Survival, Abundance, and Capture Rate of Eastern Cottontail Rabbits in an Urban Park

Survival, Abundance, and Capture Rate of Eastern Cottontail Rabbits in an Urban Park

Victoria M. Hunt1

Seth B. Magle2

Chino Vargas2

Alison W. Brown2

Eric V. Lonsdorf2

Allison B. Sacerdote2

Evan J. Sorley2

Rachel M. Santymire2

Survival, abundance, and capture rate of eastern cottontail rabbits in an urban park

Journal: Urban Ecosystems

1University of Illinois at Chicago

1845 W Taylor Street, Chicago, IL, 60607

2Lincoln Park Zoo

22001 N Clark Street, Chicago, IL, 60614, USA

Corresponding author: Victoria M. Hunt

Phone 312/206-0036

Fax 630/972-4496

Supplemental table 1 Competing recapture models generated in the program MARK (model POPAN) using eastern cottontail rabbit recapture histories obtained in 2010, 2011 and 2012 in Lincoln Park, Chicago, Illinois. The MLogitlink function is used for the probability of entrance (b; PENT) parameters. Unlike the other model parameters, super-population can exceed 1, and therefore a Log link function is used for N. Models are arranged in descending order of best fit as determined by corrected Akaike information criterion (AICc). PENT = probability of entrance. Var = variance estimation method

Model / Parameters / AICc / Var. / No. par.
Constant / Variable by time
(t)p(t)b(t) / Survival, Capture, PENT / 0 / 2nd Part / 5
(.)p(.)b(t) / Survival, Capture / PENT / 3.4 / 2nd Part / 4
(t)p(t)b(t) / Survival, Capture, PENT / 6.6 / Hessian / 8
(.)p(t)b(.) / Survival, PENT / Capture / 110337 / 2nd Part / 4
(t)p(.)b(.) / Capture, PENT / Survival / 110337 / 2nd Part / 4
(.)p(.)b(.) / Survival, Capture, PENT / 110339 / 2nd Part / 3

Supplemental table 2 Capture rate (incidents of capture divided by number of sampling occasions)of eastern cottontail rabbits by date in Lincoln Park, Chicago, Illinois

Sampling Occasion / Traps / Capture rate
21 Jan 2010 / 24 / 0.083
26 Jan 2010 / 24 / 0.417
27 Jan 2010 / 24 / 0.458
28 Jan 2010 / 18 / 0.667
2 Feb 2010 / 24 / 0.500
3 Feb 2010 / 24 / 0.458
4 Feb 2010 / 24 / 0.708
9 Feb 2010 / 20 / 0.650
16 Feb 2010 / 22 / 0.727
17 Feb 2010 / 24 / 0.583
19 Jan 2011 / 32 / 0.156
20 Jan 2011 / 32 / 0.187
15 Feb 2011 / 32 / 0.125
16 Feb 2011 / 32 / 0.156
17 Feb 2011 / 32 / 0.250
18 Feb 2011 / 32 / 0.250
23 Feb 2011 / 32 / 0.218
24 Feb 2011 / 32 / 0.281
1 Mar 2011 / 32 / 0.281
2 Mar 2011 / 32 / 0.375
3 Mar 2011 / 32 / 0.281
4 Mar 2011 / 32 / 0.375
31 Jan 2012 / 19 / 0.368
1 Feb 2012 / 19 / 0.368
2 Feb 2012 / 19 / 0.632
3 Feb 2012 / 19 / 0.737
7 Feb 2012 / 19 / 0.526
8 Feb 2012 / 19 / 0.368
9 Feb 2012 / 19 / 0.421
10 Feb 2012 / 19 / 0.580
14 Feb 2012 / 19 / 0.474
15 Feb 2012 / 19 / 0.421
16 Feb 2012 / 19 / 0.684
17 Feb 2012 / 19 / 0.579

Supplemental table 3Resight survey outcomes of eastern cottontail rabbits in Lincoln Park, Chicago, Illinois. Nmarkedrefers to the number of marked rabbits in the study population. Nobservedrefers to the total number of rabbits observed in the survey on the sampling occasion indicated. Nobserved-marked refers to the number of observed rabbits that were marked in the survey on the sampling occasion indicated

Sampling Occasion / Nmarked / Nobserved / Nobserved-marked
25 Feb 2010 / 76 / 45 / 22
26 Feb 2010 / 76 / 60 / 27
1 Mar 2010 / 76 / 39 / 16
2 Mar 2010 / 76 / 42 / 19
3 Mar 2010 / 76 / 54 / 21
4 Mar 2010 / 76 / 59 / 20
5 Mar 2010 / 76 / 62 / 28
7 March 2011 / 41 / 21 / 9
8 Mar 2011 / 41 / 21 / 8
9 Mar 2011 / 41 / 16 / 5
9 Mar 2011 / 41 / 30 / 10
10 Mar 2011 / 41 / 28 / 9
11 Mar 2011 / 41 / 24 / 8
14 Mar 2011 / 41 / 25 / 11
27 Feb 2012 / 57 / 11 / 4
28 Feb 2012 / 57 / 18 / 7
29 Feb 2012 / 57 / 16 / 10
1 Mar 2012 / 57 / 16 / 9
2 Mar 2012 / 57 / 19 / 10
5 Mar 2012 / 57 / 16 / 9
6 Mar 2012 / 57 / 16 / 12
7 Mar 2012 / 57 / 20 / 12

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