Jimmy Pincheira Ulbrich | Universidad Católica de Temuco (original) (raw)
Uploads
Papers by Jimmy Pincheira Ulbrich
Biodiversity Data Journal
During a botanical exploration in the Los Ruiles National Reserve (Chile), a population of Hymeno... more During a botanical exploration in the Los Ruiles National Reserve (Chile), a population of Hymenophyllum caudatum Bosch was identified. Fronds were found at the base of a rock, under a hygrophilous vegetation cover, in a ravine (35°49'56.49"S -72°30'42.44"W). The finding in this wilderness area extends the distribution by 120 km northwards on the mainland, which until now was limited to the coastal area of the city of Concepción (36°47'07.86"). This contribution presents an observed specimen, the site of the find and the accompanying species.
Ecology, 2020
This is the author manuscript accepted for publication and has undergone full peer review but has... more This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as
We compared the diversity of vines and vascular epiphytes among an evergreen forest fragment (Lau... more We compared the diversity of vines and vascular epiphytes among an evergreen forest fragment (Laureliopsis philippiana y Eucryphia cordifolia) and four fragments of secondary forest dominated for Nothofagus obliqua in an agro-forestry matrix landscape localized in the coastal range of Osorno, in Chile. Based on a sampling transects with ground-based observations, we obtained the species richness, floristic composition, frequency of occurrence (fo) and forest structure. The results showed that: (1) the richness was higher in the evergreen forest (19 species) and decreased in the fragments of N. obliqua (16 to 10 species), (2) the Hymenophyllaceae family (epiphytes) was the most diverse group (10 species), and presented more fo in the evergreen fragment, (3) vines increased their fo in the fragments of N. obliqua, (4) four and five species were found only in evergreen forest and N. obliqua, respectively, (5) floristic similarity ranged between 38% and 75%, (6) the state of forest develo
Boletin de la Sociedad Argentina de Botanica, Apr 30, 2021
Vascular epiphytes and climbing plants diversity in an agroforestal landscape in southern Chile: ... more Vascular epiphytes and climbing plants diversity in an agroforestal landscape in southern Chile: a comparison among native forest fragments. We compared the diversity of vines and vascular epiphytes among an evergreen forest fragment (Laureliopsis philippiana y Eucryphia cordifolia) and four fragments of secondary forest dominated for Nothofagus obliqua in an agro-forestry matrix landscape localized in the coastal range of Osorno, in Chile. Based on a sampling transects with ground-based observations, we obtained the species richness, floristic composition, frequency of occurrence (fo) and forest structure. The results showed that: (1) the richness was higher in the evergreen forest (19 species) and decreased in the fragments of N. obliqua (16 to 10 species), (2) the Hymenophyllaceae family (epiphytes) was the most diverse group (10 species), and presented more fo in the evergreen fragment, (3) vines increased their fo in the fragments of N. obliqua, (4) four and five species were found only in evergreen forest and N. obliqua, respectively, (5) floristic similarity ranged between 38% and 75%, (6) the state of forest development varied among forest communities. We conclude that changes in species diversity occur as a result of changes in forest structure
Perfiles Latinoamericanos, Apr 30, 2021
The data set comes from a tree inventory conducted in an evergreen forest fragment (dominated by ... more The data set comes from a tree inventory conducted in an evergreen forest fragment (dominated by Laureliopsis philippiana and Eucryphia cordifolia) and four fragments dominated by Nothofagus obliqua.
Se analizaron los principales cambios de uso del suelo en las unidades de paisaje (geosistemas) d... more Se analizaron los principales cambios de uso del suelo en las unidades de paisaje (geosistemas) de la cuenca hidrográfica del río Boroa entre 1994 y 2004. Para ello se planteó la hipótesis de que los cambios en la estructura del paisaje han sido conducidos fundamentalmente por acción antrópica generando importantes alteraciones en el paisaje ecológico. Se utilizaron mapas categóricos de uso/cobertura de suelo elaborados con material cartográfico y fotografías aéreas con su posterior corrección en terreno, información que fue complementada con el análisis geomorfológico y de unidades ambientales de la cuenca. Se comprobó una fuerte variación en la superficie de plantaciones forestales (principalmente Eucalyptus spp.), con una tasa de incremento anual que varió entre 3,2 y 28%, asociado principalmente a reconversión de uso y ocupación de cordones montañosos metamórficos. A su vez, se constató la expansión de zonas de humedales en terrenos anegadizos de llanuras, todo lo cual ha reduci...
We assessed the level of knowledge of the new law of native forests and forestry development held... more We assessed the level of knowledge of the new law of native forests and forestry development held by small forest owners in two areas of the Cordillera de Nahuelbuta in Chile. For this purpose, a survey was applied to 53 individuals (10% of households), which addressed five themes: (1) use of native forests, (2) participation in social networks and access to information, (3) general knowledge about the law, and (4) knowledge regarding the administration, and (5) promotion of the Law. The results showed that: (1) native forests used for wood and non wood products, (2) networks social and especially radio are essential for the transfer of information, (3) both the general knowledge of the law, as (4) the level of knowledge regarding the administration of the Law is insufficient, and (5) procedures are not known to be made to obtain the benefits of the Law. We concluded that: (1) the level of knowledge of the law is insufficient, (2) is essential to
revistaphyton.fund-romuloraggio.org …
Mundo Agrario, 2013
Esta obra está bajo licencia Creative Commons Atribución-NoComercial-SinDerivadas 2.5 Argentina A... more Esta obra está bajo licencia Creative Commons Atribución-NoComercial-SinDerivadas 2.5 Argentina ARTICULOS / ARTICLES Nivel de conocimiento de la nueva Ley de bosque nativo y fomento forestal: el caso de los pequeños propietarios forestales de la Cordillera de Nahuelbuta (Chile) Level of knowledge of the new law of native forest and forestry development: the case of small forest owners in the coastal range of Nahuelbuta (Chile)
Aim: Habitat reduction in fragmented landscapes provides an opportunity to study the biogeographi... more Aim: Habitat reduction in fragmented landscapes provides an opportunity to study the biogeographic patterns that drive changes in diversity in poorly studied metacommunities. In this study, colonization-extinction dynamics were indirectly evaluated through the analysis of the species-area relationship and the nestedness of vascular epiphytes and climbing plants in 30 swamp forest fragments. Location: Coast of the Araucanía Region in Chile. Taxon: Vascular epiphytes (16 species, mainly Pteridophytes) and climbing plants (15 species). Methods: We used the database in Pincheira-Ulbrich et al. (2016), where 904 trees were sampled and a total abundance of 41,097 fern fronds and 3,098 climbing stems were reported. For the species-area relationship, a simple linear regression model (SLR) and two models that consider the spatial autocorrelation of species richness among fragments, generalized least squares (GLS) and simultaneous autoregressive model (SAR), were compared. For the species nestedness, the nestedness measure based on overlap and decreasing fills (NODF) and weighted nestedness metric based on overlap and decreasing fill (WNODF) indexes were used on presence-absence and abundance matrices, respectively. These matrices were sorted by area size and distance from the largest fragment, and then contrasted with the probability distribution of a randomized null model based on 10,000 simulations. Results: The results showed that the area size had a significantly positive effect on epiphyte species richness, while spatial autocorrelation played a fundamental role in explaining the richness of climbing plants. Both metacommunities had a general nestedness structure in terms of species incidence, which was determined first by area size and secondly by isolation. Main conclusions: Our results indicate that local colonization processes determined by species’ dispersal capacities could be the predominant mechanism for the spatial configuration of climbing plant species composition. On the other hand, selective extinction determined by patch size could characterize the spatial structure of epiphyte species’ composition
Biodiversity Data Journal
During a botanical exploration in the Los Ruiles National Reserve (Chile), a population of Hymeno... more During a botanical exploration in the Los Ruiles National Reserve (Chile), a population of Hymenophyllum caudatum Bosch was identified. Fronds were found at the base of a rock, under a hygrophilous vegetation cover, in a ravine (35°49'56.49"S -72°30'42.44"W). The finding in this wilderness area extends the distribution by 120 km northwards on the mainland, which until now was limited to the coastal area of the city of Concepción (36°47'07.86"). This contribution presents an observed specimen, the site of the find and the accompanying species.
Ecology, 2020
This is the author manuscript accepted for publication and has undergone full peer review but has... more This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as
We compared the diversity of vines and vascular epiphytes among an evergreen forest fragment (Lau... more We compared the diversity of vines and vascular epiphytes among an evergreen forest fragment (Laureliopsis philippiana y Eucryphia cordifolia) and four fragments of secondary forest dominated for Nothofagus obliqua in an agro-forestry matrix landscape localized in the coastal range of Osorno, in Chile. Based on a sampling transects with ground-based observations, we obtained the species richness, floristic composition, frequency of occurrence (fo) and forest structure. The results showed that: (1) the richness was higher in the evergreen forest (19 species) and decreased in the fragments of N. obliqua (16 to 10 species), (2) the Hymenophyllaceae family (epiphytes) was the most diverse group (10 species), and presented more fo in the evergreen fragment, (3) vines increased their fo in the fragments of N. obliqua, (4) four and five species were found only in evergreen forest and N. obliqua, respectively, (5) floristic similarity ranged between 38% and 75%, (6) the state of forest develo
Boletin de la Sociedad Argentina de Botanica, Apr 30, 2021
Vascular epiphytes and climbing plants diversity in an agroforestal landscape in southern Chile: ... more Vascular epiphytes and climbing plants diversity in an agroforestal landscape in southern Chile: a comparison among native forest fragments. We compared the diversity of vines and vascular epiphytes among an evergreen forest fragment (Laureliopsis philippiana y Eucryphia cordifolia) and four fragments of secondary forest dominated for Nothofagus obliqua in an agro-forestry matrix landscape localized in the coastal range of Osorno, in Chile. Based on a sampling transects with ground-based observations, we obtained the species richness, floristic composition, frequency of occurrence (fo) and forest structure. The results showed that: (1) the richness was higher in the evergreen forest (19 species) and decreased in the fragments of N. obliqua (16 to 10 species), (2) the Hymenophyllaceae family (epiphytes) was the most diverse group (10 species), and presented more fo in the evergreen fragment, (3) vines increased their fo in the fragments of N. obliqua, (4) four and five species were found only in evergreen forest and N. obliqua, respectively, (5) floristic similarity ranged between 38% and 75%, (6) the state of forest development varied among forest communities. We conclude that changes in species diversity occur as a result of changes in forest structure
Perfiles Latinoamericanos, Apr 30, 2021
The data set comes from a tree inventory conducted in an evergreen forest fragment (dominated by ... more The data set comes from a tree inventory conducted in an evergreen forest fragment (dominated by Laureliopsis philippiana and Eucryphia cordifolia) and four fragments dominated by Nothofagus obliqua.
Se analizaron los principales cambios de uso del suelo en las unidades de paisaje (geosistemas) d... more Se analizaron los principales cambios de uso del suelo en las unidades de paisaje (geosistemas) de la cuenca hidrográfica del río Boroa entre 1994 y 2004. Para ello se planteó la hipótesis de que los cambios en la estructura del paisaje han sido conducidos fundamentalmente por acción antrópica generando importantes alteraciones en el paisaje ecológico. Se utilizaron mapas categóricos de uso/cobertura de suelo elaborados con material cartográfico y fotografías aéreas con su posterior corrección en terreno, información que fue complementada con el análisis geomorfológico y de unidades ambientales de la cuenca. Se comprobó una fuerte variación en la superficie de plantaciones forestales (principalmente Eucalyptus spp.), con una tasa de incremento anual que varió entre 3,2 y 28%, asociado principalmente a reconversión de uso y ocupación de cordones montañosos metamórficos. A su vez, se constató la expansión de zonas de humedales en terrenos anegadizos de llanuras, todo lo cual ha reduci...
We assessed the level of knowledge of the new law of native forests and forestry development held... more We assessed the level of knowledge of the new law of native forests and forestry development held by small forest owners in two areas of the Cordillera de Nahuelbuta in Chile. For this purpose, a survey was applied to 53 individuals (10% of households), which addressed five themes: (1) use of native forests, (2) participation in social networks and access to information, (3) general knowledge about the law, and (4) knowledge regarding the administration, and (5) promotion of the Law. The results showed that: (1) native forests used for wood and non wood products, (2) networks social and especially radio are essential for the transfer of information, (3) both the general knowledge of the law, as (4) the level of knowledge regarding the administration of the Law is insufficient, and (5) procedures are not known to be made to obtain the benefits of the Law. We concluded that: (1) the level of knowledge of the law is insufficient, (2) is essential to
revistaphyton.fund-romuloraggio.org …
Mundo Agrario, 2013
Esta obra está bajo licencia Creative Commons Atribución-NoComercial-SinDerivadas 2.5 Argentina A... more Esta obra está bajo licencia Creative Commons Atribución-NoComercial-SinDerivadas 2.5 Argentina ARTICULOS / ARTICLES Nivel de conocimiento de la nueva Ley de bosque nativo y fomento forestal: el caso de los pequeños propietarios forestales de la Cordillera de Nahuelbuta (Chile) Level of knowledge of the new law of native forest and forestry development: the case of small forest owners in the coastal range of Nahuelbuta (Chile)
Aim: Habitat reduction in fragmented landscapes provides an opportunity to study the biogeographi... more Aim: Habitat reduction in fragmented landscapes provides an opportunity to study the biogeographic patterns that drive changes in diversity in poorly studied metacommunities. In this study, colonization-extinction dynamics were indirectly evaluated through the analysis of the species-area relationship and the nestedness of vascular epiphytes and climbing plants in 30 swamp forest fragments. Location: Coast of the Araucanía Region in Chile. Taxon: Vascular epiphytes (16 species, mainly Pteridophytes) and climbing plants (15 species). Methods: We used the database in Pincheira-Ulbrich et al. (2016), where 904 trees were sampled and a total abundance of 41,097 fern fronds and 3,098 climbing stems were reported. For the species-area relationship, a simple linear regression model (SLR) and two models that consider the spatial autocorrelation of species richness among fragments, generalized least squares (GLS) and simultaneous autoregressive model (SAR), were compared. For the species nestedness, the nestedness measure based on overlap and decreasing fills (NODF) and weighted nestedness metric based on overlap and decreasing fill (WNODF) indexes were used on presence-absence and abundance matrices, respectively. These matrices were sorted by area size and distance from the largest fragment, and then contrasted with the probability distribution of a randomized null model based on 10,000 simulations. Results: The results showed that the area size had a significantly positive effect on epiphyte species richness, while spatial autocorrelation played a fundamental role in explaining the richness of climbing plants. Both metacommunities had a general nestedness structure in terms of species incidence, which was determined first by area size and secondly by isolation. Main conclusions: Our results indicate that local colonization processes determined by species’ dispersal capacities could be the predominant mechanism for the spatial configuration of climbing plant species composition. On the other hand, selective extinction determined by patch size could characterize the spatial structure of epiphyte species’ composition