Santa Cruz Wharf
Wednesday, August 30, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Common
– Margalefidinium: Rare
* Impressions *
Another warm and sunny morning at the wharf. Water temperature increased again this week (1C). Phytoplankton biomass was similar to last week and the assemblage remains mostly dinoflagellates. While there were still plenty of Dinophysis in the net tow, Prorocentrum were the most abundant this week. Pn were seriata-size (just a couple chains) and no P. australis or P. multiseries were detected. Alexandrium counts decreased an order of magnitude this week.
Dinoflagellates:
C: Prorocentrum
C: Dinophysis
C: LRB
P: Ceratium
P: Protoperidinium
P: Gymnodinium
R: Margalefidinium
R: Oxyphysis
R: Alexandrium
R: Akashiwo
R: Polykrikos
R: Boreadinium
Diatoms:
R: Skeletonema
R: Asterionellopsis
R: Lauderia
R: Pseudo-nitzschia
Other:
P: Dictyocha
* Environmental Information *
Time: 8:45 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 18.5 C
Water Conditions: Calm
Water Color/Code: Blue green, 10B 3/6 (#16)
Water Visibility: >10 ft
Tide: Rising, High – 11:13, 4.4 ft
Surf Report: NW swell, 1-2 ft
NDBC buoy 46042
– Significant wave height: 7.2 ft
– Swell height/direction: 5.9 ft, NW
– Wind wave height/direction: 4.3 ft, NW
Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 64.9 F (18.3 C)
Wind: 1 mph, ENE Solar radiation: 311 watts/m^2
Monterey Wharf II
Wednesday, August 30, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
The wharf was beautiful (see picture below). There was a breeze on the wharf. This morning there were clear skies and a bright sun. However, the sky in the distance was slightly hazy. The surface of the water had slow rolling waves that moved towards the direction of the dock. The water this week was bluer than last week with the same visibility of 4.5m. Chlorophyll decreased from last week. Dinoflagellates dominated the water column. Prorocentrum and Dictyocha were common in the water column. Meanwhile Pleurosigma was present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Dinophysis and Akashiwo sanguinea.
Dinoflagellates:
R: Akashiwo sanguinea
C: Prorocentrum spp.
R: Dinophysis spp.
R: Ceratium spp.
R: Protoperidinium spp.
R: Pyrophacus spp.
R: Amylax
Diatoms:
R: Chaetoceros spp.
R: Coscinodiscus spp.
R: Pseudo-nitzschia spp.
P: Pleurosigma spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Leptocylindrus spp.
R: Entomoneis
Others:
C: Dictyocha spp.
R: sponge spicule
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0649 PT
COLLECTOR: Hannah McGrath
Water Temperature: 18.1°C
Water Conditions: rolling waves
Water Color: 5G 2/6
Visibility: 4.5 m
Tide: Rising, 0.21m, high at 1113 h
Chlorophyll: net: 1.055mg/m^3 by in vivo RFU
Sky: sunny/ clear skies, 0% cloud
Air Temperature: 15.0°C
Wind: offline, 2.24m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%