نتایج جستجو برای: natural ecosystems
تعداد نتایج: 518661 فیلتر نتایج به سال:
Sustainable use of the planet requires dependable delivery of ecosystem services at a level necessary to meet the needs of humankind. During the last two centuries, particularly in the twentieth century, ecosystems have been fragmented and stressed in a variety of ways, including biotic impoverishment. Self-regulating ecosystems are capable of maintaining nominative structure and function, incl...
1 Council for Scientific and Industrial Research, Natural Resources and the Environment, Ecosystems, Forestry and Forest Products Research Centre, PO Box 17001, Congella 4013, South Africa 2 Council for Scientific and Industrial Research, Natural Resources and the Environment, Ecosystems, Earth Observation, PO Box 395, Pretoria 0001, South Africa 3 School of Environmental Sciences, University o...
Citation: Guignard MS, Leitch AR, Acquisti C, Eizaguirre C, Elser JJ, Hessen DO, Jeyasingh PD, Neiman M, Richardson AE, Soltis PS, Soltis DE, Stevens CJ, Trimmer M, Weider LJ, Woodward G and Leitch IJ (2017) Impacts of Nitrogen and Phosphorus: From Genomes to Natural Ecosystems and Agriculture. Front. Ecol. Evol. 5:70. doi: 10.3389/fevo.2017.00070 Impacts of Nitrogen and Phosphorus: From Genome...
Phytoplankton species richness scales consistently from laboratory microcosms to the world's oceans.
Species-area relationships have been observed for virtually all major groups of macroorganisms that have been studied to date but have not been explored for microscopic phytoplankton algae, which are the dominant producers in many freshwater and marine ecosystems. Our analyses of data from 142 different natural ponds, lakes, and oceans and 239 experimental ecosystems reveal a strong species-are...
What would it be like to walk into a real-life “Holodeck” or “Cerebro” and experience a stunning new world unlike anything seen before? Beyond this, what if we were able to experience hitherto unobservable aspects of nature, as environments into which the body cannot actually venture? In fact, these questions are on the minds of scientists and artists working together, right now, in the AlloSph...
Understanding ecological complexity has stymied scientists for decades. Recent elucidation of the famously coined "devious strategies for stability in enduring natural systems" has opened up a new field of computational analyses of complex ecological networks where the nonlinear dynamics of many interacting species can be more realistically mod eled and understood. Here, we describe the first e...
beech forests in midland areas of hyrcanian forests of iran are the most important forests having the highest degree of naturalness. these forests are the valuable source of wood production and other forest products. one of the most important characteristics of plant communities is the spatial pattern of trees. ecological process in forest ecosystems are directly influenced by the spatial patte...
Brazilian biodiversity is recognized as one of the most expressive in the terrestrial biosphere and plays an important role to human well-being and health, providing basic products and ecosystem services. The products or goods from natural ecosystems include pharmaceutical material, food such as fishery, timber, and many others. Natural ecosystems also provide essential life-supporting services...
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