Results 51 to 60 of about 25,751 (182)

Abundância, Composição e Diversidade de Arctiinae (Lepidoptera, Arctiidae) em um fragmento de floresta na Amazônia Oriental em Altamira, PA, Brasil Abundance, Composition and Diversity of Arctiinae (Lepidoptera, Arctiidae) in a forest fragment in the Eastern Amazon in Altamira, PA, Brazil

open access: yesActa Amazonica, 2012
Este estudo avaliou a fauna de Arctiinae em um fragmento de floresta primária em Altamira, Pará, na Amazônia Oriental brasileira. As mariposas foram amostradas durante dois anos (de agosto de 2007 a julho de 2009), com auxílio de armadilha luminosa ...
José Augusto Teston   +2 more
doaj   +1 more source

Effects of Landscape Characteristics on Abundance of Giant Anteaters in Intensively Farmed Areas

open access: yesBiotropica, Volume 57, Issue 6, November 2025.
In this study, we analyzed the abundance of giant anteaters in 55 landscapes within a 34,000 km2 region that has undergone significant transformation due to intensive agricultural practices, particularly the cultivation of sugarcane. In each landscape, we used three camera traps to record the presence of this species. Our occupancy models revealed that
Samia C. dos Reis   +2 more
wiley   +1 more source

Fitogeografia de Aldama (Asteraceae, Heliantheae) na América do Sul

open access: yesRodriguésia
Resumo Apresentamos um estudo fitogeográfico sobre Aldama (Asteraceae: Heliantheae) baseado em extenso trabalho de campo, dados da literatura e de herbários.
Mara Angelina Galvão Magenta   +2 more
doaj   +1 more source

Two new species of Phalangopsis Serville, 1831 (Orthoptera: Grylloidea: Phalangopsidae) from Brazilian Amazon Forest

open access: yesAnais da Academia Brasileira de Ciências, 2008
We describe here two new species of the genus Phalangopsis Serville, 1831 from the Brazilian Amazon Forest. The male genitalia and the female copulatory papilla were described, and a combination of diagnostic characteristics was given to separate both ...
Carina M. Mews, Carlos F. Sperber
doaj   +1 more source

Surviving in the Amazon Arc of Deforestation: Richness and Defaunation of Mammals in Priority‐Protected Areas of the Brazilian Midwest

open access: yesAustral Ecology, Volume 50, Issue 7, July 2025.
We found rich and compositionally different assemblages of medium and large‐sized mammals in protected areas on the southern edge of Amazon. However, both have high rates of mammal defaunation. We argue that anthropogenic threats in the Amazon Arc of Deforestation are eroding large ungulate populations, especially peccaries.
Mateus Melo‐Dias   +6 more
wiley   +1 more source

Diversidade de Arctiinae (Lepidoptera, Arctiidae) em área alterada em Altamira, Amazônia Oriental, Pará, Brasil Diversity of Arctiinae (Lepidoptera, Arctiidae) in disturbed area at Altamira, Eastern Amazon, Pará, Brazil

open access: yesActa Amazonica, 2010
Este trabalho avaliou a fauna de Arctiinae em Altamira, Pará, numa área com forte ação antrópica, por meio de armadilhas luminosas, com capturas de duas noites a cada fase de lua nova por mês, no período de dezembro de 2007 a novembro de 2008.
José Augusto Teston   +1 more
doaj   +1 more source

Temporal Dynamics of a Neotropical Plant‐Hummingbird Interaction Network

open access: yesAustral Ecology, Volume 50, Issue 7, July 2025.
Using an unprecedented sampling effort we evaluated network structure and dynamics of plant‐hummingbird interactions over 1 year in the Brazilian hyperdiverse Campos Rupestres. Network structure presented remarkable temporal change, showing that tropical communities can also be strongly influenced by climate.
Steffani N. P. Queiroz   +7 more
wiley   +1 more source

Novidades em Vanilla Mill. (Orchidaceae) para a borda sul-amazônica, Estado de Mato Grosso, Brasil

open access: yesHoehnea, 2020
RESUMO Durante o estudo do gênero Vanilla Mill. do norte do Estado de Mato Grosso, foram coletados espécimes de Vanilla bahiana, V. cribbiana e V. cristatocallosa, sendo novos registros de distribuição geográfica para este Estado.
Mathias Erich Engels   +2 more
doaj   +1 more source

A bryophyte checklist of the ecological reserve of Gurjaú, Pernambuco, Brazil [PDF]

open access: yes, 2005
A bryophyte checklist of the Ecological Reserve of Gurjaú (08º10’00'’-08º15’00"S; 35º02’30"- 35º05’00"W), a remnant of the Atlantic Forest in the State of Pernambuco, has been compiled.
Germano, Shirley Rangel   +1 more
core  

A new species of Ptiloglossa from Mexico, with new records of Ptiloglossa cyaniventris from Panama and Costa Rica (Hymenoptera: Colletidae) [PDF]

open access: yes, 2014
A new bee species of the genus Ptiloglossa Smith (Colletidae: Diphaglossinae: Caupolicanini) is described and figured from Jalisco, Mexico, while new records are provided for Ptiloglossa cyaniventris Friese from Panama and a single locality in Costa Rica.
Ayala, Ricardo, Engel, Michael S.
core   +2 more sources

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