نتایج جستجو برای: ecosystem

تعداد نتایج: 83322  

Journal: :Trends in ecology & evolution 2006
Stephen R Carpenter Carl Folke

Ecology has a key role in our understanding of the benefits that humans obtain from ecosystems (i.e. ecosystem services). Ecology can also contribute to developing environmentally sound technologies, markets for ecosystem services and approaches to decision-making that account for the changing relationship between humans and ecosystems. These contributions involve basic ecological research on, ...

2004
JUSTIN P. WRIGHT CLIVE G. JONES

Ecosystem engineering—the physical modification of habitats by organisms—can create patches with altered species richness relative to adjacent, unmodified patches. The effect of ecosystem engineering on patch-scale species richness is likely to be difficult to predict from the identity of the engineer, the resources altered as a result of engineering, or the identities of the affected species. ...

2016
Keith J. Fritschie Julian D. Olden

Body size is a fundamental functional trait that can be used to forecast individuals' responses to environmental change and their contribution to ecosystem functioning. However, information on the mean and variation of size distributions often confound one another when relating body size to aggregate functioning. Given that size-based metrics are used as indicators of ecosystem status, it is im...

2015
Ricardo Oliveros-Ramos Philippe Verley Yunne-Jai Shin

Ecosystem approach to fisheries requires a thorough understanding of fishing impacts on ecosystem status and processes as well as predictive tools such as ecosystem models to provide useful information for management. The credibility of such models is essential when used as decision making tools, and model fitting to observed data is one major criterion to assess such credibility. However, more...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2010
Benis N Egoh Belinda Reyers Josie Carwardine Michael Bode Patrick J O'Farrell Kerrie A Wilson Hugh P Possingham Mathieu Rouget Willem de Lange David M Richardson Richard M Cowling

Global declines in biodiversity and the widespread degradation of ecosystem services have led to urgent calls to safeguard both. Responses to this urgency include calls to integrate the needs of ecosystem services and biodiversity into the design of conservation interventions. The benefits of such integration are purported to include improvements in the justification and resources available for...

2013
Ronald L. Sandler RONALD L. SANDLER

This article addresses the implications of rapid and uncertain ecological change, and global climate change in particular, for reserve oriented and restoration oriented ecosystem management. I argue for the following conclusions: (1) rapid and uncertain ecological change undermines traditional justifications for reserve oriented and restoration oriented ecosystem management strategies; (2) it r...

1999
Bob Costanza Bruce Hannon Steve Farber Rudolf DeGroot Monica Grasso Karin Limburg Robert O’Neill Murray Patterson Matthias Ruth Paul Sutton Ferdinando Villa Matthew Wilson

(1) Publish a theoretical manuscript (or group of manuscripts) that articulates our interdisciplinary approach to global ecosystem service valuation (2) Create a database that brings relevant social, economic, and ecological data together in a fully relational format (3) Develop an integrated, dynamic model of ecological and economic systems to more comprehensively evaluate ecosystem services a...

2013

Socioeconomic aspects of the Humboldt Current Large Marine Ecosystem – Extended Summary – Consultancy developed for the TDA-SAP process of the GEF-UNDP project: Towards ecosystem based management of the Humboldt Current Large Marine Ecosystem. Lima, Peru. 21p.

Journal: :Ecology 2012
P H Templer M C Mack F S Chapin L M Christenson J E Compton H D Crook W S Currie C J Curtis D B Dail C M D'Antonio B A Emmett H E Epstein C L Goodale P Gundersen S E Hobbie K Holland D U Hooper B A Hungate S Lamontagne K J Nadelhoffer C W Osenberg S S Perakis P Schleppi J Schimel I K Schmidt M Sommerkorn J Spoelstra A Tietema W W Wessel D R Zak

Effects of anthropogenic nitrogen (N) deposition and the ability of terrestrial ecosystems to store carbon (C) depend in part on the amount of N retained in the system and its partitioning among plant and soil pools. We conducted a meta-analysis of studies at 48 sites across four continents that used enriched 15N isotope tracers in order to synthesize information about total ecosystem N retenti...

Journal: :Entropy 2010
Eugene A. Silow Andrew V. Mokry

Exergy is demonstrated to be a useful measurable parameter reflecting the state of the ecosystem, and allowing estimation of the severity of its anthropogenous damage. Exergy is shown to have advantages such as good theoretical basis in thermodynamics, close relation to information theory, rather high correlation with others ecosystem goal functions and relative ease of computation. Nowadays ex...

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