Chalcostigma stanleyi


To elaborate our model we produced four pseudoreplicas of a locality we placed in the approximate geographical centre of the area of the Chiles-Cumbal Volcanoes Complex. The new points were located at approximate 1-2 km north, east, south and west from the fist pseudolocality, at elevations in the range 3,791-3,964 m.

The habitat suitability model generated in Maxent showed a few sparse areas suitable in climatic terms for this species in the central Central and Eastern Andes. Areas not near Chiles/Cumbal volcanoes complex were excluded from the potential distribution map of this hummingbird.


Regularized training gain is 6.372, training AUC is 1.000, unregularized training gain is 6.950.

Algorithm converged after 260 iterations (1 seconds).

The follow settings were used during the run:

5 presence records used for training.

10005 points used to determine the Maxent distribution (background points and presence points).

Environmental layers used (all continuous): bio10co bio11co bio12co bio13co bio14co bio15co bio16co bio17co bio18co bio19co bio1co bio2co bio3co bio4co bio5co bio6co bio7co bio8co bio9co

Regularization values: linear/quadratic/product: 1.000, categorical: 0.575, threshold: 1.950, hinge: 0.500

Feature types used: linear

responsecurves: true

jackknife: true

maximumiterations: 2000

'Equal Training Sensitivity and Specificity' and 'Equate Entropy of Thresholded and Original Distributions' thresholds and omission rates:

28.337-11.284-Cumulative threshold

0.437-0.061-Logistic threshold

0.001-0.002-Fractional predicted area

0.000-0.000-Training omission rate