Results 51 to 60 of about 909 (112)

Spatial Scale Modulates the Effect of Habitat Amount on Diversity Patterns of Arachnid Assemblages Across Different Brazilian Ecosystems

open access: yesJournal of Biogeography, Volume 53, Issue 8, August 2026.
ABSTRACT Aim We evaluated how native vegetation cover influences the diversity of arachnid assemblages across multiple spatial scales in major Brazilian ecosystems. Location Brazil (Amazon and Atlantic rainforests, Cerrado savanna and Caatinga dry forest). Taxon Arachnida (Opiliones, Pseudoscorpiones and Scorpiones). Methods We sampled arachnids at 120
André F. A. Lira   +26 more
wiley   +1 more source

Scrutinizing the Wallacean shortfall: global gaps in snake occurrence data across space and environment

open access: yesEcography, Volume 2026, Issue 7, July 2026.
Occurrence records are fundamental for ecological and evolutionary research, providing key information on species' geographic ranges. However, these records are often taxonomically, spatially, and temporally biased, requiring caution in their use. Here, we analysed the spatial coverage of occurrence records for over 3500 snake species worldwide to ...
Lívia Frateles   +5 more
wiley   +1 more source

Climate Predicts Tree Dispersal Strategies Across Brazil's Ecosystems

open access: yesGlobal Ecology and Biogeography, Volume 35, Issue 7, July 2026.
ABSTRACT Aim We investigate the distribution of dispersal modes—endozoochory (via animal ingestion), synzoochory (via animal seed accumulation) and anemochory (via wind)—and seed mass of woody plants across Brazilian ecosystems, testing whether their relative abundance in local plant communities could be predicted by climate, edaphic factors and ...
Fernanda C. Souza   +126 more
wiley   +1 more source

VARIABILIDADE GENÉTICA EM DUAS POPULAÇÕES DE Cordia trichotoma

open access: yesRevista do Instituto Florestal, 1999
Populações de Cordia trichotoma, conhecida como louro-pardo, foram amostradas em Bauru (SP) e Tupi (SP), objetivando estimar a variabilidade genetica presente em populações naturais e a forma de distribuição desta variabilidade dentro da população, para
Lígia de Castro Ettori   +3 more
doaj   +1 more source

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

open access: yesIbis, Volume 168, Issue 3, Page 972-984, July 2026.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza   +4 more
wiley   +1 more source

Características de desenvolvimento inicial em teste de progênie de uma população de araucária na Flona de Três Barras-SC

open access: yesBiodiversidade Brasileira, 2012
A espécie Araucaria angustifolia (Bert.) O. Kuntze marca a fitofisionomia da Floresta Ombrófila Mista. Foi uma das espécies florestais nativas mais importantes no Brasil, em função da qualidade da madeira e de sua abundância nas áreas de ocorrência ...
Roberta Inácia Duarte   +4 more
doaj   +3 more sources

INTERAÇÃO GENÓTIPO X AMBIENTE NA CONSERVAÇÃO EX SITU DE Peltophorum dubium, EM DUAS REGIOES DO ESTADO DE SÃO PAULO

open access: yesRevista do Instituto Florestal, 1999
Estudou-se a partir de caracteres quantitativos o comportamento silvicultural, a interação genótipo x ambiente e a estrutura genética de duas populações de Peltophorum dubium, em várias idades de desenvolvimento das plantas.
Alexandre Magno Sebbenn   +3 more
doaj   +1 more source

Surrounded by invaders: marmoset conservation challenges in Brazilian Atlantic Forest fragments

open access: yesDiscover Conservation
Fragmented landscapes resulting from Atlantic Forest loss can facilitate biological invasions by certain species of the Callithrix genus. These primates demonstrate high invasion potential, spreading across Brazil, competing for resources, and even ...
Vanessa de Paula Guimarães-Lopes   +5 more
doaj   +1 more source

Divergência genética entre acessos de cajazinho (Spondias mombin L.) no norte do Espírito Santo

open access: yesRevista Ceres, 2014
O estudo da diversidade genética proporciona informações fundamentais, nos programas de melhoramento genético de plantas, em relação à caracterização, conservação e utilização dos recursos genéticos disponíveis.se, com este trabalho, avaliar a ...
Clemilton Alves da Silva   +6 more
doaj   +1 more source

Genetic Diversity of the Endangered Neotropical Cichlid Fish (Gymnogeophagus setequedas) in Brazil

open access: yesFrontiers in Genetics, 2018
Gymnogeophagus setequedas is a rare and rheophilic species of tribe Geophagini, considered endangered in Brazilian red lists. Its previously known geographical distribution range was the Paraná River basin, in Paraguay, and a tributary of the Itaipu ...
Lenice Souza-Shibatta   +8 more
doaj   +1 more source

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