Results 51 to 60 of about 19,983 (162)

Changements de l’occupation et l’utilisation du sol dans les villages polarisés par l’Université Gaston BERGER de 1980 à 2020 [PDF]

Pensées Genre, Penser Autrement, 2023
L’analyse des changements sur l’occupation et l’usage du sol autour de l’Université Gaston BERGER (UGB) de Saint-Louis (Sénégal) requiert une méthodologie plus ou moins basée sur la télédétection spatiale notamment par le traitement d’images ...
Baba SY
doaj  

An evidence map and guide for using community science, remote sensing, and environmental DNA for rare plant detection

Conservation Science and Practice, Volume 7, Issue 10, October 2025.
How can we use novel techniques such as community science, remote sensing, and environmental DNA to detect rare plants? Our evidence map provides information on the types of plants detected with each technique and the habitats in which the studies took place, as well as potential solutions to help overcome problems found with these techniques, sources ...
Ana Hernández Martínez de la Riva, Trina Rytwinski, Matthew Spetka, Joseph R. Bennett   +3 more
wiley   +1 more source

Etude de la dynamique d’occupation du sol du système lacustre Ilodi dans la province du Kwango, République démocratique du Congo

Revue Congolaise des Sciences et Technologies
Cette étude analyse la dynamique d’occupation du sol et la diversité floristique du système lacustre Ilodi, situé dans la province du Kwango (RDC), afin d’en déterminer les changements environnementaux intervenant dans les systèmes lacustres tropicaux au
Rigobert Zola Lunga, Cush Luwesi Ngonzo, Bonaventure Nyami Lele, Carmel Manzanza Kifukieto, Roger Vumilia Kizungu, Ruffin Nsielolo Kitoko, Yves Aseke Lukuke, Doudou Mayaka Kintu, Génie-spirou Lutonadio, Patience Mpia Ngelikoto   +9 more
doaj   +1 more source

Inter‐Instrument Variability of Vaisala CL61 Lidar‐Ceilometer's Attenuated Backscatter, Cloud Properties and Mixed‐Layer Height

Meteorological Applications, Volume 32, Issue 5, September/October 2025.
Instrument‐related differences between six co‐located Vaisala CL61 automatic lidar‐ceilometers are quantified for several observed variables: profiles of attenuated backscatter (β) and the linear depolarisation ratio, as well as derived cloud variables and mixed‐layer height.
Dana Looschelders, Andreas Christen, Sue Grimmond, Simone Kotthaus, Daniel Fenner, Jean‐Charles Dupont, Martial Haeffelin, William Morrison   +7 more
wiley   +1 more source

A diffusion model to predict spatial and temporal population dynamics of Rift valley fever vectors in Northern Senegal [PDF]

, 2010
We have developed an explicit spatial and temporal model to predict the population dynamics and dispersal of the two main mosquito vector species (Aedes vexans and Culex poicilipes) involved in Rift Valley fever virus (RVFV) transmission in Senegal ...
Bégué, Agnès, Chevalier, Véronique, Degenne, Pascal, Fontenille, Didier, Guégan, Jean-François, Lancelot, Renaud, Lo Seen, Danny, Soti, Valérie, Thiongane, Yaya, Tran, Annelise   +9 more
core  

Evaluating patterns of plant phenological progression and pronghorn movement behaviors across diverse landscapes Évaluation des modèles de progression phénologique des plantes et des comportements de mouvement des antilopes d'Amérique dans divers paysages

Wildlife Monographs, Volume 218, Issue 1, September 2025.
We found variable spatial and temporal patterns and predictability of plant phenological progression across 8 pronghorn ranges in Montana. We sampled potential exposure to phenology values for migrants and residents along spring movement paths and summer ranges and found that within herds and years the resident and migrant movement strategies conferred
Kelly M. Proffitt, J. Terrill Paterson, Jesse D. DeVoe, Christopher P. Hansen, Joshua J. Millspaugh   +4 more
wiley   +1 more source

Observation spatiale pour l'agriculture en Afrique: potentiels et défis [PDF]

, 2016
Ce rapport a pour objectif de faire un état des lieux des usages des technologies satellitaires dans le développement et l'analyse des agricultures africaines, afin de mieux cerner les difficultés actuelles, identifier les contraintes sur lesquelles la ...
Bégué, Agnès, Charrier, Bertrand (ed.), Leroux, Louise, Lo Seen, Danny, Morant, Philippe, Tonneau, Jean-Philippe, Torre, Claude (ed.)   +6 more
core  

Microwave snow emission modeling uncertainties in boreal and subarctic environments [PDF]

The Cryosphere, 2016
This study aims to better understand and quantify the uncertainties in microwave snow emission models using the Dense Media Radiative Theory Multi-Layer model (DMRT-ML) with in situ measurements of snow properties.
A. Roy, A. Royer, O. St-Jean-Rondeau, B. Montpetit, G. Picard, A. Mavrovic, N. Marchand, A. Langlois   +7 more
doaj   +1 more source

Natural Forest Clearings Enable the Persistence of Stable Spotted Hyena Populations in Congo Basin Rainforests

Biotropica, Volume 57, Issue 5, September 2025.
Spotted hyenas (Crocuta crocuta) are known to range across broad savanna regions of sub‐Saharan Africa, but there is very limited understanding of how and to what extent they use lowland rainforest habitats. We use camera trap data and GPS telemetry to show that bais, natural rainforest clearings, can support hyenas living exclusively in the rainforest—
Ella M. Bradford, Evan G. Hockridge, Gwili E. M. Gibbon, Gloire Kibongui, Adrich Mouamana, Gildas Ngama, Nicholas Osner, Andrew B. Davies   +7 more
wiley   +1 more source

Contribution of NOAA- AVHRR data to African savan nahs Characterization [PDF]

, 2005
The Advanced Very High Resolution Radiometer (AVHRR) is currently used for vegetation monitoring. Information on the state and evolution of the vegetation cover on continental areas is routinely obtained from Global Vegetation Index data (GVI).
Gond, Valéry
core