Santa Cruz Wharf
Wednesday, September 14, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Present
– Dinophysis: Present
– Margalefidinium: Common
* Impressions *
Another sunny morning at the wharf and the marine layer was filling in (which was weird). Lots of kelp wrack and very active CSLs in the sampling location this am. Net tow remains mostly dinoflagellates, but diatom abundance and diversity increased. Phytoplankton biomass decreased slightly and the assemblage shifted to being mostly Ceratium. Pseudo-nitzschia were mostly delicatissima size and the Alexandrium counts decreased.
Dinoflagellates:
A: Ceratium
C: Margalefidinium
P: Dinophysis
P: Alexandrium
P: Protoperidinium
R: Akashiwo
R: Gymnodinium
R: Prorocentrum
R: Boreadinium
R: Scrippsiella
R: Pyrocystis
Diatoms:
P: Pseudo-nitzschia
P: Thalassiosira
P: Lauderia
P: Fragilariopsis
R: Guinardia
R: Chaetoceros
R: Asteromphalus
R: Navicula
R: Coscinodiscus
R: Lithodesmium
R: Nitzschia
Other:
R: Dictyocha
* Environmental Information *
Time: 9:10 am
Collector: K. Negrey
Water Conditions (SCW)
Water Temperature: 16.0 C
Water Conditions: Rippled
Water Color/Code: Green/blue, 5G 2/6 (#31)
Water Visibility: 7 ft
Tide: Rising, Low – 7:25, 1.6 ft
Surf Report: S swell, 1-3 ft
NDBC buoy 46042
– Significant wave height: 3.9 ft
– Swell height/direction: 3.9 ft, SSW
– Wind wave height/direction: 1.0 ft, WNW
Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 59.2 F (15.1 C)
Wind: 3 mph, ENE
Solar radiation: 365 watts/m^2
Monterey Wharf II
Wednesday, September 14, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
The wharf was busy this morning with fishermen. Sampling occurred during the slack tide. Barnacles were exposed and covered the wooden pillars of the dock. Cloud coverage was minimal. A blue sky hovered directly above me. Directly across from my sampling site there was a platform boat working underneath the dock. There was a slight breeze/wind causing ripples on the surface of the water. The water color was a darker green than last week and visibility increased to 6.5m. Chlorophyll increased compared to last week with Pseudo-nitzschia and Chaetoceros being the most common species present. Other HAB species that were observed today included Akashiwo, Alexandrium, Dinophysis, and Cochlodinium.
Dinoflagellates:
R: Akashiwo sanguinea
R: Dinophysis spp.
R: Ceratium spp.
R: Protoperidinium spp.
R: Scrippsiella spp.
R: Gyrodinium spp. (pink tipped)
R: Cochlodinium spp.
R: Oxyphysis
Diatoms:
C: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
C: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Odontella spp.
R: Asteromphalus spp.
P: Asterionellopsis spp.
R: Detonula spp.
R: Paralaria spp.
R: Striatella spp.
R: Eucampia
R: Lioloma
Others:
R: Dictyocha spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0716 PT
COLLECTOR: Hannah McGrath
Water Temperature: 20.22 °C
Water Conditions: Relatively calm
Water Color: 10Y 2/2
Visibility: 6.5 m
Tide: Slack at 3.3m, rising high at 1344 h
Chlorophyll: net: 9.798 mg/m^3 by in vivo RFU
Sky: wispy clouds concentrated to the east, 15% cloud
Air Temperature: 15.0°C
Wind: S, 2.24 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%