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Table 2 Overview of results investigating within- and between-group competition in Bwindi gorillas inferred from space use parameters across several spatial and temporal scales

From: Using long-term ranging patterns to assess within-group and between-group competition in wild mountain gorillas

Predictor variable

Group size

Local gorilla population densitye

Intergroup encounter (yes/no)

Previous use by neighboring gorilla groups

Number of males

Core area (yes/no)

Response variable

 Daily travel distancea

No

No

Yes

–

–

 

 Monthly home range sizea

No

Yes

No

–

–

 

 Revisit frequency to each part of the annual home rangea, c

Yes

Yes

No

–

–

 

 Annual home range size

Yes

–

–

–

  

 Annual home range fidelity

Yes

–

–

–

–

 

 Annual home range exclusivity

Yes

–

–

–

Yes

Yes

 Utilization of areasb,d

–

–

–

Yes

–

 
  1. aTaken from Seiler et al. [54]
  2. bTaken from Seiler et al. [26]
  3. cCorresponds to the number of times that each group of gorillas (n = 13) entered each 500 × 500 m grid cell within a group’s home range during a one year study period
  4. dCorresponds to the distance travelled by each gorilla group (n = 10) in each 500 × 500 m grid cell during a one year study period
  5. eThis variable represents the weighted size of the Bwindi mountain gorilla population except the group. Therefore, the larger this estimate, the more neighboring gorillas can be found near a group