Results 201 to 210 of about 700,041 (234)
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Plant diversity and ecosystem services in Amazonian homegardens of Ecuador
Agriculture, Ecosystems and Environment, 2016Homegardens (HG) can play a key role in the conservation of plant diversity and at the same time provide ecosystem services that have a direct and positive impact on human welfare. The relationships among plant diversity, ecosystem services, and the factors that influence them formed the subject of study in tropical HG in Sangay, Ecuador.
Josu G. Alday +2 more
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Testing for criticality in ecosystem dynamics: the case of Amazonian rainforest and savanna fire
Ecology Letters, 2010Ecology Letters(2010) 13: 793–802AbstractWe test for two critical phenomena in Amazonian ecosystems: self‐organized criticality (SOC) and critical transitions. SOC is often presented in the complex systems literature as a general explanation for scale invariance in nature.
Reinaldo Imbrozio Barbosa +2 more
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Andean geodynamics and the evolution of the Amazonian ecosystem
2022<p>The evolution of the Amazonian landscape is directly related to the development of the Andean Cordillera and its interaction with climate and other geodynamic processes. The Andean orogeny shaped the climate in South America and changed the precipitation rates across the continent.
Victor Sacek +4 more
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Large‐scale degradation of Amazonian freshwater ecosystems
Global Change Biology, 2015AbstractHydrological connectivity regulates the structure and function of Amazonian freshwater ecosystems and the provisioning of services that sustain local populations. This connectivity is increasingly being disrupted by the construction of dams, mining, land‐cover changes, and global climate change. This review analyzes these drivers of degradation,
Leandro, Castello, Marcia N, Macedo
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Chapter 4: Amazonian ecosystems and their ecological functions
2021This chapter describes the diversity of plants and ecosystems in the lowland Amazon and discusses how complex regional gradients in climate and soil conditions drive regional variability in species composition, vegetation dynamics, carbon stocks, and productivity.
Mónica Moraes R. +12 more
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Soil biodiversity in amazonian and other Brazilian ecosystems
2006This book reviews soil biodiversity and related ecological processes in one of the key biodiversity hotspots of the world, the Amazon, and nearby regions of Brazil. It covers both the tropical savannah and rainforests. Chapters describe the biology, ecology, taxonomy, geographic distribution and sampling methods for the most important soil functional ...
Moreira, F.M.S. +2 more
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Primary production in the Amazonian aquatic ecosystem
1984The incomparable beauty of the energy/biomass exchange has its finest expression in the lakes of the Central Amazon. Blackwater, whitewater and clearwater rivers and streams flood the myriad ria and varzea lakes each year. The floods are a grand inflowing of energy. As the floods subside, the lakes respond with bursts of production which are swept into
H. Rai, G. Hill
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Human Adaptive Strategies in Amazonian Blackwater Ecosystems
American Anthropologist, 1991Blackwater ecosystems of Amazonia represent extreme nutrient‐poor conditions that differ from those found in other regions of the Amazon. The tendency to contrast mainly the floodplain (várzea) and the upland forests (terra firme) has made it possible to overlook significant differences present within the Amazonian terra firme. These differences can be
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Climatic and biotic controls on annual carbon storage in Amazonian ecosystems
Global Ecology and Biogeography, 2000Abstract The role of undisturbed tropical land ecosystems in the global carbon budget is not well understood. It has been suggested that interannual climate variability can affect the capacity of these ecosystems to store carbon in the short term. In this paper, we use a transient version of the Terrestrial Ecosystem Model (TEM) to estimate annual ...
H. Tian +6 more
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Nutrient limitation of bacterial production in clear water Amazonian ecosystems
Hydrobiologia, 2002The aim of this research was to determine the main limiting nutrient (carbon, nitrogen or phosphorus) to bacterial production in different clear water Amazonian ecosystems during the high water period, when there is influence of the flooded land, mainly as sources of organic matter.
Vinicius F. Farjalla +3 more
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