Abstract:
:Public and private companies make significant water infrastructure investments to meet increasing water demand. In this context, investments in wastewater treatment plants (WWTPs), which play an important role in recycling of used water, are also increasing. This study investigates determination of the efficiency scores of WWTPs considering each metropolitan municipality as a decision-making unit (DMU). In this study, a two-step methodology is established to determine efficiency scores of WWTPs. In the first step, the input and output parameters are searched by a literature review for the performance evaluation, and candidate parameters are determined. Then, to determine the most appropriate and related parameters, the importance weights of all candidate inputs and outputs are computed using the extended stepwise weight assessment ratio analysis (SWARA) method. Next, the inputs and outputs are chosen according to their importance weights. In the second step, efficiency scores of WWTPs are calculated using output-oriented data envelopment analysis (DEA) models. Based on the expert opinions, the parameters used as input variables are as follows: Daily Wastewater Amount per Person Discharged in Municipalities, WWTP Capacity, and Number of WWTPs; and the parameters used as output variables are as follows; Amount of Wastewater Treated in WWTPs and Municipal Population Served by WWTPs. The results are presented and discussed by sensitivity analysis. Results show that 14 metropolitan municipalities have total efficiency, 19 metropolitan municipalities have technical efficiency, and 21 metropolitan municipalities have scale efficiency.
journal_name
Environ Managejournal_title
Environmental managementauthors
Ayyildiz E,Yildiz A,Taskin Gumus A,Ozkan Cdoi
10.1007/s00267-020-01381-7subject
Has Abstractpub_date
2020-10-30 00:00:00eissn
0364-152Xissn
1432-1009pii
10.1007/s00267-020-01381-7pub_type
杂志文章abstract::The traditional method of identifying wildlife habitat distribution over large regions consists of pixel-based classification of satellite images into a suite of habitat classes used to select suitable habitat patches. Object-based classification is a new method that can achieve the same objective based on the segment...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-007-9031-0
更新日期:2008-01-01 00:00:00
abstract::Vulnerability assessment is considered an effective tool in establishing monitoring networks required for controlling potential pollution. The aim of this work is to propose a new integrated methodology to assess actual and forecasted groundwater vulnerability by including land-use change impact on groundwater quality...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-011-9652-1
更新日期:2011-05-01 00:00:00
abstract::Monitoring long-term changes in aquatic biodiversity requires the effective use of historical data that were collected with different methods and varying levels of effort. Aggregating data into different spatial scales can control for such differences and provide a robust framework for monitoring distribution trends. ...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-020-01298-1
更新日期:2020-07-01 00:00:00
abstract::This study adopts and modifies the WWF Rapid assessment and prioritization of protected areas management methodology (RAPPAM) to evaluate the management effectiveness of five protected areas in Taiwan. The results indicate that, unlike the situation in most developing countries, the threats and pressures faced by prot...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-012-9875-9
更新日期:2012-08-01 00:00:00
abstract::Until recently, governmental organizations played a dominant and decisive role in natural resource management. However, an increasing number of studies indicate that this dominant role is developing towards a more facilitating role as equal partner to improve efficiency and create a leaner state. This approach is char...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-015-0606-x
更新日期:2016-02-01 00:00:00
abstract::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. Intercul...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-016-0809-9
更新日期:2017-04-01 00:00:00
abstract::In the age of climate change, the demand and lack of pure water challenges many communities. Substantial amount of effort is put in every year to manage and restore degraded lakes while the long-term effects of those efforts are only poorly known or monitored. Oxygenation, or aeration, is used extensively for the rest...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-017-0919-z
更新日期:2017-11-01 00:00:00
abstract::Having volunteers collect data can be a cost-effective strategy to complement or replace those collected by scientists. The quality of these data is essential where field-collected data are used to monitor progress against predetermined standards because they provide decision makers with confidence that choices they m...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-012-9924-4
更新日期:2012-11-01 00:00:00
abstract::Enabling and enacting 'practical action' (i.e., purposeful and concerted collective action) in catchments is a key challenge in responding to a wide range of pressing catchment and natural resource management (NRM) issues. It is particularly a challenge in responding to 'wicked problems,' where generating action is no...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-014-0409-5
更新日期:2015-02-01 00:00:00
abstract::Oil production operations produce waste fluids that may be stored in pits, open tanks, and other sites accessible to wildlife. Birds visit these fluid-filled pits and tanks ("oil pits"), which often resemble water sources, and may become trapped and die. The US Fish and Wildlife Service (USFWS) has a program to reduce...
journal_title:Environmental management
pub_type: 杂志文章,评审
doi:10.1007/s00267-005-0201-7
更新日期:2006-10-01 00:00:00
abstract::"Avança Brasil" (Forward Brazil) is a package of 338 projects throughout Brazil; the portion of the plan to be carried out in Brazil's Legal Amazon region totals US$43 billion over 8 years, US$20 billion of which would be for infrastructure causing environmental damage. Brazil's environmental impact assessment system ...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-002-2788-2
更新日期:2002-12-01 00:00:00
abstract::Recreational beach use with off-road vehicles is popular, but potentially harmful from an environmental perspective. Beaches are important habitats to invertebrates such as ghost crabs of the genus Ocyopde, which excavate extensive and elaborate burrows. Ghost crabs are sensitive to human pressures and changes in burr...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-010-9491-5
更新日期:2010-06-01 00:00:00
abstract::In the last two decades, coral reefs have become popular among recreational divers, especially inside marine protected areas. However, the impact caused by divers on benthic organisms may be contributing to the degradation of coral reefs. We analyzed the behavior of 142 scuba divers in the Abrolhos National Marine Par...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-015-0628-4
更新日期:2016-03-01 00:00:00
abstract::Scleractinian, octocoral, and antipatharian corals have colonized many of the offshore oil and gas platforms in the northern Gulf of Mexico. We surveyed 25 offshore oil and gas platforms for these cnidarians. Few to no corals were detected on inshore, shallow-water structures at <25 m depth; however, the abundance of ...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-017-0862-z
更新日期:2017-08-01 00:00:00
abstract::Since wetland construction projects are becoming more commonplace, meaningful follow-up studies are needed to evaluate how these systems change over time. To that end, the objective of our study was to examine the temporal changes in plant community composition and water chemistry in two constructed wetlands. We inves...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-013-0035-7
更新日期:2013-05-01 00:00:00
abstract::The concept of institutional interplay (i.e., the interaction between institutions) is critical if the challenges to multilevel governance are to be better understood and addressed. Drawing on the literature on institutional interplay, this paper develops an analytical approach to examine challenges to multilevel coas...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-020-01379-1
更新日期:2020-10-25 00:00:00
abstract::Eutrophication is a serious water quality problem in estuaries receiving increasing anthropogenic nutrient loads. Managers undertaking nutrient-reduction strategies aimed at controlling estuarine eutrophication are faced with the challenge that upstream freshwater segments often are phosphorus (P)-limited, whereas mor...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-004-0034-9
更新日期:2006-03-01 00:00:00
abstract::Riparian zones are critical for protecting water quality and wildlife, but are often impacted by human activities. Ongoing threats and uncertainty about the effectiveness of buffer regulations emphasize the importance of monitoring riparian buffers through time. We developed a method to rapidly categorize buffer width...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-011-9790-5
更新日期:2012-03-01 00:00:00
abstract::In this article we present a framework for assessing climate change impacts on water and watershed systems to support management decision-making. The framework addresses three issues complicating assessments of climate change impacts--linkages across spatial scales, linkages across temporal scales, and linkages across...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-008-9205-4
更新日期:2009-01-01 00:00:00
abstract::Cultural landscapes in Austria are multifunctional through their simultaneous support of productive, habitat, regulatory, social, and economic functions. This study investigates, if changing climatic conditions in Austria will lead to landscape change. Based on the assumption that farmers are the crucial decision make...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-016-0720-4
更新日期:2016-09-01 00:00:00
abstract::Water quality from forested landscapes tends to be very high but can deteriorate during and after silvicultural activities. Practices such as forest harvesting, site preparation, road construction/use, and stream crossings have been shown to contribute sediment, nutrients, and other pollutants to adjacent streams. Alt...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-010-9604-1
更新日期:2011-02-01 00:00:00
abstract::Visitor use surveys and water quality data indicates that high visitor use levels of two rivers in Puerto Rico does not appear to adversely affect several water quality parameters. Optimum visitor use to maximize visitor defined satisfaction is a more constraining limit on visitor use than water quality. Our multiple ...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-008-9079-5
更新日期:2008-06-01 00:00:00
abstract::Hydroelectric dams represent major investments and major sources of environmental and social impacts. Powerful forces surround the decision-making process on public investments in the various options for the generation and conservation of electricity. Brazil's proposed Belo Monte Dam (formerly Kararaô) and its upstrea...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-005-0113-6
更新日期:2006-07-01 00:00:00
abstract::Four beaches that share physiographic characteristics (sandy, wide, and long) but differ in socioeconomic and cultural terms (three are located in northwestern Mexico and one in California, USA) were evaluated by beach users. Surveys (565) composed of 36 questions were handed out to beach users on weekends and holiday...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-008-9104-8
更新日期:2008-08-01 00:00:00
abstract::Studies have shown that ecological restoration projects are more likely to gain public support if they simultaneously increase important human services that natural resources provide to people. River restoration projects have the potential to influence many of the societal functions (e.g., flood control, water quality...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-004-0167-x
更新日期:2006-06-01 00:00:00
abstract::In the past few decades, the demand for construction grade sand is increasing in many parts of the world due to rapid economic development and subsequent growth of building activities. This, in many of the occasions, has resulted in indiscriminate mining of sand from in-stream and floodplain areas leading to severe da...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-010-9571-6
更新日期:2011-01-01 00:00:00
abstract::Methods for defining and retrieving reference conditions for large rivers were explored with emphasis on hydromorphologic and biologic quality indicators. For a set of four large rivers in the European Western Plains ecoregion, i.e., the rivers Meuse, Loire, Allier, and Dordogne, reference reaches were selected based ...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-008-9083-9
更新日期:2008-05-01 00:00:00
abstract::Environmental indicators are often aggregated into a single index for various purposes in environmental studies. Aggregated indices derived from the same data set can differ, usually because the aggregated indices' sensitivities are not thoroughly analyzed. Furthermore, if a sensitivity analysis is carried out, it is ...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-005-0082-9
更新日期:2007-04-01 00:00:00
abstract::The amount of ecological restoration required to mitigate or compensate for environmental injury or habitat loss is often based on the goal of achieving ecological equivalence. However, few tools are available for estimating the extent of restoration required to achieve habitat services equivalent to those that were l...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-001-0019-x
更新日期:2002-02-01 00:00:00
abstract::Urban ecosystems are increasingly influenced by residential yard care decisions. This had led researchers to focus on homeowner education programs when it comes to yard care. Typically, the success of programs designed to influence yard care is based on whether the target subject changes his or her behavior in a more ...
journal_title:Environmental management
pub_type: 杂志文章
doi:10.1007/s00267-014-0368-x
更新日期:2014-11-01 00:00:00