Table 15.3 List of the 15 models explaining bearded vulture survival with lowest QAICc values.
Age of individuals was grouped into eight age classes, the last grouping 6-year-old birds and older
(see methods). Models referring to 2005 deal with a tipping point in that year, after which API was
in short supply probably affecting survival. Models considering different groupings of age classes
were noted by their first and age class considered; for instance, a model grouping birds of 2 year
and 3 year old was noted as 2 year_3 year. Np = number of identifiable parameters; D i = QAICc
difference value between the best model and model i; w i = weight of model i (Margalida et al.
2014a)
No.
Np
Deviance
QAICc
D i
w i
Hypothesis tested on survival by
time and age
1
28
921.148
979.148
0
0.41
Only two values: before and
after 2005 differently for
juveniles (1 year) and immature
and subadults (2 year_5 year);
for adults, trend with time
2
28
922.572
980.636
1.488
0.19
Temporal trend in survival only
for adults (>5 year old); the two
other age classes considered
have constant survival and
different for juveniles (1 year)
and immatures and subadults
(2 year_5 year)
3
28
923.76
981.823
2.675
0.11
Only two values: before and
after 2005, but differently for
juveniles, immature and
subadults (2 year_5 year) and
adults
4
28
924.045
982.109
2.961
0.09
Two values: before and after
2005 but only for adults; other
age classes had constant survival
but different for juveniles
(1 year) and immature and
subadults (2 year_5 year)
5
28
924.561
982.624
3.476
0.07
Two values: before and after
2005 but only for adults; other
age classes had constant survival
(1 year_5 year)
6
25
931.319
982.965
3.817
0.06
Constant (all age classes the
same survival)
7
27
928.733
984.625
5.477
0.03
Two values: before and after
2005 but only for adults; other
age classes had the same
constant survival
8
27
928.757
984.675
5.527
0.03
Only two values: before and
after 2005 but differently for
juveniles, immature and
subadults (1 year_5 year) and
adults
(continued)
372
A. Margalida
Age of individuals was grouped into eight age classes, the last grouping 6-year-old birds and older
(see methods). Models referring to 2005 deal with a tipping point in that year, after which API was
in short supply probably affecting survival. Models considering different groupings of age classes
were noted by their first and age class considered; for instance, a model grouping birds of 2 year
and 3 year old was noted as 2 year_3 year. Np = number of identifiable parameters; D i = QAICc
difference value between the best model and model i; w i = weight of model i (Margalida et al.
2014a)
No.
Np
Deviance
QAICc
D i
w i
Hypothesis tested on survival by
time and age
1
28
921.148
979.148
0
0.41
Only two values: before and
after 2005 differently for
juveniles (1 year) and immature
and subadults (2 year_5 year);
for adults, trend with time
2
28
922.572
980.636
1.488
0.19
Temporal trend in survival only
for adults (>5 year old); the two
other age classes considered
have constant survival and
different for juveniles (1 year)
and immatures and subadults
(2 year_5 year)
3
28
923.76
981.823
2.675
0.11
Only two values: before and
after 2005, but differently for
juveniles, immature and
subadults (2 year_5 year) and
adults
4
28
924.045
982.109
2.961
0.09
Two values: before and after
2005 but only for adults; other
age classes had constant survival
but different for juveniles
(1 year) and immature and
subadults (2 year_5 year)
5
28
924.561
982.624
3.476
0.07
Two values: before and after
2005 but only for adults; other
age classes had constant survival
(1 year_5 year)
6
25
931.319
982.965
3.817
0.06
Constant (all age classes the
same survival)
7
27
928.733
984.625
5.477
0.03
Two values: before and after
2005 but only for adults; other
age classes had the same
constant survival
8
27
928.757
984.675
5.527
0.03
Only two values: before and
after 2005 but differently for
juveniles, immature and
subadults (1 year_5 year) and
adults
(continued)
372
A. Margalida