Results 31 to 40 of about 799 (153)

Festuca paniculata meadows in Ticino (Switzerland) and their Alpine environment [PDF]

, 2005
Festuca paniculata (L.) Schinz & Thellung locally dominates montane and subalpine meadows of the Alps and other mountains of southern Europe. Vegetation releves were carried out in Switzerland and northern Italy to study the site conditions under ...
Eggenberg, S., Maire, S., Selldorf, P., Vittoz, P.   +3 more
core   +1 more source

Structure and chemical nature of intercellular protuberances in Dennstaedtiaceae rhizomes (Polypodiopsida)

Acta Scientiarum: Biological Sciences, 2023
Intercellular protuberances (IPs) are projections on the cell surface and have been reported for families of ferns, Gymnosperms, and Angiosperms. Data on the type, chemical composition, and distribution of these structures among vascular plants are ...
Ivan Becari-Viana, Pedro Bond Schwartsburd , Aristéa Alves Azevedo   +2 more
doaj   +1 more source

Control of bracken by promoting regeneration of woody vegetation in the Yucatan Peninsula

Trees, Forests and People, 2023
In the tropical dry forest of the Yucatan Peninsula in southern Mexico, as in many parts of the Neotropics, deforested areas have been colonized by the highly competitive invasive bracken (Pteridium arachnoideum), which inhabits naturally regenerated and
Samuel Israel Levy-Tacher, Alejandro Morón-Ríos   +1 more
doaj   +1 more source

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeografic Province that produce monolete spores and its systematic implications (I): Blotiella lindeniana , Histiopteris incisa and Paesia glandulosa [PDF]

, 2017
The genera of Dennstaedtiaceae have sporophytes with very different morphological characteristics between each other, and this feature has made difficult the systematic circumscription of the family.
Marquez, Gonzalo Javier, Morbelli, Marta Alicia, Yañez, Agustina   +2 more
core   +2 more sources

Kinetics of the Natural Evolution of Hydrogen Cyanide in Plants in Neotropical Pteridium arachnoideum and its Ecological Significance [PDF]

Journal of Chemical Ecology, 2005
The time-dependent natural release of hydrogen cyanide (HCN) was studied quantitatively using young croziers of the neotropical bracken fern Pteridium arachnoideum. HCN production was quantified in crushed tissue using a flow reactor at 30.0 +/- 0.1 degrees C. Released HCN was carried into appropriate traps with a moist air flow.
Miguel E, Alonso-Amelot, Alberto, Oliveros-Bastidas   +1 more
openaire   +2 more sources

Respuesta de los escarabajos carroñeros Nicrophorus olidus y Oxelytrum discicolle (Coleoptera: Silphidae) a la restauración activa y pasiva en un paisaje de bosque de niebla en México

Revista Mexicana de Biodiversidad, 2023
La restauración activa y la restauración pasiva son estrategias utilizadas para recuperar paisajes forestales. Pocos estudios han evaluado la recuperación de la fauna comparando diferentes estrategias de restauración de la misma edad en un paisaje ...
Juan M. Díaz García, Fabiola López-Barrera, Eduardo Pineda   +2 more
doaj   +1 more source

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

Clastogenic effect of bracken fern (Pteridium aquilinum v. arachnoideum) diet in peripheral lymphocytes of human consumers: preliminary data [PDF]

Veterinary and Comparative Oncology, 2003
AbstractIngestion of bracken fern (Pteridium aquilinum v. arachnoideum) is associated with digestive tract cancer in different regions of Japan, Venezuela and Brazil. In view of reports that dietary bracken fern causes chromosomal instability in cattle, the clastogenic effect of bracken fern was investigated, in a preliminary study, in peripheral ...
R C, Recouso, R C, Stocco dos Santos, R, Freitas, R C, Santos, A C, de Freitas, O, Brunner, W, Beçak, C J, Lindsey   +7 more
openaire   +2 more sources

Fire has short-term negative effects on a super-dominant native fern, Pteridium arachnoideum (Dennstaedtiaceae), in a Brazilian savanna

Nature Conservation Research, 2022
Although fire occurrence plays a central role in the dominance of the super-dominant bracken fern Pteridium arachnoideum in Neotropical forests, it is unclear whether this applies to the Brazilian savanna (Cerrado), which vegetation is naturally adapted to fire. We assessed fire effects on the aboveground biomass of P.
Fernanda C.S. Tiberio, Rafael O. Xavier, Pavel Dodonov, Dalva M. Silva Matos   +3 more
openaire   +1 more source