Results 61 to 70 of about 20,376 (259)

Morphology of Guard Hairs in Amazonian Marsupials: Intergeneric Variation, Habitat and Habit Association in a Phylogenetic Framework of the Order Didelphimorphia

open access: yesActa Zoologica, EarlyView.
ABSTRACT The cuticle and medulla of guard hairs exhibit distinct morphological patterns among mammalian species. To investigate this variability in marsupials from the Brazilian Amazon, we analysed guard hairs from nine Didelphimorphia species and incorporated data from an additional 25 didelphid species.
Matheus M. Bitencourt   +4 more
wiley   +1 more source

Detecção de Mudança da Vegetação de Caatinga (Change Detection of Vegetation Caatinga)

open access: yesRevista Brasileira de Geografia Física, 2013
A caatinga é um bioma de grande diversidade que cobre a maior parte da área de clima semiárido brasileiro. Várias técnicas já foram utilizadas com o objetivo de determinar quantitativamente e qualitativamente o estado da vegetação a partir de imagens de satélite e índices de vegetação foram desenvolvidos para auxiliar no mapeamento da vegetação e ...
Paulo Roberto Megna Francisco   +3 more
openaire   +2 more sources

Identifying hotspots of faunal data deficiency to direct urgent research and monitoring

open access: yesConservation Biology, EarlyView.
Abstract Data deficiency is a substantial challenge for extinction risk assessments because incomplete data means we cannot accurately identify priority protected areas for conservation. Here, we use the International Union for Conservation of Nature (IUCN) distributions of amphibians, sharks and rays, fish, mammals, birds, and reptiles to identify ...
Matt W. Hayward   +4 more
wiley   +1 more source

Caracterização e atributos da vegetação herbácea em um fragmento de Caatinga no Estado de Sergipe, Brasil

open access: yesHoehnea
RESUMO Espera-se que variações nos fatores ambientais sejam responsáveis pela diversificação das plantas herbáceas na Caatinga. Nesta pesquisa, objetivou-se caracterizar a vegetação herbácea quanto à composição, similaridade e estrutura, em um fragmento ...
Eduardo Vinícius da Silva Oliveira   +2 more
doaj   +1 more source

O QUE é a Caatinga e por que conservá-la? [PDF]

open access: yes, 2017
O que é a Caatinga. Características. As plantas. Os animais. É preciso preservar a Caatinga. A utilidade das plantas. Medicinais. Fontes de alimento e abrigo para abelhas. Forrageiras. Frutíferas. Fontes de óleo, cera e fibras. Madeireiras e energéticas.

core  

Conservation priorities for Neotropical water striders (Hemiptera: Heteroptera: Gerridae) under climate change

open access: yesConservation Science and Practice, EarlyView.
Hydrologic changes driven by climate change are affecting aquatic biota in the Neotropical Region, with significant impacts on water striders. Species distribution models predict an increase in conservation importance for the northern Andes and coastal areas of eastern South America, while central South America shows a decline. The observed changes are
Leticia Nery   +2 more
wiley   +1 more source

Ecological and functional effects of habitat conversion and seasons on fruit‐feeding butterfly assemblages in tropical dry forests Efeitos ecológicos e funcionais da conversão do habitat e da sazonalidade sobre assembleias de borboletas frugívoras em florestas tropicais secas

open access: yesEcological Entomology, EarlyView.
Land‐use change and seasonality shape the taxonomic, functional and phylogenetic diversity of fruit‐feeding butterflies in tropical dry forests. Pastures reduce phylogenetic diversity and increase wing fluctuating asymmetry, while taxonomic and functional diversity is greater in the wet season than in the dry season.
João Rafael S. Macêdo   +8 more
wiley   +1 more source

Caatinga phytosociology in the Grota do Angico natural monument, Sergipe, Brazil [PDF]

open access: yes, 2013
The Caatinga is a vegetation that occurs exclusively in Brazil, typically in the Northeastern region and studies on the floristic composition and phytosociological are prerequisites for understanding the behavior, distribution and structure of the ...
Mello, Anabel Aparecida de   +3 more
core  

Anaexserticlava caatingae, a new conidial fungus from the semi-arid Caatinga biome of Brazil

open access: yesMycotaxon, 2015
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Tasciano dos Santos Santa Izabel   +5 more
openaire   +1 more source

She Doesn't Whisper: Female‐Prominent Stridulation Shaped by Morphology in a Buthid Scorpion and Insights on Its Function

open access: yesEthology, EarlyView.
Sexual dimorphism and stress‐induced stridulatory responses in Jaguajir rochae (Borelli, 1910). Females exhibited greater absolute pectinal size and higher sound pressure levels, whereas males showed higher pectinal allometric ratios relative to body size, lower sound frequencies, and shorter delta times.
Welton Dionisio‐da‐Silva   +4 more
wiley   +1 more source

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