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Wet–dry cycles influence methylmercury concentrations in water in seasonal prairie wetland ponds 干湿循环对季节性草原湿地池塘水中甲基汞浓度的影响
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0168
B. Hall, Sichen Liu, Cameron Hoggarth, L. Bates, S. A. Boczulak, Jamie D. Schmidt, A. Ireson
Methylmercury concentrations [MeHg] in whole water were measured in 28 prairie wetland ponds in central Saskatchewan between 2006 and 2012. Ponds fell into four land use categories (established grass, recent grass, traditional cultivated, and certified organic cultivated) and two water level patterns (“Mainly Wet” ponds stayed wet at least until October and “Mainly Dry” ponds dried up each summer). Despite similar atmospheric Hg deposition, average [MeHg] and proportion of total Hg that was MeHg (%MeHg) were higher in water from ponds surrounded with established grass or organic farming; this trend may be driven by high [MeHg] at one Organic site. A stronger relationship was observed with water level patterns. Average [MeHg] and %MeHg were significantly higher in Mainly Wet ponds compared to Mainly Dry ponds. Higher [MeHg] in Mainly Wet ponds were correlated with much higher dissolved organic carbon (DOC) and sulfate (SO4−2) concentrations and higher specific UV absorbance of DOC. We suggest that prairie wetland ponds may not fit the accepted paradigm that wetlands with high [SO4−2] show inhibition of Hg methylation. Our work suggests controls such as the chemical nature of DOC or redox fluctuations in hydrologically dynamic systems may be important in determining net [MeHg] in these sites.
2006年至2012年间,在萨斯喀彻温省中部的28个草原湿地池塘中测量了整个水中的甲基汞浓度[MeHg]。池塘分为四类土地利用类型(已建成的草地、新近种植的草地、传统种植的草地和经认证的有机种植的草地)和两种水位模式(“主要潮湿”的池塘至少在10月之前保持湿润,“主要干燥”的池塘每年夏天都会干涸)。尽管大气中的汞沉积相似,但在有成熟草地或有机农业的池塘中,水中的平均[MeHg]和总汞的比例(%MeHg)较高;这一趋势可能是由一个有机位点的高[MeHg]所驱动的。观察到与水位模式的关系更强。主要潮湿池塘的平均[MeHg]和%MeHg明显高于主要干燥池塘。主要潮湿池塘中较高的[MeHg]与较高的溶解有机碳(DOC)和硫酸盐(SO4−2)浓度以及较高的DOC比紫外线吸收率有关。我们认为,草原湿地池塘可能不符合公认的范式,即高[SO4−2]湿地对汞甲基化表现出抑制作用。我们的工作表明,DOC的化学性质或水文动力学系统中的氧化还原波动等控制因素可能对确定这些位点的净[MeHg]很重要。
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引用次数: 0
Ecological restoration research in Canada: who, what, where, when, why, and how? 加拿大的生态恢复研究:谁,什么,在哪里,何时,为什么,如何?
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0157
Tim Alamenciak, Dorian Pomezanski, N. Shackelford, S. Murphy, S. J. Cooke, L. Rochefort, Sonia Voicescu, E. Higgs
Much has been achieved by research into ecological restoration as a nature-based solution to the destruction of ecosystems, particularly in Canada. We conducted a national-level synthesis of Canadian restoration ecology research to understand strengths and gaps. This synthesis answers the following questions: Who is studying restoration? What ecosystem types are studied? Where is restoration studied? Which themes has restoration research focused on? Why is restoration happening? And how is restoration monitored and evaluated? We employed systematic searching for this review. Our results show that restoration research is conducted mainly by academics. Forest, peatland, grassland, and lake ecosystem types were the most commonly studied. There was a concentration of research in four provinces (Ontario, Quebec, Alberta, and British Columbia). Research into restoration has changed its thematic focus over time from reforestation to climate change. Legislation was the most common reason given for restoration. Restoration research frequently documented results of less than 5 years of monitoring and included one category of response variable (e.g., plant response but not animal response). Future research could investigate the outcomes of restoration prompted by legislation. At the dawn of the UN Decade on Ecosystem Restoration, this work demonstrates Canada's momentum and provides a model for synthesis in other countries.
特别是在加拿大,通过研究生态恢复作为一种基于自然的解决生态系统破坏的办法,已经取得了很大成就。我们对加拿大的恢复生态学研究进行了国家级综合,以了解优势和差距。这个综合回答了以下问题:谁在研究修复?研究了哪些生态系统类型?修复在哪里进行研究?修复研究关注哪些主题?为什么要进行修复?如何监测和评估恢复?我们对这篇综述进行了系统检索。我们的研究结果表明,修复研究主要是由学术界进行的。森林、泥炭地、草地和湖泊生态系统类型是研究最多的。研究集中在四个省(安大略省、魁北克省、阿尔伯塔省和不列颠哥伦比亚省)。随着时间的推移,对恢复的研究已经将其主题重点从重新造林转变为气候变化。立法是恢复原状最常见的理由。恢复研究经常记录不到5年的监测结果,并包括一类响应变量(例如,植物响应,但不包括动物响应)。未来的研究可以探讨立法推动的恢复效果。在联合国生态系统恢复十年开始之际,这项工作展示了加拿大的势头,并为其他国家的综合提供了一个模式。
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引用次数: 0
COP 15: Crunch time for the world’s biodiversity COP 15:世界生物多样性的关键时刻
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2023-0043
C. Findlay
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引用次数: 1
A simulation-based optimization method for emergency evacuation induced by gas pipeline leakage risk 基于仿真的燃气管道泄漏风险应急疏散优化方法
3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0229
Ling Wang, Xuejiao Chen, Chaofeng Liu, Xingxing Guo, Gang Li, Xiaoran Liu
Long-distance gas pipelines with large diameter and high pressure, on which a leakage induces gas diffusion or fire explosion, may result in major influence to nearby buildings and residents. Safety and rapid evacuation of potentially affected people is a top priority. To analyze the affected areas by disasters and improve evacuation efficiency of the affected areas, this study presents a simulation-based optimization method for emergency evacuation induced by gas leakage risk. First, the influence radii of different leakage accidents were calculated based on damage criteria and the evacuation radii around the accidents were determined considering the panic psychology. The number of evacuees and their spatial distribution were calculated. Secondly, an evacuation simulation model for affected communities based on the multi-agent system was established to analyze the evacuation process of residents. Finally, the optimal design method and strategies for community evacuation were proposed. Responsibility areas of organized evacuation service for community exits were determined. The results showed that the evacuation times of the two communities A and C were reduced by 10% and 24%, which indicates organized evacuation is more efficient than unorganized evacuation. The selection of community exits is more balanced. Its rationality of the proposed method was verified by the comparison of evacuation simulation.
大直径高压长输天然气管道一旦发生泄漏,就会引起气体扩散或火灾爆炸,对附近的建筑物和居民造成重大影响。安全和迅速疏散可能受影响的人群是当务之急。为了分析受灾害影响的区域,提高受灾地区的疏散效率,本研究提出了一种基于仿真的燃气泄漏风险应急疏散优化方法。首先,基于破坏准则计算不同泄漏事故的影响半径,并考虑恐慌心理确定事故周围的疏散半径;计算疏散人数及其空间分布。其次,建立了基于多智能体系统的受灾社区疏散仿真模型,分析了居民的疏散过程。最后,提出了社区疏散的优化设计方法和策略。确定了社区出口有组织疏散服务的责任区域。结果表明,A和C两个群落的疏散次数分别减少了10%和24%,说明有组织疏散比无组织疏散效率更高。社区出口的选择更加均衡。通过疏散仿真对比,验证了所提方法的合理性。
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引用次数: 0
Structuring forces of intertidal infaunal communities on the northern coast of British Columbia, Canada: assessing the relative importance of top-down, bottom-up, middle-out, and abiotic variables 加拿大不列颠哥伦比亚省北部海岸潮间带动物群落的结构力:评估自上而下、自下而上、中间向外和非生物变量的相对重要性
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0199
T. Gerwing, Lily Campbell, D. Hamilton, M. A. Barbeau, Gregory S. Norris, Sarah E. Dudas, F. Juanes
While trophic and habitat-related abiotic variables (predation, competition, tolerance, etc.) are known to influence community structure in many ecosystems, some systems appear to be only minimally influenced by these variables. Sampling multiple tidal flat communities in northern BC, Canada, we investigated the relative importance of top-down and middle-out (mesopredators) variables, competition for resources (bottom up), and abiotic variables in structuring an infaunal community (invertebrates living in sediment). Similar to previous studies on mudflats in the Bay of Fundy (also at a north temperate latitude), we determined that these variables accounted for a minor (0%–9%) proportion of the observed variation in this infaunal community, suggesting that these variables play a small role in structuring this community. Based on the results of our study and in combination with previous experiments on infaunal recovery patterns post disturbance, we posit that the main factors influencing these infaunal communities likely operate at a scale of sites (kilometres) and(or) plot (metres or less) but not transects (10–100 m within site). Candidate forces structuring these intertidal communities that need future examination include regional species pools and the variables that affect these pools, sediment biogeochemistry, and disturbance/recovery history of a site. The similarity of our Pacific coast findings to those from the north temperate Atlantic coast suggests some similarity in the processes structuring these distinct infaunal communities.
虽然已知营养和与生境有关的非生物变量(捕食、竞争、耐受性等)会影响许多生态系统中的群落结构,但有些系统似乎只受到这些变量的最小影响。在加拿大卑诗省北部的多个潮滩群落中,我们调查了自上而下和中向外(中捕食者)变量、资源竞争(自下而上)和非生物变量在构建动物群落(生活在沉积物中的无脊椎动物)中的相对重要性。与之前对芬迪湾泥滩(同样位于北温带)的研究类似,我们确定这些变量占该动物群落观测到的变化的很小比例(0%-9%),这表明这些变量在该群落的结构中起着很小的作用。基于我们的研究结果,并结合之前关于干扰后动物恢复模式的实验,我们假设影响这些动物群落的主要因素可能在场地(公里)和(或)地块(米或更少)的尺度上起作用,而不是在样地(场地内10-100米)。构建这些潮间带群落的候选力量需要未来的研究,包括区域物种池和影响这些池的变量、沉积物生物地球化学和一个地点的干扰/恢复历史。我们在太平洋海岸的发现与在北温带大西洋海岸的发现的相似性表明,在这些不同的动物群落的结构过程中存在一些相似性。
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引用次数: 0
Incorporating protected areas into global fish biomass projections under climate change 将保护区纳入气候变化下的全球鱼类生物量预测
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0101
J. Palacios‐Abrantes, Sarah M. Roberts, Talya ten Brink, Tim Cashion, W. Cheung, A. Mook, Tu Nguyen
The world has set ambitious goals to protect marine biodiversity and improve ocean health in the face of anthropogenic threats. Yet, the efficiency of spatial tools such as marine reserves to protect biodiversity is threatened as climate change shifts species distributions globally. Here, we investigate the ability of global marine reserves to protect fish biomass under future climate change scenarios. Moreover, we explore regional patterns and compare worlds with and without marine reserves. We rely on computer modeling to simulate an utopian world where all marine reserves thrive and ocean governance is effective. Results suggest that climate change will affect fish biomass in most marine reserves and their surrounding waters throughout the 21st century. The biomass change varies among regions, with tropical reserves losing biomass, temperate ones gaining, and polar reserves having mixed effects. Overall, a world with marine reserves will still be better off in terms of fish biomass than a world without marine reserves. Our study highlights the need to promote climate resilient conservation methods if we are to maintain and recover biodiversity in the ocean under a changing world.
面对人为威胁,世界制定了保护海洋生物多样性和改善海洋健康的宏伟目标。然而,随着气候变化改变全球物种分布,海洋保护区等空间工具保护生物多样性的效率受到威胁。在这里,我们调查了全球海洋保护区在未来气候变化情景下保护鱼类生物量的能力。此外,我们探索区域格局,比较有海洋保护区和没有海洋保护区的世界。我们依靠计算机建模来模拟一个乌托邦世界,在这个世界里,所有的海洋保护区都蓬勃发展,海洋治理也很有效。研究结果表明,在整个21世纪,气候变化将影响大多数海洋保护区及其周围水域的鱼类生物量。不同地区的生物量变化各不相同,热带保护区的生物量减少,温带保护区的增加,极地保护区的影响喜忧参半。总的来说,一个有海洋保护区的世界在鱼类生物量方面仍将比一个没有海洋保护区。我们的研究强调,如果我们要在不断变化的世界下维持和恢复海洋中的生物多样性,就需要推广具有气候适应性的保护方法。
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引用次数: 1
Co-management at a crossroads in Canada: issues, opportunities, and emerging challenges in fisheries and marine contexts 加拿大十字路口的共同管理:渔业和海洋环境中的问题、机遇和新出现的挑战
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0217
T. Swerdfager, D. Armitage
Despite some progress, successful co-management in Canada has remained the exception rather than the rule, and especially so in jurisdictions not covered by a comprehensive land claims agreement. As such, our aim in this perspective is to identify and describe some of the primary factors that may impede more rapid progress toward successful co-management and to explore why they persist, with particular attention to fisheries and marine contexts. Specifically, we outline several institutional conditions that are likely to impede broader adoption of co-management approaches in Canada, including (1) antiquated and incomplete legislative arrangements; (2) a co-management policy vacuum that has not grappled with emerging expectations for co-governance; (3) relative absence of the knowledge co-production systems needed to create the precursors for successful co-management initiatives; and (4) financial and human resource capacity limitations. Such conditions must also be situated in a dynamic context that includes the United Nations Declaration of the Rights of Indigenous Peoples, ongoing reconciliation processes, and shifts in the ownership and use of fisheries and other marine resources. We offer, finally, some suggestions to augment co-management efforts and ultimately achieve its promise.
尽管取得了一些进展,但在加拿大,成功的共同管理仍然是例外,而不是规则,尤其是在未纳入全面土地索赔协议的司法管辖区。因此,我们从这一角度出发的目的是确定和描述可能阻碍更快速地实现成功的共同管理的一些主要因素,并探讨这些因素持续存在的原因,特别关注渔业和海洋环境。具体而言,我们概述了可能阻碍加拿大更广泛采用共同管理方法的几个体制条件,包括(1)过时和不完整的立法安排;(2) 共同管理政策的真空,没有与新出现的共同治理期望作斗争;(3) 相对缺乏为成功的共同管理举措创造先决条件所需的知识共同生产系统;(4)财政和人力资源能力有限。这种条件还必须置于一个动态的背景下,其中包括《联合国土著人民权利宣言》、正在进行的和解进程以及渔业和其他海洋资源所有权和使用权的转变。最后,我们提出了一些建议,以加强共同管理的努力,并最终实现其承诺。
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引用次数: 0
Three years of quality assurance data assessing the performance of over 4000 grant peer review contributions to the Canadian Institutes of Health Research Project Grant Competition 3年的质量保证数据,评估向加拿大卫生研究机构项目资助竞赛提供的4000多份同行评审赠款的绩效
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0175
C. Ardern, Nadia Martino, Sammy Nag, R. Tamblyn, D. Moher, Adrian Mota, Karim M. Khan
The Canadian Institutes of Health Research (CIHR) commenced a Quality Assurance Program in 2019 to monitor the quality of peer review in its Project Grant Competition Peer Review Committees. Our primary aim was to describe the performance of CIHR grant peer reviewers, based on the assessments made by CIHR peer review leaders during the first 3 years of the Research Quality Assurance Program. All Peer Review Committee Chairs and (or) Scientific Officers who led peer review for CIHR in 2019, 2020, and 2021 completed Reviewer Quality Feedback forms immediately following Peer Review Committee meetings. The form assessed Performance, Future potential, Review quality, Participation, and Responsiveness. We summarised and descriptively synthesised data from assessments conducted after each of the four grant competitions. The performance of peer reviewers on 4438 occasions was rated by Chairs and Scientific Officers. Approximately one in three peer reviewers submitted outstanding reviews or discussed additional applications and one in 10 demonstrated potential as a future Peer Review Committee leader. At most, one in 20 peer reviewers was considered to have not performed adequately with respect to review quality, participation, or responsiveness. There is a need for more research on the processes involved in allocating research grant funding.
加拿大卫生研究院(CIHR)于2019年启动了一项质量保证计划,以监测其项目拨款竞争同行评审委员会的同行评审质量。我们的主要目的是根据CIHR同行评审负责人在前3年的评估,描述CIHR赠款同行评审的表现 多年的研究质量保证计划。在2019年、2020年和2021年领导CIHR同行评审的所有同行评审委员会主席和(或)科学官员在同行评审委员会会议后立即填写了评审员质量反馈表。该表格评估了绩效、未来潜力、审查质量、参与度和响应能力。我们总结并描述性地综合了四次拨款竞赛后进行的评估数据。主席和科学干事对同行评审员4438次的表现进行了评级。大约三分之一的同行评审员提交了未完成的评审或讨论了其他申请,十分之一的同行审查员表现出了成为未来同行审查委员会领导人的潜力。最多,每20名同行评审员中就有一人被认为在评审质量、参与度或响应性方面表现不佳。需要对研究拨款的分配过程进行更多的研究。
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引用次数: 1
Models of justice evoked in published scientific studies of plastic pollution 已发表的塑料污染科学研究中引发的正义模型
IF 3.1 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2022-0108
M. Liboiron, Rui Liu, Elise Earles, Imari Walker-Franklin
An exponentially growing body of international research engages with plastic pollution using different ideas on the right ways to frame, research, and intervene in the problem. The premise of this study is that all scientists work with understandings of what is right and wrong and why that is (models of justice) in their research, even when it is not explicitly stated, reflected upon, or a conscious part of the discussion. We surveyed 755 published articles on marine debris and plastic chemical additives and found that all evoked at least one model of justice, and often more. The most routinely used models included: developmental justice, distributive justice, and procedural justice. More rarely, we found appeals to environment-first justice and Indigenous sovereignty. While occasionally these multiple models worked synergistically, more often they conflicted. Our findings ground a call for fellow researchers to use a more intentional and systematic approach to evoking models of justice in our work. Our goal is to offer descriptions and insights about models of justice that are already being deployed to increase the sophistication of the ethical and normative orientations of our research and our fields, both in plastic pollution sciences and beyond.
越来越多的国际研究机构利用不同的想法来构建、研究和干预塑料污染问题。这项研究的前提是,所有科学家在研究中都要理解什么是对的,什么是错的,以及为什么是(正义的模型),即使没有明确说明、反思或有意识地参与讨论。我们调查了755篇发表的关于海洋废弃物和塑料化学添加剂的文章,发现所有这些文章都至少引发了一种正义模式,而且往往更多。最常用的模式包括:发展正义、分配正义和程序正义。更为罕见的是,我们发现了对环境优先正义和土著主权的呼吁。虽然这些多个模型偶尔会协同工作,但更多时候会发生冲突。我们的发现呼吁其他研究人员在我们的工作中使用更有意和系统的方法来唤起正义的模型。我们的目标是提供关于正义模型的描述和见解,这些模型已经被部署,以提高我们在塑料污染科学及其他领域的研究和领域的伦理和规范方向的复杂性。
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引用次数: 1
Including local voices in marine debris conversations to advance environmental justice for island and coastal communities: perspectives from St. Paul Island, Alaska 在海洋垃圾对话中纳入当地声音,以促进岛屿和沿海社区的环境正义:来自阿拉斯加圣保罗岛的观点
3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2023-01-01 DOI: 10.1139/facets-2023-0047
Veronica M. Padula, Anne H. Beaudreau, Douglas Causey, Lauren M. Divine, Marissa Merculieff
Marine debris is ubiquitous across the global ocean and is an increasing threat to human health, economies, habitats, and wildlife. While local to national action plans are important in addressing this issue, they do not necessarily reflect the needs of coastal communities most heavily impacted. Remote island and coastal communities, particularly in Alaska, do not generate the majority of marine debris impacting their ecosystems; however, they are often left with the task of removal and disposal. Thus, the detrimental effects of marine debris are not only an ecological problem but an issue of environmental justice. This project aimed to catalyze the inclusion of place-based knowledge in marine debris solutions for St. Paul Island, a predominantly (>85%) Alaska Native community in the Bering Sea. We interviewed 36 community members during 2017–2020, documenting their observations of marine debris types, amount, distribution, and impacts over recent decades. Participants reported increasing plastic debris since the 1980s, particularly plastic bottles and fishing gear. Nearly 80% expressed concern about impacts to subsistence resources, including entanglement and ingestion. St. Paul Island community members’ experiences highlight that solving marine debris issues requires broader policies and mitigation strategies addressing sources of debris and advancing environmental justice by impact reduction. Furthermore, this case study can serve as an example of how locally relevant action plans can be developed in other coastal communities around the world by including knowledge and concerns of community members, as they are the most heavily and personally impacted by the marine debris on their shorelines.
海洋垃圾在全球海洋中无处不在,对人类健康、经济、栖息地和野生动物的威胁日益严重。虽然地方到国家的行动计划对解决这一问题很重要,但它们不一定反映受影响最严重的沿海社区的需求。偏远的岛屿和沿海社区,特别是阿拉斯加,不会产生影响其生态系统的大部分海洋垃圾;然而,他们经常被留下清除和处理的任务。因此,海洋垃圾的有害影响不仅是一个生态问题,而且是一个环境正义问题。该项目旨在促进将基于地点的知识纳入圣保罗岛的海洋垃圾解决方案,圣保罗岛是白令海阿拉斯加原住民社区的主要(>85%)。我们在2017-2020年期间采访了36名社区成员,记录了他们近几十年来对海洋垃圾类型、数量、分布和影响的观察。与会者报告说,自20世纪80年代以来,塑料碎片越来越多,特别是塑料瓶和渔具。近80%的人表示担心对生存资源的影响,包括缠结和摄入。圣保罗岛社区成员的经验突出表明,解决海洋垃圾问题需要更广泛的政策和缓解战略,解决垃圾来源问题,并通过减少影响促进环境正义。此外,这个案例研究可以作为一个例子,说明如何在世界各地的其他沿海社区制定与当地相关的行动计划,包括社区成员的知识和关切,因为他们是受海岸线上海洋垃圾影响最严重的个人。
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引用次数: 0
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