Results 31 to 40 of about 3,245 (114)

Determinação de ptaquilosídeo no leite de vacas por CLAE-UV

Semina: Ciências Agrárias, 2019
Samambaias do gênero Pteridium são reconhecidas como responsáveis por casos de intoxicação em bovinos. As espécies de Pteridium comumente encontradas no Brasil são P. arachnoideum e P. caudatum.
Debora da Silva Freitas Ribeiro, Kelly Moura Keller, Marília Martins Melo, Benito Soto-Blanco   +3 more
doaj   +1 more source

Pteridófitas da região noroeste do Estado de São Paulo, Brasil: Dennstaedtiaceae Pteridophytes of the North-western region of the State of São Paulo, Brazil: Dennstaedtiaceae

Acta Botânica Brasílica, 1998
O trabalho faz parte de uma série de estudos sobre pteridófitas da região noroeste do Estado de São Paulo. Os representantes da família Dennstaedtiaceae são encontrados principalmente nas margens das matas ciliares e em barrancos úmidos e sombreados, com
Claudia R Siqueira, Paulo G Windisch
doaj   +1 more source

Monitoreo del crecimiento en un ensayo de restauración de matorral andino en la hoya de Loja, Ecuador.

Bosques Latitud Cero, 2023
La restauración ecológica procura restablecer las funciones ecosistémicas y gestionar los recursos naturales, por esta razón debe hacerse monitoreo para conocer la dinámica de las especies sembradas y de la vegetación que va formándose.
Leonardo González , Luis Muñoz, Vanessa Granda, Zhofre Aguirre   +3 more
doaj   +1 more source

Free Axial Lobes: An Important Diagnostic Character in Pteridium (Dennstaedtiaceae) [PDF]

, 2016
The overall form of the lamina in the bracken fern (Pteridium) is a fractal series in which blade, pinnae, pinnules and pinnulets represent a hierarchy of repeated units of decreasing size.
Thomson, John A., Thomson, John Alexander   +1 more
core   +1 more source

INTOXICAÇÃO POR PTERIDIUM ARACHNOIDEUM NO OESTE DE SANTA CATARINA - ESTUDO RETROSPECTIVO (2013-2017) [PDF]

, 2019
Samambaia (Pteridium arachnoideum) é uma das plantas tóxicas mais importantes na criação de bovinos de todo o Brasil. O objetivo desse trabalho foi descrever os diagnósticos de intoxicação por samambaia, em bovinos na região oeste de Santa Catarina ...
Gris, Anderson, Cechin, Renan A., Gomes, Teane M. A., Alves, Felipe D., Mendes, Ricardo E., Lima, Jéssica L. F. de, Werlang, Rafael A., Mingotti, Taisson R., Perosa, Fernanda F., Bavaresco, Lucas H., Casagrande, Renata A.   +10 more
core   +1 more source

Cianogênese em esporófitos de pteridófitas avaliada pelo teste do ácido pícrico Cyanogenesis in sporophytes of pteridophytes evidenced by the picric acid test

Acta Botânica Brasílica, 2005
Os glicosídeos cianogênicos são substâncias de defesa encontradas em alguns vegetais, capazes de liberar ácido cianídrico por meio de reações de hidrólise.
Marcelo Guerra Santos, Carlos Eduardo Martins Carvalho, Alphonse Kelecom, Maria Luiza Ribeiro da Costa Ribeiro, Camila Vaz Chagas de Freitas, Leonardo Moreira da Costa, Livia Viana de Godoy Fernandes   +6 more
doaj   +1 more source

Trait‐based species selection for restoration: A case study from tropical landscapes dominated by bracken

Journal of Applied Ecology, Volume 63, Issue 1, January 2026.
Our results can be used by stakeholders to select the species best suited for active restoration projects in bracken‐dominated areas throughout the tropical region. Furthermore, our trait‐based approach, which considers seedling performance in disturbed areas, can serve as a guide for species selection in restoration programmes in other disturbed ...
Silvia C. Gallegos, Cecilia L. López, Kazuya Naoki, Andrea Soliz, Alfredo F. Fuentes, Cesar Mayta, Leslie Cayola, J. Sebastian Tello, Isabell Hensen   +8 more
wiley   +1 more source

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

, 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. arachnoideum sensu Tryon, or P.
AGUSTINA YAÑEZ, Yañez, Agustina, JEFFERSON PRADO, Schwartsburd, Pedro Bond, Prado, Jefferson, PEDRO B. SCHWARTSBURD   +5 more
core   +1 more source

Non‐native invasive plants in tropical dry forests: a global review of presence, impacts, and management

Restoration Ecology, Volume 33, Issue 1, January 2025.
Tropical dry forests (TDF) are among the most‐threatened terrestrial ecosystems, experiencing ongoing conversion to agricultural fields, pasture, and human settlements. Human disturbances are often precursors to invasion of ecosystems by non‐native species, but research on invasion patterns in tropical ecosystems is sparse, and there is no ...
Nora G. Hardy, Sara E. Kuebbing, Marlyse C. Duguid, Mark S. Ashton, Karam C. Sheban, Seth E. Inman, Meredith P. Martin   +6 more
wiley   +1 more source

Conservation status of three rare endemic Phaseolus bean (Leguminosae, Phaseoleae) species of Costa Rica

Nordic Journal of Botany, Volume 2024, Issue 12, December 2024.
We aimed at an inventory of all populations of wild Phaseolus (bean) species in Costa Rica, in relation to future plant breeding. During the field work in 2003–2018, three new and rare bean species (i.e. P. albicarminus, P. angucianae and P. hygrophilus) were found in different montane forest habitats which originally occupy a small acreage.
Daniel G. Debouck, Néstor Chaves Barrantes, Rodolfo Araya Villalobos   +2 more
wiley   +1 more source