wildtier-informationssystem der länder deutschlandstion (deutschen jagdschutz-verbandes, in short...

Wildtier-Informationssystem der Länder Deutschlands

Results 2005

What is WILD?

The Wildtier-Informationssystem der Länder Deutschlands (WILD) is a na-

tion-wide monitoring program, which collects frequency data and populations

trend of free ranging animals. WILD is a project of the German Hunting Associa-

tion (Deutschen Jagdschutz-Verbandes, in short DJV) started in 2001 and a

permanent element of the long-term environmental assessment effort. Develop-

ment of conservation and sustainable utilization strategies of free ranging ani-

mals are the most important objectives. It will also serve as a base for further

research and for decision making in German hunting and conservation policy.

Data collection in WILD is separated in two parts: animal censuses in selected

areas (reference areas) and populations estimates in as many as possible hunt-

ing districts all over Germany. Support from hunters to the project is voluntarily

and a significant contribution to the conservation of wildlife.

At the moment data is collected for Brown Hare, Red Fox, Badger, Carrion Crow and Partridge and includes the actual counting of the animals and re-

cording of additional factors, that influence population density like landscape

structure, land use and climate. Occurrence and partly abundance of 24 addi-

tional species were recorded for the first time in 2006 (area assessment). Fur-

ther extension and cooperation with other wildlife monitoring efforts in Germany

is imminent.

Results of the yearly census are published in the annual report, which can be

found in the internet: www.jagdnetz.de. This brochure gives a summarized over-

view of the results from 2005.

Brown Hare (Lepus europaeus)

Since 2001 spring and fall population densities are collected consistently in

whole country with spotlight censuses. More than 800 reference areas are al-

ready established and each year nearly 600 of them provide population esti-

mates.

Germany was divided into three large regions to represent the significant distinc-

tions between these areas, which are reflected in different animal densities and

population trends. All results are represented as means.

Northwest Germany (consisting of the federal states of Schleswig Holstein,

Lower Saxony, Bremen, Hamburg and North Rhine-Westphalia) has the highest

population density in all years, with 23,9 hares/100 ha in spring 2005. The den-

sities in Central and South Germany (consisting of the federal states of Baden

Wurttemberg, Bavaria, Hesse, Rhineland-Palatinate and Saarland) are signifi-

cantly lower with 14,6 Hasen/100 ha. The lowest densities can be found in East-

ern Germany (consisting of the federal states of Berlin, Brandenburg, Mecklen-

burg-Western Pomerania, Saxony, Saxony-Anhalt and Thuringia) accumulating

to only 5,4 hares/100 ha.

Brown Hare

Mittelwert(Median)

Die Box umfaßt 50 % der Werte

größter Stichprobenwert

kleinster Stichprobenwert

Mittelwert(Median)




Mittelwert(Median)




Diagram to illustrate the graphical repre-sentation of the results

A second yearly census is carried out in fall, which revealed for Northwest Ger-

many 28,5 Hasen/100 ha, for Central und South Germany 15.7 hares/100 ha

and for East Germany 5,0 hares/100 ha in 2005.

During the period of 2002 to 2005 spring population densities of the brown hare

were rising from 11,0 to 14,5 hares/100 ha on the base of all participating refer-

ence areas. When separated into the three large regions, results were quite

different. In Northwest Germany the densities was rising by 11 %, it stayed

nearly the same in Central and South Germany and with a 17 % increase East

Germany had the highest growth during these years. In the very hot summer of

2003 the countrywide population increase reached the largest level so far with

26,2 % .

180158280 176188271N =

Dichte [Individuen/100 ha Taxationsf läche]

OstenMitte+SüdenNordw esten

100

90

80

70

60

50

40

30

20

10

0

Frühjahr

Herbst

Comparison of spring and fall brown hare population densities in 2005

180158280 186195264 205202230 190157190N =

Dichte [Indiv iduen/100 ha Taxationsf läche]


100

90

80

70

60

50

40

30

20

10

0

2002

2003

2004

2005

Development of brown hare population desities from 2002 to 2005

Spring population densities of brown hare in the reference areas in 2005

Red Fox (Vulpes vulpes)

The countrywide uniform assessment of the fox population was taking place for

the third time within the WILD project. In 2005 fox den density data was avail-

able from more than 350 reference areas. Average den density was 0,3

dens/100 ha, which corresponds to the density of the last years. Lowest den

densities were reported from Northwest Germany.

To calculate average litter densities, den densities are multiplied with a factor to

account for the sex ratio of the species. The resulting average minimum popula-

tion was 0,8 fox/100 ha in spring and 2,3 fox/100 ha in summer, with a mean

litter size of 5 animals.

With the data from 2005 it was possible to evaluate the population trend of red

fox for the first time. Den densities of the red fox from 2003 to 2005 show only

minor fluctuations with no clear trend visible.

Red Fox

12884155N =

Dichte [Gehecke/100 ha]

OstenMitte+SüdenNordwesten

1,6

1,4

1,2

1,0

,8

,6

,4

,2

0,0

Comparison of red fox den densities between the three geographical regions of Germany in 2005

Den density of the red fox in the reference areas in 2005 368295370N =


200520042003

2,0

1,8

1,6

1,4

1,2

1,0

,8

,6

,4

,2

0,0

Development of red fox den densities in all hunting areas from 2003 to 2005

Badger (Meles meles)

Collecting of badger population data is done in connection with the den density

census of the red fox in the same reference areas. Badger dens are found

throughout Germany with the exception of some parts of North Rhine-

Westphalia, Lower Saxony and Schleswig Holstein. Average den density in all

hunting areas in 2005 was 0,1 dens/100 ha. Northwest Germany has considera-

bly lower den densities in comparison to both other regions and the badger is

only present in 60 % of the regions hunting areas. In contrast 80 % of the hunt-

ing areas in East respectively Central and South Germany have badger occur-

rence.

Minimum spring density was determined with 0,2 badger/100 ha and minimum

summer density with 0,3 badger/100 ha nationwide. Actual litter size in 2005

was 3 litter/den, which corresponds to the data from previous years.

Population densities during 2003 and 2005 indicate a insignificant decline in all

participating hunting areas.

Badger

12884156N =



1,2

1,0

,8

,6

,4

,2

0,0

Comparison of badger den densities between the three geographical regions of Germany in 2005

Den densities of the badger in the reference areas in 2005

12884156 1308085 14578147N =



1,0

,9

,8

,7

,6

,5

,4

,3

,2

,1

0,0

2003

2004

2005

Development of badger den densities in the three geographical regions of Ger-many from 2003 to 2005

Carrion and Hooded Crow (Corvus corone)

Carrion and Hooded Crow are both registered within the WILD project since

2003. In 2005 accounts from more than 350 reference areas are analyzed.

Minimum mean pair density is 1 pair/100 ha across the country, with 70 %

breeding pairs. Pair densities in Northwest Germany are 1,9 pair/100 ha and

thus higher than in East respectively Central and South Germany.

The proportion of the hunting areas with no crow pairs at all is 14 % and the

majority of these is situated in the east German states.

Pair densities from 2002 to 2005 remained nearly constant, however East Ger-

many showed a small increase, whereas Central and South Germany displayed

a small decrease.

Pair density of hooded and carrion crow in the reference areas in 2005 12763153 14010298 13591143N =

Dichte [Paare/100ha]


7

6

5

4

3

2

1

0

2003

2004

2005

Development of carrion and hooded crow pair densities in the three geo-graphical regions of Germany from 2003 to 2005

Comparison of carrion and hooded crow densities in the three geographical re-gions of Germany in 2005

12763153N =

Dichte [Paare/100ha]


8

7

6

5

4

3

2

1

0

Carrion Crow

Partridge (Perdix perdix)

Nation-wide assessments of partridge densities are carried out since spring

2002.

Population densities varies highly on the regional level. Similar to the situation in

brown hares, the east German states have a considerably lower partridge den-

sity than the west German states. It is even absent in more than half of the com-

munities, where pair density was evaluated.

The distribution hot-spots of partridge are characterized by atlantic climate (mild

winter) and regions with warm and dry climate (vineyard areas). Here the pair

density minimum average is 1-2 pair/100 ha and in some communities even 7

pair/100 ha were recorded.

Pair densities over the last four years remained stable in those federal states,

which provided state-wide assessments since 2002.

Partridge

Population density of partridge from 2002 - 2005

Comparison of partridge pair densities between different federal states of Ger-many in 2005

94695156542109168426N =

Dichte [Paare/100 ha Offenlandfläche]

ThüringenSachsen-Anhalt

Mecklenb.-VorpommernSaarland

HessenNordrhein-Westfalen

Niedersachsen

7

6

5

4

3

2

1

0

Bundesland Länderbetreuer e-mail Telefon

Baden-Württemberg Dr. M. Pegel [email protected] 07525 / 942341

Bayern Dr. D. van der Sant [email protected] 089 / 990234-23

Berlin Dr. H. Nösel [email protected] 03334 / 65-125

Brandenburg G. Greiser [email protected] 03334 / 65-126

Bremen H. Tempelmann [email protected] 0428 / 2592849

Hamburg M. Willen [email protected] 040 / 447712

Hessen R. Becker [email protected] 06032 / 936116

Mecklenburg-Vorpommern R. Pirzkall [email protected] 03871 / 631216

Niedersachsen Dr. E. Strauß [email protected] 0511 / 856-7620

Nordrhein-Westfalen Dr. H. Schlepper [email protected] 0231 / 2868600

Rheinland-Pfalz F. Voigtländer [email protected] 06727 / 8944-19

Saarland J. Schorr [email protected] 0681 / 31700

Sachsen F. Ende [email protected] 0351 / 4017171

Sachsen-Anhalt O. Thärig [email protected] 039205 / 417570

Schleswig-Holstein Dr. D. Hoffmann [email protected] 04347 / 710729

Thüringen Dr. H. Nösel [email protected] 03334 / 65-125

Example of land use mapping in a hunt-ing district in the federal state of Rhine-land-Palatinate

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