Islandinium pacificum sp. nov., a new dinoflagellate cyst from the upper Quaternary of the northeast Pacific

Round brown process-bearing cysts (RBPC) produced by dinoflagellates (Dinophyceae) occur as an important part of assemblage diversities in seafloor sediments worldwide. Here a new species, Islandinium pacificum, is described from surface sediment samples from coastal waters of British Columbia (Cana...

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Bibliographic Details
Published in:Palynology
Main Authors: Gurdebeke, Pieter, Mertens, Kenneth Neil, Pospelova, Vera, Van Nieuwenhove, Nicolas, Louwye, Stephen
Format: Article in Journal/Newspaper
Language:English
Published: 2020
Subjects:
Earth and Environmental Sciences
Biology and Life Sciences
Round brown process-bearing cyst
taxonomy
cyst-theca relationship
Pacific Ocean
Atlantic Ocean
Saanich Inlet
MOTILE STAGE RELATIONSHIPS
NUNATSIAVUT FJORDS LABRADOR
SURFACE-WATER CONDITIONS
RECENT MARINE-SEDIMENTS
THECA RELATIONSHIP
PHYLOGENETIC POSITIONS
ABSOLUTE ABUNDANCE
BRITISH-COLUMBIA
SEA
DINOPHYCEAE
Canada
Pacific
British Columbia
North Atlantic
Online Access:https://biblio.ugent.be/publication/8641110
http://hdl.handle.net/1854/LU-8641110
https://doi.org/10.1080/01916122.2018.1549118
https://biblio.ugent.be/publication/8641110/file/8661779
Description
Summary:Round brown process-bearing cysts (RBPC) produced by dinoflagellates (Dinophyceae) occur as an important part of assemblage diversities in seafloor sediments worldwide. Here a new species, Islandinium pacificum, is described from surface sediment samples from coastal waters of British Columbia (Canada). Additional observations are made on material from the Holocene of Kyuquot Sound (Vancouver Island, Canada) and the Eemian of the Voring Plateau (North Atlantic). The cysts have a smooth wall and bear acuminate processes with barbs. Incubation experiments reveal an affinity with the motile stage Protoperidinium mutsuense. The ecology of the new species is specified.

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