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Update to the taxa per hectad checklists

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Update to the taxa per hectad checklists

by Max.brown » Wed Feb 13, 2019 11:12 am

Hi all,

I may have missed something but is there an updated version of the checklist:

- Hectads, number of GB hectads (New Atlas. Preston et al. 2002)

Post 2002? There are a lot more taxa recorded and distributions expanded since 2002. If there is not a ready made checklist, is there a search query I could make?

Thanks,
Max Brown
Max.brown
 
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Re: Update to the taxa per hectad checklists

by admin » Wed Feb 13, 2019 11:25 am

Hi Max,

There isn't an updated checklist (that's probably something that will be revised once the data for Atlas2020 is compiled and checked). You could generate a hectad count from the live data using a query that grouped by taxon and counted hectads, (options that are available under more options => grouping.

e.g.

https://database.bsbi.org/search.php#re ... b339a428cd

Screenshot 2019-02-13 10.21.22.png
Screenshot 2019-02-13 10.21.22.png (83.21 KiB) Viewed 509 times


For the sake of example I searched for a single taxon (D. incarnata), but you could run a similar query over a large set of taxa.

The query is constrained to Britain by entering 'GB' in the county field, as a short-hand for the mainland British counties.

(the other two filters used exclude rejected records and exclude records with substantial grid-reference/county discrepancies)
Tom Humphrey
Database Officer, Botanical Society of Britain and Ireland (BSBI)
c/o Centre for Ecology and Hydrology,Maclean Building, Crowmarsh Gifford, Wallingford, Oxon, OX10 8BB, UK.
tom.humphrey@bsbi.org
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Re: Update to the taxa per hectad checklists

by Max.brown » Wed Feb 13, 2019 12:07 pm

That's great thank you! Is there a fast way doing this for all taxa?

Thanks!
M
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Joined: Tue Mar 20, 2018 12:13 am
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Re: Update to the taxa per hectad checklists

by admin » Wed Feb 13, 2019 12:30 pm

To show results for all taxa, leave the species field blank - the search may be quite slow to run. If the search appears to stall then you could leave it (it will carry on running even if the page is closed) the return later and retrieve the results set from your search history list or send the results by email.
Tom Humphrey
Database Officer, Botanical Society of Britain and Ireland (BSBI)
c/o Centre for Ecology and Hydrology,Maclean Building, Crowmarsh Gifford, Wallingford, Oxon, OX10 8BB, UK.
tom.humphrey@bsbi.org
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Re: Update to the taxa per hectad checklists

by Max.brown » Wed Feb 13, 2019 12:52 pm

That is perfect!! Thank you :)

Max
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