Propithecus deckenii

Animalia, Indriidae, EN

Propithecus deckenii is a medium-sized, white sifaka from western Madagascar. It has a head-body length of 42–48 cm, a tail length of 50–60 cm, a total length of 92–110 cm, and a weight of 3.0–4.5 kg (Tattersall, 1982). The dorsal coat is creamy-white with tints varying from gold to pale brown on the neck, shoulders, back and limbs. The face is black, but usually with a patch of white fur running across it. Bony pockets on either side of the muzzle give this animal a rather blunt-nosed appearance, but not as extreme as in the crowned sifaka (Propithecus coronatus).

Decken’s sifaka is easy to distinguish from other lemurs within its range except for P. coronatus, with which it may partially overlap in limited areas. Propithecus coronatus is also predominantly white, but has a distinctive dark brown to black hood, extending onto the shoulders. \([\dots]\) https://lemursofmadagascar.com

Current distribution

N. of observation used in the models

  N = 90

  Species distribution area

  SDA = 42 463 km\(^2\)

 

  Model performance
ROC OA TSS
Value 1.00 0.93 0.91

Climatic niche

Climatic and altitudinal range

 
temp prec tseas pseas cwd foret alt
Mean 257 1373 1601 124 725 28 188
2.5% 208 1095 1258 105 297 0 6
97.5% 272 1614 2029 140 895 99 1061
Variable importance
GLM GAM RF MaxE ANN mrank rank
temp 0.31 0.33 0.18 0.32 0.41 4.40 6
prec 0.21 0.42 0.26 0.07 0.70 4.20 4
tseas 0.90 0.64 0.44 0.88 0.77 1.40 1
pseas 0.20 0.75 0.13 0.14 0.71 4.00 3
cwd 0.72 0.62 0.15 0.69 0.90 2.60 2
foret 0.19 0.10 0.35 0.42 0.45 4.40 6

Vulnerability to climate change

Full dispersal

  RCP : 85, Year : 2080

 

Zero dispersal

  RCP : 85, Year : 2080

 

Scenarios
RCP Year Disp Area Change
1 45 2080 full 80 980 91
2 45 2080 zero 37 851 -11
3 85 2080 full 124 001 192
4 85 2080 zero 37 443 -12