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Predator-Prey:  Results

THE STUDY

RESEARCHERS

RESULTS

PUBLICATIONS

PHASE 1 (2009-2011)

Carnivore Captures

Black bear capture summary Bobcat capture summary Wolf capture summary Coyote capture summary

Den Checks and Cub Production

Bear den checks

Predation Investigation (Cluster) Results

Because we investigated a different number of clusters each year, the summary in the figures below display a scaled percentage axis where the red portion of the bar represents the percent of clusters with a fawn predation and the black portion of the bar displays the percent of clusters without a fawn predation. The value in white within each red or black bar displays the actual number of clusters with or without a fawn predation, respectively.

Black bear cluster summary Bobcat cluster summary

Wolf cluster summary Coyote cluster summary

Examples of Carnivore Space Use

Black bear home range

Example bear home ranges using 95% fixed kernel density. The male bear (BB38) collared during 17 June -9 December 2010 had a home range size of 153.8 km2 (59.4 mi2). The female bear (BB14) collared during 23 February-13 December 2010 had a home range size of 30.5 km2 (11.8 mi2). The disjoint areas in the home ranges (smaller polygons) are present because the individuals at most had only minimal use of areas outside the shaded polygons.

Bobcat home range

Example bobcat home range using 95% fixed kernel density estimation techniques. This male bobcat (BC08) was collared during 10 May-6 September 2011 and had a home range size of 58 km2 (22 mi2).  The disjoint area in the home range (smaller polygons) is present because the individuals at most had only minimal use of areas outside the shaded polygons.

Wolf home range

Example wolf home range using 95% fixed kernel density. This female wolf (WO10) collared during 1 May-6 September 2011 had a home range size of 112 km2 (mi2). The disjoint areas in the home range (smaller polygons) are present because the individual at most had only minimal use of areas outside the shaded polygons.

Coyote home range

Example coyote home ranges using 95% fixed kernel density. The male coyote (CO23) collared during 1 May-2 September 2011 had a home range size of 10 km2 (4 mi2). The female coyote (CO26) collared during 1 May-2 Sep 2011 had a home range size of 50 km2 (19 mi2). The disjoint areas in the home ranges (smaller polygons) are present because the individuals at most had only minimal use of areas outside the shaded polygons.

White-tailed Deer (Odocoileous virigianus)

Captures

Deer captured/collared

Annual Survival Results

Collared deer survival

Survival estimates do not include animals censored due to unknown status (e.g., radio-collar failure).

Cause-specific Mortality

Fawn mortality Adult female deer mortality

Deer Density

Deer density

Example of White-tailed Deer Space Use

White-tailed deer home range

Example white-tailed deer home ranges using 95% fixed kernel density. The doe (D111) was collared during 10 May 2010-29 April 2011 and had a home range size of 13 km2 (5 mi2) The disjoint areas in the home ranges (smaller polygons) are present because the individuals at most had only minimal use of areas outside the shaded polygons. Her male fawn (F052) was collared from birth on 20 May to 14 July 2010 when the fawn was killed by a bobcat. During this period the fawn had a home range of 3 km2 (1.2 mi2).

PHASE 2 (2013-2015)

Carnivore Captures

Black Bear Capture SummaryWolf Capture Summary

Coyote Capture Summary

Den Checks and Cub Production

Den checks and cub production

Predation Investigation (Cluster) Results

Because we investigated a different number of clusters each year, the summary in the figures below display a scaled percentage axis where the red portion of the bar represents the percent of clusters with a fawn predation and the black portion of the bar displays the percent of clusters without a fawn predation. The value in white within each red or black bar displays the actual number of clusters with or without a fawn predation, respectively.

Predation Investigation (Cluster) Results - Black Bear Predation Investigation (Cluster) Results - Bobcat Predation Investigation (Cluster) Results - Wolf Predation Investigation (Cluster) Results - Coyote

Example of Carnivore Space Use

Black bear home range

Example bear home ranges using 95% fixed kernel density. The male bear (BB146) was collared during 6 March-8 September 2014 and had a home range size of 556 km2 (214 mi2). Female bear (BB112) was collared during16 February-3 October 2013 and had a home range size of 9 km2 (4 mi2).

Bobcat home range

Example bobcat home ranges using 95% fixed kernel density estimation techniques. The male bobcat (BC106) was collared during14 March-8 October 2014 and had a home range size of 158 km2 (61 mi2). The female bobcat (BC103) was collared during18 March-29 August 2013 and had a home range of 27 km2 (10 mi2).

Wolf home range

Example wolf home ranges using 95% fixed kernel density. The male wolf (WO105) collared during10 May-08 September 2014 had a home range size of 155 km2 (60 mi2). The female wolf (WO108) collared during 20 June-23 July 2014 had a home range size of 343 km2 (132 mi2). The disjoint areas in the home range (smaller polygons) are present because the individuals at most had only minimal use of areas outside the shaded polygons.

Coyote home range

Figure 6: Example coyote home ranges using 95% fixed kernel density. The male coyote (CO115) was collared during16 May-29 October 2015 and had a home range size of 58 km2 (22 mi2). The female coyote (CO110) collared during 29 May-27 September 2014 had a home range size of 103 km2 (40 mi2). The disjoint areas in the home range (smaller polygons) are present because the individuals at most had only minimal use of areas outside the shaded polygons.

White-tailed Deer (Odocoileous virigianus)

Captures

Deer captured/collared

Annual Survival

Collared Deer Survival

Survival estimates do not include animals censored due to unknown status (e.g., radio-collar failure).

Cause-specific Mortality

Adult Female Deer Mortality Fawn Deer Mortality

Deer Density

Deer Density

PHASE 3 (2017-2019)

coming soon

THE STUDY

RESEARCHERS

RESULTS

PUBLICATIONS

Recent News

Carnivores avoid rush hour by taking to roads at night

November 17, 2021

This article was published by Else DeFranco in Mongabay. https://news.mongabay.com/2021/11/carnivores-avoid-rush-hour-by-taking-to-roads-at-night/ Large carnivores avoid people by steering clear of roads during the day, … [Read More...]

Detection dogs sniff out predator kills

November 1, 2021

This article was published in Wildlife Professional November/December 2021 issue. https://wildlife.org/the-november-december-issue-of-the-wildlife-professional-2/   … [Read More...]

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Camp Fire Program in Wildlife Conservation
State University of New York
College of Environmental Science and Forestry
1 Forestry Drive
Syracuse, New York 13210 USA

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