Results 61 to 70 of about 621,525 (250)

Fonio (Digitaria exilis and Digitaria iburua) in Nigeria: Regional cultivation patterns, landrace diversity, and farmer knowledge for conserving a climate‐resilient indigenous cereal

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Fonio (Digitaria exilis and Digitaria iburua) cereals are valued for their drought resilience, adaptability to poor soils, and cultural importance. In Nigeria, where both species are cultivated, fonio has declined due to labor‐intensive processing, lower yields, and changing livelihood choices. By documenting 21 landraces (15 D. exilis and 6 D. iburua),
Ishaq Muawiyya   +4 more
wiley   +1 more source

Rainfall or Price Variability: What Determines Rangeland Management Decisions? A Simulation-Optimization Approach to South African Savannas [PDF]

open access: yes
Savannas cover the greater part of Africa and Australia and almost half of South America and contribute to the livelihoods of more than 350 million people.
Kantelhardt, Jochen   +3 more
core  

Niche‐tracking as a collecting method: Habitat‐targeted search strategies for taxon‐focused botany

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Biodiversity science depends on more than collecting plants—it depends on how we search for them. Although GPS and digital maps have transformed fieldwork, they can also encourage repeated visits to the same easy‐to‐access sites, leaving other habitats and populations unknown to science.
Lucas C. Marinho   +2 more
wiley   +1 more source

Fire Severity Mapping System for Australia

open access: yesBiodiversidade Brasileira, 2019
"Savanna Burning" methodologies to calculate greenhouse gas emissions (GHGEs) are applied across the tropical savannas and rangelands of north Australia.
Andrew Craig Edwards   +3 more
doaj   +3 more sources

Cambios en el uso del suelo y deforestación en el sur de los estados de Campeche y Quintana Roo, México

open access: yesInvestigaciones Geográficas, 1999
Landsat MSS satellite imagery from 1975 to 1990 were analyzed in order to estimate the rates of conversion of tropical forests and savannas to cropland and pasture in the southern Yucatán Peninsula of Mexico.
Sergio Cortina Villar   +2 more
doaj   +1 more source

Improved Cerrado Wetland Mapping Through Seasonal Moisture Metrics, Terrain Information and Semantic Segmentation

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Brazil's Cerrado valley wetlands—swamp savanna and gallery forest—are highly important for the biome's water cycle and carbon storage and are susceptible to degradation from the impacts of land use expansion and the climate crisis. In support of their detailed monitoring and assessment, we developed and tested a transferable mapping approach that ...
Felix Beer   +6 more
wiley   +1 more source

Charcoal re-combustion efficiency in tropical savannas

open access: yes, 2014
Mass balance considerations suggest a significant gap in our understanding of the processes by which pyrogenic carbon (PC) is re-mineralized in the environment.
Goodrick, Iain   +5 more
core   +1 more source

frontiermetrics: An R Package for Characterizing Deforestation Frontiers

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Deforestation frontiers are major drivers of biodiversity loss, carbon emissions, and ecosystem degradation, yet our understanding of how deforestation progresses in these frontiers is limited. We present frontiermetrics, an R package to quantify a range of metrics describing the speed, severity, and spatio‐temporal patterns of forest loss. The package
Pablo Yair Huais   +5 more
wiley   +1 more source

Savanna aliens [PDF]

open access: yes, 2010
Numerous alien plant species are invading African savannas causing loss of biodiversity and altering ecosystem functioning. The ecological factors and underlying mechanisms causing these invasions are poorly understood.
Masocha, M.
core  

Highlighting Biome-Specific Sensitivity of Fire Size Distributions to Time-Gap Parameter Using a New Algorithm for Fire Event Individuation

open access: yesRemote Sensing, 2016
Detailed spatial-temporal characterization of individual fire dynamics using remote sensing data is important to understand fire-environment relationships, to support landscape-scale fire risk management, and to obtain improved statistics on fire size ...
Duarte Oom   +3 more
doaj   +1 more source

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