[Tdwg-obs] On observation definition / moving forward

Denis Lepage dlepage at bsc-eoc.org
Thu Feb 9 19:09:27 CET 2006

I am in support of the suggested "group of organism", rather than "set".

I don't believe the second sentence means exactly the same thing. From a database point of vue, sometimes, a group of organism will be reported as one observation record, eg "10 Common Redpolls". The meaning of the second sentence is that observations are usually interlinked, eg, the "10 common redpolls and the 5 pine siskins where observed during the same 5 minute sampling period".

I'm also quite happy with the other definitions proposed so far.


Denis Lepage,  Senior Scientist/Chercheur sénior 
National Data Center/Centre national des données
Bird Studies Canada/Études d'Oiseaux Canada
PO Box/B.P. 160, Port Rowan, ON  N0E 1M0
519-586-3531 ext. 225, fax/téléc. 519-586-3532

> -----Original Message-----
> From: Tdwg-obs-bounces at lists.tdwg.org
> [mailto:Tdwg-obs-bounces at lists.tdwg.org]On Behalf Of Hannu Saarenmaa
> Sent: 09 February 2006 5:14 AM
> Cc: Tdwg-obs at lists.tdwg.org
> Subject: Re: [Tdwg-obs] On observation definition / moving forward
> "set of organisms" doesn't sound very natural to me. What 
> about "group of organisms"?  However, doesn't the second 
> sentence covers this anyway?
> Hannu
> Lynn Kutner wrote:
> >With only comments from Bob & Arthur (thanks!), the latest version of
> >observation definitions is as follows:
> >
> >"An observation characterizes the evidence for the presence 
> or absence
> >of an organism or set of organisms through a data collection 
> event at a
> >location. Observations are not necessarily independent and could be
> >linked via characteristics such as time, place, protocol, and
> >co-occurring organisms." 
> >  
> >
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