نتایج جستجو برای: natural ecosystems

تعداد نتایج: 518661  

2013
Konstantinos Manikas Klaus Marius Hansen

The health of a software ecosystem is an indication of how well the ecosystem is functioning. The measurement of health can point to issues that need to be addressed in the ecosystem and areas for the ecosystem to improve. However, the software ecosystem field lacks an applicable way to measure and evaluate health. In this work, we review the literature related to the concept of software ecosys...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Pedro Flombaum Osvaldo E Sala

Current and expected changes in biodiversity have motivated major experiments, which reported a positive relationship between plant species diversity and primary production. As a first step in addressing this relationship, these manipulative experiments controlled as many potential confounding covariables as possible and assembled artificial ecosystems for the purpose of the experiments. As a n...

Journal: :Environmental Health Perspectives 2000
Lindsey A. Greene

An ecosystem is traditionally defined as a community of organisms functioning as an ecological unit in nature. Ecologists often study sites as far away from human influence as possible to get closer to nature. Likewise, when urban educators teach ecology, they often take their students outside the cities to study nature's ecosystems. However, leaving the city limits may no longer be necessary a...

This book consists of 14 chapters covering important aspects in regards to various terrestrial ecosystems, wetlands, river systems, mine site rehabilitation, marsh ecology and heavy metals pollution. Also aims to fill some of the information gaps in ecological restoration, particularly in under-researched ecosystems around the world. Restoration ecology emerged as a separate field in ecology in...

Journal: :Remote Sensing 2015
Jonathan Bennie James P. Duffy Thomas W. Davies Maria Eugenia Correa-Cano Kevin J. Gaston

The rapid growth in electric light usage across the globe has led to increasing presence of artificial light in natural and semi-natural ecosystems at night. This occurs both due to direct illumination and skyglow scattered light in the atmosphere. There is increasing concern about the effects of artificial light on biological processes, biodiversity and the functioning of ecosystems. We combin...

Journal: :Risk analysis : an official publication of the Society for Risk Analysis 2008
Joanna Burger Michael Gochfeld Karen Pletnikoff Ronald Snigaroff Daniel Snigaroff Tim Stamm

It is becoming increasingly clear that scientists, managers, lawyers, public policymakers, and the public must decide how to value what is provided by, and is a consequence of, natural resources. While "Western" scientists have clear definitions for the goods and services that ecosystems provide, we contend that these categories do not encompass the full totality of the values provided by natur...

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