Santa Cruz Wharf
Wednesday, August 16, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: None
– Alexandrium: None
– Dinophysis: Present
– Margalefidinium: Rare
* Impressions *
Marine layer was pretty thick down at the wharf and lots of surface debris was in the sampling area this morning. Net tow was similar to last week – assemblage was mostly diatoms (with a fair number of dinoflagellates in the mix). Thalassiosira was the most abundant and Alexandrium counts are holding steady.
Dinoflagellates:
C: Akashiwo
P: Ceratium
P: Protoperidinium
P: Prorocentrum
P: Dinophysis
R: Margalefidinium
R: Oxyphysis
R: Polykrikos
R: Heterocapsa
R: Boreadinium
Diatoms:
C: Thalassiosira
C: Detonula
P: Skeletonema
P: Eucampia
P: Asterionellopsis
P: Chaetoceros
R: Lauderia
R: Guinardia
R: Coscinodiscus
R: Ditylum
R: Stephanopyxis
R: Pleurosigma
R: Navicula
R: Asteromphalus
R: Entomoneis
R: Tropidoneis
* Environmental Information *
Time: 8:50 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 15.9 C
Water Conditions: Calm
Water Color/Code: Dark green, 10GY 2/4 (#30)
Water Visibility: 4 ft
Tide: Rising, High – 12:16, 3.9 ft
Surf Report: NW swell, 2-3 ft
NDBC buoy 46042
– Significant wave height: 5.2 ft
– Swell height/direction: 4.9 ft, WNW
– Wind wave height/direction: 0.7 ft, WNW
Weather Conditions (KudelaHawk)
Sky: Marine layer
Air Temperature: 57.9 F (14.4 C)
Wind: 1 mph, E
Solar radiation: 166 watts/m^2
Monterey Wharf II
Wednesday, August 16, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: Present
– Margalefidinium: Rare
* Impressions *
Fog-ust has set in. The wharf this morning was very cloudy with a slight breeze. I couldn’t see the mountains on the horizon. There were small ripples on the surface of the water. There was also more kelp on the surface of the water than usual. The water smelt stinky this morning when I performed my net tows. The water this week was a slightly lighter green than last week with a visibility of 4.5m. Chlorophyll decreased from last week. Diatoms dominated the water column. Chaetoceros and Asterionellopsis were common in the water. Meanwhile, Eucampia, Pseudo-nitzschia, Cylindrotheca, Dinophysis, and Prorocentrum were present in the water. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Dinophysis, Cochlodinium, and Akashiwo sanguinea.
Dinoflagellates:
R: Akashiwo sanguinea
P: Prorocentrum spp.
P: Dinophysis spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Gyrodinium spp.
R: Polykrikos spp.
R: Cochlodinium spp.
R: Lingulodinium polyedrum
R: Oxyphysis
R: Pyrophacus spp.
R: Amylax
R: Protoceratium
Diatoms:
C: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
P: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
x: Thalassiothrix spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
P: Cylindrotheca spp.
R: Bacillaria spp.
R: Licmophora spp.
R: Asteromphalus spp.
C: Asterionellopsis spp.
x: Bacteriastrum spp.
R: Stephanopyxis spp.
R: Detonula spp.
R: Striatella spp.
P: Eucampia
R: Entomoneis
Others:
R: Dictyocha spp.
R: Sponge spicule
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0745 PT
COLLECTOR: Hannah McGrath
Water Temperature: 17.5°C
Water Conditions: calm
Water Color: 10GY 2/4
Visibility: 4.5 m
Tide: Rising, 0.3 m, high at 1220h
Chlorophyll: net: 27.146mg/m^3 by in vivo RFU
Sky: cloudy, 100% cloud
Air Temperature: 15.3°C
Wind: offline, 0.89m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%