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Environmental Management

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https://www.readbyqxmd.com/read/28091741/chemical-physical-and-biological-factors-shape-littoral-invertebrate-community-structure-in-coal-mining-end-pit-lakes
#1
Andreas Luek, Joseph B Rasmussen
Aquatic invertebrates form the base of the consumer food web in lakes. In coal-mining end-pit lakes, invertebrates are exposed to an environment with potentially challenging physical and chemical features. We hypothesized that the physical and chemical features of end-pit lakes reduce critical littoral habitat and thus reduce invertebrate diversity, thereby limiting the potential for these lakes to be naturalized. We used a multivariate approach using principle component analysis and redundancy analysis to study relationships between invertebrate community structure, habitat features, and water quality in five end-pit lakes and five natural lakes in the Rocky Mountain foothills of west-central Alberta, Canada...
January 13, 2017: Environmental Management
https://www.readbyqxmd.com/read/28091740/controlling-eutrophication-in-a-mediterranean-shallow-reservoir-by-phosphorus-loading-reduction-the-need-for-an-integrated-management-approach
#2
Mikel Zaragüeta, Pablo Acebes
Increased nutrient enrichment in Mediterranean standing waters has enhanced the risk of being affected by cyanobacterial blooms. Because phosphorus abatement is shaped as a crucial strategy for controlling eutrophication, this study introduces a structural thinking, experiential learning laboratory with animation dynamic model elaborated for Cazalegas Reservoir (Spain) to assess the feasibility of implementing a set of internal and external control measures and hydromorphological adjustments to meet the goal of oligotrophication...
January 13, 2017: Environmental Management
https://www.readbyqxmd.com/read/28078392/carbon-footprint-assessment-of-western-australian-groundwater-recycling-scheme
#3
Andrew Simms, Stacey Hamilton, Wahidul K Biswas
This research has determined the carbon footprint or the carbon dioxide equivalent (CO2 eq) of potable water production from a groundwater recycling scheme, consisting of the Beenyup wastewater treatment plant, the Beenyup groundwater replenishment trial plant and the Wanneroo groundwater treatment plant in Western Australia, using a life cycle assessment approach. It was found that the scheme produces 1300 tonnes of CO2 eq per gigalitre (GL) of water produced, which is 933 tonnes of CO2 eq higher than the desalination plant at Binningup in Western Australia powered by 100% renewable energy generated electricity...
January 11, 2017: Environmental Management
https://www.readbyqxmd.com/read/28078391/soil-organic-carbon-fractions-and-stocks-respond-to-restoration-measures-in-degraded-lands-by-water-erosion
#4
Xiaodong Nie, Zhongwu Li, Jinquan Huang, Bin Huang, Haibing Xiao, Guangming Zeng
Assessing the degree to which degraded soils can be recovered is essential for evaluating the effects of adopted restoration measures. The objective of this study was to determine the restoration of soil organic carbon under the impact of terracing and reforestation. A small watershed with four typical restored plots (terracing and reforestation (four different local plants)) and two reference plots (slope land with natural forest (carbon-depleted) and abandoned depositional land (carbon-enriched)) in subtropical China was studied...
January 11, 2017: Environmental Management
https://www.readbyqxmd.com/read/28078390/group-development-and-integration-in-a-cross-disciplinary-and-intercultural-research-team
#5
Naomi Kirk-Lawlor, Shorna Allred
Cross-disciplinary research is necessary to solve many complex problems that affect society today, including problems involving linked social and environmental systems. Examples include natural resource management or scarcity problems, problematic effects of climate change, and environmental pollution issues. Intercultural research teams are needed to address many complex environmental matters as they often cross geographic and political boundaries, and involve people of different countries and cultures. It follows that disciplinarily and culturally diverse research teams have been organized to investigate and address environmental issues...
January 11, 2017: Environmental Management
https://www.readbyqxmd.com/read/28078389/responses-of-a-federally-endangered-songbird-to-understory-thinning-in-oak-juniper-woodlands
#6
Ashley M Long, Mike E Marshall, Michael L Morrison, K Brian Hays, Shannon L Farrell
Wildlife conservation and management on military lands must be accomplished in the context of military readiness, which often includes ground-based training that is perceived to conflict with wildlife needs and environmental regulations. From 2008‒2012, we examined territory density, pairing success, and fledging success of the federally endangered golden-cheeked warbler (Setophaga chrysoparia; hereafter warbler) in relation to removal of small-diameter trees from the understory of mature oak-juniper (Quercus-Juniperus) woodland at the 87,890 ha Fort Hood Military Reservation in central Texas...
January 11, 2017: Environmental Management
https://www.readbyqxmd.com/read/28078388/high-stocking-density-controls-phillyrea-angustifolia-in-mediterranean-grasslands
#7
François Mesléard, Nicole Yavercovski, Gaétan Lefebvre, Loic Willm, Anne Bonis
Extensive grazing applied in the form of low instantaneous pressure over a long period is a widespread management practice in protected areas. However this kind of stocking method does not always achieve the expected results, in particular because it fails to limit colonization by woody plants.This is the case in the relict xero-halophytic grasslands of the northern Mediterranean coastal region, subjected to widespread colonization by the shrub Phillyrea angustifolia despite the presence of extensive grazing...
January 11, 2017: Environmental Management
https://www.readbyqxmd.com/read/28078387/landowners-perspectives-on-coordinated-landscape-level-invasive-species-control-the-role-of-social-and-ecological-context
#8
Rebecca M Niemiec, Roger P Pech, Grant L Norbury, Andrea E Byrom
To achieve biodiversity gains, landowner engagement in coordinated invasive species control programs across private lands is needed. Understanding landowners' perspectives toward such coordinated control efforts is crucial to facilitating engagement. We conducted in person and mail surveys of 68 landowners in and adjacent to the area of a proposed invasive predator control program in New Zealand. We find that, similar to previous studies, landowners consider the potential socioeconomic and ecological benefits of invasive species control and express a strong desire to enhance native biodiversity...
January 11, 2017: Environmental Management
https://www.readbyqxmd.com/read/28074256/erratum-to-visions-of-restoration-in-fire-adapted-forest-landscapes-lessons-from-the-collaborative-forest-landscape-restoration-program
#9
Lauren S Urgenson, Clare M Ryan, Charles B Halpern, Jonathan D Bakker, R Travis Belote, Jerry F Franklin, Ryan D Haugo, Cara R Nelson, Amy E M Waltz
No abstract text is available yet for this article.
January 10, 2017: Environmental Management
https://www.readbyqxmd.com/read/28044183/managing-for-no-net-loss-of-ecological-services-an-approach-for-quantifying-loss-of-coastal-wetlands-due-to-sea-level-rise
#10
Jennifer Kassakian, Ann Jones, Jeremy Martinich, Daniel Hudgens
Sea level rise has the potential to substantially alter the extent and nature of coastal wetlands and the critical ecological services they provide. In making choices about how to respond to rising sea level, planners are challenged with weighing easily quantified risks (e.g., loss of property value due to inundation) against those that are more difficult to quantify (e.g., loss of primary production or carbon sequestration services provided by wetlands due to inundation). Our goal was to develop a cost-effective, appropriately-scaled, model-based approach that allows planners to predict, under various sea level rise and response scenarios, the economic cost of wetland loss-with the estimates proxied by the costs of future restoration required to maintain the existing level of wetland habitat services...
January 2, 2017: Environmental Management
https://www.readbyqxmd.com/read/28044182/mowing-submerged-macrophytes-in-shallow-lakes-with-alternative-stable-states-battling-the-good-guys
#11
Jan J Kuiper, Michiel J J M Verhofstad, Evelien L M Louwers, Elisabeth S Bakker, Robert J Brederveld, Luuk P A van Gerven, Annette B G Janssen, Jeroen J M de Klein, Wolf M Mooij
Submerged macrophytes play an important role in maintaining good water quality in shallow lakes. Yet extensive stands easily interfere with various services provided by these lakes, and harvesting is increasingly applied as a management measure. Because shallow lakes may possess alternative stable states over a wide range of environmental conditions, designing a successful mowing strategy is challenging, given the important role of macrophytes in stabilizing the clear water state. In this study, the integrated ecosystem model PCLake is used to explore the consequences of mowing, in terms of reducing nuisance and ecosystem stability, for a wide range of external nutrient loadings, mowing intensities and timings...
January 2, 2017: Environmental Management
https://www.readbyqxmd.com/read/28040829/application-of-life-cycle-assessment-on-electronic-waste-management-a-review
#12
Mianqiang Xue, Zhenming Xu
Electronic waste is a rich source of both valuable materials and toxic substances. Management of electronic waste is one of the biggest challenges of current worldwide concern. As an effective and prevailing environmental management tool, life cycle assessment can evaluate the environmental performance of electronic waste management activities. Quite a few scientific literatures reporting life cycle assessment of electronic waste management with significant outcomes have been recently published. This paper reviewed the trends, characteristics, research gaps, and challenges of these studies providing detailed information for practitioners involved in electronic waste management...
December 31, 2016: Environmental Management
https://www.readbyqxmd.com/read/28040828/whose-knowledge-whose-development-use-and-role-of-local-and-external-knowledge-in-agroforestry-projects-in-bolivia
#13
Johanna Jacobi, Sarah-Lan Mathez-Stiefel, Helen Gambon, Stephan Rist, Miguel Altieri
Agroforestry often relies on local knowledge, which is gaining recognition in development projects. However, how local knowledge can articulate with external and scientific knowledge is little known. Our study explored the use and integration of local and external knowledge in agroforestry projects in Bolivia. In 42 field visits and 62 interviews with agroforestry farmers, civil society representatives, and policymakers, we found a diverse knowledge base. We examined how local and external knowledge contribute to livelihood assets and tree and crop diversity...
December 31, 2016: Environmental Management
https://www.readbyqxmd.com/read/28004141/social-perception-of-public-water-supply-network-and-groundwater-quality-in-an-urban-setting-facing-saltwater-intrusion-and-water-shortages
#14
Ibrahim Alameddine, Gheeda Jawhari, Mutasem El-Fadel
Perceptions developed by consumers regarding the quality of water reaching their household can affect the ultimate use of the water. This study identified key factors influencing consumers' perception of water quality in a highly urbanized coastal city, experiencing chronic water shortages, overexploitation of groundwater, and accelerated saltwater intrusion. Household surveys were administered to residents to capture views and perceptions of consumed water. Concomitantly, groundwater and tap water samples were collected and analyzed at each residence for comparison with perceptions...
December 22, 2016: Environmental Management
https://www.readbyqxmd.com/read/28004140/understanding-land-system-change-through-scenario-based-simulations-a-case-study-from-the-drylands-in-northern-china
#15
Zhifeng Liu, Peter H Verburg, Jianguo Wu, Chunyang He
The drylands in northern China are expected to face dramatic land system change in the context of socioeconomic development and environmental conservation. Recent studies have addressed changes of land cover with socioeconomic development in the drylands in northern China. However, the changes in land use intensity and the potential role of environmental conservation measures have yet to be adequately examined. Given the importance of land management intensity to the ecological conditions and regional sustainability, our study projected land system change in Hohhot city in the drylands in northern China from 2013 to 2030...
December 22, 2016: Environmental Management
https://www.readbyqxmd.com/read/27981355/probabilistic-evaluation-of-ecological-and-economic-objectives-of-river-basin-management-reveals-a-potential-flaw-in-the-goal-setting-of-the-eu-water-framework-directive
#16
Turo Hjerppe, Antti Taskinen, Niina Kotamäki, Olli Malve, Juhani Kettunen
The biological status of European lakes has not improved as expected despite up-to-date legislation and ecological standards. As a result, the realism of objectives and the attainment of related ecological standards are under doubt. This paper gets to the bottom of a river basin management plan of a eutrophic lake in Finland and presents the ecological and economic impacts of environmental and societal drivers and planned management measures. For these purposes, we performed a Monte Carlo simulation of a diffuse nutrient load, lake water quality and cost-benefit models...
December 16, 2016: Environmental Management
https://www.readbyqxmd.com/read/27981354/an-assessment-of-long-term-compliance-with-performance-standards-in-compensatory-mitigation-wetlands
#17
Kyle Van den Bosch, Jeffrey W Matthews
Under the US Clean Water Act, wetland restoration is used to compensate for adverse impacts to wetlands. Following construction, compensation wetlands are monitored for approximately 5 years to determine if they comply with project-specific performance standards. Once a compensation site complies with performance standards, it is assumed that the site will continue to meet standards indefinitely. However, there have been few assessments of long-term compliance. We surveyed, in 2012, 30 compensation sites 8-20 years after restoration to determine whether projects continued to meet performance standards...
December 16, 2016: Environmental Management
https://www.readbyqxmd.com/read/27928585/characterizing-the-effects-of-stormwater-mitigation-on-nutrient-export-and-stream-concentrations
#18
Colin D Bell, Sara K McMillan, Sandra M Clinton, Anne J Jefferson
Urbanization increases nutrient loading and lowers residence times for processing of reactive solutes, including nitrate, total dissolved nitrogen, orthophosphate, and dissolved organic carbon), which leads to increased stream concentrations and mass export. Stormwater control measures mitigate the impacts of urbanization, and have the potential to improve stream water quality, however the net effect instream is not well understood. We monitored two urban and two suburban watersheds in Charlotte, NC to determine if mitigation controlled the fraction of total mass export during storm, if development classification as either urban or suburban (defined by the age, density and distribution of urban development) controlled storm nutrient and carbon dynamics, and if stormwater control measures were able to change stream water chemistry...
December 8, 2016: Environmental Management
https://www.readbyqxmd.com/read/27904947/a-methodology-to-evaluate-ecological-resources-and-risk-using-two-case-studies-at-the-department-of-energy-s-hanford-site
#19
Joanna Burger, Michael Gochfeld, Amoret Bunn, Janelle Downs, Christian Jeitner, Taryn Pittfield, Jennifer Salisbury, David Kosson
An assessment of the potential risks to ecological resources from remediation activities or other perturbations should involve a quantitative evaluation of resources on the remediation site and in the surrounding environment. We developed a risk methodology to rapidly evaluate potential impact on ecological resources for the U.S. Department of Energy's Hanford Site in southcentral Washington State. We describe the application of the risk evaluation for two case studies to illustrate its applicability. The ecological assessment involves examining previous sources of information for the site, defining different resource levels from 0 to 5...
November 30, 2016: Environmental Management
https://www.readbyqxmd.com/read/27885388/recovery-of-forest-and-phylogenetic-structure-in-abandoned-cocoa-agroforestry-in-the-atlantic-forest-of-brazil
#20
Samir Gonçalves Rolim, Regina Helena Rosa Sambuichi, Götz Schroth, Marcelo Trindade Nascimento, José Manoel Lucio Gomes
Cocoa agroforests like the cabrucas of Brazil's Atlantic forest are among the agro-ecosystems with greatest potential for biodiversity conservation. Despite a global trend for their intensification, cocoa agroforests are also being abandoned for socioeconomic reasons especially on marginal sites, because they are incorporated in public or private protected areas, or are part of mandatory set-asides under Brazilian environmental legislation. However, little is known about phylogenetic structure, the processes of forest regeneration after abandonment and the conservation value of former cabruca sites...
November 25, 2016: Environmental Management
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