نتایج جستجو برای: ecosystem indicators
تعداد نتایج: 189260 فیلتر نتایج به سال:
BACKGROUND Research on ecosystem services has grown exponentially during the last decade. Most of the studies have focused on assessing and mapping terrestrial ecosystem services highlighting a knowledge gap on marine and coastal ecosystem services (MCES) and an urgent need to assess them. METHODOLOGY/PRINCIPAL FINDINGS We reviewed and summarized existing scientific literature related to MCES...
The UN System of Environmental-Economic Accounting Ecosystem (SEEA EA) aims at regular and standardised stocktaking the extent ecosystems, their condition, services they provide to society. Recording condition ecosystems is one most complex pieces in this exercise needs be supported by consistent guidelines. SEEA EA defines an ecosystem as its overall quality, measured terms quantitative metric...
Industrial symbiosis (IS) is a collaborative approach among firms involving physical exchanges of materials, energy, and wastes, which creates economic advantages for environmental benefits the society. In this paper, we adopt an ecosystem to conceptualize network involved in IS relationships (ISN), terms organisms (firms), functions (waste exchange), services (environmental benefits), provide ...
A strategy for management of giant sequoia groves is formulated using a conceptual framework for ecosystem management recently developed by Region Five of the USDA Forest Service. The framework includes physical, biological, and social dimensions. Environmental indicators and reference variability for key ecosystem elements are discussed in this paper. The selected ecosystem elements include: 1...
Environmental sensor networks are developing rapidly to assess changes in ecosystems and their services. Some ecosystem changes involve thresholds, and theory suggests that statistical indicators of changing resilience can be detected near thresholds. We examined the capacity of environmental sensors to assess resilience during an experimentally induced transition in a whole-lake manipulation. ...
Article history: Received 31 May 2006 Received in revised form 19 April 2007 Accepted 22 May 2007 Available online 13 July 2007 Agriculture produces more than just crops. Agricultural practices have environmental impacts that affect a wide range of ecosystem services, including water quality, pollination, nutrient cycling, soil retention, carbon sequestration, and biodiversity conservation. In ...
The EU Marine Strategy Framework Directive 2008/56/EC (MSFD) defines a framework for Community actions in the field of marine environmental policy in order to achieve and/or maintain the Good Environmental Status (GES) of the European seas by 2020. Microbial assemblages (from viruses to microbial-sized metazoa) provide a major contribution to global biodiversity and play a crucial role in the f...
Spring in Paris (31 March to 3 April 2004) helped to attract more than 250 participants from 53 countries to a symposium on ‘‘Quantitative Ecosystem Indicators for Fisheries Management’’. The symposium was hosted by the Intergovernmental Oceanographic Commission at the UNESCO headquarters next to the Eiffel Tower, and coorganized with the Scientific Committee on Oceanic Research (SCOR). Four ye...
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