Results 21 to 30 of about 2,922 (118)

Multimodal synchrotron X-ray fluorescence imaging reveals elemental distribution in seeds and seedlings of the Zn–Cd–Ni hyperaccumulator Noccaea caerulescens

open access: yesMetallomics, 2022
The molecular biology and genetics of the Ni–Cd–Zn hyperaccumulator Noccaea caerulescens has been extensively studied, but no information is yet available on Ni and Zn redistribution and mobilization during seed germination.
A. van der Ent   +7 more
semanticscholar   +1 more source

Sporophila caerulescens subsp. caerulescens Establecimiento La

open access: yes, 2017
Published as part of Pagano, Luis G. & Salvador, Sergio A., 2017, Datos De Pesos De Aves Argentinas. Parte 4, pp.
Pagano, Luis G., Salvador, Sergio A.
openaire   +2 more sources

Historical anthropogenic stressors affect bird ecology and feather development in neotropical forests

open access: yesOikos, Volume 2025, Issue 10, October 2025.
Fragmentation and habitat loss driven by agricultural expansion have significantly affected bird ecology. Additionally, the growing use of agrochemicals impacts ecosystems and avian communities. Tools such as isotopic analysis provide reliable proxies for assessing organisms' habitat use and diet, and can also reflect environmental alterations, such as
Ana B. Navarro   +7 more
wiley   +1 more source

Changes in land cover drove the recent range expansion of a tropical farmland bird

open access: yesOikos, Volume 2025, Issue 9, September 2025.
Several bird species associated with agricultural landscapes in the Palearctic and in the Nearctic (i.e. farmland birds) have been experiencing severe population declines since the 1970s, mainly due to habitat loss driven by agricultural intensification.
Luana Jéssica Ferreira   +4 more
wiley   +1 more source

New Isospora and Host Species in Brazilian Passerines

open access: yesBrazilian Journal of Poultry Science
Normal passerines (n=216) were evaluated for oocysts of Isospora in feces at the Triage Center for Wild Animals (CETAS, IBAMA, Belo Horizonte; August 21 to September 21, 2012).
C Barreto   +8 more
doaj   +1 more source

Molt patterns, aging, and sexing criteria for ten temperate Neotropic bird species: an important resource for bird monitoring programs

open access: yesJournal of Field Ornithology
Within avian biology, molt represents a crucial and energetically demanding process that involves the periodic replacement of plumage. A comprehensive understanding of molt patterns enables bird monitoring programs and conservation efforts.
Martín E. Pérez, Pablo G. Brandolin
doaj   +1 more source

Identification of Poxvirus Under Transmission Electron Microscopy During Outbreak Period in Wild Birds, in São Paulo, Brazil

open access: yes, 2009
Avianpox es una enfermedad altamente contagiosa que infecta tanto aves comerciales como aves silvestres, causando grandes danos a lo ganaderia y a la crianza.
M. Catroxo   +6 more
semanticscholar   +1 more source

Confirmación del primer registro de Sporophila Luctuosa (Passeriformes, Thraupidae) “Monjita de Salpo” para los andes occidentales de la región la Libertad, Perú

open access: yesBiologist
Se confirma el primer reporte de Sporophila luctuosa (Lafresnaye, 1843) (Passeriformes, Thraupidae) “monjita de Salpo” para las vertientes occidentales de los Andes Peruanos en la región La Libertad. La especie, se distribuye, principalmente en los Andes
Segundo Leiva-González   +1 more
semanticscholar   +1 more source

Notas sobre la biología de algunos Passeriformes del Noroeste Argentino, I

open access: yesActa Zoológica Lilloana, 1987
Observaciones nidológicas sobre algunas aves tiraninas, parulinas y emberizinas: Se describen nidos y huevos de Stigmatura budytoides, Parula pitiayumi y Sporophila caerulescens.
Estela A. Alabarce
doaj  

First records of Sporophila caerulescens from Colombia; a probable long distance migrant from southern South America

open access: yes, 1979
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Remsen, J. V., Hunn, E S
openaire   +1 more source

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