Non‐toxic blooms of<i>Prorocentrum micans</i>(Dinophyceae) in the Karamea Bight

Cassie, Vivienne

doi:10.1080/00288330.1981.9515910

Cited by 15 publications

(7 citation statements)

References 9 publications

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“…In February 1982, large dinoflagellates, particularly Prorocentrum micans, completely dominated the nearshore phytoplankton to the exclusion of diatoms (Chang unpublished data). Similar blooms of P. micans were reported off Karamea Bight by Cassie (1981). The exception was Transect 4 at Station Q690.…”

Section: Biomasssupporting

confidence: 58%

Standing stocks and productivity of phytoplankton off Westland, New Zealand, February 1982

Bradford¹,

Chang²

1987

New Zealand Journal of Marine and Freshwater Research

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In February 1982 there was an intense bloom of dinoflagellates close inshore off Westland, New Zealand, and dinoflagellates also formed a large proportion of the phytoplankton offshore. Diatoms were present only at the bottom of the photic zone inshore off Wanganui Bluff, where dissolved nitrate-nitrogen levels were elevated. Most biomass and production parameters were at least twice as large as in winter except for offshore biomass which was larger in winter. Weighted average chlorophyll a concentrations were negatively correlated with the depth of the mixed layer. The relative contribution which the vertical distribution of chlorophyll a, the production per unit chlorophyll a at optimal light intensities, and the initial slope of the light saturation curve made to the relationship between water column production per unit chlorophyll a and incident solar irradiance in inshore and offshore waters is discussed. In the nonsenescent inshore populations dominated by Prorocentrum micans, 91% of the variance in water column P B was explained by variance in incident solar irradiance with a light utilisation index of 3.00 g C (g Chl. a)-1 E -1 m 2 .

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Section: Biomasssupporting

confidence: 58%

Standing stocks and productivity of phytoplankton off Westland, New Zealand, February 1982

Bradford¹,

Chang²

1987

New Zealand Journal of Marine and Freshwater Research

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“…These dinoflagellates are: Alexandrium tamarense, Prorocentrum minimum, Dinophysis acuminata (Steidinger & Baden 1984), and Prorocentrum micans (Cassie 1981). Gymnodinium sanguineum, which bloomed in the fall of 1987, has been shown to be avoided by zooplankton grazers off California (Fiedler 1982).…”

Section: Discussionmentioning

confidence: 99%

Plankton studies in Buzzards Bay, Massachusetts, USA III. Dmoflagellates, 1987 to 1988

Pierce¹,

Turner²

1994

Mar. Ecol. Prog. Ser.

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Dinoflagellates were counted and identified in >20 v samples from Buzzards Bay, Massachusetts, USA, from October 1987 to September 1988. Eight stations were sampled at monthly or twice-monthly intervals. Dinoflagellates were the most abundant organisms in the >20 pm microplankton samples (excluding diatoms), comprising up to 99% of total organisms. A total of 46 dinoflagellate species from 19 genera were recorded, and there were dinoflagellate blooms throughout the year. Bloom-forming taxa included Gymnodinium sanguineurn, Heterocapsa triquetra, Prorocentrum minimum, and Prorocentrum triestinum. Mean annual dinoflagellate abundance was 9.7 X 103 cells I-', but blooms reached concentrations of 10' cells 1-'. Dinoflagellates were most abundant from spring to fall, and dinoflagellate blooms developed in between diatom blooms, coinciding with increasing silicate concentrations. This suggests that after silicate depletion by diatom blooms, dinoflagellates were able to exploit an undersaturated phytoplankton niche. Dinoflagellates were much more abundant at the New Bedford sewage outfall and in New Bedford Harbor than in the rest of the bay. The effect of concentrating dinoflagellate samples with a 20 pm mesh screen was examined by comparisons of abundance of selected taxa in screened and unscreened whole-water samples concentrated by sedimentation. There were no significant differences between screened and whole-water samples (2-way ANOVA for paired comparisons) for total dinoflagellates, or for 5 abundant taxa.

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“…Occasionally, however, it forms blooms in certain areas which give the water a characteristic 'red tide' appearance (Cassie 1981). Many of the specimens examined were flattened by the pressure of filtration during collection (Fig.…”

Section: Prorocentrum Micans Ehrenbergmentioning

confidence: 99%

Some coastal marine dinoflagellates from around New Zealand

Burns

Mitchell

1982

New Zealand Journal of Marine and Freshwater Research

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Non‐toxic blooms ofProrocentrum micans(Dinophyceae) in the Karamea Bight

Abstract: Dense phytoplankton blooms of the thecate dinoflagellate Prorocentrum micans Ehrenberg causing brown discoloration of the water occurred off Westport in March 1976 and March 1978. No toxic effects are known to have resulted from these blooms.

Cited by 15 publications

References 9 publications

Standing stocks and productivity of phytoplankton off Westland, New Zealand, February 1982

Standing stocks and productivity of phytoplankton off Westland, New Zealand, February 1982

Plankton studies in Buzzards Bay, Massachusetts, USA III. Dmoflagellates, 1987 to 1988

Some coastal marine dinoflagellates from around New Zealand

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