Santa Cruz Wharf
Wednesday, May 10, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Abundant
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare
* Impressions *
Overcast at the wharf this am. Net tow continues to be mostly diatoms (with an increase in detritus/debris), but phytoplankton biomass decreased this week. The assemblage shifted and Pseudo-nitzschia were the most abundant. Only P. australis cells were seen in the probed counts this week and the cell concentration decreased by half. Alexandrium counts also decreased this week.
Dinoflagellates:
R: Protoperidinium
R: Ceratium
R: Dinophysis
R: Alexandrium
R: Gymnodinium
R: Margalefidinium
R: Polykrikos
R: Boreadinium
R: Gonyaulax
Diatoms:
A: Pseudo-nitzschia
P: Skeletonema
P: Thalassiosira
P: Fragilariopsis
P: Paralia
R: Chaetoceros
R: Guinardia
R: Dactyliosolen
R: Thalassiothrix
R: Lauderia
R: Eucampia
R: Coscinodiscus
R: Ditylum
R: Odontella
R: Asteromphalus
R: Navicula
R: Pleurosigma
R: Rhizosolenia
R: Tropidoneis
* Environmental Information *
Time: 8:30 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 12.7 C
Water Conditions: Calm
Water Color/Code: Green, 10GY 2/4 (#30)
Water Visibility: 3 ft
Tide: Falling, Low – 9:36, -1.0 ft
Surf Report: WNW swell, 3-4 ft
NDBC buoy 46042
– Significant wave height: 5.6 ft
– Swell height/direction: 4.9 ft, WNW
– Wind wave height/direction: 2.3 ft, NW
Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 53.8 F (12.1 C)
Wind: 4 mph, SSW
Solar radiation: 93 watts/m^2
Monterey Wharf II
Wednesday, May 10, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Abundant
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
On my drive to the sampling site it drizzled. This morning it was windy and smelled fishy. The sky was filled with clouds. There was no fog and I could see the horizon clearly. The surface water was wavy. The water this week was bluer than last week with a visibility of 7.0m. Chlorophyll significantly decreased from last week. Diatoms dominated the water column. P. nitzschia was abundant. Tintinnids were common. Species that were present in the water were Chaetoceros and Leptocylindrus. The HAB species that were observed in the water this morning included P. nitzschia, Dinophysis and Akashiwo sanguinea.
Dinoflagellates:
R: Akashiwo sanguinea
R: Prorocentrum spp.
R: Dinophysis spp.
R: Ceratium spp.
P: Protoperidinium spp.
R: Scrippsiella spp.
R: Gyrodinium spp. (pink tipped)
R: Polykrikos spp.
R: Lingulodinium polyedrum
R: Amylax
Diatoms:
P: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
A: 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: Bacillaria spp.
R: Licmophora spp.
R: Asteromphalus spp.
P: Leptocylindrus spp.
R: Asterionellopsis spp.
R: Proboscia spp.
R: Detonula spp.
R: Eucampia
Others:
R: Larvaceans
Zooplankton:
C: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0723 PT
COLLECTOR: Hannah McGrath
Water Temperature: 13.61°C
Water Conditions: wavy
Water Color: 5G 2/6
Visibility: 7.0 m
Tide: Falling, 0.06 m, low at 0930 h
Chlorophyll: 1.620mg/m^3 by in vivo RFU
Sky: gloomy, 100% cloud
Air Temperature:12.22°C
Wind: NA, 3.80m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%