Results 11 to 20 of about 63,698 (307)

Savannas can functionally turn into forests in the Amazonia/Cerrado transition

Biodiversidade Brasileira, 2021
Adjacent forest formations are ecotones that can reveal changes in the vertical structure of tropical biomes e.g., Cerrado (brazilian Savanna). Litterfall is a metric that shows some of these alterations.
Marco Bruno Xavier Valadão, Karla Monique Silva Carneiro, Ben Hur Marimon Junior, Fabiana Piontekowski Ribeiro, Beatriz Schwantes Marimon   +4 more
doaj   +1 more source

Cultivar and insecticide spraying time effects on cowpea insect pests and grain yield in northern Ghana

Annals of Agricultural Sciences, 2019
Insecticide application is the recommended practice for control of insect pests on cowpea (Vigna unquiculata (L) Walp). However, these have negative effects on humans and the environment, apart from being costly for resource-poor farmers.
F. Kusi, J.A. Nboyine, M. Abudulai, A. Seidu, Y.R. Agyare, I. Sugri, M. Zakaria, R.K. Owusu, S.K. Nutsugah, L. Asamoah   +9 more
doaj   +1 more source

Structure and composition of Androstachys johnsonii woodland across various strata in Gonarezhou National Park, southeast Zimbabwe [PDF]

, 2011
A study on the structure and composition of Androstachys johnsonii Prain (Euphorbiaceae) woodland across three strata was conducted in Gonarezhou National Park (GNP), southeast Zimbabwe.
Chikorowondo, G., Gandiwa, E., Muvengwi, J., Zisadza-Gandiwa, P.   +3 more
core   +2 more sources

Quantifying the relative importance of greenhouse gas emissions from current and future savanna land use change across northern Australia [PDF]

Biogeosciences, 2016
The clearing and burning of tropical savanna leads to globally significant emissions of greenhouse gases (GHGs); however there is large uncertainty relating to the magnitude of this flux.
M. Bristow, M. Bristow, L. B. Hutley, J. Beringer, S. J. Livesley, A. C. Edwards, S. K. Arndt   +6 more
doaj   +1 more source

Effects of nitrogen and phosphorus availability on the early growth of two congeneric pairs of savanna and forest species

Brazilian Journal of Biology, 2021
In the tropical region, savannas and seasonal forests, both highly diverse biomes, occur side by side, under the same climate. If so, that mosaic cannot be explained solely by climatic variables, but also by fire, water availability and soil status ...
B. Paganeli, M. A. Batalha
doaj   +1 more source

Reframing tropical savannization: linking changes in canopy structure to energy balance alterations that impact climate

Ecosphere, 2020
Tropical ecosystems are undergoing unprecedented rates of degradation from deforestation, fire, and drought disturbances. The collective effects of these disturbances threaten to shift large portions of tropical ecosystems such as Amazon forests into ...
Scott C. Stark, David D. Breshears, Susan Aragón, Juan Camilo Villegas, Darin J. Law, Marielle N. Smith, David M. Minor, Rafael Leandro deAssis, Danilo Roberti Alves deAlmeida, Gabriel deOliveira, Scott R. Saleska, Abigail L. S. Swann, José Mauro S. Moura, José Luis Camargo, Rodrigo daSilva, Luiz E. O. C. Aragão, R. Cosme Oliveira   +16 more
doaj   +1 more source

Emission factors for open and domestic biomass burning for use in atmospheric models [PDF]

, 2010
Biomass burning (BB) is the second largest source of trace gases and the largest source of primary fine carbonaceous particles in the global troposphere. Many recent BB studies have provided new emission factor (EF) measurements.
Akagi, S. K., Alvarado, M. J., Crounse, J. D., Karl, T., Reid, J. S., Wennberg, P. O., Wiedinmyer, C., Yokelson, R. J.   +7 more
core   +3 more sources

Contrasting photosynthetic characteristics of forest vs. savanna species (Far North Queensland, Australia) [PDF]

Biogeosciences, 2014
Forest and savanna are the two dominant vegetation types of the tropical regions with very few tree species common to both. At a broad scale, it has long been recognised that the distributions of these two biomes are principally governed by precipitation
K. J. Bloomfield, T. F. Domingues, G. Saiz, M. I. Bird, D. M. Crayn, A. Ford, D. J. Metcalfe, G. D. Farquhar, J. Lloyd   +8 more
doaj   +1 more source

Assessing the Australian Termite Diversity Anomaly: How Habitat and Rainfall Affect Termite Assemblages

Frontiers in Ecology and Evolution, 2021
Termites are important ecosystem engineers in tropical habitats, with different feeding groups able to decompose wood, grass, litter, and soil organic matter.
Rebecca A. Clement, Rebecca A. Clement, Habacuc Flores-Moreno, Lucas A. Cernusak, Alexander W. Cheesman, Alexander W. Cheesman, Abbey R. Yatsko, Steven D. Allison, Steven D. Allison, Paul Eggleton, Amy E. Zanne   +10 more
doaj   +1 more source

The onset of grasses in the Amazon drainage basin, evidence from the fossil record [PDF]

, 2020
Poaceae (the grass family) originated in the Cretaceous, but first dominate the palynological records of the Amazon drainage basin (ADB) in the Neogene (23 to 2.5 million years ago (Ma)).
Hoorn, Carina, Kirschner, Judith A.
core   +3 more sources