نتایج جستجو برای: community change
تعداد نتایج: 928418 فیلتر نتایج به سال:
ABSTACT: Methylotrophy is the ability of microorganisms to utilize single carbon compounds such as methanol (CH3OH), the second most abundant organic compound in the atmosphere. Methylotrophs have been recognized as the main drivers of methane fluxes, but their role with methanol fluxes have been overlooked. Understanding methanol degraders such as methylotrophs can help better our understandin...
Understanding how consumers respond to electricity prices is essential for predicting the effects of climate change policy and other policies that target electricity markets. To date, studies of long-run electricity demand have relied on price changes that are transient or endogenous, and none have utilized experimental or quasi-experimental variation. We study the dynamics of residential elect...
Antarctica and its surrounding islands lie at one extreme of global variation in diversity. Typically, these regions are characterized as being species poor and having simple food webs. Here, we show that terrestrial systems in the region are nonetheless characterized by substantial spatial and temporal variations at virtually all of the levels of the genealogical and ecological hierarchies whi...
hould community paediatrics continue as a separate specialty, as it has been since the publication of the Court Report, 1 or should it merge with general paediatrics, or with primary care? The Royal College of Paediatrics and Child Health has taken a lead role in the debate on the future configuration of child health services and training and on the future shape of community child health. Two d...
Species-range expansions are a predicted and realized consequence of global climate change. Climate warming and the poleward widening of the tropical belt have induced range shifts in a variety of marine and terrestrial species. Range expansions may have broad implications on native biota and ecosystem functioning as shifting species may perturb recipient communities. Larger symbiont-bearing fo...
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: Introduction Biological invasions in the 21st century: Ecological impacts, predictions, and management across land and sea I...
A Marine Climate Impacts Workshop was held from 29 April to 3 May 2012 at the US National Center of Ecological Analysis and Synthesis in Santa Barbara. This workshop was the culmination of a series of six meetings over the past three years, which had brought together 25 experts in climate change ecology, analysis of large datasets, palaeontology, marine ecology and physical oceanography. Aims o...
Wetlands cover approximately 6% of the Earth's surface. They are frequently found at the interface between terrestrial and aquatic ecosystems and are strongly dependent on the water cycle. For this reason, wetlands are extremely vulnerable to the effects of climate change. Mangroves and floodplain ecosystems are some of the most important environments for the Amazonian population, as a source o...
The assembly of regional biotas and organismal responses to anthropogenic climate change both depend on the capacity of organisms to adapt to novel ecological conditions. Here we demonstrate the concept of evolutionary lag time, the time between when a climatic regime or habitat develops in a region and when it is colonized by a given clade. We analyzed the time of colonization of four clades (...
Time series of environmental measurements are essential for detecting, measuring and understanding changes in the Earth system and its biological communities. Observational series have accumulated over the past 2-5 decades from measurements across the world's estuaries, bays, lagoons, inland seas and shelf waters influenced by runoff. We synthesize information contained in these time series to ...
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