Table 1.
Regional Habitat Priorities/Crocodile Conservation Units (RHP/CCU) and Regional Research Priorities (RRP) variables and classifiers.
Fig 1.
Omission and predicted area, sensitivity vs 1—Specificity, and suitable habitat threshold obtained from the Species Distribution Model (SDM) of the Orinoco crocodile.
(A) Omission and predicted area indicating the fraction of background predicted, the predicted omission, and the omission on training samples (B) sensitivity vs fractional predicted area, indicating the area under the curve value (AUC) based on the training data and the random prediction. (C) suitable habitat threshold obtained on the basis of the area covered. Notice the change of the shape of the curve at 0.2 and 0.5 are indicative of breaking points of suitable area cover.
Fig 2.
Species Distribution Model (SDM) for the Orinoco crocodile.
SDM depicting: (A) all suitable areas available in both Colombia and Venezuela based on the variables assessed as well as the isocline at 350 m asl and the spatially rarefied geolocations; (B) the suitable area including absence data, the 0.2 threshold area, and all the occurrence data used in this study; (C) the most suitable distribution model under the 0.5 threshold area, highlighting areas inside (yellow) and outside (light green) of the Orinoco basin.
Table 2.
Land-cover categories identified on the Orinoco crocodile SDM.
Fig 3.
Study richness and relative abundance population patterns.
Study richness (number of studies/area) and some relative-abundance population patterns found throughout the Orinoco crocodile range. Notice how research efforts have been localized in just a few areas (e.g., Cojedes River), while others have been essentially neglected (areas with only one study).
Table 3.
Relative abundances of the Orinoco crocodile populations in Venezuela.
Table 4.
Relative abundances of the Orinoco crocodile populations in Venezuela without specific time information.
Table 5.
Regional Habitat Priorities/Crocodile Conservation Units (RHP/CCU) and Regional Research Priorities (RRP).
Fig 4.
Regional Habitat Priorities/Crocodile Conservation Units (RHP/CCU) and Regional Research Priorities (RRP).
RHP/CCU and RRP defined through the Orinoco crocodile range based on current knowledge about the species as well as management actions taking place and relative abundance patterns.