RE: Bird Databases - some thoughts

To: "'ozbird'" <>
Subject: RE: Bird Databases - some thoughts
From: "Conole, Lawrie" <>
Date: Wed, 26 Nov 1997 11:25:57 +1000
> * Accuracy of information - data is only of any use if it 
> can accurately match sightings with specific habitats at 
> specific dates.  How many 'lists' have you seen that are 
> just that and no more?  'Good' databases will record 
> observations to 100m accuracy or better.
This is an interesting point.  A few of us (I include myself) use a GPS
device to record precise locations, better than 100m accuracy - maybe as
good as 50m at times.  This can be output as a grid reference (UTM) or
lat/long to degree/minute/second (DMS), but the Atlas of Victorian
Wildlife as an example can't handle UTM or that level of accuracy in
lat/long, and degrades the locations to DM.  I then get a letter asking
for a more precise location!!  A capacity to handle UTM and DMS is
something that should be planned for (probably is being planned for) in
the longer term, as I don't always have a map of areas I visit, and
therefore I'm more likely to record the location by lat/long.  By way of
a postscript I note that the new 1:100,000 topo maps include UTM as well
as AMG grid markers on the map margins - useful for GPS users as there
can be 100m or so difference between UTM and AMG coordinates.

Cheers, Lawrie

Lawrie Conole
Geelong, Victoria, Australia

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