Habitat Suitability Modeling of Rare Turkeybeard (Xerophyllum asphodeloides) Species in the Talladega National Forest, Alabama, USA

V Bektas, P Bettinger, N Nibbelink, J Siry, K Merry… - Forests, 2022 - mdpi.com
V Bektas, P Bettinger, N Nibbelink, J Siry, K Merry, KA Henn, J Stober
Forests, 2022mdpi.com
This study focused on the rare and threatened plant species eastern turkeybeard
(Xerophyllum asphodeloides (L.) Nutt.) and its presence or absence in the Talladega
National Forest in Alabama, USA. An ensemble suitable habitat map was developed using
four different modeling methods (MaxEnt, Generalized Linear Model, Generalized Additive
Model, and Random Forest). AUC evaluation scores for each model were 0.99, 0.96, 0.98,
and 0.99, respectively. Biserial correlation scores for models ranged from 0.71 (GLM) to 0.94 …
This study focused on the rare and threatened plant species eastern turkeybeard (Xerophyllum asphodeloides (L.) Nutt.) and its presence or absence in the Talladega National Forest in Alabama, USA. An ensemble suitable habitat map was developed using four different modeling methods (MaxEnt, Generalized Linear Model, Generalized Additive Model, and Random Forest). AUC evaluation scores for each model were 0.99, 0.96, 0.98, and 0.99, respectively. Biserial correlation scores for models ranged from 0.71 (GLM) to 0.94 (RF). The four different models agreed suitable habitat was found to cover 159.57 ha of the land. The ground slope variable was the most contributive variable in the MaxEnt and RF models and was also significant in the GLM and GAM models. The knowledge gained from this research can be used to establish and implement habitat suitability strategies across the Talladega National Forest and similar ecosystems in the southern United States.
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