Results 21 to 30 of about 1,523,324 (208)

Patterns of distribution and abundance of larval phosichthyidae (actinopterygii, stomiiformes) in southeastern Brazilian waters [PDF]

open access: yes, 2011
Horizontal and vertical distribution patterns and abundance of larval phosichthyids were investigated from oblique and depth-stratified towns off Southeastern brazilian waters, from São Tomé cape (41ºW.; 22ºS.) to São Sebastião island (45ºW.; 24ºS.). The
GOÇALO, Cássia Gôngora   +2 more
core   +3 more sources

Distribuição de colmo na estrutura vertical de pastos de capim Aruana e azevém anual submetidos a pastejo intermitente por ovinos Distribution of stem in the vertical structure of Aruana guineagrass and Annual ryegrass pastures subjected to rotational grazing by sheep

open access: yesCiência Rural, 2012
O objetivo deste estudo foi determinar a participação relativa de colmo na estrutura vertical de pastos de capim Aruana e azevém anual submetidos a estratégias de pastejo intermitente por ovinos.
Guilherme Doneda Zanini   +4 more
doaj   +1 more source

Phytoplankton abundance, dominance and coexistence in an eutrophic reservoir in the state of Pernambuco, Northeast Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2011
The present study reports the phytoplankton abundance, dominance and co-existence relationships in the eutrophic Carpina reservoir, Pernambuco, Brazil. Sampling was carried out at six different depths bimonthly at a single reservoir spanning two climatic
Giulliari A. S. T. Lira   +3 more
doaj   +1 more source

Diel dynamic of phytoplankton functional groups in a tropical water supply, Extremoz Lake, northeastern Brazil

open access: yesActa Limnologica Brasiliensia, 2014
AIM: This study analyzed - the diel and vertical dynamics of phytoplankton functional groups in a natural tropical lake (Extremoz Lake, northeast Brazil), to investigate and understand the driver factors of the community during a severe drought period ...
Thársia da Silva Pinto, Vanessa Becker
doaj   +1 more source

Distribuição vertical não uniforme de sedimento fino no rio Amazonas () [PDF]

open access: yesActa Amazonica, 1982
Resumo Partículas suspensas de sedimentos menores que 60μm não estão uniformemente distribuídas nas águas dos rios Amazonas e Solimões. Concentrações destas partículas finas na superfície da água são somente a metade da concentração do que em amostras ...
Wiiliam F. Curtis   +4 more
doaj   +1 more source

The Pleistocene Glyptodontidae Gray, 1869 (Xenarthra: Cingulata) of Colombia and some considerations about the South American Glyptodontinae [PDF]

open access: yes, 2012
Until recently, one well-characterized Pleistocene genus of the subfamily Glyptodontinae (Glyptodon ca. 1.08-0.0011 My) was recognized in South America.
Arenas Mosqueras, José E.   +3 more
core   +2 more sources

Fitossociologia de um fragmento de restinga herbáceo-subarbustiva no sul do Estado de Santa Catarina, Brasil

open access: yesHoehnea
RESUMO A vegetação de restinga é uma formação típica de ecossistemas costeiros de alta relevância ecológica. Dessa forma, o objetivo do estudo foi descrever a composição florística e estrutural de um fragmento de restinga herbáceo-subarbustiva localizada
Monique Bohora Schlickmann   +8 more
doaj   +1 more source

Areas of natural occurrence of melipona scutellaris Latreille, 1811(Hymenoptera: Apidae) in the state of Bahia, Brazil. [PDF]

open access: yes, 2012
The bee Melipona scutellaris is considered the reared meliponine species with the largest distribution in the North and Northeast regions of Brazil, with records from the state of Rio Grande do Norte down to the state of Bahia. Considering the importance
ALVES RMO   +29 more
core   +2 more sources

Distribuição espacial, fenologia da floração e síndrome floral de espécies de Bignonieae (Bignoniaceae)

open access: yesRodriguésia
RESUMO No Brasil, 85% das Bignoniaceae são representadas pela tribo Bignonieae, caracterizada pelo hábito trepador e arbustivo escandente. No Parque Estadual do Rio Doce (PERD), um dos últimos remanescente de Mata Atlântica em Minas Gerais, foram ...
Veridiana Vizoni Scudeller   +2 more
doaj   +1 more source

Vertical distribution of meiofauna on reflective sandy beaches

open access: yesBrazilian Journal of Oceanography, 2015
Extreme physical conditions usually limit the meiofauna occurrence and distribution in highly hydrodynamic environments such as reflective beaches. Despite sediment grains of the upper layers being constantly resuspended and deposited, the high energy of
Mariana de Oliveira Martins   +2 more
doaj   +1 more source

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