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John,<br>
I'm not sure that I agree with your analysis that the definition
prevents the possibility of making an Identification at a rank less
specific than a species. My revised definition says that the
Individual should only include groups of organisms that are reliably
known to be of a single species - it doesn't say that we need to know
what that species is (i.e. an identification to genus or family can be
made with the hope that someone down the line would be able to refine
the identification to species). Clarification on this point could be
added to the comment or the Google Code page, but I don't think there
is a problem with the definition per se. However, if there is a
consensus that the definition is too restrictive, I would not object to
changing the wording of the definition from "species (or lower
taxonomic rank if it exists)" to "taxon" if there were clarification
added to the comments or Google Code page that Individual was not
intended to include aggregations of multiple species.<br>
<br>
I agree that there is a need for a term that represents "collections",
"bags", "aggregations", or whatever you want to call an aggregation
that includes multiple species. But I have never intended that
Individual should be that term. If we expand Individual to include
aggregates, then it becomes unusable for its original intended
purpose. I would prefer for someone to propose a different term for
aggregates of individuals instead of adding that function to
Individual. Then define the relationship of this new thing to
Individual as a one:many relationship (one aggregation:many
Individuals).<br>
<br>
Steve<br>
<br>
John Wieczorek wrote:
<blockquote
cite="mid:AANLkTi=_0wQX+QZaGtUWC2CpxaO4ZFd=sUXmGCG3=DS2@mail.gmail.com"
type="cite">Most of you probably do not receive postings from the
Google Code site for Darwin Core. Steve B. updated the proposal for the
new term Individual, and then commentary ensued on the Issue tracker.
Since there remains an unresolved issue, I'm bringing the discussion
back here by adding the commentary stream below. The unresolved issue
is Steve's amendment is the restriction in the definition to "a single
species (or lower taxonomic rank if it exists)."
<div><br>
</div>
<div>Rich argues that we should not obviate the capability of
applying an Identification to an aggregate (e.g., fossil), where the
aggregate consists of multiple taxa.</div>
<div>Steve argues that Identifications should be applied only
to aggregates of a single taxon.</div>
<div><br>
</div>
<div>Steve, aside from the aggregate issue (which should be solved
satisfactorily), your suggestion is too restrictive, because it would
obviate the possibility of making an Identification (even for a single
organism) to any rank less specific than a species. That is a loss of
capability, and therefore unreasonable.</div>
<div><br>
</div>
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class="author" style="margin-bottom: 1em; padding-left: 0.7em;">Comment <a
moz-do-not-send="true" name="c7"
href="http://code.google.com/p/darwincore/issues/detail?id=69&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Reporter%20Summary%20Opened#c7"
style="color: rgb(0, 0, 204);">7</a> by <a moz-do-not-send="true"
href="http://code.google.com/u/baskaufs/"
style="color: rgb(0, 0, 204); white-space: nowrap;">baskaufs</a></span>, <span
class="date" title="Tue Nov 2 20:16:17 2010">Today (8 hours ago)</span>
<pre
style="overflow: hidden; font-size: 12px; padding-left: 0.7em;">As a result of the discussion that has taken place on the tdwg-content email list during 2010 October and November, I am updating the term recommendation for Individual as follows:
Definition: The category of information pertaining to an individual organism or
a group of individual organisms that can reliably be known to represent a single species (or lower taxonomic rank if it exists).
Comment: Instances of this class can serve the purpose of connecting one or more instances of the Darwin Core class Occurrence to one or more instances of the Darwin Core class Identification.
Refines: N/A
Please note that as a precautionary measure, I have removed the statement that Individual refines <a
moz-do-not-send="true"
href="http://purl.org/dc/dcmitype/PhysicalObject"
style="color: rgb(0, 0, 204);">http://purl.org/dc/dcmitype/PhysicalObject</a> because the definition of PhysicalObject specifically mentions that the object is inanimate. I am not currently aware of any well-known term that defines living things.
Steve Baskauf
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<span class="author"
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class="date" title="Tue Nov 2 20:36:04 2010">Today (8 hours ago)</span>
<pre
style="overflow: hidden; font-size: 12px; padding-left: 0.7em;">I think the definition should be "...represent a single taxon". We shouldn't restrict it to members of the same species (or lower), because then we technically can't include things that may represent more than one species, yet would best be treated within the scope of an Individual.
Also, I'm slightly partial to the term "Organism" for this class, rather than "Individual", because it's more clearly tied to the biology domain, and less likely to collide with the word "Individual" in other domains. I know such collision is not a technical problem, but it might lead to some confusion.
</pre>
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<span class="author"
style="margin-bottom: 1em; padding-left: 0.7em;">Comment <a
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style="color: rgb(0, 0, 204);">9</a> by <a moz-do-not-send="true"
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style="color: rgb(0, 0, 204); white-space: nowrap;">baskaufs</a></span>, <span
class="date" title="Tue Nov 2 21:12:00 2010">Today (8 hours ago)</span>
<pre
style="overflow: hidden; font-size: 12px; padding-left: 0.7em;">Well, the reason that I defined it to be members of the same species is to ensure that the term Individual can serve the primary function that I perceived was needed: to make the connection from occurrences to identifications. When I said one or more identifications, I meant one or more opinions about what that single species (or lower) was, not that there could be multiple identifications of several different species that happened to be in the same "bag" such as the contents of a pitfall trap containing multiple species, an image that contained several species, or a specimen that contained parasites of a different species. I think that there is a need for a term for this other kind of thing, (a heterogeneous "lot", "batch", or something), but I think that including this in definition of Individual defeats the purpose for which I proposed it. If there were several different species in the "Individual", then
one would have to specify which identification went with which biological individual within the "lot", which would result in actually breaking down the "lot" into single species "Individuals" anyway.</pre>
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<br>
<pre class="moz-signature" cols="72">--
Steven J. Baskauf, Ph.D., Senior Lecturer
Vanderbilt University Dept. of Biological Sciences
postal mail address:
VU Station B 351634
Nashville, TN 37235-1634, U.S.A.
delivery address:
2125 Stevenson Center
1161 21st Ave., S.
Nashville, TN 37235
office: 2128 Stevenson Center
phone: (615) 343-4582, fax: (615) 343-6707
<a class="moz-txt-link-freetext" href="http://bioimages.vanderbilt.edu">http://bioimages.vanderbilt.edu</a>
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