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Research Update #4132145
05/15/24 11:33 AM
05/15/24 11:33 AM
Joined: Feb 2007
Posts: 1,239
Auburn University
S
Steve Ditchkoff Offline OP
8 point
Steve Ditchkoff  Offline OP
8 point
S
Joined: Feb 2007
Posts: 1,239
Auburn University
Hey all. A few years ago I promised that we would share the results of the deer research that we did that was funded by ADCNR. Attached below are two of the publications that came out of this research. Sorry it took so long to post these. Happy reading.

Publication 1

Publication 2


***************
Steve Ditchkoff
College of Forestry, Wildlife and Environment
Auburn University
***************
Re: Research Update [Re: Steve Ditchkoff] #4132197
05/15/24 01:31 PM
05/15/24 01:31 PM
Joined: Dec 2019
Posts: 60
Mobile
M
marlin78 Offline
spike
marlin78  Offline
spike
M
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Mobile
[Linked Image]

Re: Research Update [Re: Steve Ditchkoff] #4132231
05/15/24 03:36 PM
05/15/24 03:36 PM
Joined: Nov 2011
Posts: 10,686
A
abolt300 Offline
Booner
abolt300  Offline
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Posts: 10,686
Summary based on what I was able to skim through in 5 min at lunch, one study shows that roughly 18-20% of bucks in the study succumbed to a mortality cause other than a bullet or broadhead with doe natural mortality be nominal compared to bucks . The other study showed that deer dont like human pressure. With that said, it showed that does are more tolerant of it than bucks, and mature bucks especially, move more when it is dark and/or when humans are not present.

Re: Research Update [Re: abolt300] #4132491
05/16/24 11:39 AM
05/16/24 11:39 AM
Joined: Jan 2011
Posts: 3,265
Lawrence Co. AL
jdhunter2011 Offline
8 Point
jdhunter2011  Offline
8 Point
Joined: Jan 2011
Posts: 3,265
Lawrence Co. AL
Originally Posted by abolt300
Summary based on what I was able to skim through in 5 min at lunch, one study shows that roughly 18-20% of bucks in the study succumbed to a mortality cause other than a bullet or broadhead with doe natural mortality be nominal compared to bucks . The other study showed that deer dont like human pressure. With that said, it showed that does are more tolerant of it than bucks, and mature bucks especially, move more when it is dark and/or when humans are not present.

Pretty good summary, but add- just hunt on Wednesdays and Thursdays.


Its not the will to win but the will to prepare to win!
Re: Research Update [Re: jdhunter2011] #4132573
05/16/24 02:54 PM
05/16/24 02:54 PM
Joined: Nov 2018
Posts: 326
L.A.
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BAR1225 Offline
4 point
BAR1225  Offline
4 point
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Joined: Nov 2018
Posts: 326
L.A.
Originally Posted by jdhunter2011
Originally Posted by abolt300
Summary based on what I was able to skim through in 5 min at lunch, one study shows that roughly 18-20% of bucks in the study succumbed to a mortality cause other than a bullet or broadhead with doe natural mortality be nominal compared to bucks . The other study showed that deer dont like human pressure. With that said, it showed that does are more tolerant of it than bucks, and mature bucks especially, move more when it is dark and/or when humans are not present.

Pretty good summary, but add- just hunt on Wednesdays and Thursdays.


I look forward to reading the studies later when I have more time. I noticed years ago that visible deer movement went way down Friday - Monday and then picked back up Tuesday - Thursday. All during the week the woods were quite and peaceful and then come Friday when all the trucks and atv’s piled in, every critter within ear shot knew danger just showed up.

Re: Research Update [Re: abolt300] #4132646
05/16/24 05:42 PM
05/16/24 05:42 PM
Joined: Feb 2007
Posts: 19,282
colbert county
cartervj Offline
Old Mossy Horns
cartervj  Offline
Old Mossy Horns
Joined: Feb 2007
Posts: 19,282
colbert county
Originally Posted by abolt300
Summary based on what I was able to skim through in 5 min at lunch, one study shows that roughly 18-20% of bucks in the study succumbed to a mortality cause other than a bullet or broadhead with doe natural mortality be nominal compared to bucks . The other study showed that deer dont like human pressure. With that said, it showed that does are more tolerant of it than bucks, and mature bucks especially, move more when it is dark and/or when humans are not present.



That explains some of the the loss of those 2.5 -3.5 yr old bucks
Would those loses be from breeding stress or multiple reasons

Last edited by cartervj; 05/17/24 05:30 AM.

“Socialism only works in two places: Heaven where they don't need it and hell where they already have it.” ― Ronald Reagan
Re: Research Update [Re: Steve Ditchkoff] #4132689
05/16/24 07:21 PM
05/16/24 07:21 PM
Joined: Apr 2000
Posts: 16,162
Elmore County
Frankie Offline
Old Mossy Horns
Frankie  Offline
Old Mossy Horns
Joined: Apr 2000
Posts: 16,162
Elmore County
welllllllll ,,, im gonna just shack my head and walk off .

Re: Research Update [Re: Steve Ditchkoff] #4133067
05/17/24 01:19 PM
05/17/24 01:19 PM
Joined: Aug 2018
Posts: 5,367
Georgia and Missouri
Semo Offline
12 point
Semo  Offline
12 point
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Georgia and Missouri
Thanks for posting.

Re: Research Update [Re: cartervj] #4133090
05/17/24 01:46 PM
05/17/24 01:46 PM
Joined: Feb 2007
Posts: 1,239
Auburn University
S
Steve Ditchkoff Offline OP
8 point
Steve Ditchkoff  Offline OP
8 point
S
Joined: Feb 2007
Posts: 1,239
Auburn University
Originally Posted by cartervj
Originally Posted by abolt300
Summary based on what I was able to skim through in 5 min at lunch, one study shows that roughly 18-20% of bucks in the study succumbed to a mortality cause other than a bullet or broadhead with doe natural mortality be nominal compared to bucks . The other study showed that deer dont like human pressure. With that said, it showed that does are more tolerant of it than bucks, and mature bucks especially, move more when it is dark and/or when humans are not present.



That explains some of the the loss of those 2.5 -3.5 yr old bucks
Would those loses be from breeding stress or multiple reasons


Mostly breeding stress. Below is an article we published from some work in Oklahoma on rut-related stress.

Article


***************
Steve Ditchkoff
College of Forestry, Wildlife and Environment
Auburn University
***************
Re: Research Update [Re: Steve Ditchkoff] #4133336
05/17/24 08:35 PM
05/17/24 08:35 PM
Joined: Jan 2013
Posts: 19,744
Pelham
B
Ben2 Offline
Old Mossy Horns
Ben2  Offline
Old Mossy Horns
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Joined: Jan 2013
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Pelham
Originally Posted by Steve Ditchkoff
Originally Posted by cartervj
Originally Posted by abolt300
Summary based on what I was able to skim through in 5 min at lunch, one study shows that roughly 18-20% of bucks in the study succumbed to a mortality cause other than a bullet or broadhead with doe natural mortality be nominal compared to bucks . The other study showed that deer dont like human pressure. With that said, it showed that does are more tolerant of it than bucks, and mature bucks especially, move more when it is dark and/or when humans are not present.



That explains some of the the loss of those 2.5 -3.5 yr old bucks
Would those loses be from breeding stress or multiple reasons


Mostly breeding stress. Below is an article we published from some work in Oklahoma on rut-related stress.

Article




Good stuff. Thanks for posting

Re: Research Update [Re: Steve Ditchkoff] #4135442
05/21/24 05:34 PM
05/21/24 05:34 PM
Joined: Oct 2001
Posts: 25,643
Tampa
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Beer Belly Offline
Freak of Nature
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Posts: 25,643
Tampa

Chat GPT Summary of shorter paper:

Adult white‐tailed deer survival in hunted
populations on public and private lands


Study Area Summary
Locations

The study was conducted in four areas of Alabama, USA:

Barbour Wildlife Management Area (WMA): 114 km²
Oakmulgee WMA: 180 km²
Marengo: 31 km² (combination of privately owned and leased land)
Pickens: 49 km² (leased by a private timber company to hunting clubs)

Terrain and Habitat

Barbour WMA and Marengo: Located in the northern portion of Alabama's lower coastal plain with gently rolling terrain.
Oakmulgee WMA and Pickens: Located in the southern foothills of the Appalachian Mountains, characterized by rugged terrain with steep to moderate slopes.
Public-use Areas: Dominated by mixed pine-hardwood stands managed on a 3-5 year prescribed burn rotation.
Private-land Areas: Managed primarily for timber production, with varying stages of loblolly and shortleaf pine regeneration and hardwoods restricted to streamside zones.

Climate

Precipitation: Mean annual precipitation was 147 cm.
Temperature: Winter temperatures ranged from -1 to 20°C, and summer temperatures ranged from 18 to 34°C.

Deer Hunting Regulations

Hunting Season: Each area had a 109-day hunting season with dates varying to align with local deer breeding times:
Oakmulgee WMA and Pickens: 15 October – 31 January
Barbour WMA and Marengo: 25 October – 10 February
Harvest Limits: Statewide regulations allowed one antlerless and one antlered deer per hunter per day, with a maximum of three antlered deer per season.
Antler Point Restriction (APR): Applied variably across areas:
On private properties, one of the antlered deer had to have ≥4 antler points on one side.
Self-imposed restrictions on private lands required all antlered deer to be at least 3.5 years old.
Barbour WMA required each harvested antlered deer to have ≥3 antler points on one side.
In 2015-2016, Oakmulgee WMA was split into two management zones with different antler point restrictions.

Hunting Effort

Public Lands: Higher hunting effort was observed, especially on Saturdays with an average of 0.72 hunters/km²/day.
Private Lands: Lower hunting effort with an average of 0.013 hunter hours/ha/day.

Methods
Deer Capture and Monitoring

Capture Period: October 2013 to March 2014, and May-September of 2014 and 2015.
Techniques: Deer were immobilized and fitted with VHF radiocollars and ear tags. Age was estimated using tooth replacement and wear, and live body characteristics.
Monitoring Period: 15 February 2014 to 14 February 2016.
Public Outreach: Hunters were informed to treat collared deer the same as uncollared ones regarding harvest decisions.

Data Analysis

Survival and Mortality Rates: Estimated using Program MARK with a known fate model.
Seasons Defined: Post-breeding (15 Feb–14 Jun), parturition (15 Jun–14 Oct), and breeding (15 Oct–14 Feb).
Age Classes: Deer were grouped into <3.5 years (immature) and ≥3.5 years (mature) for survival estimates.
Modeling: Two sets of models were developed to assess survival and probability of hunter harvest, considering factors like sex, age, and landownership.

Results

Sample Size: Monitored 79 radio-collared deer (33 males, 46 females), resulting in 141 deer-years.
Mortalities: 30 documented mortalities (77% harvest-related, 17% natural, 6% unknown).
Key Findings:
Mortality was primarily driven by hunter harvest.
Mature males had significantly higher mortality rates than immature males.
No significant variation in survival between public and private lands.
Landownership did not significantly affect survival rates.

Discussion

Primary Driver: Hunter harvest was the main factor affecting deer survival.
Comparison with Other Studies: Contrary to some studies, no significant differences in survival rates between public and private lands were found, likely due to self-imposed restrictions on private lands and state-mandated regulations on public lands.
Management Implications: Findings highlight the importance of hunter regulations and selective harvest practices in managing deer populations.


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