Santa Cruz Wharf
Wednesday, July 5, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: None
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Present
* Impressions *
Cool with the marine layer over the wharf this morning. Net tow similar to last week – mostly dinoflagellates and Ceratium were the most abundant. Margalefidinium increased in abundance this week with more 2- and 4-cell chains swimming around. Alexandrium decreased this week (relative abundance and counts) and mostly 4-cell chains were observed.
Dinoflagellates:
A: Ceratium
C: LRB
P: Protoperidinium
P: Prorocentrum
P: Margalefidinium
R: Alexandrium
R: Akashiwo
R: Dinophysis
R: Boreadinium
R: Gymnodinium
R: Oxyphysis
R: Polykrikos
Diatoms:
P: Thalassiosira
P: Guinardia
P: Eucampia
R: Chaetoceros
R: Coscinodiscus
R: Leptocylindrus
R: Lauderia
R: Dactyliosolen
R: Ditylum
R: Fragilariopsis
R: Pleurosigma
R: Nitzschia
R: Tropidoneis
Other:
R: Dictyocha
* Environmental Information *
Time: 8:30 am
Collector: MC/GG/HA
Water Conditions (SCW)
Water Temperature: 15.2 C
Water Conditions: Calm
Water Color/Code: Dark green, 5G 2/6 (#31)
Water Visibility: 6 ft
Tide: Rising, Low – 7:10, -1.6 ft
Surf Report: NW swell, 3-5 ft
NDBC buoy 46042
– Significant wave height: 4.6 ft
– Swell height/direction: 4.6 ft, S
– Wind wave height/direction: 1.0 ft, W
Weather Conditions (KudelaHawk)
Sky: Marine layer
Air Temperature: 54.5 F (12.5 C)
Wind: None
Solar radiation: 138 watts/m^2
Monterey Wharf II
Wednesday, July 5, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
This morning there was a slight breeze on the wharf. The surface water was relatively calm and looked glassy in the distance. Several boats were docked near my site. The sky was filled with clouds. The water this week was a slightly darker green than last week with a visibility of 3.0m. Unfortunately, there was technical difficulty measuring chlorophyll this week ): Species that were common in the water included Ditylum, Thalassiosira, and Cylindrotheca. Species that were present in the water included Eucampia, Guinardia, Prorocentrum, and Ceratium. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium, and Akashiwo sanguinea.
Dinoflagellates:
R: Akashiwo sanguinea
P: Prorocentrum spp.
R: Dinophysis spp.
P: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Noctiluca spp.
R: Scrippsiella spp.
R: Gyrodinium spp. (pink tipped)
R: Polykrikos spp.
R: Cochlodinium spp.
R: Oxyphysis
R: Amylax
Diatoms:
R: Chaetoceros spp.
C: Thalassiosira spp.
R: Coscinodiscus spp.
R: Pseudo-nitzschia spp.
C: Ditylum spp.
P: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
C: Cylindrotheca spp.
R: Licmophora spp.
R: Odontella spp.
R: Leptocylindrus spp.
R: Asterionellopsis spp.
R: Detonula spp.
R: Striatella spp.
P: Eucampia
Others:
R: Dictyocha spp.
R: Acantharians
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0740 PT
COLLECTOR: Hannah McGrath
Water Temperature: 17.3°C
Water Conditions: Calm
Water Color: 10GY 2/4
Visibility: 3.0 m
Tide: Rising, -0.40 m, high at 1400 h
Sky: Cloudy, 100% cloud
Air Temperature: 12.78°C
Wind: NA, 2.24 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%