Santa Cruz Wharf
Wednesday, August 2, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
Cool with a marine layer at the wharf this am. Net tow again, similar to last week – assemblage was mostly diatoms and no noticeable change in phytoplankton biomass. For the 4th week in a row, Eucampia was the most abundant genus. Fewer Pseudo-nitzschia cells (seriata-size) were observed and no P. australis or P. multiseries were detected. Alexandrium counts dropped almost an order of magnitude from last week.
Dinoflagellates:
R: Ceratium
R: Margalefidinium
R: LRB
R: Protoperidinium
R: Prorocentrum
R: Alexandrium
R: Akashiwo
R: Dinophysis
R: Boreadinium
R: Gymnodinium
R: Oxyphysis
R: Polykrikos
R: Gyrodinium
Diatoms:
A: Eucampia
R: Guinardia
R: Detonula
R: Thalassiosira
R: Chaetoceros
R: Coscinodiscus
R: Lauderia
R: Skeletonema
R: Leptocylindrus
R: Ditylum
R: Pseudo-nitzschia
R: Pleurosigma
R: Navicula
R: Licmophora
R: Asteromphalus
R: Actinoptychus
R: Asterionellopsis
* Environmental Information *
Time: 8:30 am
Collector: MC/GG/HA
Water Conditions (SCW)
Water Temperature: 15.3 C
Water Conditions: Calm
Water Color/Code: Green, 10GY 2/4 (#30)
Water Visibility: 6 ft
Tide: Rising, Low – 6:00, -1.5 ft
Surf Report: NW swell, 1-2 ft
NDBC buoy 46042
– Significant wave height: 3.6 ft
– Swell height/direction: 3.3 ft, NW
– Wind wave height/direction: 1.0 ft, NW
Weather Conditions (KudelaHawk)
Sky: Marine layer
Air Temperature: 58.1 F (14.5 C)
Wind: 1 mph, S
Solar radiation: 145 watts/m^2
Monterey Wharf II
Wednesday, August 2, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: None
– Margalefidinium: None
* Impressions *
The wharf this morning was cloudy and lightly misting. There was no breeze or wind at my sampling site. The surface water was calm. Fog hugged the horizon. Many of the seabirds kept me company this morning. The water this week was slightly greener than last week with a visibility of 3.0m. The Eucampia bloom still persists. Chlorophyll increased from last week. Diatoms dominated the water column. Eucampia was abundant. The HAB species that were present in the water this morning included Pseudo-nitzschia, Alexandrium, and Akashiwo sanguinea.
Dinoflagellates:
R: Akashiwo sanguinea
R: Prorocentrum spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Noctiluca spp.
R: Gyrodinium spp. (grey green)
R: Polykrikos spp.
R: Oxyphysis
R: Pyrophacus spp.
R: Amylax
Diatoms:
R: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
R: 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: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Asteromphalus spp.
R: Asterionellopsis spp..
A: Eucampia
Others:
R: Dictyocha spp.
R: Acantharians
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0723 PT
COLLECTOR: Hannah McGrath
Water Temperature: 14.7°C
Water Conditions: glassy/calm
Water Color: 10Y 2/2
Visibility: 3.0m
Tide: Rising, 1.19 m, high at 1235 h
Chlorophyll: 32.139mg/m^3 by in vivo RFU
Sky: cloudy, 100% cloud
Air Temperature: 15.00°C
Wind: offline, 2.24m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%