Results 21 to 30 of about 66,155 (205)

INFLUÊNCIA DO MANEJO FLORESTAL E DO DESMATAMENTO NA OFERTA DE MADEIRAS TROPICAIS NA AMAZÔNIA BRASILEIRA [PDF]

Ciência Florestal, 2004
Este trabalho apresenta uma análise do comportamento, do desempenho e do impacto do preço da madeira, do manejo florestal sustentável e do desmatamento na oferta de madeiras tropicais na região Amazônica.
Alexandre Anders Brasil, Antonio Carlos do Prado, Humberto Angelo   +2 more
doaj  

Do spatial and temporal scales affect the efficiency of surrogates in ant monitoring on the hydroelectric power-plant area in Brazilian Amazon?

Ecological Indicators, 2021
In the last decade, we have experienced a huge loss of biodiversity on the planet. One of the possible ways to overcome this loss is to focus on places of human interest, monitoring the changes and the impacts on biodiversity.
Jorge Luiz Pereira Souza, Itanna Oliveira Fernandes   +1 more
doaj   +1 more source

Restructuring of the "Macaronesia" biogeografic unit: a marine multi-taxon biogeographical approach [PDF]

, 2019
The Azores, Madeira, Selvagens, Canary Islands and Cabo Verde are commonly united under the term “Macaronesia”. This study investigates the coherency and validity of Macaronesia as a biogeographic unit using six marine groups with very different ...
Afonso, Pedro, Baptista, Lara, Berning, Björn, Brito, Alberto, Cordeiro, Ricardo, Falcón, Jésus J.M., Floeter, Sergio S.R., Freitas, Rui, González, José Antonio, Haroun, Ricardo, Johnson, Markes M.E., Madeira, Patrícia, Martínez, Alejandro, Melo, Carlos C.S., Neto, Ana Isabel, Nunes De Matos Farminhão, João, Núñez, Jorge, Porteiro, Filipe, Rebelo, Ana Cristina, Romeiras, Maria, Silva, Luís, Viera-Rodríguez, María Ascensión, Wirtz, Peter, Ávila, Sérgio S.P.   +23 more
core   +3 more sources

Crescimento diamétrico de Brosimum guianenses em uma floresta tropical após a colheita de madeira, Moju-PA

Revista de Ciências Agrárias, 2012
This study aimed to evaluate the Brosimum guianenses (Aubl) Huber behavior in relation to different gap sizes from selective logging carried out in the Experimental Station of Embrapa Amazonia Oriental, in the city of Moju-Para. Nine gaps had been selected from selective logging, classified as small (200-400 m2 ), medium (401-600 m2 ) and large gaps ...
Vivian Barroso Almeida, Fernando Cristóvam da Silva Jardim   +1 more
openaire   +1 more source

Hydropeaking Operations of Two Run-of-River Mega-Dams Alter Downstream Hydrology of the Largest Amazon Tributary

Frontiers in Environmental Science, 2020
Large storage dams have widely documented impacts on downstream aquatic environments, but hydroelectric dams with little or no capacity for storage of water inflows (i.e., run-of-river) have received less attention.
Rafael M. Almeida, Rafael M. Almeida, Rafael M. Almeida, Stephen K. Hamilton, Stephen K. Hamilton, Stephen K. Hamilton, Emma J. Rosi, Nathan Barros, Carolina R. C. Doria, Alexander S. Flecker, Ayan S. Fleischmann, Alexander J. Reisinger, Fábio Roland   +12 more
doaj   +1 more source

A new record of fossil wood of Vochysiaceae from the Upper Pleistocene (Arroyo Feliciano Formation), Argentina, South America [PDF]

, 2015
A new species of Qualeoxylon Suguio & Mussa is described from the Late Pleistocene Arroyo Feliciano Formation of the Gualeguay Basin on eastern Argentina.
Brea, Mariana, Moya, Eliana Vanesa
core   +1 more source

A description of mercury in fishes from the Madeira River Basin, Amazon, Brazil Um estudo descritivo do mercúrio em peixes da bacia do Rio Madeira, Amazônia, Brasil

Acta Amazonica, 2008
Over the last 20 years several projects carried on the Madeira River basin in the Amazon produced a great amount data on total Hg concentration in different fish species.
Wanderley Rodrigues Bastos, Mauro de Freitas Rebelo, Márlon de Freitas Fonseca, Ronaldo de Almeida, Olaf Malm   +4 more
doaj   +1 more source

Ensaio de espaçamento com Caroba - Jacaranda copaia (Aubl.) D. Don. Bignontaceae [PDF]

Acta Amazonica, 1989
RESUMONa Estação Experimental de Silvicultura Tropical (E.E.S.T.) do INPA-Manaus, foi instalado no ano de 1980 um experimento para Caroba em três (3) espaçamentos.
Paulo de Tarso Barbosa Sampaio, Antenor Ρereira Barbosa, Noeli Paulo Fernandes   +2 more
doaj   +1 more source

Large emissions from floodplain trees close the Amazon methane budget [PDF]

, 2017
Wetlands are the largest global source of atmospheric methane (CH4), a potent greenhouse gas. However, methane emission inventories from the Amazon floodplain, the largest natural geographic source of CH4 in the tropics, consistently underestimate the ...
A Siegenthaler, AA Bloom, AA Bloom, AH Devol, AJ Webb, Alex Enrich-Prast, B Ringeval, C Frankenberg, C Frankenberg, C Wilson, Cassia Mônica Sakuragui, D Bastviken, David Bastviken, Edward R. C. Hornibrook, EM Latrubesse, Emanuel Gloor, F Keppler, GO Martinson, H Rusch, H Schaefer, HO Sawakuchi, Humberto Marotta, JB Miller, JM Melack, John Bharat Miller, KB Bartlett, L Belger, LL Hess, LL Hess, LS Santiago, Luana S. Basso, Luana Silva Braucks Calazans, Luciana V. Gatti, Olaf Malm, R Fisher, Roberta Bittencourt Peixoto, RR Draxler, S Kirschke, S Pitz, SR Pangala, SR Pangala, SR Pangala, Sunitha R. Pangala, Veronika Beck, Vincent Gauci, Wanderley Rodrigues Bastos, ZP Wang   +46 more
core   +1 more source

Mineralogia e química dos sedimentos de fundo do médio e baixo Madeira e de seus principais tributários: Amazonas - Brasil Mineralogy and chemistry of bottom sediments of the middle and lower Madeira River and its main tributaries: Amazonas - Brazil

Acta Amazonica, 2011
O objetivo deste trabalho foi investigar a variação composicional e mineralógica dos sedimentos de fundo transportados pelos grandes rios da Amazônia, com nascentes nos Andes provenientes de rochas cratônicas.
Maria Mireide Andrade Queiroz, Adriana Maria Coimbra Horbe, Candido Augusto Veloso Moura   +2 more
doaj   +1 more source