Santa Cruz Wharf
Wednesday, April 12, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
Another clear and sunny morning at the wharf. Phytoplankton biomass increased slightly from last week (with another decrease in detritus/debris) and the phytoplankton assemblage continues to be mostly diatoms. Only a handful of dinoflagellates were observed and Thalassiosira and Skeletonema were the most abundant. Pseudo-nitzschia were seriata-size and both P. australis and P. multiseries were observed in the probed counts.
Dinoflagellates:
R: Ceratium
R: Protoperidinium
R: Dinophysis
Diatoms:
C: Thalassiosira
C: Skeletonema
C: Chaetoceros
P: Thalassionema
P: Detonula
P: Pseudo-nitzschia
P: Asterionellopsis
R: Odontella
R: Lauderia
R: Coscinodiscus
R: Ditylum
R: Rhizosolenia
R: Pleurosigma
R: Actinoptychus
R: Entomoneis
R: Tropidoneis
Other:
R: Ebria
* Environmental Information *
Time: 8:45 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 10.8 C
Water Conditions: Calm
Water Color/Code: Blue, 10G 3/6 (#32)
Water Visibility: 3 ft
Tide: Falling, Low – 11:08, -0.4 ft
Surf Report: NW swell, 3-5 ft
NDBC buoy 46042
– Significant wave height: 12.1 ft
– Swell height/direction: 8.2 ft, NW
– Wind wave height/direction: 8.5 ft, NW
Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 50.0 F (10.0 C)
Wind: 3 mph, E
Solar radiation: 348 watts/m^2
Monterey Wharf II
Wednesday, April 12, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
This morning was sunny but cold and very windy. The birds this morning were keeping me company. There were 5 boats docked near my sampling site. The surface water had lots of waves. In the distance, there were many white caps. In addition, there was fog along the horizon. The water this week was a much darker green than last week with a visibility of 2.0m. Chlorophyll significantly increased from last week. Both Chaetoceros and Asterionellopsis were common. While, P. nitzschia seriata, Lauderia, Thalassiosira, Detonula, and Skeletonema were present in the water. The HAB species that were observed in the water this morning included P. nitzschia and Dinophysis.
Dinoflagellates:
R: Dinophysis spp.
R: Protoperidinium spp.
R: Gyrodinium spp. (grey green)
R: Lingulodinium polyedrum
Diatoms:
C: Chaetoceros spp.
P: Thalassiosira spp.
R: Coscinodiscus spp.
P: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
P: Skeletonema spp.
R: Melosira spp.
P: Lauderia spp.
P: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Odontella spp.
R: Leptocylindrus spp.
C: Asterionellopsis spp.
R: Cerataulina spp.
P: Detonula spp.
R: Paralaria spp.
R: Striatella spp.
R: Entomoneis
Others:
R: Dictyocha spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0720 PT
COLLECTOR: Hannah McGrath
Water Temperature: 12.11°C
Water Conditions: wavy
Water Color: 10Y 2/2
Visibility: 2.0m
Tide: Falling, 0.70 m, low at 1100h
Chlorophyll: 28.339mg/m^3 by in vivo RFU
Sky: sunny/ clear skies, 0% cloud
Air Temperature: 10°C
Wind: SE, 6.26 m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%