Breaking down population density into different components to better understand its spatial variation

Table 3 Estimates of sett cluster density from walked transect surveys of the 13 study sites in France using distance sampling

Study site	D_C.Distance (/km²)	D_C (/km²)	D_C 95% confidence interval^a	Coefficient of variation
A	6.95	5.39	3.08–8.64	27.01
B	6.62	5.50	3.11–9.32	28.01
C	12.80	3.55	2.19–5.24	21.71
D	6.21	5.17	2.96–8.54	27.07
E	10.39	3.17	1.84–4.85	24.44
F	11.30	4.75	2.96–7.09	23.85
G	10.62	2.29	1.28–3.52	25.08
H	7.80	6.42	3.75–10.63	27.72
I	9.42	2.62	1.30–4.36	29.44
J	8.80	3.59	2.09–5.45	24.68
K	18.31	3.79	1.95–6.04	28.80
L	6.70	1.99	0.67–3.78	39.54
M	8.21	4.11	2.26–6.49	25.98

D_C.Distance and D_C correspond respectively to the density of clusters estimated in suitable habitats and corrected for the proportion of suitable habitat at each site
^a2.5% and 97.5% quantiles of the bootstrap estimates (n = 999)

ISSN: 2730-7182