Results 81 to 90 of about 138,677 (197)

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

open access: yesIbis, EarlyView.
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

Paleoclimatología y cronología del Würm reciente: un intento de síntesis

open access: yesZephyrus, 2009
RESUMEN: Las oscilaciones climáticas observadas en los núcleos polares (GRIP, GISP2) y la escala temporal que forman, pueden servirnos como marco de referencia general de las variaciones climáticas representadas en los yacimientos arqueológicos. De igual
Ángel RIVERA ARRIZABALAGA
doaj  

COMPORTAMENTO DE POEDEIRAS EM FUNÇÃO DE DIFERENTES FONTES DE ILUMINAÇÃO

open access: yesRevista Brasileira de Engenharia de Biossistemas, 2012
Tanto o comprimento das ondas quanto a intensidade luminosa influenciam a fisiologia das aves, interferindo no bem-estar animal e na produtividade. Esta pesquisa teve como objetivo monitorar o comportamento de poedeiras criadas em ambiente enriquecido ...
Gabriela Fagundes DA SILVA   +2 more
doaj   +1 more source

Does any fish scale of a fish have the same number of marks? A case study for two Mugilidae species

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study evaluates the difference in growth marks in scales from nine body areas of two Mugilidae species from the Gulf of Mexico: Mugil curema and Mugil cephalus. It addresses whether the different body areas show more (or fewer) marks, and which area(s) would be more useful in fish biology studies relying on mark analysis.
Ebenecer Guerra   +6 more
wiley   +1 more source

Seeing herbaria in a new light: leaf reflectance spectroscopy unlocks trait and classification modeling in plant biodiversity collections

open access: yesNew Phytologist, EarlyView.
Summary Reflectance spectroscopy is a rapid method for estimating traits and discriminating species. Spectral libraries from herbarium specimens represent an untapped resource for generating broad phenomic datasets across space, time, and taxa. We conducted a proof‐of‐concept study using trait data and spectra from herbarium specimens up to 179 yr old,
Dawson M. White   +6 more
wiley   +1 more source

Sediment microbial communities in long‐term wetland restorations within the Prairie Pothole Region of the United States

open access: yesRestoration Ecology, EarlyView.
Hydrologic wetland restoration in the Prairie Pothole Region is a common management practice to facilitate habitat and ecosystem recovery after degradation or drainage. Little is known about the recovery of sediment microbial communities relative to other organisms, such as vegetation, fish, and macroinvertebrates, even though they are critical for ...
Christine M. Cornish   +2 more
wiley   +1 more source

Risco de fadiga em ambiente térmico frio: caso de uma indústria de peixe congelado

open access: yesTerritorium: Revista Portuguesa de riscos, prevenção e segurança, 2017
Em diferentes indústrias caraterizadas com ambientes quentes, confortáveis e/ou frios, os trabalhadores devem usar um vestuário em função da atividade desenvolvida.
Mário Talaia   +2 more
doaj  

A CONSTRUÇÃO DE UM MUSEU IMAGINÁRIO, OU A CRIAÇÃO DE UM REPOSITÓRIO DE OBJETOS DO CULTO CATÓLICO [PDF]

open access: yes, 2016
RESUMO Esta comunicação integra-se numa investigação no âmbito das humanidades digitais, uma transdisciplina recente que procura adequar os métodos das Ciências Humanas às novas tecnologias.
Guerreiro, Dália
core   +2 more sources

As above, so below: A perspective into the application of land‐forest monitoring methods for the assessment of marine animal forests

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 4, Page 1124-1142, April 2026.
Abstract Marine animal forests (MAFs) are benthic ecosystems dominated by vertically structuring filter‐ and suspension‐feeders. As terrestrial forests, they are considered biodiversity hotspots, forming canopies, serving as a refuge, nursery, reproduction and feeding shelters for many species.
Torcuato Pulido Mantas   +9 more
wiley   +1 more source

Massive perturbers and the efficient merger of binary massive black holes

open access: yes, 2007
We show that dynamical relaxation in the aftermath of a galactic merger and the ensuing formation and decay of a binary massive black hole (MBH), are dominated by massive perturbers (MPs) such as giant molecular clouds or clusters.
Bailey M. E.   +14 more
core   +1 more source

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