Status, investigation and conservation of the Lesser Spotted Eagle in Germany Torsten Langgemach
Photo: D. Nill
Fotos
Photo: P. Wernicke
Fotos
Photo: T. Blohm
Fotos
Photo: T. Langgemach
N
100
0
Dichte des Schreiadlers in BP/100 km²
Population trend in Germany
140
120
100
80
60
40
20
Decline: 19 %
0 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
100
Breeding performance in Germany 1 0,9 0,8 0,7 0,6 MV
0,5
BB
0,4 0,3 0,2
Total: 0,55 juv./terr. pair, n=1936 broods
0,1
20 12
20 11
20 10
20 09
20 08
20 07
20 06
20 05
20 04
20 03
20 02
20 01
20 00
19 99
19 98
19 97
19 96
19 95
19 94
19 93
0
Current threats
Photo: T. Langgemach
Sinking groundwater tables
Current threats
Increasing forestry intensity Photo: T. Langgemach
Current threats
Touristic development of formerly remote areas Photo: T. Langgemach
Loss of grassland and set-asides Photo: T. Langgemach
Energy crops with little food and food availability Photo: T. Langgemach
Increasing maize area in Brandenburg Photo: T. Langgemach
Habitat alteration and collisions due to wind turbines
Photo: T. Krumenacker
624 Wind turbines
3 km more or less save but home ranges are even > 6 km
Photo: T. Krumenacker
Monitoring and Science
• Distribution and population data
Photo: P. Wernicke
Monitoring and Science
• Distribution and population data • Reconstruction of the decline (Meyburg et al. 2004)
Photo: P. Wernicke
Monitoring and Science
• Distribution and population data • Reconstruction of the decline • Habitat analysis (Langgemach et al. 2001, Scheller & Köpke 2009)
Photo: P. Wernicke
Photo: P. Wernicke
Dichte an BundesstraĂ&#x;en (m/km2) mit 2) around zunehmendem Abstand Schreiadlerrevieren Density of main roads (m/kmvon LSE Nests (n=27) (n=27) 140 120 100 80 60 40 20 0 0
Photo: P. Wernicke
500
1000
1500
2000
2500
3000
BB
D. ges.
Dichte an Stromleitungen (m/km2) mit 2) around LSE Nests (n=27) Density of power lines (m/kmvon zunehmendem Abstand Schreiadlerrevieren (n=27) 600 500 400 300 200 100 0 0
500
1000
1500
2000
2500
3000
Photo: P. Wernicke
Monitoring and Science
• • • •
Distribution and population data Reconstruction of the decline Habitat analysis Food composition (Scheller & Meyburg 1996, Pschorn unpubl.)
Photo: P. Wernicke
BB
D. ges.
Photo: T. Krumenacker
Monitoring and Science
• • • • • •
Distribution and population data Reconstruction of the decline Habitat analysis Food composition Migration / threats on the flyways Spacing in the breeding area (Meyburg et al., several papers)
Photo: P. Wernicke
Monitoring and Science
Home range of an adult male – 3 and 6 km circle, (Langgemach & Meyburg 2011)
Photo: P. Wernicke
Monitoring and Science
• • • • • • •
Photo: P. Wernicke
Distribution and population data Reconstruction of the decline Habitat analysis Food composition Migration / threats on the flyways Spacing in the breeding area Genetics (Helbig et al. 2005, Meyburg et al. 2007)
Monitoring and Science
• • • • • • • •
Distribution and population data Reconstruction of the decline Habitat analysis Food composition Migration / threats on the flyways Spacing in the breeding area Genetics Population model (Böhner & Langgemach
2004, Langgemach & Böhner 2011)
Photo: P. Wernicke
Simulation of the Brandenburg Population Scenario 1: more offspring 70
60 % 63 % 67 % 70 %
Individuen:
60 50 40 30 20 0
5
10
15 Jahre
20
25
Monitoring and Science
• • • • • • • • •
Photo: P. Wernicke
Photo: G. Grilli
Distribution and population data Reconstruction of the decline Habitat analysis Food composition Migration / threats on the flyways Spacing in the breeding area Genetics Population model Colour-ringing
Monitoring and Science
• • • • • • • • • •
Distribution and population data Reconstruction of the decline Habitat analysis Food composition Migration / threats on the flyways Spacing in the breeding area Genetics Population model Colour-ringing Toxicology (Langgemach et al. 2010)
Photo: P. Wernicke
Basic conservation target: nest-sites!
1) Protection zones around eyries 2) Care takers for each territory
Photo: P. Wernicke
Protection Zones
100 m
300 m
Photo: P. Wernicke
Nest-site Care Takers
• Monitoring of each territory (occupation, reproduction, problems) • Cooperation with land-owners, land-users, foresters, conservation authorities • Nest-site protection <==> interests of land-users • “First aid” in case of incidents • Annual report to the Brandenburg State Agency for Environment • Expenditures are paid for Photo: P. Wernicke
Conservation together with the forestry
• Water management • Management of disturbances • Restricted forestry • Special LSE chapter in the forestry guidelines • LSE meetings • “LSE forest areas” (Scheller 2008)
Photo: P. Wernicke
LSE Conservation Projects • Testing and development project “Securing and optimization of LSE habitats in M–WP” (2007-15) • Large-scale conservation project “Forests in North Pomerania” (M W-P) (first phase 2010-11) • LIFE-Project “Improvement of breeding and feeding habitats for LSE, Corncrake and Aquatic Warbler in the SPA SchorfheideChorin” (BB) (2012-17) • LSE Management plan for all breeding territories in BB (in preparation) • Project “Nestling Management in Brandenburg” (since 2004)
Nestling Management
Photo: P. Sรถmmer
Nestling Management
Photo: T. Langgemach
Nestling Management
Photo: P. Sรถmmer / K. Graszynski
Fostering 2004-08
Nestling Management
Hacking 2009-13 Photo: K. Graszynski
Nestling Management
Increase of breeding performance (%) 350
300
+ 77 juv. + 65,4 %
250
200
150
100 50
0 2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Photo: P. Wernicke
Nestling Management
Population trend in Brandenburg
Many thanks for nice photos to Torsten Blohm Kai Graszynski, Thomas Krumenacker, Dietmar Nill, Paul Sรถmmer and Peter Wernicke for steady good cooperation and contributions from Mecklenburg Western Pomerania to Wolfgang Scheller Photo: D. Nill
Photo: D. Nill