Santa Cruz Wharf
Wednesday, December 6, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: None
– Margalefidinium: Rare
* Impressions *
Overcast (with rain coming later) and a large swell this morning. Net tow was mostly detritus/debris and phytoplankton biomass decreased dramatically from last week. The phytoplankton assemblage was an even mix of dinoflagellates and diatoms with Akashiwo and Chaetoceros being the most abundant. No Alexandrium were counted this week. Pseudo-nitzschia cells were both seriata and delicatissima sized and P. australis were detected.
Dinoflagellates:
C: Akashiwo
C: Lingulodinium
R: Prorocentrum
R: Ceratium
R: Protoperidinium
R: Margalefidinium
R: Alexandrium
Diatoms:
C: Chaetoceros
P: Guinardia
R: Thalassiosira
R: Coscinodiscus
R: Pleurosigma
R: Lauderia
R: Pseudo-nitzschia
R: Paralia
R: Thalassionema
R: Proboscia
R: Ditylum
R: Skeletonema
* Environmental Information *
Time: 9:00 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 13.5 C
Water Conditions: Large swell
Water Color/Code: Dark green, 10GY 3/4 (#29)
Water Visibility: 2 ft
Tide: Falling, Low – 12:26, 2.1 ft
Surf Report: WNW swell, 8-12 ft
NDBC buoy 46042 (drifting since 25Nov23)
– Significant wave height: NA
– Swell height/direction: NA
– Wind wave height/direction: NA
Weather Conditions (KudelaHawk)
Sky: Overcast (rain coming…)
Air Temperature: 49.3 F (9.6 C)
Wind: 4 mph, W
Solar radiation: 33 watts/m^2
Monterey Wharf II
Wednesday, December 6, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
The wharf this morning was chilly and breezy. No boats were docked in front of my site. The surface of the water was covered in foam with strong currents. The water this week was greener than last week with a visibility of 2.0m. Chlorophyll increased from last week. Dinoflagellates dominated the water column. Lingulodinium, and Ceratium were common in the water. Meanwhile, Prorocentrum and Akashiwo were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium and Akashiwo sanguinea.
Dinoflagellates:
P: Akashiwo sanguinea
P: Prorocentrum spp.
R: Dinophysis spp.
C: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Polykrikos spp.
R: Cochlodinium spp.
C: Lingulodinium polyedrum
R: Pyrophacus spp.
R: Amylax
R: Protoceratium reticulatum
Diatoms:
R: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
R: Pseudo-nitzschia spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Lauderia spp.
R: Navicula spp.
R: Licmophora spp.
R: Odontella spp.
R: Leptocylindrus spp.
Others:
R: Dictyocha spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0649 PT
COLLECTOR: Hannah McGrath
Water Temperature: 15.0°C
Water Conditions: foam at the surface and strong current
Water Color: 10GY 3/4
Visibility: 2.0 m
Tide: Falling, 1.40 m, low at 1227 h
Chlorophyll: 7.530mg/m^3 by in vivo RFU
Sky: cloudy/drizzling, 100% cloud
Air Temperature: 11.11°C
Wind: offline, 1.34m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%