Jose Manuel De Miguel Garcinuno | Universidad Complutense de Madrid (original) (raw)

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Papers by Jose Manuel De Miguel Garcinuno

Research paper thumbnail of Estructura de un sistema silvopastoral de dehesa. Vegetación, hábitats y uso del territorio por el ganado

EL ESTUDIO SE ENMARCA DENTRO DE LA NECESIDAD, CADA DIA MAS RECONOCIDA, DE INCORPORAR CRITERIOS EC... more EL ESTUDIO SE ENMARCA DENTRO DE LA NECESIDAD, CADA DIA MAS RECONOCIDA, DE INCORPORAR CRITERIOS ECOLOGICOS A LAS PRACTICAS AGRARIAS. EN ESTE SENTIDO PRETENDE APORTAR UNAS BASES ECOLOGICAS SOBRE LAS QUE FUNDAMENTAR LA OPTIMIZACION DEL MANEJO DE DEHESAS. EL PLANTEAMIENTO Y LA METODOLOGIA RESPONDEN A UN ENFOQUE SISTEMICO, QUE CONSIDERA LA UNIDAD DE GESTION DENOMINADA DEHESA COMO EL RESULTADO DE LAS INTERACCIONES ENTRE LOS ELEMENTOS QUE LA CONFORMAN. DE ACUERDO CON ESTE PUNTO DE VISTA, LA IDENTIFICACION DE TALES ELEMENTOS Y EL CONOCIMIENTO DE SUS INTERRELACIONES E INFLUENCIAS MUTUAS, CONSTITUYE UN ASPECTO CENTRAL DEL TRABAJO. EL ESTUDIO SE CENTRA EN DOS COMPONENTES PRODUCTIVOS BASICOS DE LA DEHESA: LOS PASTOS Y EL GANADO QUE LOS APROVECHA EN REGIMEN DE LIBERTAD. EN LA MEMORIA SE PONEN DE MANIFIESTO LOS CONDICIONANTES ECOLOGICOS MAS RELEVANTES DE CADA UNO DE ELLOS, Y SU INTERACCION EN EL ESPACIO Y EN EL TIEMPO. ENTRE LAS PRINCIPALES APORTACIONES PUEDEN DESTACARSE, LA VISION DINAMICA EN PLANO FACTORIAL DE LAS COMUNIDADES DE PASTO CON LOS FACTORES QUE LAS CONDICIONAN, EL CONOCIMIENTO DE LA DESIGUAL INFLUENCIA DEL ARBOLADO SOBRE EL PASTO SEGUN EL AMBIENTE GEOFISICO, Y EN ESPECIAL EL ESTUDIO DETALLADO DEL GANADO (REBANO DE VACAS EN REGIMEN EXTENSIVO) EN RELACION CON EL USO DEL TERRITORIO Y LA DISTRIBUCION EN EL DE SUS ACTIVIDADES EN LAS DISTINTAS EPOCAS DEL ANO. LA INTENSIDAD Y LOCALIZACION DE LAS CONDUCTAS SE UTILIZA PARA DETECTAR MODELOS IDEALES DE HABITAT, CUYA UTILIDAD PARA RACIONALIZAR CON CRITERIOS ECOLOGICOS LA GESTION DE LAS DEHESAS CONSIDERAMOS QUE ES MUY ALTA.

Research paper thumbnail of Procesos participativos como herramientas para la comprensión del análisis de sistemas ecológicos en el ámbito universitario: el caso del modelo logístico

Research paper thumbnail of Variabilidad florística y diversidad biológica en pastizales de la Reserva de la Biósfera Sierra del Rosario, Cuba

Acta botánica cubana, 2002

Research paper thumbnail of Percepción de problemas ambientales por lasadministraciones locales. Comunidad Autónoma de Madrid

Ambienta: La revista del Ministerio de Medio Ambiente, Sep 1, 2016

Percepción de problemas ambientales por las administraciones locales… 91 116 / Septiembre 2016 fi... more Percepción de problemas ambientales por las administraciones locales… 91 116 / Septiembre 2016 ficación Ambiental (SIPA). La Administración lo aceptó. El sistema no estaría basado directamente en datos probablemente útiles para algunos objetivos, pero estos, en sí mismos, apenas estaban aún definidos sino en una detallada tipología de "problemas ambientales". Vacas nativas avileñas y mostrencas, así como limusinas y charolesas, pastan en la dehesa comunal de Collado Villalba (Centro-Oeste de la Comunidad de Madrid). A principios de los 90 la Administración Local del municipio menospreció este uso tradicional, promoviendo la ocupación de la dehesa con construcciones de distintos fines, entre ellos el urbano. Manifestaciones de grupos ecologistas y expertos ambientales consiguieron paralizar los proyectos más insostenibles. La fotografía muestra el uso ganadero comunal de la mayor parte de la dehesa en la actualidad, protegida también con fines recreativos y educativos frente a los intereses especulativos y corruptelas tan habituales en buena parte de los municipios madrileños. Foto: Álvaro López.

Research paper thumbnail of A new hypothesis on humid and dry tropical forests succession

Acta botánica cubana, 2016

In this paper 221 forest trees are grouped according to their habitat preferences into species pr... more In this paper 221 forest trees are grouped according to their habitat preferences into species preferring humid or dry and/or saline habitats or indifferent to the habitat type. Eleven functional traits classes (seeds per tree, seed size, seed weight, seeds per fruit, tolerance to shade, selectivity to habitat, sclerophylly, wood density, foliar area, tree height and tree volume) are arranged 1 to 4

Research paper thumbnail of Programa piloto de uso del portafolio como herramienta docente en el Grado de Biología

Memoria final del proyecto de Innovacion educativa "Programa piloto de uso del portafolio co... more Memoria final del proyecto de Innovacion educativa "Programa piloto de uso del portafolio como herramienta docente en el Grado de Biologia"

Research paper thumbnail of Biodiversidad en ecosistemas fluviales: Las aves acuáticas en la cuenca media del Tajo

La justificación de este trabajo se encuadra dentro de la importancia que los cursos fluviales ha... more La justificación de este trabajo se encuadra dentro de la importancia que los cursos fluviales han adquirido en la confección de la red de espacios naturales protegidos de la Comunidad de Madrid. Un total de cuatro de estos espacios: Parque Regional de la cuenca alta del río Manzanares, Parque Regional en torno a los ejes de los cursos bajos de los ríos Manzanares y Jarama, Parque Regional del curso medio del río Guadarrama y su entorno y Régimen Preventivo de Protección soto del río Henares, focalizan su territorio alrededor de un río o cuenca fluvial. Por otro lado, la propuesta madrileña de Lugares de Importancia Comunitaria (LICs) en la Red Natura 2000 incluye la totalidad de los cursos fluviales principales con fines de conectividad e importancia para la conservación de la biodiversidad. A pesar de esta importancia de los cursos fluviales para la conservación del patrimonio natural, sufren infinidad de impactos (obras de regulación hidráulica, sobreexplotación del agua, extracc...

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Agriculture, Ecosystems & Environment, 2014

ABSTRACT Grazing systems that combine grasslands and woodlands represent changes in tree cover th... more ABSTRACT Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.

Research paper thumbnail of Catálogo de la flora vascular de INIA Tamel Aike, Coyhaique, Chile

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Grazing systems that combine grasslands and woodlands represent changes in tree cover that influe... more Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Grazing systems that combine grasslands and woodlands represent changes in tree cover that influe... more Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.

Research paper thumbnail of La evaluación on-line desde la experiencia docente

Research paper thumbnail of Sanchez-Jardon etal 2014 ANPP drivers

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Grazing systems that combine grasslands and woodlands represent changes in tree cover that influe... more Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.

Research paper thumbnail of Estructura de un sistema silvopastoral de dehesa. Vegetación, hábitats y uso del territorio por el ganado

EL ESTUDIO SE ENMARCA DENTRO DE LA NECESIDAD, CADA DIA MAS RECONOCIDA, DE INCORPORAR CRITERIOS EC... more EL ESTUDIO SE ENMARCA DENTRO DE LA NECESIDAD, CADA DIA MAS RECONOCIDA, DE INCORPORAR CRITERIOS ECOLOGICOS A LAS PRACTICAS AGRARIAS. EN ESTE SENTIDO PRETENDE APORTAR UNAS BASES ECOLOGICAS SOBRE LAS QUE FUNDAMENTAR LA OPTIMIZACION DEL MANEJO DE DEHESAS. EL PLANTEAMIENTO Y LA METODOLOGIA RESPONDEN A UN ENFOQUE SISTEMICO, QUE CONSIDERA LA UNIDAD DE GESTION DENOMINADA DEHESA COMO EL RESULTADO DE LAS INTERACCIONES ENTRE LOS ELEMENTOS QUE LA CONFORMAN. DE ACUERDO CON ESTE PUNTO DE VISTA, LA IDENTIFICACION DE TALES ELEMENTOS Y EL CONOCIMIENTO DE SUS INTERRELACIONES E INFLUENCIAS MUTUAS, CONSTITUYE UN ASPECTO CENTRAL DEL TRABAJO. EL ESTUDIO SE CENTRA EN DOS COMPONENTES PRODUCTIVOS BASICOS DE LA DEHESA: LOS PASTOS Y EL GANADO QUE LOS APROVECHA EN REGIMEN DE LIBERTAD. EN LA MEMORIA SE PONEN DE MANIFIESTO LOS CONDICIONANTES ECOLOGICOS MAS RELEVANTES DE CADA UNO DE ELLOS, Y SU INTERACCION EN EL ESPACIO Y EN EL TIEMPO. ENTRE LAS PRINCIPALES APORTACIONES PUEDEN DESTACARSE, LA VISION DINAMICA EN PLANO FACTORIAL DE LAS COMUNIDADES DE PASTO CON LOS FACTORES QUE LAS CONDICIONAN, EL CONOCIMIENTO DE LA DESIGUAL INFLUENCIA DEL ARBOLADO SOBRE EL PASTO SEGUN EL AMBIENTE GEOFISICO, Y EN ESPECIAL EL ESTUDIO DETALLADO DEL GANADO (REBANO DE VACAS EN REGIMEN EXTENSIVO) EN RELACION CON EL USO DEL TERRITORIO Y LA DISTRIBUCION EN EL DE SUS ACTIVIDADES EN LAS DISTINTAS EPOCAS DEL ANO. LA INTENSIDAD Y LOCALIZACION DE LAS CONDUCTAS SE UTILIZA PARA DETECTAR MODELOS IDEALES DE HABITAT, CUYA UTILIDAD PARA RACIONALIZAR CON CRITERIOS ECOLOGICOS LA GESTION DE LAS DEHESAS CONSIDERAMOS QUE ES MUY ALTA.

Research paper thumbnail of Procesos participativos como herramientas para la comprensión del análisis de sistemas ecológicos en el ámbito universitario: el caso del modelo logístico

Research paper thumbnail of Variabilidad florística y diversidad biológica en pastizales de la Reserva de la Biósfera Sierra del Rosario, Cuba

Acta botánica cubana, 2002

Research paper thumbnail of Percepción de problemas ambientales por lasadministraciones locales. Comunidad Autónoma de Madrid

Ambienta: La revista del Ministerio de Medio Ambiente, Sep 1, 2016

Percepción de problemas ambientales por las administraciones locales… 91 116 / Septiembre 2016 fi... more Percepción de problemas ambientales por las administraciones locales… 91 116 / Septiembre 2016 ficación Ambiental (SIPA). La Administración lo aceptó. El sistema no estaría basado directamente en datos probablemente útiles para algunos objetivos, pero estos, en sí mismos, apenas estaban aún definidos sino en una detallada tipología de "problemas ambientales". Vacas nativas avileñas y mostrencas, así como limusinas y charolesas, pastan en la dehesa comunal de Collado Villalba (Centro-Oeste de la Comunidad de Madrid). A principios de los 90 la Administración Local del municipio menospreció este uso tradicional, promoviendo la ocupación de la dehesa con construcciones de distintos fines, entre ellos el urbano. Manifestaciones de grupos ecologistas y expertos ambientales consiguieron paralizar los proyectos más insostenibles. La fotografía muestra el uso ganadero comunal de la mayor parte de la dehesa en la actualidad, protegida también con fines recreativos y educativos frente a los intereses especulativos y corruptelas tan habituales en buena parte de los municipios madrileños. Foto: Álvaro López.

Research paper thumbnail of A new hypothesis on humid and dry tropical forests succession

Acta botánica cubana, 2016

In this paper 221 forest trees are grouped according to their habitat preferences into species pr... more In this paper 221 forest trees are grouped according to their habitat preferences into species preferring humid or dry and/or saline habitats or indifferent to the habitat type. Eleven functional traits classes (seeds per tree, seed size, seed weight, seeds per fruit, tolerance to shade, selectivity to habitat, sclerophylly, wood density, foliar area, tree height and tree volume) are arranged 1 to 4

Research paper thumbnail of Programa piloto de uso del portafolio como herramienta docente en el Grado de Biología

Memoria final del proyecto de Innovacion educativa "Programa piloto de uso del portafolio co... more Memoria final del proyecto de Innovacion educativa "Programa piloto de uso del portafolio como herramienta docente en el Grado de Biologia"

Research paper thumbnail of Biodiversidad en ecosistemas fluviales: Las aves acuáticas en la cuenca media del Tajo

La justificación de este trabajo se encuadra dentro de la importancia que los cursos fluviales ha... more La justificación de este trabajo se encuadra dentro de la importancia que los cursos fluviales han adquirido en la confección de la red de espacios naturales protegidos de la Comunidad de Madrid. Un total de cuatro de estos espacios: Parque Regional de la cuenca alta del río Manzanares, Parque Regional en torno a los ejes de los cursos bajos de los ríos Manzanares y Jarama, Parque Regional del curso medio del río Guadarrama y su entorno y Régimen Preventivo de Protección soto del río Henares, focalizan su territorio alrededor de un río o cuenca fluvial. Por otro lado, la propuesta madrileña de Lugares de Importancia Comunitaria (LICs) en la Red Natura 2000 incluye la totalidad de los cursos fluviales principales con fines de conectividad e importancia para la conservación de la biodiversidad. A pesar de esta importancia de los cursos fluviales para la conservación del patrimonio natural, sufren infinidad de impactos (obras de regulación hidráulica, sobreexplotación del agua, extracc...

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Agriculture, Ecosystems & Environment, 2014

ABSTRACT Grazing systems that combine grasslands and woodlands represent changes in tree cover th... more ABSTRACT Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.

Research paper thumbnail of Catálogo de la flora vascular de INIA Tamel Aike, Coyhaique, Chile

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Grazing systems that combine grasslands and woodlands represent changes in tree cover that influe... more Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Grazing systems that combine grasslands and woodlands represent changes in tree cover that influe... more Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.

Research paper thumbnail of La evaluación on-line desde la experiencia docente

Research paper thumbnail of Sanchez-Jardon etal 2014 ANPP drivers

Research paper thumbnail of Native and non-native herbaceous species dependence on tree cover in grazing systems from northern Chilean Patagonia

Grazing systems that combine grasslands and woodlands represent changes in tree cover that influe... more Grazing systems that combine grasslands and woodlands represent changes in tree cover that influences herbaceous vegetation and may threaten the native forest flora. We studied these influences in Chilean Patagonia where recent colonization resulted in the fragmentation of the lenga (Nothofagus pumilio) forests leading to a mosaic-type landscape. The herbaceous vegetation, transmitted photosynthetically active radiation (PAR) and other forest structure characteristics were sampled in 15 (20 m × 20 m) plots differing in tree cover for two years, while considering the relative position (below or beyond) of tree crowns. Herbaceous species were classified as forest, non-forest, and forest indifferent species according to their preference, rejection or indifference to the forest environment. Species richness decreased with increasing PAR but this was dependent on the response of non-natives. Species composition varied gradually from open grasslands to dense forests, according to transmitted PAR values. Native species were associated to either forests or open areas, but the number of native species did not vary along the tree cover gradient (beyond tree crowns) or even decreased (below tree crowns). Non-native species dominated in the open grasslands and beyond tree crowns and its richness increased with transmitted PAR. The occurrence of grasslands and dense forests within this grazing system is shown to promote higher species richness. Management will consider that dense forest patches are necessary for maintaining a high diversity of native species, since isolated trees or low wooded areas do not guarantee the persistence of all native species associated to the original forests.