ¹⁵N in net-pen fish were similar to wild conspecifics from Winam Gulf. Values of δ¹³C tended to be elevated in net pen-reared fish compared to wild conspecifics but found to be within the range of δ¹³C values measured in lower trophic level freshwater shrimp (Caridina niloticus) collected from diverse locations throughout Winam Gulf. Overall, isotope signatures of net pen-reared fish and food provisioned to cages were dissimilar, whereas stable isotope signatures and THg in net-pen fish resembled patterns observed in wild-caught Nile tilapia and other lower food web items from Winam Gulf. The results imply net pen-reared fish are not benefiting from food provisioning and that aquaculture operators could realize economic benefits and lower their environmental impacts by reducing food provisioning rates.

从维多利亚湖Winam湾的两个水产养殖设施和肯尼亚维多利亚湖的另一个开放湖泊场地收集了网养尼罗罗非鱼（Oreochromis niloticus）和提供给网箱的鱼食样本。分析了鱼食和网笼养殖鱼的稳定同位素和总汞（THg）浓度。网笼鱼体内的δ13C值比饲料中高9.4 ~ 12.7‰。温南湾两个网箱设施的鱼体δ15N值比提供食物的δ15N值高5.36 ~ 5.66‰，而开放湖设施的鱼体δ15N值差异不显著。将温南湾水产养殖鱼类的稳定同位素和THg与同一地区野生捕获的下层食物网样本进行了比较。网笼鱼体内THg和δ15N的残留量与温南湾野生同种鱼相似。与野生异种鱼相比，网圈养殖鱼的δ13C值有升高的趋势，但在整个Winam海湾不同地点采集的低营养级淡水对虾（Caridina niloticus）的δ13C值在范围内。总体而言，笼养鱼和笼养食物的同位素特征不同，而笼养鱼的稳定同位素特征和THg与野生捕获的尼罗罗非鱼和其他来自Winam湾的较低食物网项目相似。结果表明，网笼养殖的鱼类没有从粮食供应中受益，水产养殖经营者可以通过降低粮食供应率来实现经济效益并降低其对环境的影响。

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引用次数: 0

Making aquatic sciences more Diverse, Equitable, Inclusive, and Accessible: Perspectives on how individuals can take action in their professional practice 使水生科学更加多样化、公平、包容和可及：个人如何在其专业实践中采取行动的观点

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102666

Morgan L. Piczak , Cosette Arseneault-Deraps , Ali Shakoor , Gadfly Stratton , Jérôme Marty , Christine L. Madliger , Andrea E. Kirkwood

Achieving Diversity, Equity, Inclusion, and Accessibility (DEIA) in the aquatic sciences has been a chronic challenge, and while recent progress has been made, shifting political and institutional landscapes increasingly jeopardize these crucial efforts. To highlight strategies on how to continue to support DEIA initiatives, the Society of Canadian Aquatic Sciences and the International Association for Great Lakes Research co-hosted a webinar with diverse panelists entitled Making Aquatic Science Spaces More Equitable, Diverse, Inclusive & Accessible: A Panel Discussion. Building on the webinar, we synthesize eight actions individuals in aquatic sciences can take to uphold DEIA values and dismantle barriers: (1) make safety front of mind; (2) embrace complexity and intersectionality; (3) be proactively compassionate and inclusive; (4) identify and remove barriers; (5) engage non-scientific audiences in outreach and public dialogue; (6) be ready to make mistakes and learn from them; (7) be prepared to challenge misinformation; and (8) keep dialogue open about DEIA realities. We have also included narratives which highlight lived experiences of the panelists and how these actions have been implemented in the real world. In the face of growing political and institutional challenges, advancing DEIA in aquatic sciences will increasingly rely on grassroots action, sustained by individual commitment to building a more inclusive and just community.

在水生科学领域实现多样性、公平、包容和可及性（DEIA）一直是一项长期挑战，尽管最近取得了进展，但不断变化的政治和制度格局日益危及这些至关重要的努力。为了突出如何继续支持DEIA倡议的策略，加拿大水生科学学会和国际大湖研究协会与不同的小组成员共同举办了一场网络研讨会，题为“使水生科学空间更加公平，多样化，包容性和可及性：小组讨论”。在网络研讨会的基础上，我们综合了水生科学个人可以采取的八项行动，以维护DEIA价值观并消除障碍：(1)将安全放在首位；(2)拥抱复杂性和交叉性；(3)积极同情和包容；(4)识别和消除障碍；(5)让非科学受众参与外展和公众对话；(6)准备好犯错误并从中吸取教训；(7)准备好挑战错误信息；(8)保持关于DEIA现实的公开对话。我们还包括了突出小组成员的生活经历以及这些行动如何在现实世界中实施的叙述。面对日益增长的政治和体制挑战，推进水产科学领域的DEIA将越来越依赖于基层行动，并由个人承诺建设一个更加包容和公正的社区来维持。

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引用次数: 0

Pace-of-life and population structure assessment of invasive round goby in the upper St. Lawrence River 圣罗伦斯河上游入侵圆虾虎鱼的种群结构及生活水平评价

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102653

Anna L. Haws , John M. Farrell

The Eurasian round goby (Neogobius melanostomus) is one of the most prevalent invasive fish species globally, with extensive non-native populations in diverse habitats of North America and Europe. Round goby invasions have exhibited context-specific responses in their life history traits (e.g., size and age structure, growth, maturation, spawning period, and mortality). Information on their evolutionary trajectories in different systems is needed to better understand the drivers behind their variable levels of success among sections of their introduced range. In the upper St. Lawrence River (USLR), round gobies are known to achieve some of the largest body sizes recorded among freshwater populations, breaking upheld generalizations of lower growth potential in freshwater environments. In this study, we applied fisheries assessment methods to evaluate their population metrics in the USLR and aggregate reported population traits from the literature to provide a basis for comparison. We observed round goby maturation at 1–2 years of age, 74 % annual mortality, a 5-year lifespan, and body sizes that exceed other North American populations. This study indicates that ecological conditions in the USLR are highly favorable for round gobies, and available resources can support attaining large body size while also promoting early allocation into reproduction.

欧亚圆虾虎鱼（Neogobius melanostomus）是全球最常见的入侵鱼类之一，在北美和欧洲的各种栖息地都有广泛的非本地种群。圆虾虎鱼入侵在其生活史特征（如大小和年龄结构、生长、成熟、产卵期和死亡率）中表现出特定的环境反应。我们需要了解它们在不同系统中进化轨迹的信息，以便更好地理解它们在不同引入范围内不同程度成功背后的驱动因素。在圣劳伦斯河上游（USLR），圆虾虎鱼的体型是淡水种群中最大的，打破了淡水环境中生长潜力较低的普遍看法。在本研究中，我们运用渔业评估方法来评估USLR中它们的种群指标，并汇总文献中报道的种群特征，为比较提供依据。我们观察到圆虾虎鱼在1-2岁时成熟，年死亡率为74%，寿命为5年，体型超过其他北美种群。该研究表明，美国海洋保护区的生态条件对圆虾虎鱼非常有利，现有资源可以支持圆虾虎鱼获得较大的体型，同时也可以促进早期分配到繁殖中。

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引用次数: 0

Changes in phosphorus concentration and flux from 2011 to 2023 in major U.S. tributaries to the Laurentian Great Lakes 2011年至2023年美国劳伦森五大湖主要支流磷浓度和通量的变化

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102669

Dustin W. Kincaid , Matthew W. Diebel , Erin E. Bertke , Donald B. Bonville , Greg F. Koltun , Dale M. Robertson , Luke C. Loken

Reducing phosphorus (P) flux to the Great Lakes is critical for improving water quality and controlling eutrophication. We used 13 water years (2011–2023) of U.S. Geological Survey data from 24 major U.S. tributaries (representing 47% of the U.S. Great Lakes watershed area) to evaluate temporal changes in orthophosphate (PO₄-P) and total P (TP) using Weighted Regressions on Time, Discharge, and Season. We assessed actual and flow-normalized P concentrations and fluxes. Between 2011 and 2023, P concentrations and fluxes declined in many tributaries, although the extent and significance of these declines varied. Decreases were more common and statistically likely for TP than PO₄-P, and several high-loading watersheds had modest or non-significant changes. Flow-normalized PO₄-P:TP flux ratios increased in over half the tributaries, suggesting that even where P reductions occurred, reductions in the more bioavailable P fraction were proportionally smaller. Actual P fluxes were strongly correlated with streamflow, and year-to-year variability in actual fluxes was, on average, three times greater than variability related to trends in flow-normalized fluxes. This underscores the role of hydrology in modulating P export and highlights how changing precipitation and runoff patterns can obscure or counteract management progress. Spring accounted for the largest share of annual P flux in most tributaries, though many showed declining spring contributions. Our basin-wide analysis reveals that while management efforts may have yielded progress in reducing TP in many watersheds, additional strategies would be needed to address PO₄-P reductions and account for changing hydrology, especially in high-contributing watersheds.

减少五大湖的磷通量对改善水质和控制富营养化至关重要。我们使用了13个水年（2011-2023年）的美国地质调查局数据，这些数据来自美国24条主要支流（占美国五大湖流域面积的47%），利用时间、流量和季节加权回归来评估正磷酸盐（PO4-P）和总磷（TP）的时间变化。我们评估了实际和流量标准化的P浓度和通量。在2011年至2023年期间，许多支流的磷浓度和通量下降，尽管这些下降的程度和意义有所不同。与PO4-P相比，TP的降低更常见，在统计学上也更有可能，几个高负荷流域的变化不大或不显著。流量标准化的PO4-P:TP通量比在一半以上的支流中增加，这表明即使在磷减少的地方，生物可利用的磷部分的减少比例也较小。实际磷通量与河流流量密切相关，实际通量的年变异性平均比与流量归一化通量趋势相关的变异性大3倍。这强调了水文学在调节磷输出中的作用，并强调了降水和径流模式的变化如何模糊或抵消管理进展。春季在大部分支流年P通量中占最大份额，但许多支流的春季贡献呈下降趋势。我们的全流域分析表明，虽然管理努力可能在许多流域减少总磷方面取得了进展，但还需要采取额外的策略来解决PO4-P的减少问题，并考虑到水文变化，特别是在高贡献流域。

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引用次数: 0

Daily Detroit river total phosphorus loads to Lake Erie from water treatment plant turbidity 每日底特律河总磷负荷伊利湖从水处理厂浊度

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102701

Donald Scavia , Timothy J. Calappi

The Great Lakes Water Quality Agreement established the western and central basin of Lake Erie total phosphorus (TP) target of 6000 metric tons per year. Models that develop load-response curves showed that daily loads and annual loads of the Detroit River are important. Direct measurements near the river mouth are difficult due to Lake Erie seiches and surface oscillations. Therefore, an alternative approach for estimating daily loads is needed. We show that existing turbidity-TP relationships can be applied to water treatment plant (WTP) turbidity to develop daily load estimates by those responsible for routine monitoring. We show how turbidity measured at WTP are comparable to those measured in the river. WTP uses an existing infrastructure that is of high temporal resolution, so agencies charged with determining loads may use this network. By using daily water flux and the WTP-based observations, daily TP concentration estimates and loads are applied upstream near Belle Isle and downstream near Fighting Island. By adding the respective loads to the river, we obtain daily TP flux estimates to Lake Erie. Due to well known turbidity gradients, the Windsor WTP needs an adjustment to better reflect turbidity in the entire river. After adjusting, the summed daily rates to Lake Erie from both stations are comparable each other and to other rates. We also show the 2019–2024 annual averages are approximately 15 % greater than that estimated by the Environmental Protection Agency (EPA) and Environment and Climate Change Canada (ECCC). These daily and annual load estimates can be useful augmentations of more traditional monitoring efforts that provide only annual loads.

《五大湖水质协定》将伊利湖西部和中部流域的总磷（TP）目标定为每年6000公吨。建立荷载-响应曲线的模型表明，底特律河的日荷载和年荷载是重要的。由于伊利湖的淤塞和水面振荡，在河口附近的直接测量是困难的。因此，需要一种替代方法来估计每日负载。我们表明，现有的浊度- tp关系可以应用于水处理厂（WTP）浊度，由负责日常监测的人员开发每日负荷估计。我们展示了在WTP测量的浊度如何与在河流中测量的浊度相比较。WTP使用现有的具有高时间分辨率的基础设施，因此负责确定负载的代理机构可以使用该网络。利用日水通量和基于wtp的观测资料，对Belle岛上游和Fighting岛下游的TP浓度和负荷进行了估算。通过将各自的负荷添加到河流中，我们得到了伊利湖的日总磷通量估计。由于众所周知的浊度梯度，温莎WTP需要调整，以更好地反映整个河流的浊度。调整后，两个站点到伊利湖的总日费率相互比较，并与其他费率比较。我们还显示，2019-2024年的年平均值比环境保护局（EPA）和加拿大环境与气候变化局（ECCC）的估计高出约15%。这些每日和年度负荷估计可以作为传统监测工作的有用补充，而传统监测工作只提供年度负荷。

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引用次数: 0

Evaluation of repeat bathymetric surveys on water surface elevations on the Saint Clair River 圣克莱尔河水面高程的重复水深测量评价

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2024.102403

Timothy J. Calappi , Jonathan M. Waddell , Matthew A. McClerren , Andrew D. Gronewold , Jesse E. McNinch , James P. Selegean

The Great Lakes contain 20 percent of the world’s fresh surface water, a drinking source for 30- million people. The system is vital to manufacturing, largely due to efficient transportation of commodities and an abundance of natural resources. Understanding the water balance and predicting future water levels is important for many industries including commercial navigation, the tourist industry, hydropower and shoreline property owners, just to name a few. These predictions require an understanding of both the hydroclimate drivers across the Great Lakes as well as physical changes in the connecting channels that pass water between each lake. Since the International Upper Great Lakes Study began, the St. Clair River has been the topic of conveyance change investigations. This study tests the sensitivity of water surface elevations to small differences in bathymetric changes. Greater than 80 percent of the surveyed points had less than 0.24 m of change between any combination of survey years. Repeat bathymetric surveys collected in 2007, 2012 and 2021, along with hydrodynamic modeling, find changes in water surface elevations associated with bathymetric change are on the sub-centimeter scale. These changes are put into perspective and compared to known anthropogenic and naturally occurring conveyance changes. While these surveys represent a short duration in the observed water level record of the Great Lakes, they represent an important documentation of the geomorphic state of the St. Clair River. These changes can and should be compared to similar future surveys of the river over longer engineering and geomorphic timescales.

五大湖拥有世界上20%的淡水，是3000万人的饮用水源。该系统对制造业至关重要，主要是由于商品的高效运输和丰富的自然资源。了解水平衡和预测未来水位对许多行业都很重要，包括商业航运、旅游业、水电和海岸线财产所有者，仅举几例。这些预测既需要了解五大湖的水文气候驱动因素，也需要了解在各湖之间传递水的连接通道的物理变化。自国际上五大湖研究开始以来，圣克莱尔河一直是运输变化调查的主题。这项研究测试了水面高度对水深变化的微小差异的敏感性。超过80%的调查点在任何调查年份组合之间的变化小于0.24米。2007年、2012年和2021年收集的重复测深数据以及水动力学模型发现，与测深变化相关的水面高度变化在亚厘米尺度上。将这些变化与已知的人为和自然发生的运输变化进行比较。虽然这些调查在五大湖观测到的水位记录中只代表了短暂的时间，但它们代表了圣克莱尔河地貌状态的重要文件。这些变化可以而且应该与未来类似的河流工程和地貌调查进行比较。

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引用次数: 0

Larval fish community of the urbanized Chicago River 城市化的芝加哥河的幼鱼群落

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102662

Austin Happel

Urbanization has drastically altered the riverine systems upon which cities once depended, leading to significant declines in suitable freshwater habitat and, consequently, biodiversity. The Chicago River exemplifies this transformation, with the added distinction of having been engineered to flow across a continental divide. Over the past 50 years, improvements in water quality have been closely associated with a transition to a fish community that is unexpectedly high in species richness. The goal of this research was to assess which fish species spawn in the Chicago River by capturing larvae. Light trapping conducted in the North and South Branches of the Chicago River between 2020 and 2022 yielded 2211 larval fish representing 24 species, identified using 16S rRNA Sanger sequencing. Peak abundance of larvae occurred in July, coinciding with water temperatures around 23 °C. Species considered pollution-intolerant were more common in the South Branch, whereas pollution-tolerant species were common in the North Branch. Larvae from families Atherinopsidae, Centrarchidae, and Leuciscidae (i.e., native minnows, formerly in the family Cyprinidae) were more abundant in the South Branch, suggesting that a combination of suitable substrate, submerged vegetation, and water quality must be present, potentially in backwater areas such as unused barge slips. As habitat restoration activities continue, more species are likely to exhibit successful reproduction in the system. These findings suggest that other heavily modified urban river systems may support resilient, biodiverse fish communities.

城市化极大地改变了城市曾经赖以生存的河流系统，导致适合的淡水栖息地显著减少，从而导致生物多样性减少。芝加哥河是这种转变的例证，它的另一个特点是被设计成流经大陆分水岭。在过去的50年里，水质的改善与鱼类群落的过渡密切相关，鱼类群落的物种丰富程度出乎意料。这项研究的目的是通过捕获幼虫来评估哪些鱼类在芝加哥河产卵。在2020年至2022年期间，在芝加哥河的南北分支进行了光捕获，用16S rRNA桑格测序鉴定出了代表24个物种的2211条幼鱼。幼虫的丰度高峰出现在7月，水温在23°C左右。被认为不耐污染的物种在南支中更为常见，而污染耐受的物种在北支中更为常见。来自Atherinopsidae， Centrarchidae和Leuciscidae科的幼虫（即本地鲦鱼，以前属于鲤科）在南支的数量更多，这表明一定存在合适的基质，淹没植被和水质的组合，可能在未使用的驳船等回水地区。随着生境恢复活动的继续，更多的物种可能在该系统中成功繁殖。这些发现表明，其他经过大量改造的城市河流系统可能支持有弹性的、生物多样性的鱼类群落。

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引用次数: 0

Lake depth and light conditions alter Mysis vertical distributions 湖泊深度和光照条件改变了湖的垂直分布

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102684

Rosaura J. Chapina , Brian P. O’Malley , Kelly Bowen , Martta L.M. Viljanen , Zachary A. Bess , Daniel L. Yule , Jens C. Nejstgaard , Stella A. Berger , Michael D. Rennie , Michael J. Paterson , Steve A. Pothoven , James M. Watkins , Lars G. Rudstam , Sudeep Chandra , Jason D. Stockwell

Light regulates the vertical migration of many aquatic organisms. Mysis species couple pelagic and benthic habitats in lakes by diel vertical migrations (DVM), transporting energy and nutrients through the water column and food web. Although Mysis are generally assumed to remain on the bottom during the day, some have been observed in the pelagic zone during the day, indicating incomplete benthic-pelagic coupling in some systems. The degree to which light attenuation and lake depth interact to affect occurrence of mysids within the water column during the day is understudied. We used standardized Mysis net sampling in summers 2020 and 2021 across nine north-temperate lakes to test the hypotheses that 1) Mysis remain pelagic during the day at depths with sufficiently low light levels, and 2) pelagic-caught individuals during the day are, on average, smaller than those caught at night. To test these hypotheses, we assessed light, dissolved oxygen (DO), Mysis densities, and size distribution between night and day across bathymetric depths. In deep lakes and darkly colored shallow lakes, Mysis suspended in the water column during the day where light levels decreased to their light avoidance threshold (∼10^-5 to 10^-6 lx). Mysis suspended in the water column during the day were smaller than those collected at night. Further, Mysis were not captured when DO reached levels < 3 mg/L, regardless of light conditions. Our results suggest that benthic-pelagic coupling by Mysis is mediated through light conditions, lake morphometry, and DO conditions, and may include some degree of size-dependent behavior.

光调节许多水生生物的垂直迁移。水生植物通过垂直迁移（diel vertical migration， DVM），在水体和食物网中传递能量和营养。虽然一般认为Mysis在白天停留在海底，但白天在上层海域也观察到一些Mysis，这表明在某些系统中底-上层耦合不完全。在白天，光衰减和湖深相互作用对水柱内蝇蛆发生的影响程度尚未得到充分研究。我们在2020年和2021年夏季对9个北温带湖泊进行了标准化的Mysis网采样，以验证以下假设：1)Mysis在白天在足够低的光照深度保持远洋，2)白天捕获的远洋个体平均比夜间捕获的个体小。为了验证这些假设，我们评估了光、溶解氧（DO）、溶解氧密度以及昼夜在水深之间的大小分布。在深湖和深色浅湖中，Mysis在白天悬浮在水柱中，此时光照水平下降到避光阈值（~ 10-5至10-6 lx）。白天在水柱中悬浮的Mysis小于夜间收集的Mysis。此外，无论光照条件如何，当DO达到3 mg/L水平时，Mysis都不会被捕获。我们的研究结果表明，Mysis的底海耦合是通过光照条件、湖泊形态和DO条件介导的，并且可能包括一定程度的大小依赖行为。

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引用次数: 0

Angler dynamics in the St. Clair-Detroit River System after decades of change 经过几十年的变化，圣克莱尔-底特律河系统的垂钓者动态

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102610

Dana K. Castle , Tracy Galarowicz , Edward F. Roseman , Tracy Claramunt , Justin Chiotti , Robert Dvorak

Habitat and water quality were historically degraded within the St. Clair-Detroit River System (SCDRS). Beginning in 2004, extensive habitat restoration projects were implemented remediating losses of fish spawning beds and shoreline areas. Monitoring of post-restoration activities documented recovering fish populations; however, angler response remains unknown. Extensive creel surveys were conducted pre-restoration (2002–2004), but post-restoration (2012 and later) surveys were intermittent. The goal of this project was to examine both to create a comprehensive picture of the effects of restoration on angling. We calculated catch and harvest rates and inspected answers to supplemental questions collected by state and provincial agencies. We estimated economic impact of angling with a combination of lodging and gas expenses. Post-restoration, catch rates were higher, but harvest rates were variable for Lake St. Clair and the Detroit River. The 2017 open water boat fishery on Lake St. Clair was worth ∼$26 million. Increased fishing opportunities resulting from continued habitat and population recovery are leading to increased catch rates and likely attracting anglers to the area.

圣克莱尔-底特律河水系（SCDRS）的生境和水质在历史上一直在退化。从2004年开始，实施了广泛的栖息地恢复项目，以弥补鱼类产卵床和海岸线地区的损失。监测恢复后的活动，记录鱼类种群的恢复；然而，垂钓者的反应仍然未知。在恢复前（2002-2004年）进行了广泛的网格调查，但恢复后（2012年及以后）的调查是间歇性的。这个项目的目标是研究这两方面，以创建一个全面的画面，恢复对钓鱼的影响。我们计算了捕获量和收获率，并检查了州和省级机构收集的补充问题的答案。我们用住宿和汽油费来估算钓鱼的经济影响。修复后，圣克莱尔湖和底特律河的渔获率较高，但收获率变化较大。2017年圣克莱尔湖的开放水域渔船渔业价值约2600万美元。由于栖息地和种群的持续恢复，捕鱼机会增加，导致捕捞率增加，并可能吸引垂钓者到该地区。

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引用次数: 0

Visioning and conceptual framework for coordinating Great Lakes connecting waters research and monitoring 协调五大湖连接水域研究和监测的设想和概念框架

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Great Lakes Research

Pub Date : 2025-12-01 DOI: 10.1016/j.jglr.2025.102605

Robin L. DeBruyne , Edward F. Roseman , Ashley H. Moerke , Lauren M. Fry , Michael R. Twiss , Samantha N. Tank

The Laurentian Great Lakes are connected via naturally occurring straits and rivers: St. Marys River, Straits of Mackinac, St. Clair-Detroit River System, Niagara River, and the St. Lawrence River. Despite the historical ecological and economic importance of these waters, international agreements (e.g., Great Lakes Water Quality Agreement) only recently explicitly named the Great Lakes Connecting Waters (GLCWs), requiring governments to address the challenges of adequate restoration and protection from historical use and degradation. Standardized research and monitoring activities are needed; however, there is no established mechanism for coordination across the GLCWs. A three-day summit in 2023 convened experts to form the initial framework for a GLCWs Collaborative to increase standardizations and knowledge transfer. Participants drafted a governance structure and priorities following the principles of collective impact but allowed for place-based specificity for local connecting water organizations. Priorities and suggestions for success included: 1) co-development of the collaborative with all rights holders, stakeholders, and surrounding communities; 2) investment in research and technology specific to GLCWs; 3) investment in information transfer and training; 4) increased communication; and 5) better integration into existing Great Lakes research, monitoring, and funding programs. Expanding participation in all local GLCWs organizations with principles of inclusivity was identified as a larger collaborative goal. Next steps in the development of a GLCWs Collaborative include increased communication and formation of working groups and obtaining funding for a dedicated organization to begin supporting activities (communication, facilitation, logistics). By using a deliberate process for establishment, the potentially slower time frame for establishment may result in increased participation and success.

劳伦斯五大湖通过天然的海峡和河流相连：圣玛丽河、麦基诺海峡、圣克莱尔-底特律河系统、尼亚加拉河和圣劳伦斯河。尽管这些水域具有历史上的生态和经济重要性，但国际协议（如《五大湖水质协议》）直到最近才明确地命名为五大湖连接水域（GLCWs），要求各国政府应对充分恢复和保护这些水域免受历史使用和退化的挑战。需要标准化的研究和监测活动；然而，目前还没有建立起协调各全球公约的机制。2023年举行的为期三天的峰会召集了专家，形成了全球环境法协作机制的初步框架，以加强标准化和知识转移。与会者根据集体影响原则起草了治理结构和优先事项，但允许地方连接水组织基于地点的特殊性。成功的优先事项和建议包括：1)与所有权利人、利益相关者和周边社区共同开发协作；2)针对GLCWs的研究和技术投资；3)信息传递和培训投资；4)沟通增加；5)更好地整合现有的五大湖研究、监测和资助项目。根据包容性原则，扩大对所有地方政府间劳工关系组织的参与被确定为一个更大的合作目标。建立GLCWs协作机制的下一步工作包括加强沟通和组建工作组，并为专门的组织筹集资金，开展支持活动（沟通、促进、后勤）。通过采用经过深思熟虑的建立过程，建立的时间框架可能较慢，这可能导致更多的参与和成功。

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