Santa Cruz Wharf
Wednesday, September 28, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: None
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Abundant
* Impressions *
Clear and cool this morning with a marine layer hanging out a little ways offshore. Water temp jumped ~1C this week, but phytoplankton biomass remained about the same, but diversity decreased. Net tow was mostly dinoflagellates with very few diatoms and Margalefidinium was the most abundant. Alexandrium counts decreased by about half this week.
Dinoflagellates:
A: Margalefidinium
C: Akashiwo
C: Ceratium
R: Alexandrium
R: Protoperidinium
R: Gyrodinium
R: Gymnodinium
R: Polykrikos
R: Oxytoxum
R: LRB
Diatoms:
R: Thalassiosira
R: Coscinodiscus
R: Leptocylindrus
R: Dactyliosolen
R: Navicula
Other:
R: Dictyocha
R: Unknown flagellate
* Environmental Information *
Time: 7:30 am
Collector: A. Trapp
Water Conditions (SCW)
Water Temperature: 16.1 C
Water Conditions: Calm
Water Color/Code: Green, 10GY 2/4 (#30)
Water Visibility: 3 ft
Tide: Rising, Low – 6:07, 1.5 ft
Surf Report: NW swell, 1-4 ft
NDBC buoy 46042
– Significant wave height: 4.6 ft
– Swell height/direction: 2.6 ft, SSW
– Wind wave height/direction: 3.6 ft, NW
Weather Conditions (KudelaHawk)
Sky: Clear
Air Temperature: 53.6 F (12 C)
Wind: 6 mph, W
Solar radiation: 20 watts/m^2
Monterey Wharf II
Wednesday, September 28, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Present
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
This morning the wharf was foggy and there was a strong breeze. The sky was entirely covered with clouds. There were many ripples on the surface of the water. One sealion was sitting on a piece of wood attached to the dock below me. The water was a darker green compared to two weeks ago with a visibility at 3.0m. The chlorophyll slightly increased from last week with Akashiwo and Ceratium being the most common in the phytoplankton assemblage. The following HAB species were observed: Pseudo-nitzschia, Alexandrium spp, Dinophysis, Akashiwo, and Cochlodinium.
Dinoflagellates:
C: Akashiwo sanguinea
R: Prorocentrum spp.
R: Dinophysis spp.
C: Ceratium spp.
R: Gonyaulax spinifera
P: Alexandrium spp.
R: Scrippsiella spp.
R: Gyrodinium spp. (grey green)
R: Polykrikos spp.
R: Cochlodinium spp.
R: Boreadinium cf
R: Oxyphysis
Diatoms:
R: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
R: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Asteromphalus spp.
R: Leptocylindrus spp.
R: Asterionellopsis spp.
R: Proboscia spp.
R: Detonula spp.
R: Paralaria spp.
R: Eucampia
R: Lioloma
Other:
R: Dictyocha spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0708 PT
COLLECTOR: Hannah McGrath
Water Temperature: 18.61 °C
Water Conditions: Gentle waves
Water Color: 5Y 2/2
Visibility: 3.0 m
Tide: Rising, 0.61m, high at 1222 h
Chlorophyll: 12.109 mg/m^3 by in vivo RFU
Sky: incoming clouds/fog, 100% cloud
Air Temperature: 15.0°C
Wind: N, 3.13 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%