User talk:Giovanni Caudullo

Request

Greetings, @Giovanni Caudullo: ! I have seen that you are the creator of the wonderful maps showing the range of different tree species. I would like to ask you when you find time to update the map of Pinus brutia's range with an "X" showing its limited natural range in Bulgaria. Its distribution in Bulgaria can be seen here. Best regards, --Gligan1 (talk) 09:00, 10 January 2018 (UTC)

Thanks @Gligan1: for your review. I will update the map of Pinus brutia soon. --Giovanni Caudullo (talk) 09:17, 10 January 2018 (UTC)

Response on Betula pubescens map change comment.

Does this source work for you? Howpper (talk) 10:30, 10 January 2019 (UTC)

Yes, that's perfect. I will try to find some specific reference with the complete species distribution in Greenland. Thanks a lot.

A goat for you!

Thank you for all your photos

Firestar464 (talk) 11:30, 3 November 2020 (UTC)

A barnstar for you!

	The Graphic Designer's Barnstar
	Thanks for all those thorough maps of trees and shrub species you created! AndersenAnders (talk) 15:09, 15 December 2020 (UTC)

Thank you for the maps!

Hi Giovanni, thank you very much for building these maps, they are very useful.

Is creating these maps something very manual and laborious? Do you know if there is any tutorial or public documentation on how to create them? I would love to learn how to create them, but I don't know if it is feasible for me to learn (I am not a graphic designer, I am a software developer). At this point, I don't know how to start (what tools could be used, what source images are available, etc.).

For example, I would like to create European distribution maps for Acer monspessulanum and Bupleurum fruticosum.

Is there any chance you could provide some steps or links to documentation?

Many thanks!

--Pere Orga (talk) 13:33, 3 July 2021 (UTC)

Hi @Pere Orga: I'm happy my maps can be useful. To create these maps, I used a GIS software (Geographic Information System). Nothing so complicated, but you need to understand how they work and how to visualise and show correctly the spatial layers. I suggest to start with QGIS, a free and open-source software. Online you can find thousands of tutorials (for example the official manual).

The hardest part is to import into your GIS project all spatial information of the species from different sources (such as sample points, images from books, grids from atlases, etc.), overlap them and draw manually the species range. This operation requires a more advanced skill and a bit of time to be learnt.

As I work on woody plants, the Acer monspessulanum is on my To-Do list.

Hope this could be of help.

--Giovanni Caudullo (talk) 07:42, 5 July 2021 (UTC)

Use a map in a work to be published?

Hi Giovanni, I am working on a children’s book that will have science lesson plans and all profits are donated to a State Park in USA. I would like to use your map on the range of the Sessile Oak in the science lesson. What reference/citation/acknowledgment would you like printed with its use? Would I just cite your name, Wikimedia Commons and “This file is licensed under the Creative Commons Attribution 4.0 International license.”? Thank you so much! 217.180.192.227 19:42, 18 July 2022 (UTC)

Hi, thanks for your interest in our maps and for using one of them in a book. The correct reference for these distribution maps is the paper where the work was presented:

Caudullo, G., Welk, E., San-Miguel-Ayanz, J., 2017. Chorological maps for the main European woody species. Data in Brief 12, 662-666.

The license is optional but appreciated. Thanks again.

--- Giovanni Caudullo (talk) 08:17, 1 August 2022 (UTC)