INVESTIGADORES
TECCO Paula Andrea
artículos
Título:
Experimental evidence of positive association between exotic woody species: Facilitation by Pyracantha angustifolia on Ligustrum lucidum sapling survival
Autor/es:
TECCO, PA; DÍAZ, S; GURVICH, DE; PÉREZ-HARGUINDEGUY, N; CABIDO, M; BERTONE, GA
Revista:
APPLIED VEGETATION SCIENCE
Editorial:
Opulus Press
Referencias:
Año: 2007 vol. 10 p. 211 - 218
ISSN:
1402-2001
Resumen:
Questions: 1. Is there any post-dispersal positive effect of
the exotic shrub Pyracantha angustifolia on the success of
the exotic shrub Pyracantha angustifolia on the success of
the exotic shrub Pyracantha angustifolia on the success of
the exotic shrub Pyracantha angustifolia on the success of
1. Is there any post-dispersal positive effect of
the exotic shrub Pyracantha angustifolia on the success ofPyracantha angustifolia on the success of
Ligustrum lucidum seedlings, as compared to the effect of
the native Condalia montana or the open herbaceous patches
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
the native Condalia montana or the open herbaceous patches
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
the native Condalia montana or the open herbaceous patches
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
the native Condalia montana or the open herbaceous patches
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
seedlings, as compared to the effect of
the native Condalia montana or the open herbaceous patches
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
between shrubs? 2. Is the possible facilitation by Pyracantha
Condalia montana or the open herbaceous patches
between shrubs? 2. Is the possible facilitation by PyracanthaPyracantha
and/or Condalia related to differential emergence, growth, or
survival of Ligustrum seedlings under their canopies?
survival of Ligustrum seedlings under their canopies?
survival of Ligustrum seedlings under their canopies?
survival of Ligustrum seedlings under their canopies?
Condalia related to differential emergence, growth, or
survival of Ligustrum seedlings under their canopies?Ligustrum seedlings under their canopies?
Location: Córdoba, central Argentina.Córdoba, central Argentina.
Methods: We designed three treatments, in which ten mature
individuals of Pyracantha, ten of the dominant native shrub
individuals of Pyracantha, ten of the dominant native shrub
individuals of Pyracantha, ten of the dominant native shrub
individuals of Pyracantha, ten of the dominant native shrub
We designed three treatments, in which ten mature
individuals of Pyracantha, ten of the dominant native shrubPyracantha, ten of the dominant native shrub
Condalia montana, and ten patches without shrub cover were
involved. In each treatment we planted seeds and saplings of
involved. In each treatment we planted seeds and saplings of
involved. In each treatment we planted seeds and saplings of
involved. In each treatment we planted seeds and saplings of
and ten patches without shrub cover were
involved. In each treatment we planted seeds and saplings of
Ligustrum collected from nearby natural populations. Seedlings
emerging from the planted seeds were harvested after one year
to measure growth. Survival of the transplanted saplings was
recorded every two month during a year. Half of the planted
seeds and transplanted saplings were cage-protected from
rodents.
emerging from the planted seeds were harvested after one year
to measure growth. Survival of the transplanted saplings was
recorded every two month during a year. Half of the planted
seeds and transplanted saplings were cage-protected from
rodents.
emerging from the planted seeds were harvested after one year
to measure growth. Survival of the transplanted saplings was
recorded every two month during a year. Half of the planted
seeds and transplanted saplings were cage-protected from
rodents.
emerging from the planted seeds were harvested after one year
to measure growth. Survival of the transplanted saplings was
recorded every two month during a year. Half of the planted
seeds and transplanted saplings were cage-protected from
rodents.
collected from nearby natural populations. Seedlings
emerging from the planted seeds were harvested after one year
to measure growth. Survival of the transplanted saplings was
recorded every two month during a year. Half of the planted
seeds and transplanted saplings were cage-protected from
rodents.
Results: Ligustrum seedling emergence did not differ among
treatments while growth was significantly higher in the
absence of shrub cover. Sapling survival was significantly
higher under the canopy of Pyracantha, intermediate under
treatments while growth was significantly higher in the
absence of shrub cover. Sapling survival was significantly
higher under the canopy of Pyracantha, intermediate under
treatments while growth was significantly higher in the
absence of shrub cover. Sapling survival was significantly
higher under the canopy of Pyracantha, intermediate under
treatments while growth was significantly higher in the
absence of shrub cover. Sapling survival was significantly
higher under the canopy of Pyracantha, intermediate under
Ligustrum seedling emergence did not differ among
treatments while growth was significantly higher in the
absence of shrub cover. Sapling survival was significantly
higher under the canopy of Pyracantha, intermediate underPyracantha, intermediate under
Condalia, and lowest in the absence of shrub cover. Caging
did not affect growth but enhanced seedling emergence and
sapling survival.
did not affect growth but enhanced seedling emergence and
sapling survival.
did not affect growth but enhanced seedling emergence and
sapling survival.
did not affect growth but enhanced seedling emergence and
sapling survival.
and lowest in the absence of shrub cover. Caging
did not affect growth but enhanced seedling emergence and
sapling survival.
Conclusion: The differential sapling survival in the shrub
canopy treatments is consistent with natural sapling distribution.
canopy treatments is consistent with natural sapling distribution.
canopy treatments is consistent with natural sapling distribution.
canopy treatments is consistent with natural sapling distribution.
: The differential sapling survival in the shrub
canopy treatments is consistent with natural sapling distribution.
Pyracantha and, less so, Condalia, has a nurse-plant effect onand, less so, Condalia, has a nurse-plant effect on
Ligustrum. This results from contrasting effects of the shrubs
on different stages of the life cycle of Ligustrum: no effect on
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
on different stages of the life cycle of Ligustrum: no effect on
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
on different stages of the life cycle of Ligustrum: no effect on
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
on different stages of the life cycle of Ligustrum: no effect on
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
. This results from contrasting effects of the shrubs
on different stages of the life cycle of Ligustrum: no effect on
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackle
Ligustrum: no effect on
seedling emergence, negative on seedling growth, and positive
on sapling survival. This suggests that efforts to control
the expansion of Ligustrum over the landscape should tackleLigustrum over the landscape should tackle
Pyracantha as well.as well.