Results 21 to 30 of about 513,528 (298)

Species richness-environment relationships of European arthropods at two spatial grains : habitats and countries [PDF]

open access: yes, 2012
We study how species richness of arthropods relates to theories concerning net primary productivity, ambient energy, water-energy dynamics and spatial environmental heterogeneity.
Ben A. Woodcock   +8 more
core   +7 more sources

Human Appropriated Net Primary Productivity of Complex Mosaic Landscapes

open access: yesFrontiers in Forests and Global Change, 2019
Quantifying human impact on the environment is increasingly important and particularly so in complex mosaic landscapes. Such landscapes are prolific in the developing world, notably in West African, small holder cocoa farming communities.
Christine Moore   +6 more
doaj   +1 more source

Asymmetric warming significantly affects net primary production, but not ecosystem carbon balances of forest and grassland ecosystems in northern China [PDF]

open access: yes, 2015
We combine the process-based ecosystem model (Biome-BGC) with climate change-scenarios based on both RegCM3 model outputs and historic observed trends to quantify differential effects of symmetric and asymmetric warming on ecosystem net primary ...
Axmacher, JC, Feng, J, Sang, W, Su, H
core   +1 more source

Net primary production of forests: a constant fraction of gross primary production? [PDF]

open access: yesTree Physiology, 1998
Considerable progress has been made in our ability to model and measure annual gross primary production (GPP) by terrestrial vegetation. But challenges remain in estimating maintenance respiration (R(m)) and net primary production (NPP). To search for possible common relationships, we assembled annual carbon budgets from six evergreen and one deciduous
R. H., Waring   +2 more
openaire   +2 more sources

Crop Yield Estimation in the Canadian Prairies Using Terra/MODIS-Derived Crop Metrics

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
We evaluated the utility of Terra/MODIS-derived crop metrics for yield estimation across the Canadian Prairies. This study was undertaken at the Census Agriculture Region (CAR) and the Rural Municipality (RM) of the province of Saskatchewan, in three ...
Jiangui Liu   +7 more
doaj   +1 more source

Quantitative Assessment of Factors Influencing the Spatiotemporal Variation in Carbon Dioxide Fluxes Simulated by Multi-Source Remote Sensing Data in Tropical Vegetation

open access: yesRemote Sensing, 2023
Vegetation plays a vital role in the global carbon cycle, a function of particular significance in regulating carbon dioxide fluxes within tropical ecosystems.
Ruize Xu   +4 more
doaj   +1 more source

Above-ground biomass and productivity in a rain forest of eastern South America [PDF]

open access: yes, 2008
: The dynamics of tropical forest woody plants was studied at the Nouragues Field Station, central French Guiana. Stem density, basal area, above-ground biomass and above-ground net primary productivity, including the contribution of litterfall, were ...
Bongers, F.J.J.M.   +8 more
core   +3 more sources

Maps measure net primary production [PDF]

open access: yesEos, Transactions American Geophysical Union, 2003
New maps of Earth's net primary production are the first consistent and continuous global measurements of the rate that plant life absorbs carbon from the atmosphere, NASA announced on 23 April.The maps incorporate measurements of plant properties collected by the Moderate Resolution Imaging Spectroradiometer, or MODIS, with other satellite‐ and ...
openaire   +1 more source

Fire intensity impacts on post-fire temperate coniferous forest net primary productivity [PDF]

open access: yesBiogeosciences, 2018
Fire is a dynamic ecological process in forests and impacts the carbon (C) cycle through direct combustion emissions, tree mortality, and by impairing the ability of surviving trees to sequester carbon.
A. M. Sparks   +5 more
doaj   +1 more source

Community level offset of rain use- and transpiration efficiency for a heavily grazed ecosystem in inner Mongolia grassland.

open access: yesPLoS ONE, 2013
Water use efficiency (WUE) is a key indicator to assess ecosystem adaptation to water stress. Rain use efficiency (RUE) is usually used as a proxy for WUE due to lack of transpiration data.
Ying Z Gao   +5 more
doaj   +1 more source

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