Results 81 to 90 of about 290,254 (223)
Composition of the fish fauna in a tropical estuary: the ecological guild approach
Scientia Marina, 2019 Ecological guilds have been widely applied for understanding the structure and functioning of aquatic ecosystems. This study describes the composition and the spatio-temporal changes in the structure of the fish fauna and the movements between the ...
Valdimere Ferreira +4 more
doaj +1 more source
Influence of Cladonia substellata Vainio extracts and usnic acid on germination and growth of Allium cepa L. seedlings [PDF]
, 1999 The effect of lichen extracts obtained from Cladonia substellata and its main constituent, on the germination and growth of onion (Allium cepa L.) seedlings was investigated.
Filho, Lauro Xavier +2 more
core
Taxonomy and diversity of Marcgraviaceae, north of the São Francisco river, northeast Brazil
Nordic Journal of Botany, EarlyView.This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we ...
Thales Carvalho +4 more
wiley +1 more source
Allelopathic effect of the Cladonia verticillaris lichen extracts and fumarprotocetraric acid on the early growth of germinated seedlings in Allium cepa L. [PDF]
, 1999 The allelopathic activity of the different type of Cladonia verticillaris lichen extracts and fumarprotocetraric acid on the early growth of A. cepa (IPA 6) germinated seedlings depends on their chemical composition and concentration, respectively.
Vicente, Carlos +2 more
core
Oikos, EarlyView.Seasonal environmental cycles affect plant–pollinator interactions by altering plant phenology. Periods of low resource availability can filter pollinators and reduce the complexity of interaction networks, but the extent to which the functional morphology of pollinators influences such filtering remains unclear.
Ugo M. Diniz +3 more
wiley +1 more source
O FIM DO CAFÉ E AS MUDANÇAS NA PEQUENA PRODUÇÃO AGRÍCOLA: O CASO DO ESTREITO DO NORTE
Cadernos de Estudos Sociais, 1995 Com este trabalho, procura-se analisar as alterações sofridas pela produção agrícola da localidade de Estreito do Norte (Bonito-PE), após a derrocada da lavoura cafeeira. Tal fato provocou não só uma substancial transformação na paisagem, como também foi
Antônio Luiz Ferreira
doaj
Revista de fontes, 2019 O presente artigo apresenta a transcrição de uma ata notarial lavrada em Amsterdã no ano de 1604. Tal documento apresenta detalhes sobre o comércio, legal ou não, de pau-brasil em Pernambuco na primeira década do século dezassete.
openaire +2 more sources
People and Nature, EarlyView.Abstract Fisheries constitute one of the major benefits that oceans provide for people. Yet anthropogenic pressures and global changes are disrupting coastal systems, eroding marine biodiversity and threatening the food security of traditional populations.
Fabricio C. Albuquerque +4 more
wiley +1 more source
, 2016 This species ispreviously known from the Brazilian states of Ceará, Goiás, Maranhão,Mato Grosso do Sul, Minas Gerais, Pará, Paraná, Pernambuco,São Paulo, and Tocantins (Hoge and Federsoni 1975.Mem. Inst. Butantan 38:137-146; Cunha and Nascimento 1993.Bol.
de Araujo Vieira, Katyuscia +2 more
core
Balancing tracks and trees: Assessing railroad impact on Brazilian biodiversity
PLANTS, PEOPLE, PLANET, EarlyView.The Brazilian West–East Integration Railway (FIOL) aims to boost the national economy by improving commodity transport; however, it crosses three of Brazil's most biodiverse and fragile regions: the Caatinga, Cerrado and Atlantic Forest. Using digitised plant records and land‐use analyses, our study reveals significant vegetation loss within the ...
Ana Luiza Silva Rocha +3 more
wiley +1 more source