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ABOUT SCALE HIVES HONEYBEES SITE DATA NEWS LINKS
St. Petersburg, FL
Return to Regional/National map
County:  Pinellas State: FL
Active Since: 2009 Observer: Kish
Lat/Long: 27.8, -82.6 Landsat WRS Path/Row: 17/41
MODIS TIle V/H: 6/10 MODIS Line, Samp: 259.70, 830.80

Site/Hive Description:

Highly urbanized site, in residential backyard, approx 100 yds to brackish water canal. Vegetation ranges from citrus to sub-tropical landscape plant varieties, native cabbage palm, saw palmetto, and mangrove to abundant invasive species such as the Brazilian pepper.

Hive:
Single deep, queen is second generation Minnesota Hygenic, born March 2009

Colony:
Russian queen, new in 2008

Scale:
Fairbanks, 1000 lb capacity

Forage:
Citrus/mixed varieties wildflower and landscape plants (Feb/Mar), Black/Red/White mangrove (May/June), Brazilian pepper (Fall)

Nectar Flow Data 2009

Download Data File (comma delimited), download QA flag key

 

 
Nectar Flow Data 2010

Download Data File (comma delimited), download QA flag key

 

 
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..
 
 
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Last Updated: February 1, 2024