Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences
The dynamics that the structure and diversity of the vegetation follow in a site after suffering a disturbance is an indicator of the resilience of the affected ecosystem. Therefore, the floristic composition and changes in plant succession were analyzed according to the chronosequence of different...
| Main Authors: | , , , , |
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| Format: | Online |
| Language: | spa |
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Instituto de Ecología, A.C.
2022
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| Online Access: | https://myb.ojs.inecol.mx/index.php/myb/article/view/2245 |
| _version_ | 1799769419431280640 |
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| author | Ruiz González, Miguel Ángel Campos Angeles, Gisela Virginia Reyes Hernández, Valentín José Rodríguez Ortiz, Gerardo Enríquez del Valle, José Raymundo |
| author_facet | Ruiz González, Miguel Ángel Campos Angeles, Gisela Virginia Reyes Hernández, Valentín José Rodríguez Ortiz, Gerardo Enríquez del Valle, José Raymundo |
| author_sort | Ruiz González, Miguel Ángel |
| collection | MYB |
| description | The dynamics that the structure and diversity of the vegetation follow in a site after suffering a disturbance is an indicator of the resilience of the affected ecosystem. Therefore, the floristic composition and changes in plant succession were analyzed according to the chronosequence of different disturbances, in a pine-oak forest in southern Oaxaca, Mexico. Selective sampling was used, 28 sampling sites of 400 m2 were established, in which a census of all vascular individuals was carried out during the dry and rainy seasons of 2018. Alpha and beta diversity were estimated and analyzed; the vertical and horizontal structure in all the chronosequences: 1) fires, (IF), occurred one (IF-1), five (IF-5) and six (IF-6) years ago; 2) farmland with agricultural fallow, (DA), eight (DA-8) and 20 years (DA-20); 3) free grazing (PA) and, 4) a reference area, without intervention (C1). The highest richness (89) was recorded during the rainy season (F = 0.0154) in an area with agricultural fallow for 20 years. In the area burned a year earlier, the lowest diversity Shannon=1.26 and Shannon=1.60 was observed in both seasons. The highest importance value index (86.55%) was calculated for Pinus lawsonii Roezl in the area burned six years ago. The disturbance caused by fire is the one that caused the greatest damage to the structure and diversity of the vegetation, but it was also the one in which the vegetation appeared in less time after it. The floristic composition varied according to the type, severity and time elapsed after the disturbance, while the richness of species was related to the plant structure in the site, which determines the microenvironmental conditions. The results are useful for implementing restoration and conservation measures. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-2245 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-22452023-03-03T23:04:12Z Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences Estructura y diversidad vegetal en un bosque de pino encino con disturbios en diferentes cronosecuencias Ruiz González, Miguel Ángel Campos Angeles, Gisela Virginia Reyes Hernández, Valentín José Rodríguez Ortiz, Gerardo Enríquez del Valle, José Raymundo temperate forest herbaceous fire diversity index grazing regeneration bosque templado herbáceas incendio índices de diversidad pastoreo regeneración The dynamics that the structure and diversity of the vegetation follow in a site after suffering a disturbance is an indicator of the resilience of the affected ecosystem. Therefore, the floristic composition and changes in plant succession were analyzed according to the chronosequence of different disturbances, in a pine-oak forest in southern Oaxaca, Mexico. Selective sampling was used, 28 sampling sites of 400 m2 were established, in which a census of all vascular individuals was carried out during the dry and rainy seasons of 2018. Alpha and beta diversity were estimated and analyzed; the vertical and horizontal structure in all the chronosequences: 1) fires, (IF), occurred one (IF-1), five (IF-5) and six (IF-6) years ago; 2) farmland with agricultural fallow, (DA), eight (DA-8) and 20 years (DA-20); 3) free grazing (PA) and, 4) a reference area, without intervention (C1). The highest richness (89) was recorded during the rainy season (F = 0.0154) in an area with agricultural fallow for 20 years. In the area burned a year earlier, the lowest diversity Shannon=1.26 and Shannon=1.60 was observed in both seasons. The highest importance value index (86.55%) was calculated for Pinus lawsonii Roezl in the area burned six years ago. The disturbance caused by fire is the one that caused the greatest damage to the structure and diversity of the vegetation, but it was also the one in which the vegetation appeared in less time after it. The floristic composition varied according to the type, severity and time elapsed after the disturbance, while the richness of species was related to the plant structure in the site, which determines the microenvironmental conditions. The results are useful for implementing restoration and conservation measures. La dinámica que siguen la estructura y diversidad de la vegetación en un sitio después de sufrir un disturbio es un indicador de la resiliencia del ecosistema afectado. En este estudio se analizaron la composición florística y los cambios en la sucesión vegetal de acuerdo con la cronosecuencia de diferentes disturbios, en un bosque de pino-encino del Sur de Oaxaca, México. Se usó un muestreo selectivo estableciendo 28 sitios de muestreo de 400 m2, en los cuales se realizó un censo de todos los individuos vasculares durante las temporadas de estiaje y lluvias de 2018. Se estimaron y analizaron la diversidad alfa y la beta, así como la estructura vertical y horizontal en todas las cronosecuencias: 1) incendios (IF) ocurridos hace un año (IF-1), cinco años (IF-5) y seis años (IF-6); 2) tierras de cultivo con descanso agrícola (DA) de ocho años (DA-8) y 20 años (DA-20); 3) libre pastoreo (PA) y 4) una zona de referencia, sin intervención (C1). La mayor riqueza (89) se registró durante la temporada de lluvias (F = 0.0154) en un área con descanso agrícola durante 20 años. En el área con incendio ocurrido un año antes se observó la diversidad más baja: Shannon = 1.26 y Shannon = 1.60 en ambas temporadas. El índice de valor de importancia más alto (86.55%) fue calculado para Pinus lawsonii Roezl en el área con incendio ocurrido seis años atrás. El disturbio ocasionado por fuego fue el que causó mayor daño a la estructura y diversidad de la vegetación, sin embargo, también fue en el que la vegetación reapareció en menor tiempo. La composición florística varió de acuerdo con el tipo, severidad y tiempo transcurrido después del disturbio, mientras que la riqueza de especies se relacionó con la estructura vegetal en el sitio, que determina las condiciones microambientales. Los resultados son útiles para la aplicación de medidas de restauración y conservación. Instituto de Ecología, A.C. 2022-07-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/2245 10.21829/myb.2022.2812245 Madera y Bosques; Vol. 28 No. 1 (2022): Spring 2022; e2812245 Madera y Bosques; Vol. 28 Núm. 1 (2022): Primavera 2022; e2812245 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/2245/2401 https://myb.ojs.inecol.mx/index.php/myb/article/view/2245/2429 10.21829/myb.2019.253812 10.21829/myb.2019.253896 http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Ruiz González, Miguel Ángel Campos Angeles, Gisela Virginia Reyes Hernández, Valentín José Rodríguez Ortiz, Gerardo Enríquez del Valle, José Raymundo Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences |
| title | Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences |
| title_full | Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences |
| title_fullStr | Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences |
| title_full_unstemmed | Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences |
| title_short | Vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences |
| title_sort | vegetal structure and diversity in a pine-oak forest with disturbances in different chronosequences |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/2245 |
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