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ABOUT SCALE HIVES HONEYBEES SITE DATA NEWS LINKS
Alpharetta, GA
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County:  State: GA
Lat/Long: 34.0, -84.2 Observer: Parker
Active Since: 2008  
   

Site Description:

Hive is located in suburban area north of Atlanta. Many landscaped lawns and a large wooded park with irrigation within a 3 mile radius of hives.

Three colonies in located in backyard - one deep, 2-3 mediums each. Queens are Russian/Carniolan mix up to 1 year old.

Forage consists of mainly Tulip Poplar, Holly (many landscaped bushes and trees), some Sourwood, Blackberry, Privet, Goldenrod, Black Locust.

Scale:

Fairbanks scale leveled on pavers over pea gravel.

Nectar Flow Data 2008

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Nectar Flow Data 2009

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MODIS Subset Data (from the ORNL DAAC)
Red dots are the average of all pixels with acceptable quality (see landcover extract below for area covered).
Blue dots are the center pixel only (point is not plotted if the pixel is of unacceptable quality).

 

NDVI

The Normalized Difference Vegetation Index (NDVI) is the ratio of the  difference between visible (red) and infra-red (IR) wavebands to the sum of these bands. 

NDVI = nir - red / nir + red


 NDVI provides an indication of the amount and vigor of vegetated  surfaces. 

 NDVI has been widely used with multiple generations of satellite data.

EVI

 The Enhnaced Vegetation Index (EVI) is a more complicated combination of wavebands compared to the more widely used index, NDVI.  The advantage of this newer index is improved sensitivity in high biomass regions and reduction in atmospheric influences.
where,
pNIR = NIR reflectance
pRed = red reflectance
pBlue = blue reflectance
C1 = atmosphere resistance red correction coefficient
C2 = atmosphere resistance blue correction coefficient
L = canopy background brightness
G = gain factor

The MODIS sensor on the Terra satellite platform provides us with 16-day composite measures of NDVI/EVI throughout the year.  NASA distributes MODIS data from many of their distributed data centers.

MODIS Land Cover

 

MODIS Data Subset Citation:
Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC). 2007. MODIS subsetted land products, Collection 4. Available on-line [http://www.daac.ornl.gov/MODIS/modis.html] from ORNL DAAC, Oak Ridge, Tennessee, U.S.A..
 
 
Meteorological Data

 

coming soon...

 

 

 
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Last Updated: October 29, 2009