Results 21 to 30 of about 3,193 (134)

Model parameterization to simulate and compare the PAR absorption potential of two competing plant species. [PDF]

open access: yesInt J Biometeorol, 2010
Mountain pastures dominated by the pasture grass Setaria sphacelata in the Andes of southern Ecuador are heavily infested by southern bracken (Pteridium arachnoideum), a major problem for pasture management.
Bendix J   +6 more
europepmc   +3 more sources

Who will win where and why? An ecophysiological dissection of the competition between a tropical pasture grass and the invasive weed Bracken over an elevation range of 1000 m in the tropical Andes. [PDF]

open access: yesPLoS ONE, 2018
In tropical agriculture, the vigorously growing Bracken fern causes severe problems by invading pastures and out-competing the common pasture grasses. Due to infestation by that weed, pastures are abandoned after a few years, and as a fatal consequence ...
Johannes Knuesting   +6 more
doaj   +2 more sources

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.
Gilson Antônio Pessoa   +8 more
semanticscholar   +2 more sources

SURTO DE INTOXICAÇÃO AGUDA POR Pteridium arachnoideum (Kaulf.) EM BOVINOS*

open access: yesBrazilian Journal of Veterinary Medicine, 2010
Pteridium arachnoideum é uma das mais importantes plantas tóxicas conhecidas no mundo. Sob condições naturais provoca diferentes quadros clínicopatológicos em diversas espécies animais.
Bruno José Martini Santos   +5 more
doaj   +1 more source

Interference of Pteridium arachnoideum (Kaulf.) Maxon. (Dennstaedtiaceae) on the establishment of rainforest trees Interferência de Pteridium arachnoideum (Kaulf.) Maxon. (Dennstaedtiaceae) no estabelecimento de árvores tropicais

open access: yesBrazilian Journal of Biology, 2010
In order to identify the effect of P. arachnoideum, we studied 11 native tree species commonly used in reforestation projects. Bioassays were conducted in laboratory to evaluate the effect of bracken leachate on the germination and morphology of ...
DM. Silva Matos, TA. Belinato
doaj   +1 more source

Pteridium aquilinum: o que sabemos e o que ainda falta saber [PDF]

open access: yesBioscience Journal, 2010
A samambaia Pteridium aquilinum encontra-se amplamente distribuída no planeta, sendo considerada um problema ambiental, além de representar perigo para a saúde tanto de animais quanto da espécie humana.
Natália Satchiko Hojo-Souza   +2 more
doaj   +4 more sources

Alterações anátomo-histopatológicas em ratos submetidos à dieta com extrato de broto de samambaia (Pteridium aquilinum var. arachnoideum) de dois municípios do estado do Paraná Macroscopic and microscopic changes in rats fed on a bracken fern diet (Pteridium aquilinum var. arachnoideum) from different regions of Parana State, Brazil [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2005
The carcinogenicity of bracken fern harvest from two regions of Paraná State to induce hematury in rats was studied. In order to do that, 33 Wistar rats were divided in three groups.
G.D. Cruz   +3 more
doaj   +5 more sources

Formal recognition of six subordinate taxa within the South American bracken fern, Pteridium esculentum (P. esculentum subsp. arachnoideum s.l.-Dennstaedtiaceae), based on morphology and geography.

open access: yesPhytotaxa, 2018
Based on the morphological study of ca. 470 specimens and geographical studies, we here propose the recognition of six morphotypes within the South American Pteridium esculentum (= P. arachnoideum s.l. , or P. aquilinum var.
P. Schwartsburd, A. Yañez, J. Prado
semanticscholar   +3 more sources

Weak allelopathic effects of bracken fern (Pteridium esculentum subsp. arachnoideum) on early life stages of native tree species in a Neotropical montane forest

open access: yesPlant Ecology
The allelopathic effect of Pteridium ferns (hereafter bracken) is considered an important factor hindering forest recovery. We examined the effects of bracken allelopathy on seed germination, seedling emergence, survival, and relative growth rate (RGR ...
Yamil Maidana-Tuco   +3 more
semanticscholar   +2 more sources

Leaf litter arthropod responses to tropical forest restoration. [PDF]

open access: yesEcol Evol, 2016
Soil and litter arthropods represent a large proportion of tropical biodiversity and perform important ecosystem functions, but little is known about the efficacy of different tropical forest restoration strategies in facilitating their recovery in degraded habitats.
Cole RJ   +4 more
europepmc   +2 more sources

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