Results 91 to 100 of about 72,458 (351)

Winners and losers: tropical forest tree seedling survival across a West African forest–savanna transition

Ecology and Evolution, 2016
Forest encroachment into savanna is occurring at an unprecedented rate across tropical Africa, leading to a loss of valuable savanna habitat. One of the first stages of forest encroachment is the establishment of tree seedlings at the forest–savanna ...
Anabelle W. Cardoso, José A. Medina‐Vega, Y. Malhi, S. Adu‐Bredu, George K.D. Ametsitsi, G. Djagbletey, Van Langevelde, E. Veenendaal, I. Oliveras   +8 more
semanticscholar   +1 more source

Effects of repeated burning on woody vegetation structure and composition in a semi-arid southern African savanna

, 2011
The objective of this study was to investigate the effects of repeated dry season annual hot fires on woody plants in a semiarid southern African savanna in Zimbabwe.
Gandiwa, E.
core  

Fire‐induced shifts in activity patterns of predators and prey in the Brazilian Pantanal

The Journal of Wildlife Management, EarlyView.
Using camera trap data, we observed that 5 of 6 prey species showed statistically significant changes in temporal activity patterns, while jaguars were the only predator species to adjust activity when comparing pre‐fire and post‐fire periods in an isolated rocky formation in the Pantanal region.
Sergio Eduardo Barreto de Aguiar, Grasiela Edith Oliveira de Porfirio, Leonardo França do Nascimento, Josiel de Oliveira Coelho, Mariana Alves Carvalho Queiroz, Geovani Vinco Tonolli, Wener Hugo Arruda Moreno, Diego Francis Passos Viana, Rocío Bardales, Matthew Hyde, Ricardo Daniel Ortiz‐Hoyos, Nayara Yoshie Sano, Filipe Martins Santos   +12 more
wiley   +1 more source

Improving the Prediction of African Savanna Vegetation Variables Using Time Series of MODIS Products

Isprs Journal of Photogrammetry and Remote Sensing, 2017
African savanna vegetation is subject to extensive degradation as a result of rapid climate and land use change. To better understand these changes detailed assessment of vegetation structure is needed across an extensive spatial scale and at a fine ...
M. Tsalyuk, M. Kelly, W. Getz
semanticscholar   +1 more source

Biochar‐Induced Shifts in Fungal Community Structure and Their Association With Soil Physical Properties in Degraded Soil From the Brazilian Semiarid

Land Degradation &Development, EarlyView.
ABSTRACT Soil degradation compromises ecosystem functioning. Biochar, a carbon‐rich amendment, has gained attention as a promising strategy to enhance soil structure and restore microbial balance. This study investigated the effects of two biochars, cashew bagasse biochar (CBB) and a co‐pyrolyzed biochar produced from sewage sludge and cashew pruning ...
João Marcos Rodrigues dos Santos, Arthur Prudêncio de Araujo Pereira, Kaio Gráculo Vieira Garcia, Ícaro Vasconcelos do Nascimento, Francisco Luan Almeida Barbosa, Tiago da Costa Dantas Moniz, Gilvanete da Silva Henrique, Murilo de Sousa Almeida, Vania Maria Maciel Melo, Mirian Cristina Gomes Costa, Helon Hébano de Freitas Sousa, Adriana Guirado Artur, Christiana de Fátima Bruce da Silva, Odair Pastor Ferreira, Antônio Gomes de Souza Filho, Erika Valente de Medeiros, Ademir Sergio Ferreira Araujo, Rafael Santiago da Costa, Jaedson Cláudio Anunciato Mota   +18 more
wiley   +1 more source

SOIL TILLAGE AND FERTILIZER EFFECTS ON SOIL MOISTURE RETENTION, GROWTH AND SEED COTTON YIELD OF THE POPULAR FK37 COTTON IN NORTHERN GHANA. [PDF]

Journal CleanWAS
Cotton is a cash crop and enhances farmer livelihoods in northern Ghana. However, cotton yields are diminished because of drought and poor agronomic practices that result in lower lint quality.
Ramson Adombilla, Emmanuel Boachie Chamba, Foster Kangben, Abeka Hammond   +3 more
doaj   +1 more source

Snapshot Serengeti, high-frequency annotated camera trap images of 40 mammalian species in an African savanna

Scientific Data, 2015
Camera traps can be used to address large-scale questions in community ecology by providing systematic data on an array of wide-ranging species. We deployed 225 camera traps across 1,125 km2 in Serengeti National Park, Tanzania, to evaluate spatial and ...
A. Swanson, M. Kosmala, C. Lintott, Robert Simpson, Arfon M. Smith, C. Packer   +5 more
semanticscholar   +1 more source

Dicrananthera hedyotidea C. Presl. (Melastomataceae) in Maranhão state, Brazil: first record and ecological niche model of the species

Nordic Journal of Botany, EarlyView.
Dicrananthera C. Presl. is a monospecific genus of the tribe Marcetieae, comprising perennial herbs typically occurring in areas adjacent to wetlands. The species exhibits a disjunct distribution, with confirmed records in both the Amazon and Atlantic Forest domains.
Elias Julio Oliveira Correa, Sandro Márcio dos Santos Junior, Antônio Fernando Costa da Silva, Kalynne Nayara Lima dos Santos, Eduardo Bezerra de Almeida Jr   +4 more
wiley   +1 more source

Pyramiding aphid resistance genes into the elite cowpea variety, Zaayura, using marker-assisted backcrossing

Heliyon
The cowpea aphid (Aphis cracivora) is a cosmopolitan insect pest that causes economic damage on cowpea. Although the pest persists at all the growth stages of the crop, in West Africa, aphids are the only major insect pests that farmers regularly control
Patrick Attamah, Francis Kusi, Alexander Wireko Kena, Frederick J. Awuku, Salim Lamini, Gloria Mensah, Mukhtaru Zackaria, Emmanuel Yaw Owusu, Richard Akromah   +8 more
doaj   +1 more source

The pyrethroid knock-down resistance gene in the Anopheles gambiae complex in Mali and further indication of incipient speciation within An. gambiae s.s.

, 2003
In Mali the Anopheles gambiae complex consists of An. arabiensis and Mopti, Savanna and Bamako chromosomal forms of An. gambiae s.s. Previous chromosomal data suggests a complete reproductive isolation among these forms. Sequence analysis of rDNA regions
Touré, YT, Coulibaly, M, ALLOUECHE A., COLUZZI BARTOCCIONI, Caio Mario, PETRARCA, Vincenzo, FANELLO C., Santolamazza, F, DOLO G., SANTOLAMAZZA, FEDERICA, Dolo, G, della Torre, A, Coluzzi, M, COULIBALY M., DELLA TORRE, Alessandra, Fanello, C, CURTIS C. F., TOURE' Y. T., Curtis, CF, Fanello, Caterina, Petrarca, V, Alloueche, A   +20 more
core   +1 more source