Santa Cruz Wharf
Wednesday, August 24, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: None
– Alexandrium: Present
– Dinophysis: Rare
– Margalefidinium: Common
* Impressions *
Heavy marine layer this am. Bait ball was in the sampling area and lots of birds feeding. Net tow was mostly dinoflagellates and phytoplankton biomass was about the same. Ceratium and Margalefidinium were the most abundant. The Alexandrium counts increased significantly this week, lots of 4-cell chains zooming around.
Dinoflagellates:
C: Margalefidinium
C: Ceratium
P: Alexandrium
P: LRB
P: Prorocentrum
P: Akashiwo
P: Gyrodinium
R: Dinophysis
R: Oxyphysis
R: Protoperidinium
Diatoms:
P: Leptocylindrus
R: Navicula
R: Thalassiosira
R: Guinardia
R: Hemiaulus
R: Eucampia
R: Fragilariopsis
R: Lauderia
R: Asteromphalus
Other:
C: Unknown flagellate
* Environmental Information *
Time: 7:45 am
Collector: P. Daniel/A. Trapp
Water Conditions (SCW)
Water Temperature: 15.8 C
Water Conditions: Calm
Water Color/Code: Green, 10G 3/6 (#32)
Water Visibility: 4 ft
Tide: Rising, High – 10:47, 3.7 ft
Surf Report: WNW swell, 4-6 ft
NDBC buoy 46042
– Significant wave height: 7.2 ft
– Swell height/direction: 6.6 ft, NW
– Wind wave height/direction: 3.3 ft, WNW
Weather Conditions (KudelaHawk)
Sky: Heavy marine layer
Air Temperature: 55.8 F (13.2 C)
Wind: 2 mph, NNE
Solar radiation: 40 watts/m^2
Monterey Wharf II
Wednesday, August 24, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Rare
– Dinophysis: Present
– Margalefidinium: Rare
* Impressions *
It was overcast with a slight drizzle at the wharf this morning. The water was still dark but slightly greener compared to last week. Visibility remained at 3 m. Lots of seaweed present at site and clogged the net. Chlorophyll increased compared to last week, with a significant increase in dinoflagellate abundance and diversity, however, diatoms remained dominant in the sample. Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium, and Akashiwo all appeared in the sample.
Dinoflagellates:
R: Akashiwo sanguinea
R: Prorocentrum gracile
P: Dinophysis spp.
P: Ceratium spp.
R: Gonyaulax spinifera
C: Protoperidinium spp.
R: Alexandrium spp.
R: Scrippsiella spp.
R: Gyrodinium spp. (pink tipped)
R: Gyrodinium spp. (grey green)
R: Polykrikos spp.
R: Cochlodinium spp.
R: Lingulodinium polyedrum
R: Boreadinium cf
R: Oxyphysis
R: Amylax
Diatoms:
P: Chaetoceros spp.
P: Thalassiosira spp.
R: Coscinodiscus spp.
P: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Tropidoneis spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Asteromphalus spp.
R: Leptocylindrus spp.
R: Asterionellopsis spp.
R: Cerataulina spp.
R: Detonula spp.
P: Eucampia
R: Entomoneis
Others:
R: Dictyocha spp.
R: Phaeocystis spp. (singletons and clumps)
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0818 PT
COLLECTOR: Jasmine Ruiz
Water Temperature: 18.39 °C
Water Conditions: Calm
Water Color: 10GY 3/4
Visibility: 3 m
Tide: Rising, 0.90 m, high at 1053 h
Chlorophyll: 8.780 mg/m^3 by in vivo RFU
Sky: overcast w/ slight drizzle, 100% cloud
Air Temperature: 13.89 °C
Wind: WSW, 3.58 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%