Results 121 to 130 of about 799 (153)
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Flora - Morphology, Distribution, Functional Ecology of Plants, 2011
Abstract Biological invasion is one of the major components of global change. In the Brazilian Cerrado, the fern Pteridium arachnoideum (neotropical bracken) is a potentially invasive species which is expected to change the vegetation structure of savannas. We assessed effects of the dominance of P.
Raquel C. Miatto +3 more
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Abstract Biological invasion is one of the major components of global change. In the Brazilian Cerrado, the fern Pteridium arachnoideum (neotropical bracken) is a potentially invasive species which is expected to change the vegetation structure of savannas. We assessed effects of the dominance of P.
Raquel C. Miatto +3 more
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Journal of Comparative Pathology, 2017
Oesophageal squamous cell carcinomas (SCCs) may be observed as exophytic masses or ulcerative or infiltrative endophytic neoplasms. However, in cattle, there is also an uncommon gross presentation as an annular stenotic thickening of the oesophageal wall.
T C, Faccin +4 more
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Oesophageal squamous cell carcinomas (SCCs) may be observed as exophytic masses or ulcerative or infiltrative endophytic neoplasms. However, in cattle, there is also an uncommon gross presentation as an annular stenotic thickening of the oesophageal wall.
T C, Faccin +4 more
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Biochemical Systematics and Ecology, 2007
Abstract Non-adapted plants growing in high altitude such as bracken fern Pteridium arachnoideum are exposed to environmental extremes that may induce a chemical adaptive response. Here we show that there is a non-uniform distribution of low (LMP) and high molecular weight (HMP) phenolics in the frond parts of P.
Miguel E. Alonso-Amelot +2 more
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Abstract Non-adapted plants growing in high altitude such as bracken fern Pteridium arachnoideum are exposed to environmental extremes that may induce a chemical adaptive response. Here we show that there is a non-uniform distribution of low (LMP) and high molecular weight (HMP) phenolics in the frond parts of P.
Miguel E. Alonso-Amelot +2 more
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Flora, 2019
Abstract Although certain clonal species are often overdominant in disturbed tropical ecosystems, it is often unclear how this success is related to their patterns of clonal growth and how they respond to abiotic heterogeneity. Here we describe ramet growth and survival in an overdominant Neotropical bracken fern (Pteridium arachnoideum) and assess ...
Rafael de Oliveira Xavier +2 more
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Abstract Although certain clonal species are often overdominant in disturbed tropical ecosystems, it is often unclear how this success is related to their patterns of clonal growth and how they respond to abiotic heterogeneity. Here we describe ramet growth and survival in an overdominant Neotropical bracken fern (Pteridium arachnoideum) and assess ...
Rafael de Oliveira Xavier +2 more
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Biochemical Systematics and Ecology, 1995
Abstract Significant chemical differences have been observed among the two neotropical varieties of bracken, caudatum and arachnoideum . Trans - o -hydroxycinnamic acid and coumarin have been found only in the caudatum variety. The concentration changes of ptaquiloside and pterosin B with blade growth were markedly different in caudatum and ...
Miguel E. Alonso-Amelot +2 more
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Abstract Significant chemical differences have been observed among the two neotropical varieties of bracken, caudatum and arachnoideum . Trans - o -hydroxycinnamic acid and coumarin have been found only in the caudatum variety. The concentration changes of ptaquiloside and pterosin B with blade growth were markedly different in caudatum and ...
Miguel E. Alonso-Amelot +2 more
openaire +1 more source
Weed Research, 2010
Roos K, Rödel HG & Beck E (2011). Short‐ and long‐term effects of weed control on pastures infested with Pteridium arachnoideum and an attempt to regenerate abandoned pastures in South Ecuador. Weed Research51, 165–176.Summary Pteridium spp. (bracken) is one of the most persistent weeds worldwide.
K ROOS, H G RÖDEL, E BECK
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Roos K, Rödel HG & Beck E (2011). Short‐ and long‐term effects of weed control on pastures infested with Pteridium arachnoideum and an attempt to regenerate abandoned pastures in South Ecuador. Weed Research51, 165–176.Summary Pteridium spp. (bracken) is one of the most persistent weeds worldwide.
K ROOS, H G RÖDEL, E BECK
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Invasion in the riparian zone: What is the effect of Pteridium arachnoideum on topsoil permeability?
Acta Oecologica, 2022Sérgio Fernandes Mendonça Filho +3 more
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