Santa Cruz Wharf
Wednesday, March 12, 2025
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
Overcast, drizzling, and windy this morning at the wharf. Brown pelicans feeding on the baitball off Main Beach. Despite the gloomy weather, the detritus/debris decreased this week and the net tow was mostly diatoms. Phytoplankton biomass increased dramatically this week, with mostly chain forming diatoms. Skeletonema and Chaetoceros were the most abundant. Alexandrium and Dinophysis made an appearance this week. Pseudo-nitzschia were seriata size.
Dinoflagellates:
R: Ceratium
R: Protoperidinium
R: Dinophysis
R: Gyrodinium
R: LRB
R: Alexandrium
Diatoms:
C: Skeletonema
C: Chaetoceros
C: Thalassiosira
P: Asterionellopsis
P: Detonula
P: Lauderia
P: Pseudo-nitzschia
R: Coscinodiscus
R: Pleurosigma
R: Asteromphalus
R: Eucampia
R: Guinardia
R: Odontella
R: Lithodesmium
R: Entomoneis
Other:
R: Phaeocystis
* Environmental Information *
Time: 8:30 am
Collector: P. Daniel
Water Conditions (SCW)
Water Temperature: 11.9 C
Water Conditions: Choppy w/swell
Water Color/Code: Green/blue, 10G 2/6 (#12)
Water Visibility: 4 ft
Tide: Rising, High – 9:50, 4.9 ft
Surf Report: NW swell, 3-4
NDBC buoy 46236
– Significant wave height: 1.4 m
– Swell height/direction: 0.9 m, WNW
– Wind wave height/direction: 1.1 m, WNW
Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 53.8 F (12.1 C)
Wind: 11 mph, ENE
Solar radiation: 14 watts/m^2
Monterey Wharf II
Wednesday, March 12, 2025
* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
The wharf was warm this morning. The sky was filled with clouds. The surface of the water was calm. The water smelled funky and was visibility greener than last week with a visibility of 2.0m. Chlorophyll significantly increased from last week. Diatoms dominated the water column. Chaetoceros, Skeletonema and Detonula were common in the water. Thalassiosira, Asterionellopsis, Pseudo-nitzschia, Proboscia and eggs were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, and Dinophysis.
Dinoflagellates:
R: Dinophysis spp.
R: Ceratium spp.
R: Protoperidinium spp.
R: Alexandrium spp.
R: Gyrodinium spp. (pink tipped)
R: Pyrophacus spp.
Diatoms:
C: Chaetoceros spp.
P: Thalassiosira spp.
P: Pseudo-nitzschia spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
C: Skeletonema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Odontella spp.
R: Asteromphalus spp.
R: Leptocylindrus spp.
P: Asterionellopsis spp.
R: Dactyliosolen spp.
P: Proboscia spp.
C: Detonula spp.
R: Eucampia
R: Entomoneis
R: Grammatophora
Others:
R: Dictyocha spp.
Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
* Environmental Information *
TIME: 0811 PT
COLLECTOR: Hannah McGrath
Water Temperature: 12.0°C
Water Conditions: calm
Water Color: 10Y 2/2
Visibility: 2.0 m
Tide: Rising, 1.31 m, high at 0956 h
Sky: cloudy, 100% cloud
Air Temperature: 12.22°C
Wind: offline, 1.34m/S
Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%