List of Chromista by conservation status
, the International Union for Conservation of Nature has evaluated the conservation status of 15 species within Chromista.
The IUCN has not evaluated any protist species other than those in Phaeophyceae. No Chromista subspecies or subpopulations have been evaluated. No evaluated Chromista species are confirmed to be extinct, but four are tagged as possibly extinct.
the New Zealand Threat Classification System has evaluated 38 species of macroalgae as Threatened and 23 as Data Deficient. Some of these species are only of concern nationally.
IUCN evaluations
Vulnerable
Data Deficient
All are brown algae :
NZTCS evaluations
Nationally Critical
Dione arcuata - One Location
Range Restricted
Caulerpa racemosa - Secure OverseasCaulerpa sertulariodes - Secure Overseas, One LocationCaulerpa webbiana - Secure Overseas, One LocationChlidophyllon kaspar - One LocationChordariopsis capensis - Data Poor, Secure OverseasChrysymenia? polydactyla - Data Poor, One LocationCodium geppiorum - Secure Overseas, One LocationCurdiea balthazar - One LocationDichotomaria marginata - Secure Overseas, One LocationDurvillaea sp. Antipodes WELT A17080 - One LocationDurvillaea chathamensis - One LocationGalaxaura cohaerens - One LocationGalaxaura filamentosa - One LocationGalaxaura rugosa - One LocationGanonema farinosa - One LocationGelidium allanii - Threatened Overseas“Gelidium” ceramoidesGelidium longipes - One LocationGigartina sp. Bounty Is. - One LocationGigartina dilatata - Gigartina grandifida - One LocationGigartina sp. Three Kings - One LocationLandsburgia ilicifolia - Data Poor, One LocationLandsburgia myricifolia - One LocationLessonia adamsiae - One LocationLessonia brevifolia - Lessonia tholiformis - One LocationMarginariella parsonsiiPalmophyllum umbracolaPerisporochnus regalis - One LocationPredaea sp. - One LocationPsilosiphon scoparium - Threatened OverseasPterocladia lindaueri - One LocationPyrophyllon cameronii - One LocationSargassum johnsonii - One LocationSonderopelta coriacea - Secure Overseas, One LocationTricleocarpa cylindrica - Secure Overseas, One Location
Data Deficient
Acrochaete endostracaAcrochaetium leptonemioides - One LocationAcrochaetium neozeelandicum - One LocationBangia spp. Caulerpa fastigiataCephalocystis furcellataChampiocolax sp. Codium perriniaeCodium platyclados - Threatened? OverseasCutleria mollisEntocladia spp. Epicladia testarumErythrotrichia bangioides - One LocationErythrotrichia hunterae - One LocationGiraudyopsis stellifera - Secure OverseasNemacystus novae-zelandiaeOchlochaete hystrixOvillaria catenataPorphyra spp. Porphyridium purpuream - Secure OverseasPseudobryopsis planktonica - One LocationSebdenia lindaueri - One Location