Santa Cruz Wharf
Wednesday, July 31, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Rare
– Dinophysis: Present
– Margalefidinium: None
* Impressions *
Cool at the wharf this morning with the marine layer starting to burn off up on campus. Dramatic increase in phytoplankton biomass this week and dinoflagellates made up a majority of the net tow. An unknown flagellate was the most abundant this week and Akashiwo was the most abundant ‘large’ phytoplankter. Pseudo-nitzschia were all delicatissima size and Alexandrium counts increased an order of magnitude.
Dinoflagellates:
C: Akashiwo
C: Prorocentrum
P: Dinophysis
P: Oxyphysis
R: Ceratium
R: Alexandrium
R: Protoperidinium
R: Gymnodinium
R: Polykrikos
R: Boreadinium
R: Amylax
R: LRB
Diatoms:
P: Pseudo-nitzschia
P: Navicula
P: Nitzschia
R: Fragilariopsis
R: Thalassiosira
R: Lauderia
R: Guinardia
R: Thalassionema
R: Coscinodiscus
R: Cylindrotheca
Other:
A: Unknown flagellate
* Environmental Information *
Time: 9:30 am
Collector: R. Joshi
Water Conditions (SCW)
Water Temperature: 16.3 C
Water Conditions: Calm
Water Color/Code: Brown/green, 5GY 2/2 (#17)
Water Visibility: 4 ft
Tide: Rising, High – 9:50, 3.5 ft
Surf Report: NW swell, 2-3 ft
Weather Conditions (KudelaHawk)
Sky: Marine layer
Air Temperature: 57.7 F (14.3 C)
Wind: 2 mph, E
Solar radiation: 226 watts/m^2
Monterey Wharf II
Wednesday, July 31, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: Abundant
– Alexandrium: Rare
– Dinophysis: Present
– Margalefidinium: Rare
* Impressions *
The wharf this morning was cloudy, breezy, and misting. The water smelled funky. The surface of the water was relatively calm. The water this week was a slightly darker green than last week with a visibility of 1.75m. Chlorophyll increased from last week. Diatoms dominated the water column. There was a bloom of Pseudo-nitzschia delicatissima this morning. Pseudo-nitzschia delicatissima was abundant. Akashiwo and Oligotrich were common. Cylindrotheca, Pyrophacus, Dinophysis, Prorocentrum, and Oxyphysis were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium, and Akashiwo sanguinea.
Dinoflagellates:
C: Akashiwo sanguinea
P: Prorocentrum spp.
P: Dinophysis spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Gyrodinium spp.
R: Polykrikos spp.
R: Cochlodinium spp.
P: Oxyphysis
P: Pyrophacus spp.
Diatoms:
R: Chaetoceros spp.
R: Thalassiosira spp.
A: Pseudo-nitzschia spp.
R: Pleurosigma spp.
R: Thalassionema spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Leptocylindrus spp.
R: Detonula spp.
R: Striatella spp.
Zooplankton:
C: Oligotrich
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0711 PT
COLLECTOR: Hannah McGrath
Water Temperature: 15.8°C
Water Conditions: calm waves
Water Color: 5Y 2/2
Visibility: 1.75 m
Tide: Rising, 0.40m, high at 0958 h
Chlorophyll: 3.457mg/m^3 by in vivo RFU
Sky: cloudy/misting, 100% cloud
Air Temperature: 13.89°C
Wind: offline, 1.34m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%