teach/public/img/world/ATTRIBUTION.md

# Wereldoriëntatie – beeldbronnen

De lokale WebP-bestanden zijn uitsluitend verkleinde en, waar nodig, gekaderde
afgeleiden van de hieronder genoemde foto's. De soortnamen zijn gecontroleerd
aan de hand van de bestandsbeschrijvingen op Wikimedia Commons.

## Bomen

| Bestand | Bronwerk | Maker | Licentie |
| --- | --- | --- | --- |
| `trees/oak.webp` | [1. English Oak (Quercus robur)](https://commons.wikimedia.org/wiki/File:1._English_Oak_(Quercus_robur)_(3607652442).jpg) | AnemoneProjectors | [CC BY-SA 2.0](https://creativecommons.org/licenses/by-sa/2.0/) |
| `trees/birch.webp` | [Betula pendula winter](https://commons.wikimedia.org/wiki/File:Betula_pendula_winter.jpg) | Maplan | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `trees/horse-chestnut.webp` | [Paardenkastanje2](https://commons.wikimedia.org/wiki/File:Paardenkastanje2.jpg) | Toubib | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `trees/pine.webp` | [Pinus sylvestris Glenmuick](https://commons.wikimedia.org/wiki/File:Pinus_sylvestris_Glenmuick.jpg) | Hello, I am Bruce | [CC BY-SA 2.0](https://creativecommons.org/licenses/by-sa/2.0/) |
| `trees/beech.webp` | [Fagales – Fagus sylvatica](https://commons.wikimedia.org/wiki/File:Fagales_-_Fagus_sylvatica.jpg) | Emőke Dénes | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) |
| `trees/maple.webp` | [Acer-pseudoplatanus](https://commons.wikimedia.org/wiki/File:Acer-pseudoplatanus.jpg) | MPF | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `trees/willow.webp` | [Salix alba an der Isar](https://commons.wikimedia.org/wiki/File:Salix_alba_an_der_Isar.jpg) | Burkhard Mücke | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) |
| `trees/alder.webp` | [Alnus glutinosa 011](https://commons.wikimedia.org/wiki/File:Alnus_glutinosa_011.jpg) | Willow | [CC BY 2.5](https://creativecommons.org/licenses/by/2.5/) |

## Bladeren en naalden

| Bestand | Bronwerk | Maker | Licentie |
| --- | --- | --- | --- |
| `leaves/oak.webp` | [Zomereik blad Quercus robur](https://commons.wikimedia.org/wiki/File:Zomereik_blad_Quercus_robur.jpg) | Rasbak | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `leaves/birch.webp` | [Atlas roslin pl Brzoza brodawkowata 1393 6470](https://commons.wikimedia.org/wiki/File:Atlas_roslin_pl_Brzoza_brodawkowata_1393_6470.jpg) | Joanna Boisse | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) |
| `leaves/horse-chestnut.webp` | [Aesculus hippocastanum in botanical garden of UKW Bydgoszcz (2)](https://commons.wikimedia.org/wiki/File:Aesculus_hippocastanum_in_botanical_garden_of_UKW_Bydgoszcz_(2).jpg) | Tournasol7 | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) |
| `leaves/pine.webp` | [20151215Pinus sylvestris2](https://commons.wikimedia.org/wiki/File:20151215Pinus_sylvestris2.jpg) | AnRo0002 | [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) |
| `leaves/beech.webp` | [20130530Hain Rotbuche](https://commons.wikimedia.org/wiki/File:20130530Hain_Rotbuche.jpg) | AnRo0002 | [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) |
| `leaves/maple.webp` | [Acer pseudoplatanus 003](https://commons.wikimedia.org/wiki/File:Acer_pseudoplatanus_003.jpg) | Willow | [CC BY 2.5](https://creativecommons.org/licenses/by/2.5/) |
| `leaves/willow.webp` | [20160721Salix alba1](https://commons.wikimedia.org/wiki/File:20160721Salix_alba1.jpg) | AnRo0002 | [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) |
| `leaves/alder.webp` | [20200531Alnus glutinosa2](https://commons.wikimedia.org/wiki/File:20200531Alnus_glutinosa2.jpg) | AnRo0002 | [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) |

## Vogels

| Bestand | Bronwerk | Maker | Licentie |
| --- | --- | --- | --- |
| `birds/robin.webp` | [Erithacus rubecula, Roodborstje](https://commons.wikimedia.org/wiki/File:Erithacus_rubecula,_Roodborstje.jpg) | Rasbak | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `birds/great-tit.webp` | [Parus major m](https://commons.wikimedia.org/wiki/File:Parus_major_m.jpg) | Sławek Staszczuk | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `birds/blackbird.webp` | [Solsort](https://commons.wikimedia.org/wiki/File:Solsort.jpg) | Malene Thyssen | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `birds/mallard.webp` | [Duisburg 10401IMG 0401](https://commons.wikimedia.org/wiki/File:Duisburg_10401IMG_0401.JPG) | Mbdortmund | [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/) |
| `birds/blue-tit.webp` | [Cyanistes caeruleus 3 Luc Viatour](https://commons.wikimedia.org/wiki/File:Cyanistes_caeruleus_3_Luc_Viatour.jpg) | Luc Viatour | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |
| `birds/house-sparrow.webp` | [Huismus, man](https://commons.wikimedia.org/wiki/File:Huismus,_man.jpg) | JrPol | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) |
| `birds/magpie.webp` | [Сорока (Pica pica), Калининград](https://commons.wikimedia.org/wiki/File:%D0%A1%D0%BE%D1%80%D0%BE%D0%BA%D0%B0_(Pica_pica),_%D0%9A%D0%B0%D0%BB%D0%B8%D0%BD%D0%B8%D0%BD%D0%B3%D1%80%D0%B0%D0%B4.jpg) | Dion Art | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) |
| `birds/woodpecker.webp` | [Grote bonte specht](https://commons.wikimedia.org/wiki/File:Grote_bonte_specht.JPG) | Usitea | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) |

## Topografie

`netherlands-provinces.svg` is een vereenvoudigde afgeleide zonder labels van
[Netherlands provinces map blank.svg](https://commons.wikimedia.org/wiki/File:Netherlands_provinces_map_blank.svg)
door Gust Justice, gelicentieerd onder
[CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/). De afgeleide
provinciecontouren worden onder dezelfde licentie verspreid.

De plaatsing van stadspunten is daarnaast gecontroleerd met
[Map provinces Netherlands-en.svg](https://commons.wikimedia.org/wiki/File:Map_provinces_Netherlands-en.svg)
door Alphathon ([CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/)).

`world-continents.svg` is gegenereerd uit de fysieke
[Natural Earth 1:110m Geography Regions Polygons](https://www.naturalearthdata.com/downloads/110m-physical-vectors/110m-physical-labels/)
en, voor de eilanden van Oceanië,
[Admin 0 Countries](https://www.naturalearthdata.com/downloads/110m-cultural-vectors/110m-admin-0-countries/).
Natural Earth stelt deze geografische brondata beschikbaar als publiek domein.
De lokale afgeleide bevat zeven afzonderlijk bedienbare werelddeelcontouren.

De vier Nederlandse landsdelen volgen de
[CBS-indeling voor Gebieden in Nederland 2026](https://www.cbs.nl/nl-nl/cijfers/detail/86247NED).
De selectie en loop van de grote rivieren zijn gecontroleerd aan de hand van het
[Rijkswaterstaat-overzicht Rivieren](https://www.rijkswaterstaat.nl/water/waterbeheer/beheer-en-ontwikkeling-rijkswateren/rivieren).