Santa Cruz Wharf
Wednesday, August 14, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: Present
– Dinophysis: Present
– Margalefidinium: None
* Impressions *
The wharf was still stuck in the marine layer this morning. Phytoplankton biomass decreased again this week and the most noticeable change was the decrease in the unknown flagellate. The larger cells remained an even mix of diatoms and dinoflagellates with Pseudo-nitzschia and Prorocentrum being the most abundant. Pseudo-nitzschia were mostly delicatissima-size with a handful of the seriata-size chains. No P. australis or P. multiseries were detected in the probed counts. Alexandrium increased again this week with another dramatic jump in the cell counts.
Dinoflagellates:
C: Prorocentrum
C: Oxyphysis
C: Gymnodinium
P: Alexandrium
P: LRB
P: Dinophysis
P: Protoperidinium
R: Akashiwo
R: Ceratium
R: Gyrodinium
R: Boreadinium
Diatoms:
C: Pseudo-nitzschia
P: Navicula
P: Nitzschia
P: Fragilariopsis
R: Thalassiosira
R: Lauderia
R: Guinardia
R: Eucampia
R: Dactyliosolen
R: Coscinodiscus
R: Entomoneis
R: Licmophora
R: Thalassionema
R: Pleurosigma
R: Asteromphalus
Other:
P: Unknown flagellate
R: Dictyocha
* Environmental Information *
Time: 8:55 am
Collector: K. Negrey
Water Conditions (SCW)
Water Temperature: 14.5 C
Water Conditions: Calm
Water Color/Code: Green, 10GY 3/4 (#29)
Water Visibility: 5 ft
Tide: High – 9:12, 3.1 ft
Surf Report: NW swell, 3-4 ft
Weather Conditions (KudelaHawk)
Sky: Overcast/marine layer
Air Temperature: 55 F (12.8 C)
Wind: 2 mph, NE
Solar radiation: 167 watts/m^2
Monterey Wharf II
Wednesday, August 14, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: Abundant
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
The wharf this morning was cloudy with a slight breeze. The surface of the water had small ripples. Note: the phytoplankton samples were collected with a 50 uM mesh net this week. The water this week was a darker green than last week with a visibility of 5.0m. Diatoms dominated the water column. Pseudo-nitzschia delicatissima was abundant. Navicula, Thalassiosira, and Protoperidinium were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium, and Akashiwo sanguinea.
Dinoflagellates:
R: Akashiwo sanguinea
R: Prorocentrum spp.
R: Dinophysis spp.
R: Ceratium spp.
P: Protoperidinium spp.
R: Alexandrium spp.
R: Gyrodinium spp.
R: Cochlodinium spp.
R: Pyrophacus spp.
Diatoms:
R: Chaetoceros spp.
P: Thalassiosira spp.
R: Coscinodiscus spp.
A: Pseudo-nitzschia spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Tropidoneis spp.
R: Lauderia spp.
P: Navicula spp.
R: Cylindrotheca spp.
R: Odontella spp.
R: Asteromphalus spp.
R: Leptocylindrus spp.
R: Asterionellopsis spp.
R: Dactyliosolen spp.
R: Detonula spp.
R: Eucampia
R: Entomoneis
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
R: oligotrich
* Environmental Information *
TIME: 0823 PT
COLLECTOR: Hannah McGrath
Water Temperature: 14.0°C
Water Conditions: calm waves
Water Color: 5Y 2/2
Visibility: 5.0 m
Tide: Rising, 1.01 m, high at 0911 h
Chlorophyll: 0.942mg/m^3 by in vivo RFU
Sky: cloudy, 90% cloud
Air Temperature: 12.78°C
Wind: offline, 2.24m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%