Structural and functional characterization of the dry forest in central Argentine Chaco
Here, we studied the composition, structure and functioning of the woody vegetation of a 1000-ha area of the Central Argentine Chaco. First, we identified, through Landsat satellite image processing, three different vegetation classes: two forest types and a savanna. Each class was field surveyed to...
| Egile Nagusiak: | , , |
|---|---|
| Formatua: | Online |
| Hizkuntza: | eng |
| Argitaratua: |
Instituto de Ecología, A.C.
2019
|
| Sarrera elektronikoa: | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2521611 |
| _version_ | 1799769344013500416 |
|---|---|
| author | Benedictto, Mariana N. Gómez-Valencia, Bibiana Torrella, Sebastián A. |
| author_facet | Benedictto, Mariana N. Gómez-Valencia, Bibiana Torrella, Sebastián A. |
| author_sort | Benedictto, Mariana N. |
| collection | MYB |
| description | Here, we studied the composition, structure and functioning of the woody vegetation of a 1000-ha area of the Central Argentine Chaco. First, we identified, through Landsat satellite image processing, three different vegetation classes: two forest types and a savanna. Each class was field surveyed to analyze the composition and structure of the woody plant community. Functioning was assessed through the enhanced vegetation index – a proxy of productivity – obtained from the MODIS sensor. The forest classes showed no differences in composition but some differences in structural attributes, particularly in the density of the dominant tree species in the area, Aspidosperma quebracho-blanco. As expected, the savanna showed less density and basal area of woody plants, with a relative high proportion of tree species seedlings and heliophilous shrubs. The forest class with less density of A. quebracho-blanco presented higher productivity. This could be related to a higher ability of the shrub layer to intercept radiation because shrubs are under an open canopy, as has been noted for early successional stages. Additionally, we found that annual mean productivity for the three classes showed a negative trend in the period 2000-2014. Our results provide valuable information since there are no studies addressing relationships between structural and functional attributes at local level in the Chaco Region. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1611 |
| institution | Madera y Bosques |
| language | eng |
| publishDate | 2019 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-16112022-11-29T22:48:30Z Structural and functional characterization of the dry forest in central Argentine Chaco Caracterización estructural y funcional del bosque seco en el Chaco central argentino Benedictto, Mariana N. Gómez-Valencia, Bibiana Torrella, Sebastián A. Aspidosperma quebracho-blanco Chaco savanna EVI Modis productivity Aspidosperma quebracho-blanco sabana EVI Modis productividad Here, we studied the composition, structure and functioning of the woody vegetation of a 1000-ha area of the Central Argentine Chaco. First, we identified, through Landsat satellite image processing, three different vegetation classes: two forest types and a savanna. Each class was field surveyed to analyze the composition and structure of the woody plant community. Functioning was assessed through the enhanced vegetation index – a proxy of productivity – obtained from the MODIS sensor. The forest classes showed no differences in composition but some differences in structural attributes, particularly in the density of the dominant tree species in the area, Aspidosperma quebracho-blanco. As expected, the savanna showed less density and basal area of woody plants, with a relative high proportion of tree species seedlings and heliophilous shrubs. The forest class with less density of A. quebracho-blanco presented higher productivity. This could be related to a higher ability of the shrub layer to intercept radiation because shrubs are under an open canopy, as has been noted for early successional stages. Additionally, we found that annual mean productivity for the three classes showed a negative trend in the period 2000-2014. Our results provide valuable information since there are no studies addressing relationships between structural and functional attributes at local level in the Chaco Region. Se estudió la composición, estructura y funciones de la vegetación leñosa en un área de 1000 ha en el Chaco central argentino. En primer lugar, a través del procesamiento de imágenes satelitales Landsat, se identificaron tres clases de vegetación diferentes: dos tipos forestales y una sabana. Cada clase fue relevada a campo para analizar la estructura y composición de su comunidad de plantas leñosas. El aspecto funcional fue evaluado a través del Índice de Vegetación Mejorado – un estimador de la productividad – obtenido por el sensor MODIS. Las dos clases de bosque no mostraron diferencias en composición, pero sí en algunos atributos estructurales, particularmente en la densidad de Aspidosperma quebracho-blanco, la especie arbórea dominante. Como se esperaba, la sabana mostró menor densidad y área basal de plantas leñosas, con una proporción relativamente alta de renovales de árboles y arbustos heliófilos. La clase de bosque con menor densidad de A. quebracho-blanco presentó una productividad mayor. Esto puede estar relacionado con una mayor capacidad del estrato arbustivo para captar radiación, dado que se encuentra bajo un dosel más abierto. Por otro lado, se encontró que la productividad media anual para las tres clases de vegetación mostró una tendencia negativa en el período 2000-2014. Los resultados aquí obtenidos proveen valiosa información ya que no hay estudios que aborden relaciones entre estructura y atributos funcionales de la vegetación a escala local en la región Chaqueña. Instituto de Ecología, A.C. 2019-09-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf application/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/e2521611 10.21829/myb.2019.2521611 Madera y Bosques; Vol. 25 No. 2 (2019): Verano 2019 Madera y Bosques; Vol. 25 Núm. 2 (2019): Verano 2019 2448-7597 1405-0471 eng https://myb.ojs.inecol.mx/index.php/myb/article/view/e2521611/1962 https://myb.ojs.inecol.mx/index.php/myb/article/view/e2521611/1951 Derechos de autor 2019 Madera y Bosques |
| spellingShingle | Benedictto, Mariana N. Gómez-Valencia, Bibiana Torrella, Sebastián A. Structural and functional characterization of the dry forest in central Argentine Chaco |
| title | Structural and functional characterization of the dry forest in central Argentine Chaco |
| title_full | Structural and functional characterization of the dry forest in central Argentine Chaco |
| title_fullStr | Structural and functional characterization of the dry forest in central Argentine Chaco |
| title_full_unstemmed | Structural and functional characterization of the dry forest in central Argentine Chaco |
| title_short | Structural and functional characterization of the dry forest in central Argentine Chaco |
| title_sort | structural and functional characterization of the dry forest in central argentine chaco |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2521611 |
| work_keys_str_mv | AT benedicttomarianan structuralandfunctionalcharacterizationofthedryforestincentralargentinechaco AT gomezvalenciabibiana structuralandfunctionalcharacterizationofthedryforestincentralargentinechaco AT torrellasebastiana structuralandfunctionalcharacterizationofthedryforestincentralargentinechaco AT benedicttomarianan caracterizacionestructuralyfuncionaldelbosquesecoenelchacocentralargentino AT gomezvalenciabibiana caracterizacionestructuralyfuncionaldelbosquesecoenelchacocentralargentino AT torrellasebastiana caracterizacionestructuralyfuncionaldelbosquesecoenelchacocentralargentino |
