Santa Cruz Wharf
Wednesday, November 20, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: None
– Alexandrium: Rare
– Dinophysis: None
– Margalefidinium: None
* Impressions *
Overcast and windy at the wharf this morning. Phytoplankton biomass and diversity decreased dramatically this week and the net tow was mostly detritus/debris. The assemblage was mostly dinoflagellates and Prorocentrum was the most abundant. No Pseudo-nitzschia were observed and Alexandrium counts decreased an order of magnitude.
Dinoflagellates:
C: Prorocentrum
C: Akashiwo
P: Protoperidinium
P: Gymnodinium
R: Tripos/Ceratium
R: Alexandrium
Diatoms:
P: Leptocylindrus
R: Thalassiosira
R: Pleurosigma
R: Coscinodiscus
R: Fragilariopsis
R: Entomoneis
* Environmental Information *
Time: 9:30 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 11.7 C
Water Conditions: Choppy w/swell
Water Color/Code: Dark green, 10GY 3/4 (#29)
Water Visibility: 3 ft
Tide: Rising, Low – 6:50, 3.4 ft
Surf Report: WNW swell, 8-10 ft
Weather Conditions (KudelaHawk)
Sky: Overcast, windy
Air Temperature: 53.1 F (11.7 C)
Wind: 10 mph, NNE
Solar radiation: 152 watts/m^2
Monterey Wharf II
Wednesday, November 20, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
The wharf was chilly with minimal breeze this morning! Along the horizon there was fog/haze. The surface of the water was calm. The water this week was a darker green than last week. Dinoflagellates dominated the water column. Prorocentrum was abundant in the water. Akashiwo and Ceratium were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis and Akashiwo sanguinea.
Dinoflagellates:
P: Akashiwo sanguinea
A: Prorocentrum spp.
R: Dinophysis spp.
P: Ceratium spp.
R: Gonyaulax spinifera
R: Alexandrium spp.
R: Gyrodinium spp.
R: Polykrikos spp.
R: Oxyphysis
R: Pyrophacus spp.
R: Amylax
Diatoms:
R: Thalassiosira spp.
R: Coscinodiscus spp.
R: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Skeletonema spp.
R: Tropidoneis spp.
R: Odontella spp.
Others:
R: Dictyocha spp.
R: Sponge spicule
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0714 PT
COLLECTOR: Hannah McGrath
Water Conditions: calm
Water Color: 10Y 2/2
Tide: Rising , 1.01m, high at 1243 h
Sky: cloudy, 90% cloud
Air Temperature: 5.0 °C
Wind: offline, 1.34 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%