The importance of spatial scale and vegetation complexity in woody species diversity and its relationship with remotely sensed variables
Canto Sansores, Wendy G [autora] | López Martínez, Jorge Omar [autor] | González, Edgar J [autor] | Meave, Jorge A [autor] | Hernández Stefanoni, José Luis [autor] | Macario Mendoza, Pedro A [autor].
Tipo de material: Artículo en línea Tipo de contenido: texto Tipo de medio: computadora Tipo de portador: recurso en líneaTema(s): Tipos de vegetación | Actividades antropogénicas | Sensores remotos | Bosques tropicalesTema(s) en inglés: Vegetation types | Anthropogenic activities | Remote sensing | Tropical forestsDescriptor(es) geográficos: Quintana Roo (México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: ISPRS Journal of Photogrammetry and Remote Sensing. Volumen 216 (October 2024), páginas 142-153. --ISSN: 0924-2716Número de sistema: 64742Resumen:Tipo de ítem | Biblioteca actual | Colección | Signatura | Estado | Fecha de vencimiento | Código de barras |
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Artículos | Biblioteca Electrónica Recursos en línea (RE) | ECOSUR | Recurso digital | ECO40000064742 |
Disponible para usuarios de ECOSUR con su clave de acceso
Plant species diversity is key to ecosystem functioning, but in recent decades anthropogenic activities have prompted an alarming decline in this community trait. Thus, developing strategies to understand diversity dynamics based on affordable and efficient remote sensing monitoring is essential, as well as examining the relevance of spatial scale and vegetation structural complexity to these dynamics. Here, we used two mathematical approaches to assess the relationship between tropical woody species diversity and spectral diversity in a human-modified landscape in two vegetation types differing in their degree of complexity. Vegetation complexity was measured through the fraction of species that concentrate different proportions of the cumulative importance value index. Species diversity was assessed using Hill numbers at three spatial scales, and metrics of spectral heterogeneity, vegetation indices, as well as raw data from Landsat 9 and Sentinel-2 sensors were calculated and analysed through general linear models (GLM) and Random Forest. Vegetation complexity emerged as an important variable in modelling species from remote sensing metrics, indicating the need to model species diversity by vegetation type rather than region. Hill numbers showed different relationships with remotely sensed metrics, in consistency with the scale-dependency of ecological processes on species diversity. Contrary to multiple previous reports, in our study, GLMs produced the best fits between Hill numbers of all orders and remotely sensed metrics. If we are to meet the need of conducting efficient and speedy woody species diversity monitoring globally, we propose modelling this diversity from remotely-sensed variables as an attractive strategy, so long as the intrinsic properties of each vegetation type are acknowledged to avoid under- or overestimation biases. eng