<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi T. Bar<div><br></div><div>You might consider the OBIS extensions for Darwin Core since you are concerned with marine stuff.</div><div><br></div><div><a href="http://iobis.org/obis/obis.xsd">http://iobis.org/obis/obis.xsd</a></div><div><br></div><div><span class="Apple-style-span" style="font-family: Times; font-size: 10px; "><pre style="word-wrap: break-word; white-space: pre-wrap; ">SampleSize: the size of the sample from which the collection/observation was drawn. It can be a volume (e.g. for a phytoplankton sample), a linear distance (e.g. for a visual transect or net haul), a surface area (e.g. for a benthic core), etc. This field must also include the units, e.g. 200 mfor a transect, or 0.25 m^2 for a benthic grab (use ^ to denote a superscript). Note that when multiple collections/observations are reported from the same physical sample, a code identifying the sample can be placed in the Field_Number field to allow all collections/observations from a single sample to be connected. </pre></span></div><div><br></div><div>IndividualCount is a count of specimens (e.g. not a count of species). If you want to indicate multiple species, then you would have a record for each along with the identification and the count of individuals of that species.</div><div><br></div><div>So in the OBIS schema you have:</div><div><span class="Apple-style-span" style="font-family: Times; font-size: 10px; "><pre style="word-wrap: break-word; white-space: pre-wrap; ">ObservedIndividualCount: The number of individuals (abundance) found in a collection/record event.</pre><pre style="word-wrap: break-word; white-space: pre-wrap; "><br></pre><pre style="word-wrap: break-word; white-space: pre-wrap; ">Cheers,</pre><pre style="word-wrap: break-word; white-space: pre-wrap; ">Tim</pre><pre style="word-wrap: break-word; white-space: pre-wrap; "><br></pre></span></div><div><br><div><div>On 28 Nov 2008, at 17:05, bar tomas wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><font face="Times New Roman" size="3">Sorry if this question is misplaced in this discussion list, but I haven't been able to find a mailing list on the conceptual aspects of Darwin Core.</font></div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><font face="Times New Roman" size="3"> </font></p><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><font size="3"><font face="Times New Roman">I am interested to know if there are any recommendations on how to represent abundance in Darwin Core. I have seen some datasets using IndividualCount and SampleSize. For instance, for a fishing survey, would you use IndividualCount for the number of species in a catch, and SampleSize for the distance towed?</font></font></div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><font face="Times New Roman" size="3"> </font></p><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><font face="Times New Roman" size="3">Thank you very much</font></div> _______________________________________________<br>tdwg-tapir mailing list<br><a href="mailto:tdwg-tapir@lists.tdwg.org">tdwg-tapir@lists.tdwg.org</a><br>http://lists.tdwg.org/mailman/listinfo/tdwg-tapir<br></blockquote></div><br></div></body></html>