Results 51 to 60 of about 69,295 (229)

Evolution of trace gases and particles emitted by a chaparral fire in California [PDF]

, 2012
Biomass burning (BB) is a major global source of trace gases and particles. Accurately representing the production and evolution of these emissions is an important goal for atmospheric chemical transport models.
Akagi, S. K., Alvarado, M. J., Burling, I. R., Coe, H., Craven, J. S., McMeeking, G. R., Seinfeld, J. H., Taylor, J. W., Urbanski, S. P., Weise, D. R., Wold, C. E., Yokelson, R. J.   +11 more
core   +2 more sources

Floral resource diversity drives spatiotemporal variation in plant–pollinator network structure

Oikos, EarlyView.
Mechanisms underlying community assembly, including those related to species interactions, vary across space and time. Plant–pollinator networks exemplify these dynamics, where link rewiring and turnover mediate adaptations to environmental changes. Bees rely on diverse floral resources (e.g.
Caio S. Ballarin, Felipe W. Amorim, Blanca Arroyo‐ Correa, Pedro Jordano   +3 more
wiley   +1 more source

Quando o campo está a 5 mil metros de altitude: Orduña, Peru [PDF]

Ponto Urbe, 2017
Dia 9, sabado, llegada a Puno Sofia y yo embarcamos el sabado en Lima a las 19:30 rumbo a Puno. Como no hay aeropuerto en esta ciudad, a raiz de su accidentada topografia, bajamos a las 21:10 en Juliaca, ciudad vecina de 200.000 habitantes y desde ahi, en una van, en una hora de viaje, llegamos finalmente a la sede del Departamento de Puno.
openaire   +2 more sources

Convective injection and photochemical decay of peroxides in the tropical upper troposphere: Methyl iodide as a tracer of marine convection [PDF]

, 1999
The convective injection and subsequent fate of the peroxides H2O2 and CH3OOH in the upper troposphere is investigated using aircraft observations from the NASA Pacific Exploratory Mission-Tropics A (PEM-Tropics A) over the South Pacific up to 12 km ...
Blake, DR, Cohan, DS, Heikes, BG, Jacob, DJ, Schultz, MG   +4 more
core  

Floral trait similarity at the community‐level increases reproductive success suggesting facilitation through pollinator sharing

Oikos, EarlyView.
The ability of plants to attract pollinators is context‐dependent, influenced by floral traits, abundance, and resources from the plant community. Indirect interactions through shared pollinators, from competition to facilitation, may lead to varied reproductive outputs in plants, and the mechanisms behind these interactions remain to be fully ...
Marsal D. De Amorim, Pedro J. Bergamo, Elisa Thébault, Luís G. S. Perugini, Sabrina A. Lopes, André R. Rech, Pietro K. M. Maruyama   +6 more
wiley   +1 more source

CLIMATE CHANGE AND “CAMPOS DE ALTITUDE”: FORECASTS, KNOWLEDGE AND ACTION GAPS IN BRAZIL

Oecologia Australis, 2016
The recently published report of the Intergovernmental Panel on Climate Change (IPCC) acknowledges high altitude ecosystems in Latin America and elsewhere as some of the most vulnerable to climate change. The Brazilian Panel on Climate Change (PBMC, from the acronym in Portuguese) also recognizes the vulnerability of Brazilian high mountain ecosystems,
Fabio R. Scarano, Paula Ceotto, Gustavo Martinelli   +2 more
openaire   +2 more sources

Assessing wildfire dynamics during a megafire in Portugal using the MesoNH/ForeFire coupled model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Weather conditions affect megafires by inducing different fire behaviors over several days or weeks. The coupled MesoNH/ForeFire code was used to represent the dynamics of fire generating pyro‐convective clouds. To advance the understanding of wildfire dynamics, high‐resolution coupled fire–atmosphere modeling was employed.
Cátia Campos, Flavio Tiago Couto, Filippe L. M. Santos, Paulo Pinto, Carolina Purificação, Hugo Miguel Silva, João Rio, Manuel Lopes, Roberta Baggio, Jean‐Baptiste Filippi, Maria José Monteiro, Daniele Bortoli, Rui Salgado   +12 more
wiley   +1 more source

Notas sobre a ecologia e a preservação de Nothochilus coccineus Radlkofer (Scrophulariaceae), espécie endêmica ao Maciço do Caparaó, ES/MG Notes on the ecology and conservation of Nothochilus coccineus Radlkofer {Scrophulariaceae}, a species endemic to the Caparaó Massif, ES/MG

Acta Botânica Brasílica, 1999
O presente trabalho apresenta dados básicos sobre a ecologia e a distribuição de N. coccineus Radlk., a única espécie do gênero, endêmica nos campos de altitude do Maciço do Caparaó, sudeste do Brasil, no Parque Nacional do Caparaó.
Hugh DeForest Safford
doaj   +1 more source

Sementes esverdeados e qualidade de sementes de soja produzidas em campos de multiplicação com diferentes altitudes no sudoeste goiano

CONTRIBUCIONES A LAS CIENCIAS SOCIALES, 2023
A semente é um dos principais insumos agrícolas por conduzir ao campo características que irão determinar o manejo, sendo que a qualidade fisiológica das sementes é um fator de grande importância para o estabelecimento das lavouras e produção de grãos. A região de produção das sementes de soja é determinante pois, de acordo com a temperatura e umidade,
Guilherme Henrique da Costa Nunes, Andrea Bicca Noguez Martins, Lílian Vanussa Madruga De Tunes, Thiago Antonio Da Silva, Andréia da Silva Almeida, Anderson Fernando Lima Pereira, Marta Gubert Tremea, José Patrício Nunes De Souza   +7 more
openaire   +1 more source

Assessing the Impact of Targeted Poverty Alleviation Program on Poor Households With Different Causes of Poverty: Evidence From Rural China

Sustainable Development, EarlyView.
ABSTRACT Poverty alleviation is a critical concern in developing countries. China launched the Targeted Poverty Alleviation (TPA) program and implemented a series of anti‐poverty initiatives, aiming to reduce poverty and enhance the well‐being of rural households.
Shiyu Yan, Li Wang, David Andrew Barry, Zhineng Hu   +3 more
wiley   +1 more source