نتایج جستجو برای: ecosystem

تعداد نتایج: 83322  

2016
Améline Vallet Bruno Locatelli Harold Levrel Christian Brenes Pérez Pablo Imbach Natalia Estrada Carmona Raphaël Manlay Johan Oszwald

The forest transition framework describes the temporal changes of forest areas with economic development. A first phase of forest contraction is followed by a second phase of expansion once a turning point is reached. This framework does not differentiate forest types or ecosystem services, and describes forests regardless of their contribution to human well-being. For several decades, deforest...

Journal: :international journal of environmental research 2014
g.v. lavrentyeva o.a. mirzeabasov b.l. synzynys

a methodology of ecological risk assessment for the terrestrial ecosystem under chronicradioactive pollution of a biotope near a regional radioactive waste storage has been developed in terms of thecritical environmental loads analyzed. it consists of five stages: determination of effect indicators and assessmentof their values; establishment of reference species and indices; assessment and ana...

2010
Anna Pujadas Botey Theresa Garvin Rick Szostak

Global environmental deterioration demands the involvement of the academic community. Ecosystem management is a discipline within ecology that is especially concerned about doing interdisciplinary research in order to solve environmental problems. However, it is not clear what interdisciplinary work means, what its purpose is, and how it is practiced among ecosystem management researchers. The ...

2017
Marion Mehring Uwe Zajonz Diana Hummel

In aiming to halt global biodiversity loss, it is essential to address underlying societal processes. The concept of ecosystem services claims to bridge between biodiversity and society. At the same time there is a considerable research gap regarding how ecosystem services are provided, and how societal activities and dynamics influence the provision of ecosystem services. Interactions and depe...

Ecosystem services are benefits that people obtain from ecosystems. Soil retention is one of the most important ecosystem services. The capacity of ecosystem to maintain soil can be estimated by quantifying this services. In this study, version 3.0.0 of the InVEST software was used to map this ecosystem service in the eastern part of Gorgan-Rud watershed. The InVEST model employs the Universal ...

Journal: :Ambio 2010
Petteri Vihervaara Mia Rönkä Mari Walls

Over the past 50 years, human beings have influenced ecosystems more rapidly than at any similar time in human history, drastically altering ecosystem functioning. Along with ecosystem transformation and degradation, a number of studies have addressed the functioning, assessment and management of ecosystems. The concept of ecosystem services has been developed in the scientific literature since...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2015
Talie Musavi Miguel D. Mahecha Mirco Migliavacca Markus Reichstein Martine Janet van de Weg Peter M. van Bodegom Michael Bahn Christian Wirth Peter B. Reich Franziska Schrodt Jens Kattge

Terrestrial ecosystems strongly determine the exchange of carbon, water and energy between the biosphere and atmosphere. These exchanges are influenced by environmental conditions (e.g., local meteorology, soils), but generally mediated by organisms. Often, mathematical descriptions of these processes are implemented in terrestrial biosphere models. Model implementations of this kind should be ...

2018
Haile Yang Jiakuan Chen

The successful integration of ecosystem ecology with landscape ecology would be conducive to understanding how landscapes function. There have been several attempts at this, with two main approaches: (1) an ecosystem-based approach, such as the meta-ecosystem framework and (2) a landscape-based approach, such as the landscape system framework. These two frameworks are currently disconnected. To...

2006
David M. Post Martin W. Doyle John L. Sabo Jacques C. Finlay

Forging stronger linkages between geomorphology and ecosystem ecology depends, in part, upon developing common conceptualizations of an ecosystem. Because most ecosystem processes are scale dependent, the choice of boundaries is of profound importance to the conceptualization of an ecosystem and to the scope and validity of questions being asked within that ecosystem. Indeed, any conceptualizat...

2017
Lovisa Nilsson Georg K. S. Andersson Klaus Birkhofer Henrik G. Smith

Over and above food, agricultural landscapes provide citizens with crucial public-good ecosystem services, such as biodiversity conservation, cultural values, recreational opportunities, and food security. Because continuing agricultural intensification undermines the ability of landscapes to provide public goods, policies have been implemented to preserve landscape multifunctionality, but with...

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