Results 11 to 20 of about 1,178,025 (303)

Mycorrhiza in Tropical and Neotropical Ecosystems

open access: yes, 2018
Mycorrhizal symbiosis is a mutualistic association of plant roots and fungi that plays a major role in ecosystem function and diversification, as well as its stability and productivity. It also plays a key role in the biology and ecology of forest trees, affecting growth, water and nutrient absorption and protection against soil-borne pathogens ...
Hijri, Mohamed, Bâ, Amadou
openaire   +4 more sources

Ecotoxicology of tropical marine ecosystems [PDF]

open access: yesEnvironmental Toxicology and Chemistry, 1997
Abstract The negative effects of chemical contaminants on tropical marine ecosystems are of increasing concern as human populations expand adjacent to these communities. Watershed streams and ground water carry a variety of chemicals from agricultural, industrial, and domestic activities, while winds and currents transport pollutants ...
Esther C. Peters   +4 more
openaire   +1 more source

Implications of differences between temperate and tropical freshwater ecosystems for the ecological risk assessment of pesticides [PDF]

open access: yes, 2010
Despite considerable increased pesticide use over the past decades, little research has been done into their fate and effects in surface waters in tropical regions.
Brink, P.J., van den, Daam, M.A.
core   +1 more source

Carbon Exchange Among Tropical Coastal Ecosystems [PDF]

open access: yes, 2009
Tropical rivers provide about 60% of the global transport of organic and inorganic carbon from continents to the coastal zone. These inputs combine with organic material from productive mangrove forests, seagrass beds, and coral reefs to make tropical ...
Steven Bouillon   +5 more
core   +1 more source

Spatial variability in soil organic carbon in a tropical montane landscape: associations between soil organic carbon and land use, soil properties, vegetation, and topography vary across plot to landscape scales [PDF]

open access: yesSOIL, 2017
Presently, the lack of data on soil organic carbon (SOC) stocks in relation to land-use types and biophysical characteristics prevents reliable estimates of ecosystem carbon stocks in montane landscapes of mainland SE Asia.
M. de Blécourt   +6 more
doaj   +1 more source

Forest fragmentation and selective logging have inconsistent effects on multiple animal-mediated ecosystem processes in a tropical forest [PDF]

open access: yes, 2011
Forest fragmentation and selective logging are two main drivers of global environmental change and modify biodiversity and environmental conditions in many tropical forests.
Mathias Templin   +75 more
core   +2 more sources

Fish extinctions and ecosystem functioning in tropical ecosystems [PDF]

open access: yesProceedings of the National Academy of Sciences, 2007
The activities of modern humans have increased the extinction rate of the world's species by up to 1,000 times that observed from the fossil record (1). This extinction crisis has motivated the scientific community to understand the consequences of reduced biodiversity for the dynamics of ecosystems, especially those that provide basic services to ...
openaire   +2 more sources

Resilience of Tropical Ecosystems to Ocean Deoxygenation [PDF]

open access: yesTrends in Ecology & Evolution, 2021
The impacts of ocean deoxygenation on biodiversity and ecosystem function are well established in temperate regions, and here we illustrate how the study of hypoxia in tropical ecosystems can offer insights of general importance. We first describe how mechanisms of resilience have developed in response to naturally occurring hypoxia across three ...
Andrew H, Altieri   +4 more
openaire   +2 more sources

Precipitation as driver of carbon fluxes in 11 African ecosystems [PDF]

open access: yes, 2008
This study reports carbon and water fluxes between the land surface and atmosphere in eleven different ecosystems types in Sub-Saharan Africa, as measured using eddy covariance (EC) technology in the first two years of the CarboAfrica network operation ...
F. Timouk   +121 more
core   +2 more sources

A Database of Radiocarbon Dates for Palaeoenvironmental Research in Eastern Africa

open access: yesOpen Quaternary, 2016
Radiocarbon dating is one of the most widely available and applied techniques to develop Late Quaternary chronologies of many ecosystems and is, thus, utilized in Quaternary studies, archaeology, hydrology, geomorphology, palaeoanthropology ...
Colin Courtney Mustaphi, Rob Marchant
doaj   +1 more source

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