1 Reply by ser (edited by ser 05-07-2010 14:41:54)

  • ser
  • ser
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  • From: Staffordshire Ecological Recor
  • Registered: 24-09-2008
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Re: Discrepancy in Species Searches

I'm not sure if this is a Species Dictionary problem or a Recorder Bug, but I'm posting it here.

I am now VERY WORRIED that when I do data reports from Recorder that I am not getting all the data I should - this one documented below was so obvious that I noticed, but other may have gone unnoticed!

Select Criteria No.1
Taxon List - "_TRICHOPTERA A Review of the Trichoptera of Great Britain"
Limit - All Species on List
Result 49 records

Select Criteria No.2
Taxon List - "Recorder 3.3"
Limit - Species = "Trichoptera"
Result 1150 records

Now both of these searches SHOULD have produced the same result, but patently DON'T

I have just downloaded and installed Dictionary updates 'O' & 'P' and all the indexes were rebuilt before running the queries

Craig Slawson
Staffordshire Ecological Record

ser's Website

2 Reply by ser

  • ser
  • ser
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Re: Discrepancy in Species Searches

I've found one problem - I'd assumed the lists with a space at the beginning and in capitals were the "REcorder preferred" lists - the " TRICHOPTERA..." seems to have only a small selection of Caddis species hence the difference - e.g. there are only 4 spp. of Limnephilus, Recorder 3.3 lists 29.

It doesn't look as if there is a preferred Trichoptera list anymore, but that is not obvious from the style of the list titles.

Can't say if this is a change at the installation of Dictionaries O & P since I hadn't run the query BEFORE updating.

Craig Slawson
Staffordshire Ecological Record

ser's Website

3 Reply by Gordon Barker

  • Gordon Barker
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Re: Discrepancy in Species Searches

Craig,

only 4 Limnephilus in version J so isn't a dictionary update issue. TRICHOPTERA seems to be the only case where the preferred list is a review rather than a checklist.

Gordon

Gordon Barker
Biological Survey Data Manager
National Trust

4 Reply by CharlesHussey

  • CharlesHussey
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  • From: The Natural History Museum
  • Registered: 11-05-2007
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Re: Discrepancy in Species Searches

This anomaly got picked up before.

My reply (posted 08/12/2009) still applies:

At present the Dictionary does not contain a list for Trichoptera with 'recommended' status. Hopefully such a list will be forthcoming, but relies upon efforts by Peter Barnard (NHM retired).

There are actually 249 Trichoptera species names within the Dictionary, spread across various lists.

The I D Wallace list of 1991 "A review of the Trichoptera of Great Britain" only contains 47 species because it exists to update relevant information in the RDB Insects (1987).

A more complete list (but not an up to date list) is the "BRC record card RA39 - Trichoptera" of 1998, which contains 202 species.

Regards,

Charles Hussey

NBN Species Dictionary Project Manager (Retired!) smile