Results 81 to 90 of about 8,535,720 (219)

Defining River Regional Landscape Classifications for Implementing Spatially Extensive Brazilian Stream Assessments

open access: yesJournal of Biogeography, Volume 52, Issue 12, December 2025.
ABSTRACT Aim To determine whether regional classification—river typology or ecoregion—better captures the ecological variability of tropical stream ecosystems for biomonitoring purposes. Location Three hundred and forty‐eight streams located in the São Francisco, Mata Atlântica and Paraná hydrologic units, Minas Gerais state, southeastern Brazil.
Pedro Fialho Cordeiro   +6 more
wiley   +1 more source

Diversidade na produção de milho na região central de Minas Gerais. [PDF]

open access: yes, 2015
O trabalho pretende contribuir para o necessário processo reflexivo sobre a complexidade do sistema de produção de milho na região central de Minas Gerais, para que sejam levadas em conta suas potencialidades em atender as demandas do produtor e do ...
ALBERNAZ, W. M.   +5 more
core   +1 more source

Beyond Deception: What Else Do Flower Wasps (Hymenoptera: Thynnidae: Thynninae) Do in Flowers Worldwide?

open access: yesJournal of Applied Entomology, Volume 149, Issue 9, Page 1351-1363, November 2025.
ABSTRACT Wasps, although less recognised as good pollinators, also feed on nectar and pollinate flowers. Specialised pollination systems, such as orchids that mimic the pheromones of female wasps to attract males, are complex and specific. This interaction occurs with some Thyninnae wasps that also visit flowers to obtain nectar and perform other ...
Leidy Kelly Guimarães Cunha   +4 more
wiley   +1 more source

New species, additions and a key to the Brazilian species of the Geminata clade of Solanum L. (Solanaceae) in Brazil [PDF]

open access: yes, 2015
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Giacomin, LL, Knapp, S, Stehmann, JR
core   +3 more sources

Fisionomia e composição da vegetação florestal na Serra do Cipó, MG, Brasil Physiognomy and composition of the forest vegetation in the Serra do Cipó, MG, Brazil

open access: yesActa Botânica Brasílica, 2011
A flora da Serra do Cipó tem sido extensamente pesquisada, especialmente a partir do início do projeto "Flora da Serra do Cipó", coordenada pelo Departamento de Botânica da Universidade de São Paulo. Entretanto, até o momento as coletas concentraram-se à
Matheus Fortes Santos   +2 more
doaj   +1 more source

First Report of a Histological Technique for Observing the Anatomy of the Epidermis of Melinis minutiflora

open access: yesMicroscopy Research and Technique, Volume 88, Issue 10, Page 2771-2782, October 2025.
A paired comparison revealed that the sodium hypochlorite method offers several advantages over other techniques, better preserving anatomical structures, which facilitates detailed analysis. ABSTRACT This article describes precise and unpublished data on leaf anatomy of Melinis minutiflora P. Beauv.
Josiane Costa Maciel   +9 more
wiley   +1 more source

Taking tadpole biology into the 21st century: a consensus paper from the First Tadpoles International Workshop [PDF]

open access: yes, 2015
Although tadpoles are common, frequently encountered vertebrates, their natural history is poorly known. Despite the fact that Brazil harbors the highest anuran diversity in the world, with almost a thousand known species (Segalla et  al., 2014), the ...
dos Anjos, Luciano A.   +11 more
core  

Distribution pattern in the rupiculous genus Orthophytum (Bromelioideae/Bromeliaceae) reveals high microendemicity in different types of rocky outcrops [PDF]

open access: yesAnais da Academia Brasileira de Ciências
This study aimed to recognize the biogeographic patterns, richness, and diversity levels of the Brazilian endemic genus Orthophytum and identify their biotic components through a parsimony analysis of endemicity (PAE), to better understand the ...
SWAMI L. COSTA   +4 more
doaj   +1 more source

Parques nacionais do Cerrado para além da conservação da biodiversidade : serviços ecossistêmicos culturais e riscos ambientais [PDF]

open access: yes, 2017
Dissertação (mestrado)—Universidade de Brasília, Faculdade UnB Planaltina, Programa de Pós-Graduação em Ciências Ambientais, 2017.As zonas de amortecimento no entorno de unidades de conservação podem minimizar os impactos antrópicos negativos e estimular
Rodrigues, Ariane de Almeida
core  

Pollen morphology of the Boraginaceae from Santa Catarina state (Southern Brazil), with comments on the taxonomy of the family [PDF]

open access: yes, 1996
The pollen morphology of 30 #Boraginaceae$ taxa native to the Santa Catarina State was investigated by both light and scanning electron microscopy. The species were classified into nine pollen types on the basis of aperture characteristics and surface ...
Barth, O.M.   +2 more
core   +1 more source

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