Brevard Squirrel Count 1,2,3

Graphical Summary 1997-2009

2009

Verbal Summary
Overall Results

Ranking of Sectors

Percent White by Sector (Composite of 3 Counts)

2008
Verbal Summary
Overall Results
Numerical Results by Sector

Ranking of Sectors
Percent White by Sector (Composite of 3 Counts)

2007
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector

Percent White Squirrels by Sector (Composite of 3 counts)

2006
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector

Percent White Squirrels by Sector (Composite of 3 counts)

2005
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector

Percent White Squirrels by Sector (Composite of 3 counts)

2004
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector
Percent White Squirrels by Sector (Composite of 3 counts)


2003
Verbal Summary

Overall Results (All Sectors Combined)
Numerical Results by Sector
Percent White Squirrels by Sector (Composite of 3 counts)

2002
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector
Percent White Squirrels by Sector (Composite of 3 counts)

2001
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector
 
Percent White Squirrels by Sector (Composite of 3 counts)
Distribution of Individuals within Sectors (White and Gray Squirrels)
Summary of the Brevard Variant and Squirrel Count (through 2001)
Population Genetics Implications of the White Variants Success (through 2001)

2000
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector
Percent White Squirrels by Sector (Composite of 3 counts)
Distribution of Individuals within Sectors (White and Gray Squirrels)
 

1999
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector
Percent White Squirrels by Sector (Composite of 3 counts)
Distribution of Individuals within Sectors (White and Gray Squirrels)

1998
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector
Percent White Squirrels by Sector (Composite of 3 counts)
Distribution of Individuals within Sectors (White and Gray Squirrels)
 Comparison of 1997 and 1998 Counts

1997
Verbal Summary
Overall Results (All Sectors Combined)
Numerical Results by Sector
Percent White Squirrels by Sector (Composite of 3 counts)
Distribution of Individuals within Sectors (White and Gray Squirrels)
 

Regional Distribution since 1987

Towards an Actual Census

 1 Maps from the 1997-2001 Counts showing the actual geographic distribution of squirrels in each of the 35 Sectors are available online by clicking on "Distribution of Individuals within Sectors (White and Gray Squirrels)".  They can also be accessed from the "Numerical Results by Sector" page by clicking on a specific count number for that Sector.  We stopped posting them with the 2002 Annual Count.  However, the actual maps on which observers recorded sightings (as well as the original datasheets) for all counts are archived in the Brevard College Library.

2  Beginning in Fall 2004 the protocol followed for the annual count was relaxed to accommodate student "volunteers."  Rather than requiring that the count within all Sectors be carried out during a prescribed time period (8:00-10:00 a.m.), observers were assigned Sectors and allowed to make their observations at their convenience (within limits).   It was reasoned that although this might effect the number of squirrels observed, there was no a priori reason to suspect it would effect percent white versus gray since, to our knowledge, there is no difference in foraging behavior between the two variants.  Remember the function of the Annual Count is to estimate percent white; different methods are used to estimate abundance.  If fewer squirrels were indeed observed, it might effect the reliability of the estimated percentages but the reliability of student observations on early Saturday mornings was already in question.  Preliminary studies actually showed that more squirrels were observed in late morning and early afternoon (and even during the dreaded high noon hours) then the previous prescribed 8-10 a.m. period.


3  Glesener (the Director) retired from Brevard College in Spring of 2005.  The Heart of Brevard took over sponsorship of the White Squirrel Reseach Institute and the annual squirrel count from Fall 2005 to the present.  Without the "leverage" afforded to motivate student participation, the count now relied on true volunteers.  One negative consequence was that not all Sectors have been able to be covered since that time(e.g., for the 2009 count 25 of 35 or 71.4% of Sectors were counted).  On a positive note, we believe that those counts completed are probably more accurate,   There, indeed, has been an apparent shift in the percentages calculated   An analysis of the possible factors responsible for this shift is currently underway.

 



 

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