Santa Cruz Wharf
Wednesday, June 14, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: None
– Dinophysis: Present
– Margalefidinium: None
* Impressions *
Another overcast morning at the wharf. There was a dramatic decrease in detritus/debris in the net tow this week and the phytoplankton assemblage shifted to mostly dinoflagellates. Overall phytoplankton biomass increased and Ceratium and Protoperidinium were the most abundant. Pseudo-nitzschia in the net tow were seriata size (2-cell chains) and the Alexandrium counts were similar to last week.
Dinoflagellates:
C: Protoperidinium
C: Ceratium
C: Prorocentrum
P: Dinophysis
R: LRB
R: Gymnodinium
R: Polykrikos
R: Boreadinium
R: Akashiwo
Diatoms:
P: Thalassiosira
R: Chaetoceros
R: Guinardia
R: Coscinodiscus
R: Detonula
R: Rhizosolenia
R: Eucampia
R: Asteromphalus
R: Pseudo-nitzschia
R: Cylindrotheca
R: Ditylum
R: Pleurosigma
R: Nitzschia
Other:
A: Flagellate
* Environmental Information *
Time: 8:30 am
Collector: MC/GCG/HA
Water Conditions (SCW)
Water Temperature: 14.5 C
Water Conditions: Calm
Water Color/Code: Blue/green, 5BG 2/6 (#15)
Water Visibility: 4 ft
Tide: Rising, High – 9:14, 3.4 ft
Surf Report: NW swell, 2-3 ft
NDBC buoy 46042
– Significant wave height: 4.6 ft
– Swell height/direction: 4.6 ft, WNW
– Wind wave height/direction: 0.7 ft, WNW
Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 55.4 F (13 C)
Wind: 5mph, SSE
Solar radiation: 129 watts/m^2
Monterey Wharf II
Wednesday, June 14, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Abundant
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
This morning the wharf was cloudy but the air was relatively warm. The sun was trying to peek through the clouds. There were several sailboats docked at my site. In addition, there were bird feathers on the surface of the water. Overall, the water was relatively calm. The water this week was a slightly lighter green than last week with a visibility of 5.0m. Chlorophyll decreased from last week. Pseudo-nitzschia was abundant in the water. Meanwhile, Chaetoceros, Dinophysis, and Pyrophacus were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, and Dinophysis.
Dinoflagellates:
R: Prorocentrum spp.
P: Dinophysis spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Gyrodinium spp. (pink tipped)
R: Polykrikos spp.
P: Pyrophacus spp.
R: Amylax
Diatoms:
P: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
A: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Thalassionema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Asterionellopsis spp.
R: Detonula spp.
R: Eucampia
Others:
R: Larvacean
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0719 PT
COLLECTOR: Hannah McGrath
Water Temperature: 14.50°C
Water Conditions: Relatively calm
Water Color: 10Y 2/2
Visibility: 5.0 m
Tide: Rising, 1.19 m, high at 0924 h
Chlorophyll: net: 10.839mg/m^3 by in vivo RFU
Sky: cloudy, 80% cloud
Air Temperature: 13.89°C
Wind: NA, 0.89 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%