Results 51 to 60 of about 11,906 (244)

Altitudinal distribution and species richness of herbaceous plants in campos rupestres of the Southern Espinhaço Range, Minas Gerais, Brazil

open access: yesRodriguésia
The variation in the species richness of herbaceous plants along an altitudinal gradient was analyzed in the Serra do Ouro Branco and Serra do Ribeiro, in the townships of Ouro Branco and Ouro Preto, respectively. Plant similarity between both serras was
Rafael Augusto Xavier Borges   +2 more
doaj   +1 more source

Pirâmide de vegetação para representação fitogeográfica no parque municipal Três Irmãos, Terra Rica-PR

open access: yesGeopauta, 2021
O Morro Três Irmãos, em Terra Rica-PR, localiza-se no noroeste do Paraná, sob domínio da Mata Atlântica do interior, sendo a principal fisionomia a Floresta Estacional Semidecidual, com a presença de elementos florísticos típicos de enclave vegetacional.
Elissandro Voigt Beier   +1 more
doaj   +1 more source

La biogeografia insulare rivisitata [PDF]

open access: yesBiogeographia – The Journal of Integrative Biogeography, 1987
BIOGEOGRAPHIA - vol. XI - 1985 Principi e metodi del/'anaIisi biogeograf/‘ca La biogeografia insulare rivisitata A. MINELLI Dipartimerzto dz’ Biologzkz dell’Umz2ersz'tai di Padova La pubblicazione del volume di R.H. MacArthur e E.O. Wilson: T/9e theory of islcmd Zziogeogmp/9y (1967) e stata il punto di partenza di lunghe e talora violente ...
openaire   +3 more sources

Experimental Disentangling of the Effects of Initial Population Size and Resource Availability on Weevil Population Dynamics

open access: yesEntomologia Experimentalis et Applicata, Volume 173, Issue 12, Page 1278-1284, December 2025.
Initial population size and resource availability are key factors regulating population dynamics, with growth rates typically declining as populations increase but rising with greater resources. In maize weevils, however, we found an unexpected negative effect of resource availability on intrinsic growth rates, contrary to conventional expectations. We
Gessica Miranda Barros   +24 more
wiley   +1 more source

Ciência e nação: romantismo e história natural na obra de E. J. da Silva Maia Science and nation: romanticism and natural history in the works of E. J. da Silva Maia

open access: yesHistória, Ciências, Saúde: Manguinhos, 1998
A obra do médico e naturalista Emílio Joaquim da Silva Maia (1808-59) é compreendida como um projeto científico de descoberta do Brasil e de seus habitantes.
Lorelai Kury
doaj   +1 more source

Riqueza de espécies e endemismo em ilhas oceânicas do atlântico: Testando premissas de biogeografia de ilhas [PDF]

open access: yes, 2011
TCC(graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Biológicas. Biologia.Grande parte dos estudos testando padrões biogeográficos utiliza organismos terrestres como modelo, todavia, os padrões identificados podem não ser ...
Hachich, Nayara Fernanda
core  

River Barriers and Spatial Constraints: Unveiling the Factors Shaping Species Distribution in the Amazonian Rainforest

open access: yesJournal of Biogeography, Volume 52, Issue 12, December 2025.
ABSTRACT Aim We aimed to quantify the relative contributions of geographic distance, environmental variation, and riverine barriers to shaping species distributions across the Amazon forest. Location Amazon forest, Brazil. Time Period Present. Major Taxa Studied Class Arachnida; Order: Opiliones (harvestmen).
Cristian de Sales Dambros   +3 more
wiley   +1 more source

First Maltese record of Stephanopachys quadricollis (Marseul, 1879) (Coleoptera, Bostrichidae) [PDF]

open access: yes, 2016
Three specimens of Stephanopachys quadricollis (Marseul, 1878) were recently found in Malta in UV light traps and represent the first record of this species for this country. Although S.
Mifsud, David, Nardi, Gianluca
core   +1 more source

Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) Filogenia molecular, cromossomos e dispersão em akodontinos do Brasil (Rodentia, Sigmodontinae)

open access: yesIheringia: Série Zoologia, 2009
A new molecular phylogeny for akodontine rodents from Brazil was proposed. The phylogenetic tree was enriched with the area of occurrence and with information on the karyotype of the samples. Based on this enriched tree, and with a described methodology,
Maria Claudene Barros   +3 more
doaj   +1 more source

The Algarve climatophilous vegetation series – Portugal: a base document to the planning, management and nature conservation Les séries de végètation climatophiles de l’Algarve - Portugal: un document de base pour la planification, gestion et conservation de la nature [PDF]

open access: yes, 2012
This work was developed as part of PhD research devoted to the flora and vegetation of the Caldeirão and Monchique mountains that aims to identify the vegetation climatophilous series and use them as an environmental diagnosis of Algarve administrative ...
Cano-Ortiz, Ana   +4 more
core   +1 more source

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