Ecology and Vulnerability
Timber Rattlesnake

Image
image of rattlesnake on a log head and upper body visable

Photo credit:  Tanner Smida

Scientific name
Crotalus horridus

Profile: Timber Rattlesnake

Only two research articles covered the climate change response of five northeastern RSGCN snake species (Figure 2.14), with only one of those articles being published in the last 20 years (Panella et...

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Only two research articles covered the climate change response of five northeastern RSGCN snake species (Figure 2.14), with only one of those articles being published in the last 20 years (Panella et al., 2020). Much remains to be known about how these species may respond to climate change.

Changes in Population

In West Virginia, a 12-year study (1989-2001) found that reproductive failure occurs 25- 35% of the time. Failure is correlated with lower temperatures and above-average cloud cover during the active months of May through September (Martin, 2002).

Indirect Effects

A Conservation Species Assessment in Nebraska noted that the Timber Rattlesnake is highly vulnerable to climate change, needing rocky outcrops surrounded by specific habitat characteristics that make adaptation unlikely (Panella et al., 2022).

Martin, W.H., 2002. Life history constraints on the timber rattlesnake (Crotalus horridus) at its climatic limits. Biology of the Vipers, pp.285-306. 

Panella, M.J., Fogell, D. and Rothe-Groleau, C., 2022. Timber Rattlesnake (Crotalus horridus): A Species Conservation Assessment for The Nebraska Natural Legacy Project.

Climate Change Vulnerability Assessment: Timber Rattlesnake (Maine)

Ranking
Presumed Stable
Confidence
Not Specified
Climate scenario
Not Specified
Location
Maine
Time period
Not Specified

Climate Change Vulnerability Assessment: Timber Rattlesnake (Tennessee)

Ranking
Presumed Stable
Confidence
Incorporated into the CCVI method
Climate scenario
Climate Wizard projections for 2050; IPCC Fourth Assessment Report (IPCC 2007) for a 16-model Ensemble Average
Location
Tennessee
Time period
2050

Climate Change Vulnerability Assessment: Timber Rattlesnake (Massachusetts)

Ranking
Most Vulnerable
Confidence
The experts assessing traits also scored their level of uncertainty
Climate scenario
the Community Earth System Model (CESM) and the Model for Interdisciplinary Research on Climate (MIROC5)
Location
Massachusetts
Time period
2070

Climate Change Vulnerability Assessment: Timber Rattlesnake (Northeastern US)

Ranking
Not Specified
Confidence
Not Specified
Climate scenario
Not Specified
Location
Northeastern US
Time period
Not Specified

Climate Change Vulnerability Assessment: Timber Rattlesnake (New York)

Ranking
Presumed Stable
Confidence
Not Specified
Climate scenario
Not Specified
Location
New York
Time period
Not Specified

Climate Change Vulnerability Assessment: Timber Rattlesnake (Pennsylvania)

Ranking
Presumed Stable
Confidence
Not Specified
Climate scenario
Not Specified
Location
Pennsylvania
Time period
Not Specified