Results 11 to 20 of about 119,899 (191)

Fisheries management influences phytoplankton biomass of Amazonian floodplain lakes

Journal of Applied Ecology, Volume 58, Issue 4, Page 731-743, April 2021., 2021
Tropical freshwaters fisheries typically assume that fish biomass is controlled by bottom‐up mechanisms, so that overexploitation of large predators would not affect overall ecosystem productivity. Our results, however, show that top‐down forces are important drivers of primary productivity in tropical lakes, above and beyond the effects of bottom‐up ...
João Vitor Campos‐Silva, Carlos A. Peres, João Henrique Fernandes Amaral, Hugo Sarmento, Bruce Forsberg, Carlos Roberto Fonseca, Steven Vamosi   +6 more
wiley   +1 more source

Frugivory underpins the nitrogen cycle

Functional Ecology, Volume 35, Issue 2, Page 357-368, February 2021., 2021
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Tropical rainforests are populated by large frugivores that feed upon fruit‐producing woody species, yet their role in regulating the cycle of globally important biogeochemical elements such as nitrogen is still unknown.
Nacho Villar, Claudia Paz, Valesca Zipparro, Sergio Nazareth, Leticia Bulascoschi, Elisabeth S. Bakker, Mauro Galetti, Shawn Leroux   +7 more
wiley   +1 more source

Limited biomass recovery from gold mining in Amazonian forests

Journal of Applied Ecology, Volume 57, Issue 9, Page 1730-1740, September 2020., 2020
To achieve large‐scale restoration targets, Guyana and other Amazonian countries will be challenged to remediate previously mined lands. The recovery process is highly dependent on nitrogen availability rather than mercury contamination, affecting woody biomass regrowth.
Michelle Kalamandeen, Emanuel Gloor, Isaac Johnson, Shenelle Agard, Martin Katow, Ashmore Vanbrooke, David Ashley, Sarah A. Batterman, Guy Ziv, Kaslyn Holder‐Collins, Oliver L. Phillips, Eduardo S. Brondizio, Ima Vieira, David Galbraith, Ainhoa Magrach   +14 more
wiley   +1 more source

Vellozioid roots allow for habitat specialization among rock‐ and soil‐dwelling Velloziaceae in campos rupestres

Functional Ecology, Volume 34, Issue 2, Page 442-457, February 2020., 2020
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Plant growth on harsh substrates (habitat specialization) requires specific traits to cope with stressful conditions. We tested whether traits related to nutrient acquisition (root colonization by fungal symbionts, and plant morphological and ...
Anna Abrahão, Patricia de Britto Costa, Grazielle S. Teodoro, Hans Lambers, Diego L. Nascimento, Sara Adrián López de Andrade, Megan H. Ryan, Rafael Silva Oliveira, Katie Field   +8 more
wiley   +1 more source

Isolation and Identification of Sodium Fluoroacetate Degrading Bacteria from Caprine Rumen in Brazil

The Scientific World Journal, Volume 2012, Issue 1, 2012., 2012
The objective of this paper was to report the isolation of two fluoroacetate degrading bacteria from the rumen of goats. The animals were adult goats, males, crossbred, with rumen fistula, fed with hay, and native pasture. The rumen fluid was obtained through the rumen fistula and immediately was inoculated 100 μL in mineral medium added with 20 mmol L−
Expedito K. A. Camboim, Arthur P. Almeida, Michelle Z. Tadra-Sfeir, Felício G. Junior, Paulo P. Andrade, Chris S. McSweeney, Marcia A. Melo, Franklin Riet-Correa, T. Ledon, S. F. Porcella, B. I. Yoon   +10 more
wiley   +1 more source

ÉPOCAS, FORMAS DE APLICAÇÃO E DOSES DE NITROGÊNIO NA CULTURA DO MILHO EM CONDIÇÕES DE CERRADO

Colloquium Agrariae, 2021
Objetivou-se avaliar diferentes épocas, formas de aplicação e doses de nitrogênio nas características agronômicas, componentes de produção, produtividade de grãos, bem como a eficiência de utilização do nutriente na cultura do milho.
Maurílio de Sousa Netto, Fernando Castro de Oliveira, Lucas da Silva Araújo, Pedro Marques da Silveira, Paulo César Ribeiro da Cunha   +4 more
doaj  

Crescimento de porta-enxertos de citros em tubetes influenciados por doses de N [PDF]

Revista Brasileira de Fruticultura, 2002
Este trabalho teve como objetivo avaliar os efeitos de doses de N (0; 400; 800; 1.600; 3.200 e 4.800 mg/dm³ de N no substrato) sobre o crescimento de porta-enxertos de citros cultivados em tubetes.
ANTÔNIO DECARLOS NETO, DALMO LOPES DE SIQUEIRA, PAULO ROBERTO GOMES PEREIRA, VICTOR HUGO ALVAREZ V.   +3 more
doaj   +1 more source

Parâmetros ruminais e balanço de nitrogênio em ovinos alimentados com rações contendo resíduo da extração da polpa de tamarindo

Semina: Ciências Agrárias, 2015
Avaliou-se os parâmetros ruminais, o consumo, a produção fecal e urinária de nitrogênio e o balanço de nitrogênio (BN) em ovinos alimentados com níveis crescentes de resíduo da extração da polpa de tamarindo - REPT (0,0%, 5,0%, 10,0% e 15,0% na MS ...
Luiz Juliano Valério Geron, Jocilaine Garcia, Fabiana Gomes Costa, Sílvia Cristina de Aguiar, Edimar Barbosa Oliveira, Maria Isabel Leite da Silva, Luciano da Silva Cabral, Maria Aparecida Pereira Pierangeli, Lúcia Maria Zeoula, Alexandre Agostinho Mexia   +9 more
doaj   +1 more source

Green manure in coffee systems in the region of Zona da Mata, Minas Gerais: characteristics and kinetics of carbon and nitrogen mineralization. [PDF]

, 2008
The use of green manure may contribute to reduce soil erosion and increase the soil organic matter content and N availability in coffee plantations in the Zona da Mata, State of Minas Gerais, in Southeastern Brazil.
AITA C., ANDERSON J.D., ANDRADE C.M.S., BALDOCK J.A., BORKERT C.M., BRAGA J.M., CABRERA M.L., CARREIRO M.M., COBO J.G., COBO J.G., CURL E.A., Eduardo da Silva Matos, Eduardo de Sá Mendonça, FERRARI E.A., FOX R.H., HADAS A., HANDAYANTO E., HÄTTENSCHWILER S., Irene Maria Cardoso, JENSEN E.S., KEMPERS A.J., MAFONGOYA P.L., MAFONGOYA P.L., Marino Salgarello Coelho, MENDONÇA E.S., MONTEIRO H.C.F., MORGAN P.H., MUHR L., NIANG A.I., OLIVEIRA T.K., PACIULLO D.S.C., PALM C.A., Paulo César de Lima, PERIN A., Renato Faria Mateus, SANTOS V.S., SARRUGE J.R., SOARES P.G., STEVENSON F.J., SÁ N.M.H., THOMAS R.J., THÖNNISSEN C., TRINSOUTROT I., van SOEST P.J., WANG W.J., YANG J. E.   +45 more
core   +4 more sources

Influência das adubações nitrogenada e fosfatada sobre a composição químico-bromatológica do capim Marandu (Brachiaria brizantha (Hochst) Stapf cv. Marandu) - DOI: 10.4025/actascianimsci.v26i3.1837

Acta Scientiarum: Animal Sciences, 2008
O objetivo foi avaliar o efeito da adubação nitrogenada e fosfatada sobre teores de proteína bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA), digestibilidade in vitro da matéria seca (DIVMS) e teores de fósforo (P) do capim ...
Ulysses Cecato, Luiz Alberto Fontes Pereira, Clóves Cabreira Jobim, Elias Nunes Martins, Antonio Ferriani Branco, Sandra Galbeiro, Andréa Oliveira Machado   +6 more
doaj   +1 more source