Gordon, D. P. (2023). (17) Kingdom Animalia, phylum Bryozoa (bryozoans). In: The Marine Biota of Aotearoa New Zealand. Updating our marine biodiversity inventory. NIWA Biodiversity Memoir 136. 263-281.

501482

Gordon, D. P.

2023

263-281

Publication

https://docs.niwa.co.nz/library/public/NIWAbm136-ch17.zip

The total number of described, and known but undescribed, extant marine bryozoan species from the Aotearoa New Zealand region is 1118 (699 species formally described) in two classes and three orders (Table 17.1; Figs 17.1, 17.2). Class Stenolaemata at the present day contains just one order (Cyclostomata), and New Zealand has one of the highest diversities of Cyclostomata for any country, i.e., 123 species (55 described). Class Gymnolaemata comprises two orders – Ctenostomata contains 59 marine species (35 described), and Cheilostomata contains 936 species (609 described). [There are, in addition, nine freshwater species (comprising eight indigenous species of class Phylactolaemata and one adventive species of Ctenostomata)]. The figure of 1118 marine species represents a 31% increase since 2000 (856 species) and a 17% increase since 2010 (953 species). [A small part of that increase since 2010 (~2.5%) derives from expansion of the geographic boundaries for species inclusion beyond the EEZ.] Three new families and 32 new genera have been described since Gordon et al. (2009), the majority since 2010. At present, the tally for all Phanerozoic fossil bryozoan taxa stands at 604 species, of which 327 are described and 277 are in open nomenclature (undescribed or undetermined). This is an increase of 366 fossil species since 2000. A checklist of extant and fossil New Zealand Bryozoa is provided.

New Zealand

Systematics, Taxonomy

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