Santa Cruz Wharf
Wednesday, August 31, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Common
– Margalefidinium: Present
* Impressions *
Marine layer burning off early this am. Bait ball remains at the wharf with lots of CSL and bird (pelicans, cormorants) feeding activity. Harbor seals and a snowy egret were also seen today. Phytoplankton biomass was similar to last week. The net tow remains mostly dinoflagellates with an increase in diatom numbers and diversity this week. Ceratium was the most abundant. Alexandrium cell counts decreased this week and the Pseudo-nitzschia observed were mostly delicatissima-size.
Dinoflagellates:
C: Ceratium
C: LRB
C: Dinophysis
P: Margalefidinium
P: Prorocentrum
P: Protoperidinium
P: Akashiwo
P: Gymnodinium
P: Oxyphysis
R: Alexandrium
R: Gyrodinium
Diatoms:
P: Navicula
P: Thalassiosira
R: Leptocylindrus
R: Guinardia
R: Hemiaulus
R: Eucampia
R: Pseudo-nitzschia
R: Fragilariopsis
R: Lauderia
R: Lithodesmium
R: Chaetoceros
R: Asteromphalus
R: Coscinodiscus
R: Pleurosigma
R: Ditylum
R: Lioloma
R: Proboscia
R: Thalassionema
R: Tropidoneis
Other:
P: Unknown flagellate
R: Dictyocha
* Environmental Information *
Time: 7:45 am
Collector: P. Daniel
Water Conditions (SCW)
Water Temperature: 15.2 C
Water Conditions: Calm
Water Color/Code: Green/blue, 5BG 2/6 (#15)
Water Visibility: 5 ft
Tide: Low – 7:20, 1.1 ft
Surf Report: S/NW swell, 2-5 ft
NDBC buoy 46042
– Significant wave height: 3.0 ft
– Swell height/direction: 2.3 ft, S
– Wind wave height/direction: 1.6 ft, WNW
Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 55.2 F (12.9 C)
Wind: 4 mph, W
Solar radiation: 32 watts/m^2
Monterey Wharf II
Wednesday, August 31, 2022
* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
It was partly cloudy near the horizon this morning. There was seaweed near our sampling site, a couple jellyfish, and a friendly California sea lion. The sun was rising from the east and peaking through the cloud coverage. There was no fog inshore or offshore. The color of the water was similar to last week. However, there was a lot more visibility in the water this week (6.5m) compared to last week (3m). Chlorophyll abundance stayed relatively the same as last week. There was a bloom of Chaetoceros. Pseudo-nitzschia abundance increased from last week. Alexandrium, Dinophysis, Cochlodinium, and Akashiwo all appeared in the sample.
Dinoflagellates:
R: Akashiwo sanguinea
R: Prorocentrum gracile
R: Dinophysis spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Scrippsiella spp.
R: Gyrodinium spp. (pink tipped)
R: Cochlodinium spp.
R: Gymnodinium spp
R: Oxyphysis
Diatoms:
A: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
C: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Odontella spp.
R: Asteromphalus spp.
R: Leptocylindrus spp.
P: Asterionellopsis spp.
R: Proboscia spp.
R: Detonula spp.
R: Eucampia
R: Lioloma
Others:
R: Dictyocha spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0745PT
COLLECTOR: Hannah McGrath
Water Temperature: 18.28 °C
Water Conditions: Calm
Water Color: 5Y 2/2
Visibility: 6.5 m
Tide: slack, 0.40 m; low at 0721h and high at 1350h
Chlorophyll: 9.420 mg/m^3 by in vivo RFU
Sky: clouds right above horizon, 55% cloud
Air Temperature: 13.89°C
Wind: ESE, 0.89m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%