Results 81 to 90 of about 180,116 (343)

Butterfly and moth habitat specialisation changes along an elevational gradient of tropical forests on Mount Cameroon

open access: yesOikos, EarlyView.
Niche breadth, reflecting the range of environmental conditions or resources a species can exploit, influences its distribution, persistence, vulnerability to environmental change, and interspecific interactions. The elevational niche‐breadth hypothesis predicts broader ecological niches at higher elevations due to increased environmental stress and ...
Fernando P. Gaona   +9 more
wiley   +1 more source

Sensitivity of the Amazon biome to high resolution climate change projections [PDF]

open access: yesActa Amazonica, 2016
: Despite the reduction in deforestation rate in recent years, the impact of global warming by itself can cause changes in vegetation cover. The objective of this work was to investigate the possible changes on the major Brazilian biome, the Amazon ...
Andre de Arruda LYRA   +2 more
doaj   +1 more source

On Avatar: digital commerce as activist pedagogy? [PDF]

open access: yes, 2013
Contemporary media allow digital environments to function as transnational classrooms, a multidimensional public sphere accessible to people with Internet connection.
Tzanelli, R
core   +1 more source

Hydrologic controls on seasonal and inter-annual variability of Congo River particulate organic matter source and reservoir age [PDF]

open access: yes, 2017
We present dissolved organic carbon (DOC) concentrations, particulate organic matter (POM) composition (δ13C, δ15N, ∆14C, N/C), and particulate glycerol dialkyl glycerol tetraether (GDGT) distributions from a 34-month time-series near the mouth of the ...
Dinga, Bienvenu Jean   +6 more
core   +1 more source

Do Policy Capacities Matter for Federal Policy Design? Evidence From the Implementation of Three Social Policies in Brazil

open access: yesPublic Administration and Development, EarlyView.
ABSTRACT Bringing together the literature on policy design, policy capacity and policy making in multilevel systems, this paper argues that the effectiveness of policy design in federal countries depends, ceteris paribus, on the adequacy of federal and local policy capacities.
Giliberto Capano   +1 more
wiley   +1 more source

Discrepancies in precipitation trends between observational and reanalysis datasets in the Amazon Basin

open access: yesScientific Reports
The Amazon rainforest is a region of global importance as it accounts for 10% of terrestrial biodiversity and stores at least 10 years’ worth of global anthropogenic carbon dioxide ( $$\hbox {CO}_2$$ ) emissions.
Andrew Polasky   +3 more
doaj   +1 more source

Harmonising digitised herbarium data to enhance biodiversity knowledge: Major steps towards an updated checklist for the flora of Greenland

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Herbaria worldwide hold centuries of plant data that are key to understanding and protecting biodiversity; however, even with increased digital access, differences in plant naming systems make it difficult to compare records. We developed a semi‐automated workflow that standardises species names and organises herbaria records from multiple institutions
Brandon Samuel Whitley   +17 more
wiley   +1 more source

Influence of flooding underneath the Amazon rainforest on Sentinel-1 backscatter [PDF]

open access: gold, 2023
Felix Cremer   +6 more
openalex   +1 more source

Unexpected seasonality in quantity and composition of Amazon rainforest air reactivity

open access: yesNature Communications, 2016
The degree to which biogenic volatile organic compounds released by the Amazon canopy impact oxidation capacity remains uncertain. Here, the authors evaluate the vertical distribution of total hydroxyl radical reactivity and individual trace gases in the
A. C. Nölscher   +6 more
doaj   +1 more source

XGBOOST and Multitemporal DETER Data for Deforestation Forecasting [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This paper reports research that is part of a project to combat deforestation in the Brazilian Amazon rainforest by developing an online system designed to forecast deforestation risk over the short term, spanning 2 to 4 weeks.
L. E. C. La Rosa   +10 more
doaj   +1 more source

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