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on eight criteria related to territorial behaviour, general observations and biology
of the species as well as to landscape features (Poirazidis et al., 2006, 2010c).
Breeding territories were differently classified as confirmed or possible. The GIS
approach for estimating raptor territories was particularly effective for strictly ter-
ritorial species like most of the eagles, buzzards, hawks, and falcons (Table 13.2).
Less territorial species, such as the Egyptian Vulture (
Neophron percnopterus
) and
the Short-toed Eagle (
Circaetus gallicus
) demanded a large amount of data to enable
precise territory estimations.
Table 13.2
Summary of the species-specific problems and advantages of the GIS-based
methodology for the estimation of raptor population sizes at local scale (values are scaled from
1
=
not any to 6
=
very high)
Problems with
secretiveness or
late arrival
Frequent key
observations,
high accuracy
Problems with
low territoriality
Total usefulness
GIS method
Species
White-tailed Eagle
4
2
4
4
Golden Eagle
1
2
4
6
Imperial Eagle
2
5
4
4
Lesser spotted Eagle
3
2
5
6
Short-toed Eagle
5
1
4
4
Booted Eagle
2
3
4
5
Egyptian Vulture
6
3
6
5
Common Buzzard
2
1
5
6
Long-legged Buzzard 2
3
5
6
Honey Buzzard
2
5
4
4
Black Kite
6
3
2
3
Marsh Harrier
5
2
2
3
Goshawk
1
4
3
4
Levant Sparrowhawk
2
6
3
3
Sparrowhawk
2
4
3
4
Peregrine Falcon
3
2
5
6
Lanner Falcon
2
2
5
6
Hobby
1
5
3
4
Eurasian Kestrel
1
2
4
6
Black Stork
6
1
4
4
13.8 Case Study 6 - Conservation of Biodiversity in Managed
Forests: An Integrated Approach Using Multi-Function
Forest Services
In this case study
7
we developed a decision-support system to optimise the conser-
vation of biodiversity in managed forests. We investigated timber production and
biodiversity, the main ecosystem services of the Mediterranean forest landscape of
Dadia NP. We produced (1) a series of spatially explicit habitat suitability models
for higher plants, amphibians, small forest birds and raptors and an overall model
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