نتایج جستجو برای: natural ecosystems

تعداد نتایج: 518661  

2012
Liming Lai Xuechun Zhao Lianhe Jiang Yongji Wang Liangguo Luo Yuanrun Zheng Xi Chen Glyn M. Rimmington

The variation of different ecosystems on the terrestrial carbon balance is predicted to be large. We investigated a typical arid region with widespread saline/alkaline soils, and evaluated soil respiration of different agricultural and natural ecosystems. Soil respiration for five ecosystems together with soil temperature, soil moisture, soil pH, soil electric conductivity and soil organic carb...

2010
Jeremy T. Lundholm Paul J. Richardson

1. Current views of anthropogenic environments emphasize the extreme novelty of urban and industrial ecosystems. Proponents of reconciliation ecology argue that we need to use such habitats to conserve biodiversity, given the inadequacy of natural reserve systems. 2. Some of the harshest anthropogenic ecosystems may be able to support indigenous biodiversity due to their structural or functiona...

2007
Gerard Briscoe Suzanne Sadedin

A primary motivation for research in Digital Ecosystems is the desire to exploit the self-organising properties of natural ecosystems. Ecosystems are thought to be robust, scalable architectures that can automatically solve complex, dynamic problems. However, the biological processes that contribute to these properties have not been made explicit in Digital Ecosystem research. Here, we introduc...

Journal: :Ambio 2002
Peter M Vitousek Stephan Hättenschwiler Lydia Olander Steven Allison

Anthropogenic changes to the global N cycle are important in part because added N alters the composition, productivity, and other properties of many natural ecosystems substantially. Why does added N have such a large impact? Why is N in short supply in so many natural ecosystems? Processes that slow the cycling of N relative to other elements and processes that control ecosystem-level inputs a...

Journal: :Revista de biologia tropical 2010
Alberto Rodríguez-Ramírez Jaime Garzón-Ferreira Angélica Batista-Morales Diego L Gil Diana Isabel Gómez-López Kelly Gómez-Campo Tomás López-Londoño Raúl Navas-Camacho María Catalina Reyes-Nivia Johanna Vega-Sequeda

Few monitoring programs have simultaneously assessed the dynamics of linked marine ecosystems (coral reefs, seagrass beds and mangroves) to document their temporal and spatial variability. Based on CARICOMP protocol we evaluated permanent stations in coral reefs, seagrass beds and mangroves from 1993 to 2008 in Chengue Bay at the Tayrona Natural Park, Colombian Caribbean. Overall, the studied e...

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