169 PHYTOPLANKTON FROM THE HAURAKI GULF. by Krystyna A. Lanigan* INTRODUCTION The literature on the occurrence of phytoplankton in New Zealand waters is meagre. Earlier papers with a few diagrams and species lists include Crawford (1947) and Norris (1961). Cassie (1960, 1961) has described seasonal changes in diatoms and dinoflagellates off the East Coast, together with species lists and photographs. Comprehensive diagrams and photographs of diatoms occurring in New Zealand waters appear in a series of papers by Crosby and Ferguson Wood (1958, 1959); Ferguson Wood, Crosby and Cassie (1959); and Ferguson Wood (1961, 1963). The most recent check list of New Zealand diatoms is by Taylor (1970). The following diagrams are intended to help in identifying commonly occur- ring phytoplankton. Dimensions are given in microns and are means of ten measurements (taken in 1971). The classification of Taylor (1970) has been adopted. CLASSIFICATION DIVISION:CHRYSOPHYTA CLASS BACILLARIOPHYCEAE ORDER BACILLARIALES Suborder Biddulphineae Family Biddulphiaceae: Family Chaetoceraceae: Suborder Coscinodiscinaceae Family Coscinodiscaceae: Suborder Rhizosoleniineae Family Leptocylindraceae: Family Rhizosoleniaceae: Suborder Fragilariineae Family Fragilariaceae: Suborder Achnanthineae Family Achnanthaceae: Suborder Naviculineae Family Bacillariaceae: Family Cymbellaceae: Family Naviculaceae: DIVISION PYRROPHYTA CLASS DESMOKONTAE Family Prorocentraceae: CLASS DINOPHYCEAE Biddulphia, Ditylum, Eucampia, Hemialus. Chaetoceras. Paralia, Thalassiosira, Stephanopyxis. Guinardia, Lauderia, Leptocylindrus. Rhizosolenia. Asterionella, Thalassionema, Thalassiothrix. Cocconeis. Nitzschia. Phaeodactylum. Diploneis, Navicula, Pleurosigma. Exuviaella, Prorocentrum. 'Department of Botany, University of Auckland.
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Phytoplankton from the Hauraki Gulf · 1961 Marine phytoplankton in New Zealand waters. Bot. Marina 2 (supp.): 1-54. 1947 A phytoplankto n seaso Cook Strait i . Roy. Soc. N.Z. Rep.
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169
PHYTOPLANKTON FROM THE HAURAKI GULF.
by Krystyna A . Lanigan*
I N T R O D U C T I O N
The literature on the occurrence of phytoplankton in New Zealand waters is meagre. Earlier papers with a few diagrams and species lists include Crawford (1947) and Norris (1961). Cassie (1960, 1961) has described seasonal changes in diatoms and dinoflagellates off the East Coast, together with species lists and photographs. Comprehensive diagrams and photographs of diatoms occurring in New Zealand waters appear in a series of papers by Crosby and Ferguson Wood (1958, 1959); Ferguson Wood, Crosby and Cassie (1959); and Ferguson Wood (1961, 1963). The most recent check list of New Zealand diatoms is by Taylor (1970).
The following diagrams are intended to help in identifying commonly occurring phytoplankton. Dimensions are given in microns and are means of ten measurements (taken in 1971). The classification of Taylor (1970) has been adopted.
C L A S S I F I C A T I O N DIVISION:CHRYSOPHYTA
C L A S S B A C I L L A R I O P H Y C E A E O R D E R B A C I L L A R I A L E S Suborder Biddulphineae
Family Biddulphiaceae:
Family Chaetoceraceae:
Suborder Coscinodiscinaceae
Family Coscinodiscaceae:
Suborder Rhizosoleniineae Family Leptocylindraceae: Family Rhizosoleniaceae:
Suborder Fragilariineae Family Fragilariaceae:
Suborder Achnanthineae
Family Achnanthaceae:
Suborder Naviculineae Family Bacillariaceae: Family Cymbellaceae: Family Naviculaceae:
DIVISION PYRROPHYTA C L A S S D E S M O K O N T A E