Santa Cruz Wharf
Wednesday, September 20, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Present
– Margalefidinium: Rare
* Impressions *
Overcast, cool, and a little smoky at the wharf this am (got 3 air quality warnings while out there). Net tow continues to be mostly dinoflagellates. The phytoplankton biomass was similar to last week and Prorocentrum was the most abundant. Pn were delicatisima-size and Alexandrium counts decreased an order of magnitude.
Dinoflagellates:
A: Prorocentrum
C: Akashiwo
C: Ceratium
P: Dinophysis
R: Protoperidinium
R: Alexandrium
R: Margalefidinium
R: Gymnodinium
R: Polykrikos
R: Oxyphysis
R: LRB
R: Gonyaulax
Diatoms:
R: Chaetoceros
R: Thalassiosira
R: Pseudo-nitzschia
R: Pleurosigma
R: Proboscia
R: Asteromphalus
R: Leptocylindrus
R: Fragilariopsis
R: Paralia
R: Thalassionema
Other:
R: Dictyocha
R: Oblong flagellate
* Environmental Information *
Time: 8:30 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 16.1 C
Water Conditions: Calm
Water Color/Code: Dark green, 10G 3/6 (#32)
Water Visibility: 5 ft
Tide: Rising, Low – 7:14, 2.4 ft
Surf Report: NW swell, 4-6 ft
NDBC buoy 46042
– Significant wave height: 9.5 ft
– Swell height/direction: 9.2 ft, WNW
– Wind wave height/direction: 1.0 ft, WNW
Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 58.3 F (14.6 C)
Wind: 2 mph, NNW
Solar radiation: 33 watts/m^2
Monterey Wharf II
Wednesday, September 20, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Abundant
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
The wharf was cloudy this morning. There was no breeze and the surface waters looked calm. The water this week was slightly greener than last week with a visibility of 3.5m. Chlorophyll remained relatively the same from last week. Diatoms dominated the water column. Pseudo-nitzschia was abundant. Meanwhile Chaetoceros and Akashiwo were common in the water. Prorocentrum was present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium, and Akashiwo sanguinea.
Dinoflagellates:
C: Akashiwo sanguinea
P: Prorocentrum spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Scrippsiella spp.
R: Gyrodinium spp.
R: Cochlodinium spp.
R: Lingulodinium polyedrum
R: Boreadinium cf
R: Pyrophacus spp.
R: Amylax
R: Heterocapsa spp.
Diatoms:
C: Chaetoceros spp.
R: Coscinodiscus spp.
A: Pseudo-nitzschia spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp..
R: Thalassionema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Asteromphalus spp.
R: Leptocylindrus spp.
R: Asterionellopsis spp.
R: Cerataulina spp.
R: Dactyliosolen spp.
R: Striatella spp.
R: Entomoneis
Others:
R: Dictyocha spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0651 PT
COLLECTOR: Hannah McGrath
Water Temperature: 16.3°C
Water Conditions: Calm
Water Color: 5G 2/6
Visibility: 3.5 m
Tide: Falling, 0.79m, low at 0719 h
Chlorophyll: net: 0.120mg/m^3 by in vivo RFU
Sky: cloudy, 100% cloud
Air Temperature: 15.00°C
Wind: offline, 2.68m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%