Mapping tree species vulnerability to multiple threats as a guide to restoration and conservation of tropical dry forests

2020 ◽  
Vol 26 (6) ◽  
pp. 3552-3568 ◽  
Author(s):  
Tobias Fremout ◽  
Evert Thomas ◽  
Hannes Gaisberger ◽  
Koenraad Van Meerbeek ◽  
Jannes Muenchow ◽  
...  
Keyword(s):  
Tree Species ◽  
Tropical Dry Forests ◽  
Dry Forests ◽  
Species Vulnerability

scholarly journals Mapping Tree Species Deciduousness of Tropical Dry Forests Combining Reflectance, Spectral Unmixing, and Texture Data from High-Resolution Imagery

Forests ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1234
Author(s):  
Astrid Helena Huechacona-Ruiz ◽  
Juan Manuel Dupuy ◽  
Naomi B. Schwartz ◽  
Jennifer S. Powers ◽  
Casandra Reyes-García ◽  
...  
Keyword(s):  
High Resolution ◽  
Tree Species ◽  
Yucatan Peninsula ◽  
Spectral Unmixing ◽  
Tropical Dry Forests ◽  
Precipitation Gradient ◽  
Dry Forests ◽  
Yucatán Peninsula ◽  
High Resolution Imagery ◽  
Texture Metrics

In tropical dry forests, deciduousness (i.e., leaf shedding during the dry season) is an important adaptation of plants to cope with water limitation, which helps trees adjust to seasonal drought. Deciduousness is also a critical factor determining the timing and duration of carbon fixation rates, and affecting energy, water, and carbon balance. Therefore, quantifying deciduousness is vital to understand important ecosystem processes in tropical dry forests. The aim of this study was to map tree species deciduousness in three types of tropical dry forests along a precipitation gradient in the Yucatan Peninsula using Sentinel-2 imagery. We propose an approach that combines reflectance of visible and near-infrared bands, normalized difference vegetation index (NDVI), spectral unmixing deciduous fraction, and several texture metrics to estimate the spatial distribution of tree species deciduousness. Deciduousness in the study area was highly variable and decreased along the precipitation gradient, while the spatial variation in deciduousness among sites followed an inverse pattern, ranging from 91.5 to 43.3% and from 3.4 to 9.4% respectively from the northwest to the southeast of the peninsula. Most of the variation in deciduousness was predicted jointly by spectral variables and texture metrics, but texture metrics had a higher exclusive contribution. Moreover, including texture metrics as independent variables increased the variance of deciduousness explained by the models from R2 = 0.56 to R2 = 0.60 and the root mean square error (RMSE) was reduced from 16.9% to 16.2%. We present the first spatially continuous deciduousness map of the three most important vegetation types in the Yucatan Peninsula using high-resolution imagery.

scholarly journals Phenology of Tree Species Populations in Tropical Dry Forests of Southeastern Brazil

10.5772/34289 ◽  
2012 ◽  
Author(s):  
Yule Roberta Ferreira Nunes ◽  
Giovana Rodrigues da Luz ◽  
Llian de Lima Brag
Keyword(s):  
Tree Species ◽  
Tropical Dry Forests ◽  
Southeastern Brazil ◽  
Dry Forests

How Tropical Dry Forests Respond To Hurricane Damage

2018 ◽  
Author(s):  
Luis Daniel Avila Cabadilla ◽  
Mariana Álvarez
Keyword(s):  
Tropical Dry Forests ◽  
Dry Forests ◽  
Hurricane Damage

Soil biogeochemistry across Central and South American tropical dry forests

2021 ◽  
Author(s):  
Bonnie G. Waring ◽  
Mark E. De Guzman ◽  
Dan V. Du ◽  
Juan M. Dupuy ◽  
Maga Gei ◽  
...  
Keyword(s):  
Tropical Dry Forests ◽  
South American ◽  
Dry Forests ◽  
Soil Biogeochemistry

scholarly journals Seed dispersal by carnivores in temperate and tropical dry forests

2021 ◽  
Author(s):  
Fabián Alejandro Rubalcava‐Castillo ◽  
Joaquín Sosa‐Ramírez ◽  
José de Jesús Luna‐Ruíz ◽  
Arturo Gerardo Valdivia‐Flores ◽  
Luis Ignacio Íñiguez‐Dávalos
Keyword(s):  
Seed Dispersal ◽  
Tropical Dry Forests ◽  
Dry Forests
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