Propithecus diadema

Animalia, Indriidae, CR

Propithecus diadema is the largest of the sifakas, and rivals the indri for the title of largest living lemur. It has a head-body length of 50–55 cm, a tail length of 44–50 cm, an overall length of 94–105 cm, and a weight of 6.0–8.5 kg (Glander et al., 1992; Powzyk, 1996; Smith and Jungers, 1997; Lehman et al., 2005a; K. Glander, pers. comm.). Comparing maximum weights for the largest diademed sifakas and the largest indris, it appears that the largest indris exceed the largest diademed sifakas in size by a kilogram or less, so these two species are quite similar in size. Propithecus diadema is also one of the most colorful and attractive of all the lemurs. Its coat is long and silky. The forehead, cheeks and throat are white, and a black crown may extend down the nape of the neck. The muzzle is short, the dark gray to black face is bare, and the eyes are reddish-brown. The shoulders and upper back are slate-gray, the lower back lightening to silver-gray. \([\dots]\) https://lemursofmadagascar.com

Current distribution

N. of observation used in the models

  N = 93

  Species distribution area

  SDA = 42 077 km\(^2\)

 

  Model performance
ROC OA TSS
Value 0.99 0.93 0.86

Climatic niche

Climatic and altitudinal range

 
temp prec tseas pseas cwd foret alt
Mean 196 1757 2486 76 67 74 933
2.5% 162 1188 2069 46 5 0 261
97.5% 227 2580 2758 99 200 100 1720
Variable importance
GLM GAM RF MaxE ANN mrank rank
temp 0.36 0.13 0.36 0.38 0.21 3.90 4
prec 0.30 0.34 0.15 0.39 0.21 4.20 5
tseas 0.21 0.39 0.36 0.34 0.36 3.30 3
pseas 0.14 0.19 0.19 0.03 0.33 5.20 6
cwd 0.39 0.75 0.31 0.20 0.79 2.40 2
foret 0.35 0.36 0.53 0.74 0.46 2.00 1

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 31 845 -24
2 45 2080 zero 31 385 -25
3 85 2080 full 17 201 -59
4 85 2080 zero 17 081 -59