Santa Cruz Wharf
No sample this week
Monterey Wharf II
Wednesday, December 28, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: None
– Margalefidinium: None
* Impressions *
After yesterday’s rains the water color was visibly brown with sediment and the net tows resembled strong coffee diluted with ginger ale. There was a small undercurrent that kept sweeping the net tow and van dorn off their vertical trajectories. Otherwise, the morning was calm, cool and mostly sunny. Chlorophyll increased this week, with Chaetoceros dominating, followed by Guinardia. Dinoflagellate diversity dropped markedly from last week with just a couple rare sightings: Ceratium and Protoperidinium. Diatom diversity remained quite high like last week, however the sample looked more like a warzone – lots of diatom pieces/parts (many without pigment) strewn about amongst the sediment.
Dinoflagellates:
R: Ceratium spp.
R: Protoperidinium spp.
Diatoms:
C: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
P: Pseudo-nitzschia spp.
R: Ditylum spp.
C: Guinardia spp.
P: Pleurosigma spp.
P: Skeletonema spp.
P: Tropidoneis spp.
P: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
P: Leptocylindrus spp.
R: Proboscia spp.
P: Detonula spp.
R: Eucampia
Others:
R: Dictyocha spp.
R: Phaeocystis spp. (singletons and clumps)
Zooplankton:
R: rotifer
* Environmental Information *
TIME: 0835 PT
COLLECTOR: Holly Bowers
Water Temperature: 17.6 °C
Water Conditions: Calm
Water Color: 5Y 2/2
Visibility: 2 m
Tide: Rising, 3.57 m, low at 0826 h
Chlorophyll: 5.468 mg/m^3 by in vivo RFU
Sky: mostly sunny, 25% cloud
Air Temperature: 10.0 °C
Wind: SSW, 2.91 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%