Early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses
Tropical montane cloud forest has been undergoing a drastic reduction because of its widespread conversion to pastures. Once these forests have been cleared exotic grasses are deliberately introduced for forage production. Exotic grass species commonly form monodominant stands and produce more biomass than native grass species, resulting in the inhibition of secondary succession and tree regeneration. The purpose of this study was to assess the effect of native vs. exotic grass species on the early establishment of two native tree seedlings (Mexican alder, Alnus acuminata and Jalapa oak, Quercus xalapensis) on an abandoned farm in central Veracruz, Mexico. Seedling survival and growth were monitored (over 46 weeks) in relation to grass cover and height, and available photosynthetic active radiation (PAR). More seedlings survived in the presence of the native grass Panicum glutinosum than those growing with the exotic grass Cynodon plectostachyus (92% vs. 48%). The causes of seedling mortality varied between species; Q. xalapensis was affected by herbivory by voles but mainly in the exotic grass-dominated stands, whereas A. acuminata seedlings died due to competition with the exotic grass. A. acuminata seedlings increased more in height in the exotic grass-dominated stands (102 ± 7.8 cm) compared to native grass-dominated stands (51 ± 4.7 cm). Grass layer height, cover and available PAR were correlated (Pearson; p < 0.05). In the exotic grass dominated plots, grass layer height was correlated with the relative height growth rates of Q. xalapensis (Pearson; p < 0.05). These results indicate that the exotic grass may be affecting tree regeneration directly (grass competition) and indirectly (higher herbivory). Passive restoration may occur once P. glutinosum dominated pastures are abandoned. However, when C. plectostachyus dominates, introduction of early and mid successional tree seedlings protected against vole damage is needed.
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Format: | Texto biblioteca |
Language: | eng |
Subjects: | Restauración forestal, Bosque de niebla, Especies introducidas, Pastos, Alnus acuminata, Quercus xalapensis, Cynodon plectostachyus, |
Online Access: | https://www.sciencedirect.com/science/article/pii/S0378112711000363 |
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Restauración forestal Bosque de niebla Especies introducidas Pastos Alnus acuminata Quercus xalapensis Cynodon plectostachyus Restauración forestal Bosque de niebla Especies introducidas Pastos Alnus acuminata Quercus xalapensis Cynodon plectostachyus |
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Restauración forestal Bosque de niebla Especies introducidas Pastos Alnus acuminata Quercus xalapensis Cynodon plectostachyus Restauración forestal Bosque de niebla Especies introducidas Pastos Alnus acuminata Quercus xalapensis Cynodon plectostachyus Ortega Pieck, Aline autora López Barrera, Fabiola autor 14210 Ramírez Marcial, Neptalí 1963- Doctor autora 5449 García Franco, José G. Doctor autor 14168 Meza Oliver, Rocío autora Early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses |
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Tropical montane cloud forest has been undergoing a drastic reduction because of its widespread conversion to pastures. Once these forests have been cleared exotic grasses are deliberately introduced for forage production. Exotic grass species commonly form monodominant stands and produce more biomass than native grass species, resulting in the inhibition of secondary succession and tree regeneration. The purpose of this study was to assess the effect of native vs. exotic grass species on the early establishment of two native tree seedlings (Mexican alder, Alnus acuminata and Jalapa oak, Quercus xalapensis) on an abandoned farm in central Veracruz, Mexico. Seedling survival and growth were monitored (over 46 weeks) in relation to grass cover and height, and available photosynthetic active radiation (PAR). More seedlings survived in the presence of the native grass Panicum glutinosum than those growing with the exotic grass Cynodon plectostachyus (92% vs. 48%). The causes of seedling mortality varied between species; Q. xalapensis was affected by herbivory by voles but mainly in the exotic grass-dominated stands, whereas A. acuminata seedlings died due to competition with the exotic grass. A. acuminata seedlings increased more in height in the exotic grass-dominated stands (102 ± 7.8 cm) compared to native grass-dominated stands (51 ± 4.7 cm). Grass layer height, cover and available PAR were correlated (Pearson; p < 0.05). In the exotic grass dominated plots, grass layer height was correlated with the relative height growth rates of Q. xalapensis (Pearson; p < 0.05). These results indicate that the exotic grass may be affecting tree regeneration directly (grass competition) and indirectly (higher herbivory). Passive restoration may occur once P. glutinosum dominated pastures are abandoned. However, when C. plectostachyus dominates, introduction of early and mid successional tree seedlings protected against vole damage is needed. |
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Texto |
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Restauración forestal Bosque de niebla Especies introducidas Pastos Alnus acuminata Quercus xalapensis Cynodon plectostachyus |
author |
Ortega Pieck, Aline autora López Barrera, Fabiola autor 14210 Ramírez Marcial, Neptalí 1963- Doctor autora 5449 García Franco, José G. Doctor autor 14168 Meza Oliver, Rocío autora |
author_facet |
Ortega Pieck, Aline autora López Barrera, Fabiola autor 14210 Ramírez Marcial, Neptalí 1963- Doctor autora 5449 García Franco, José G. Doctor autor 14168 Meza Oliver, Rocío autora |
author_sort |
Ortega Pieck, Aline autora |
title |
Early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses |
title_short |
Early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses |
title_full |
Early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses |
title_fullStr |
Early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses |
title_full_unstemmed |
Early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses |
title_sort |
early seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses |
url |
https://www.sciencedirect.com/science/article/pii/S0378112711000363 |
work_keys_str_mv |
AT ortegapieckalineautora earlyseedlingestablishmentoftwotropicalmontanecloudforesttreespeciestheroleofnativeandexoticgrasses AT lopezbarrerafabiolaautor14210 earlyseedlingestablishmentoftwotropicalmontanecloudforesttreespeciestheroleofnativeandexoticgrasses AT ramirezmarcialneptali1963doctorautora5449 earlyseedlingestablishmentoftwotropicalmontanecloudforesttreespeciestheroleofnativeandexoticgrasses AT garciafrancojosegdoctorautor14168 earlyseedlingestablishmentoftwotropicalmontanecloudforesttreespeciestheroleofnativeandexoticgrasses AT mezaoliverrocioautora earlyseedlingestablishmentoftwotropicalmontanecloudforesttreespeciestheroleofnativeandexoticgrasses |
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KOHA-OAI-ECOSUR:486682024-03-12T12:47:18ZEarly seedling establishment of two tropical montane cloud forest tree species the role of native and exotic grasses Ortega Pieck, Aline autora López Barrera, Fabiola autor 14210 Ramírez Marcial, Neptalí 1963- Doctor autora 5449 García Franco, José G. Doctor autor 14168 Meza Oliver, Rocío autora textengTropical montane cloud forest has been undergoing a drastic reduction because of its widespread conversion to pastures. Once these forests have been cleared exotic grasses are deliberately introduced for forage production. Exotic grass species commonly form monodominant stands and produce more biomass than native grass species, resulting in the inhibition of secondary succession and tree regeneration. The purpose of this study was to assess the effect of native vs. exotic grass species on the early establishment of two native tree seedlings (Mexican alder, Alnus acuminata and Jalapa oak, Quercus xalapensis) on an abandoned farm in central Veracruz, Mexico. Seedling survival and growth were monitored (over 46 weeks) in relation to grass cover and height, and available photosynthetic active radiation (PAR). More seedlings survived in the presence of the native grass Panicum glutinosum than those growing with the exotic grass Cynodon plectostachyus (92% vs. 48%). The causes of seedling mortality varied between species; Q. xalapensis was affected by herbivory by voles but mainly in the exotic grass-dominated stands, whereas A. acuminata seedlings died due to competition with the exotic grass. A. acuminata seedlings increased more in height in the exotic grass-dominated stands (102 ± 7.8 cm) compared to native grass-dominated stands (51 ± 4.7 cm). Grass layer height, cover and available PAR were correlated (Pearson; p < 0.05). In the exotic grass dominated plots, grass layer height was correlated with the relative height growth rates of Q. xalapensis (Pearson; p < 0.05). These results indicate that the exotic grass may be affecting tree regeneration directly (grass competition) and indirectly (higher herbivory). Passive restoration may occur once P. glutinosum dominated pastures are abandoned. However, when C. plectostachyus dominates, introduction of early and mid successional tree seedlings protected against vole damage is needed.Tropical montane cloud forest has been undergoing a drastic reduction because of its widespread conversion to pastures. Once these forests have been cleared exotic grasses are deliberately introduced for forage production. Exotic grass species commonly form monodominant stands and produce more biomass than native grass species, resulting in the inhibition of secondary succession and tree regeneration. The purpose of this study was to assess the effect of native vs. exotic grass species on the early establishment of two native tree seedlings (Mexican alder, Alnus acuminata and Jalapa oak, Quercus xalapensis) on an abandoned farm in central Veracruz, Mexico. Seedling survival and growth were monitored (over 46 weeks) in relation to grass cover and height, and available photosynthetic active radiation (PAR). More seedlings survived in the presence of the native grass Panicum glutinosum than those growing with the exotic grass Cynodon plectostachyus (92% vs. 48%). The causes of seedling mortality varied between species; Q. xalapensis was affected by herbivory by voles but mainly in the exotic grass-dominated stands, whereas A. acuminata seedlings died due to competition with the exotic grass. A. acuminata seedlings increased more in height in the exotic grass-dominated stands (102 ± 7.8 cm) compared to native grass-dominated stands (51 ± 4.7 cm). Grass layer height, cover and available PAR were correlated (Pearson; p < 0.05). In the exotic grass dominated plots, grass layer height was correlated with the relative height growth rates of Q. xalapensis (Pearson; p < 0.05). These results indicate that the exotic grass may be affecting tree regeneration directly (grass competition) and indirectly (higher herbivory). Passive restoration may occur once P. glutinosum dominated pastures are abandoned. However, when C. plectostachyus dominates, introduction of early and mid successional tree seedlings protected against vole damage is needed.Restauración forestalBosque de nieblaEspecies introducidasPastosAlnus acuminataQuercus xalapensisCynodon plectostachyusForest Ecology and Managementhttps://www.sciencedirect.com/science/article/pii/S0378112711000363Disponible para usuarios de ECOSUR con su clave de acceso |