Black Bear Reintroduction Project 2000-2001 Matt Schroeder, Trinia Bergman, and Joe Sudbrink Augusta...
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Transcript of Black Bear Reintroduction Project 2000-2001 Matt Schroeder, Trinia Bergman, and Joe Sudbrink Augusta...
BlackBear
ReintroductionProject
2000-2001Matt Schroeder, Trinia
Bergman, and Joe Sudbrink
Augusta HS
•Over the past six years the DNR has been trying to reintroduce orphan bear cubs found around the state.
•They are reintroduced into the Eau Claire County forest.
•When orphans are found they’re taken to the Mackenzie Center were they can be raised in isolation.
•To find out if they establish normal patterns and stay away from humans.
•Then we analyzed the information and made home range maps and charts on there habitat use.
•Local Schools have been involved in tracking the bears for six years.
•This year our job was to track them and map their locations, calculate ranges and habitat use.
We track the bears using radio telemetry as soon as they come out of their den in spring until they den in the winter.
We get a good location on the bear by taking three different readings. Wherever they intersect is the bears location.
Accuracy test
•How accurate are the bear locations we map compared to the exact location of the bear?•We put six collars out at field research station.
•We used our telemetry to map the collars like we would a bear. •We plugged our points into ArcView and measured the distances from our points to the exact locations of the collars.
•On the average we were accurate to within .25 miles of the true locations.
•The Animal Movement Analyst is used as an Arc View extension. Arc View is the most widely used GIS throughout the world.
•We plot our data using ArcView and calculate home ranges using the Animal Movement Analysis extension from Alaskan Fish and Wildlife.
The harmonic mean home range method is a technique that is especially useful in determining animal activity centers.
Kernal Home Range
• The 95% Contours are the area the animal actually uses.
• The 50% contours are considered the core area of animal activity.
• Comparisons between animals are best done using the 50% contour data.
Bear 50% KHR insquare miles
Type
HorseCreek .82 ReintroducedCoonFork 2.13 ReintroducedHumbird 8.08 Reintroduced
Ludington 5.59 Natural
Jack PineForest-WetlandRed PineAg. CornShrublandOakAspenGrasslandWetlandOpen WaterBroad-leaved DeciduousDeciduous/Coniferous
32%
8% 8%
24%
8%4%
2%6%
Percentage of Data Points in Various Vegetation Categories - Coon Fork Bear
2%
32%
Broad Leaved-Deciduous
Deciduous-Coniferous
Oak
Aspen
Red Pine
Jackpine
Ag. Forage Crops
Ag. Other Row/Crops
Ag. Corn
Wetland
Forested Wetland
Percentage of Data Points in Various Vegetation Categories- Humbird Bear 35%
17%16%
3%
2%
1%
8%
5%
2% 5% 6%
Jackpine
Broad leave-Deciduous
Oak
Red pine
Foested Wetland
Wetland
Deciduous/Coniferous
Grassland
Ag. Corn
Percentage of Data Points in Various Vegetation Categories
Horse Creek Bear
34%5%
7%
18%
2%5%
2% 2%25%
Aspen
Jackpine
Broad leavedDeciduousOak
Redpine
Forest-Wetland
Shrubland
Wetland
5%
5%
5%
3%3% 3%8%
65%
Percentage of Data Points in Various Vegetation Categories - Ludington Bear
65%
Humbird Bear
0
10
20
30
40
50
60
14 March - 02 June, 1999 03 June - 31 July, 1999 01 August - 03 September,1999
04 September - 27 December,1999
Time of Year
Lo
cati
on
by
Per
cen
tag
e
Ludington Bear
0
10
20
30
40
50
60
70
80
90
14 March - 02 June, 1999 03 June - 31 July, 1999 01 August - 03 September,1999
04 September - 27 December,1999
Time of Year
Lo
cati
on
by
Per
cen
tCoon Fork Bear
0
5
10
15
20
25
30
35
40
45
14 March - 02 June, 1999 03 June - 31 July, 1999 01 August - 03 September,1999
04 September - 27 December,1999
Time of Year
Lo
cati
on
By
Per
cen
t
Horse Creek Bear
0
10
20
30
40
50
60
14 March - 02 June, 1999 03 June - 31 July, 1999 01 August - 03 September,1999
04 September - 27 December,1999
Time of Year
Lo
cati
on
by
Per
cen
t
Humbird Female Luddington Female
Coonfork Male Horsecreek Female3/99-6/3/99 6/4/99-8/3/99 8/99 9/99-12/99
Humbird Female
3/00-6/3/00 6/4/00-8/3/00 8/00 9/99-12/00
3/99-6/3/99 6/4/99-8/3/99 8/99 9/99-12/99 3/00-6/3/00 6/4/00-8/3/00 8/00 9/00-12/00
0
2 0
4 0
6 0
1 4 M a rc h -
0 2 Ju n e ,
1 9 9 9
0 3 Ju n e - 3 1
Ju ly, 1 9 9 9
0 1 A u g u st - 0 3
S e p te mb e r,
1 9 9 9
0 4
S e p te mb e r -
2 7
Broad LeavedDeciduous
Deciduous/Coniferous
Oak
Aspen
Jackpine
Ag. Forage Crops
Ag. Other RowCrops
Ag. Corn
Wetland
ForesetedWetland
Shrubland
Open Water
Grassland
Bear Locations by Vegetation Type and Time of Year
When the bears come out of their dens in the spring, we want to track them right away, and keep tracking them until they den next winter.