Results 51 to 60 of about 274 (128)

Habitat differences in seed‐dispersing vertebrates indicate dispersal limitation in tropical bracken‐dominated deforested areas

open access: yesBiotropica, Volume 56, Issue 3, May 2024.
Forest regeneration in tropical bracken‐dominated deforested areas is mainly hindered by dispersal limitation. We found differences in species composition of seed‐dispersing birds and bats between the forest and bracken‐dominated areas, which could be one of the main causes of dispersal limitation in forest regeneration in tropical bracken‐dominated ...
Silvia C. Gallegos   +10 more
wiley   +1 more source

Systematic reduction in seed rain of large‐seeded and endozoochorous species in pastures compared to forests along a tropical elevational gradient

open access: yesApplied Vegetation Science, Volume 27, Issue 2, April/June 2024.
By analyzing variation in seed rain among old‐growth montane forests and livestock pastures along a 2,000 m elevational gradient in the tropical Andes of southern Ecuador, this study reveals that large seeds and endozoochorous species are less prevalent in seed rain from pastures compared to seed rain from forests at the same elevation.
Diana Carolina Acosta‐Rojas   +5 more
wiley   +1 more source

OUTBREAK OF ACUTE POISONING BY Pteridium arachnoideum (Kaulf.) IN CATTLE

open access: yesRevista Brasileira de Medicina Veterinaria, 2010
Pteridium arachnoideum é uma das mais importantes plantas tóxicas conhecidas no mundo. Sob condições naturais provoca diferentes quadros clínicopatológicos em diversas espécies animais. A intoxicação aguda por P.arachnoideum é caracterizada por uma síndrome hemorrágica, que causa morte em aproximadamente 12 a 72 horas. Na Serra da Mantiqueira, diversos
Santos, Bruno José Martini   +5 more
openaire   +2 more sources

Recognition of two morpho-types in eastern South American brackens (Pteridium—Dennstaedtiaceae—Polypodiopsida)

open access: yes, 2014
In this work we propose the recognition of two well defined morpho-types of Pteridium from eastern South America: P. arachnoideum subsp. arachnoideum s. str., wide-spread from north-eastern Brazil southwards to north-eastern Argentina and Uruguay, and P.
De Moraes, Pedro L. R.   +6 more
core   +1 more source

BANCO DE SEMENTES DO SOLO PARA USO NA RECUPERAÇÃO DE MATAS CILIARES DEGRADADAS NA REGIÃO NOROESTE FLUMINENSE

open access: yesCiência Florestal, 2018
The objective of this study was to characterize the germination and species diversity of the seed bank of a fragment of riparian forest located at the Experimental Station of PESAGRO-RJ, in Itaocara city, RJ state, and evaluate its potential use in ...
Tiago José Freitas de Oliveira   +4 more
doaj   +1 more source

Taxonomic Status of Diploid Southern Hemisphere Brackens (Pteridium: Dennstaedtiaceae)

open access: yes, 2012
Diploid bracken ferns separate morphologically, genetically and reproductively into a predominantly northern hemisphere clade comprising 11 subspecies placed in Pteridium aquilinum (L.) Kuhn and a predominantly southern hemisphere Austral/South American ...
Thomson, John, Thomson, John Alexander
core   +1 more source

Achados clínico-patológicos e métodos de controle da intoxicação por Pteridium (aquilinum) arachnoideum [PDF]

open access: yes, 2015
A infestação de pastagens por populações de Pteridium arachnoideum é um problema que afeta a pecuária, em diversas partes do mundo. Os efeitos deletérios da infestação pela planta sobre a bovinocultura são manifestados na forma de mortalidades e de ...
Boabaid, Fabiana M.
core  

Enzootic hematuria in cattle from Northeastern Brazil

open access: yesBrazilian Journal of Veterinary Pathology, 2016
Two outbreaks (A and B) of bovine enzootic hematuria in Bahia in the period 2012-2013 were described. In the outbreak A, a cow was necropsied and 27 cattle were slaughtered in a slaughterhouse, and the second outbreak two cattle were necropsied.
Suélen D. S. Reis   +6 more
doaj   +1 more source

Intoxicação crônica por Pteridium arachnoideum em bovinos no nordeste do estado do Rio Grande do Sul, Brasil

open access: yesRevista Brasileira de Ciência Veterinária, 2019
A planta Pteridium aquilinum, popularmente conhecida como samambaia, e comumente encontrada em solos acidos, arenosos e de baixa fertilidade. Os bovinos normalmente sao relutantes em ingerir a samambaia. A intoxicacao ocorre quando os animais passam por privacao nutricional, ingestao acidental de feno contaminado pela samambaia ou em animais que ...
Gilson Antonio Pessoa   +8 more
openaire   +1 more source

Integração de técnicas de manejo para a restauração de restinga superdominada por Pteridium arachnoideum (Dennstaedtiaceae)

open access: yes, 2022
Seminário de Iniciação Científica e Tecnológica. Universidade Federal de Santa Catarina. Centro de Ciências Biológicas. Departamento de Ecologia e Zoologia.Espécies superdominantes são espécies nativas cujos tamanhos populacionais aumentam ...
Silva, Gabriela Moraes
core  

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