
Journal of Biogeography, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 24, 2025
ABSTRACT Aim With the global redistribution of species due to warming, accurately quantifying distributions is critical understanding patterns in biodiversity and range shift trajectories. The genus Tripneustes comprises globally important sea urchin taxa that graze seagrass macroalgae have potential transform ecosystems. In eastern Australia, there are two taxa, tropical T. g. gratilla subtropical‐temperate australiae . temperate distribution was considered be a climate‐driven extension until recent taxonomic clarification. We quantified present future these warming hot spot. Location Eastern Australia Tasman Sea, including Lord Howe Island, Norfolk north New Zealand. Taxon (Echinodermata: Echinoidea: Toxopneustidae). Methods reassessed specimen identifications across four museum collections synthesise data citizen science observations, determining biogeographic realised thermal niches Habitat suitability models were used determine current suitable habitat predict distributional change. Results Whilst has wide tropical‐temperate region from Papua Guinea (9°56′2.4″ S) Jervis Bay (35°7′12″ broad niche (16.3°C–29.97°C), (Byron Bay, 28°37′0.12″ S, Narooma, 36°15′0″ narrower (15.3°C–26°C). densities highest subtropical ecoregions, where co‐occur. modelling indicated narrow‐range specialist will likely undergo poleward by 2100. contrast, generalist appears capable occupying broader conditions. Main Conclusions Despite their similar ecological roles, congeneric contrasting niches, with distinct implications for as ocean warms.
Language: Английский