Santa Cruz Wharf
Wednesday, July 24, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Rare
– Dinophysis: Present
– Margalefidinium: Rare
* Impressions *
It was warm and sunny at the wharf this morning. There was a dramatic decrease in dinoflagellates this week, resulting in the net tow being a more even mix of dinoflagellates and diatoms. Prorocentrum and an unknown flagellate were the most abundant. Pseudo-nitzschia were all delicatissima size this week in chains of 2-4 cells. Alexandrium counts increased an order of magnitude.
Dinoflagellates:
C: Prorocentrum
C: Akashiwo
P: Dinophysis
R: Ceratium
R: Alexandrium
R: Protoperidinium
R: Margalefidinium
R: Oxyphysis
R: Boreadinium
R: LRB
Diatoms:
P: Pseudo-nitzschia
P: Navicula
P: Fragilariopsis
P: Thalassiosira
R: Lauderia
R: Dactyliosolen
R: Chaetoceros
R: Thalassionema
R: Coscinodiscus
R: Asteromphalus
R: Licmophora
R: Nitzschia
R: Cylindrotheca
Other:
C: Unknown flagellate
R: Dictyocha
* Environmental Information *
Time: 9:40 am
Collector: R. Joshi
Water Conditions (SCW)
Water Temperature: 16.4 C
Water Conditions: Calm
Water Color/Code: Green, 5GY 3/4 (#28)
Water Visibility: 5 ft
Tide: Rising, Low – 7:37, -0.8 ft
Surf Report: NW swell, 3-4 ft
Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 64 F (17.8 C)
Wind: 2 mph, ESE
Solar radiation: 537 watts/m^2
Monterey Wharf
Wednesday, July 24, 2024
* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
The wharf this morning was sunny and warm with no breeze. Fog lined the horizon. The surface of the water was calm. The water this week was greener than last week with a visibility of 3.0m. Chlorophyll increased from last week. Dinoflagellates dominated the water column. Pseudo-nitzschia and Akashiwo were common. Cylindrotheca, Oxyphysis, and Prorocentrum were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis and Akashiwo sanguinea.
Dinoflagellates:
C: Akashiwo sanguinea
P: Prorocentrum spp.
R: Dinophysis spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Gyrodinium spp.
R: Polykrikos spp.
P: Oxyphysis
R: Pyrophacus spp.
R: Amylax
Diatoms:
R: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
C: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Thalassionema spp.
R: Lauderia spp.
R: Navicula spp.
P: Cylindrotheca spp.
R: Licmophora spp.
R: Asteromphalus spp.
R: Leptocylindrus spp.
R: Detonula spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0710 PT
COLLECTOR: Hannah McGrath
Water Temperature: 15.5°C
Water Conditions: calm waves
Water Color: 5Y 3/4
Visibility: 3.0 m
Tide: Falling, -0.21m, low at 0733 h
Chlorophyll: net: 2.065mg/m^3 by in vivo RFU
Sky: sunny/ clear skies, 10% cloud
Air Temperature: 16.11°C
Wind: offline, 0 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%