Santa Cruz Wharf
Wednesday, September 6, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Present
– Dinophysis: Common
– Margalefidinium: Rare
* Impressions *
Overcast and cool this morning at the wharf. Water temp dropped (2C) this week and phytoplankton biomass decreased as well. Net tow remains mostly dinoflagellates, but this week diatom diversity increased. Prorocentrum remains the most abundant. Alexandrium counts increased (4x) and Pn were both seriata- and delicatissima-size.
Dinoflagellates:
C: Prorocentrum
C: Protoperidinium
C: Dinophysis
P: LRB
P: Ceratium
P: Alexandrium
R: Margalefidinium
R: Oxyphysis
R: Akashiwo
R: Oxytoxum
R: Lingulodinium
Diatoms:
P: Skeletonema
R: Asterionellopsis
R: Thalassiosira
R: Chaetoceros
R: Pseudo-nitzschia
R: Odontella
R: Thalassionema
R: Pleurosigma
R: Proboscia
R: Thalassiothrix
R: Asteromphalus
R: Proboscia
R: Navicula
R: Entomoneis
Other:
P: Small ~3um round cells
R: Dictyocha
* Environmental Information *
Time: 8:45 am
Collector: M. Conci
Water Conditions (SCW)
Water Temperature: 16.0 C
Water Conditions: Choppy w/foam
Water Color/Code: Green, 10GY 5/6 (#11)
Water Visibility: 4 ft
Tide: Falling, Low – 9:28, 2.6 ft
Surf Report: NW swell, 4-6 ft
NDBC buoy 46042
– Significant wave height: 5.9 ft
– Swell height/direction: 5.9 ft, SSW
– Wind wave height/direction: 1.3 ft, WNW
Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 60.4 F (15.8 C)
Wind: 6 mph, E
Solar radiation: 87 watts/m^2
Monterey Wharf II
Wednesday, September 6, 2023
* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None
* Impressions *
This morning was cloudy and windy. There were lots of birds and fishermen. The surface of the water had many ripples. The water this week was slightly bluer than last week with the same visibility of 5.0m. Chlorophyll decreased from last week. Diatoms dominated the water column. Chaetoceros and Pseudo-nitzschia were common in the water. Pleurosigma was present in the water. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis and Akashiwo sanguinea.
Dinoflagellates:
R: Akashiwo sanguinea
R: Prorocentrum spp.
R: Dinophysis spp.
R: Ceratium spp.
R: Gonyaulax spinifera
R: Protoperidinium spp.
R: Alexandrium spp.
R: Pyrophacus spp.
R: Amylax
Diatoms:
C: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
C: Pseudo-nitzschia spp.
R: Guinardia spp.
P: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Odontella spp.
R: Asteromphalus spp.
R: Dactyliosolen spp.
R: Detonula spp.
R: Eucampia
R: Entomoneis
* Environmental Information *
TIME: 0648 PT
COLLECTOR: Hannah McGrath
Water Temperature: 15.1°C
Water Conditions: wavy
Water Color: 10G 2/6
Visibility: 5.0 m
Tide: Falling, 1.01 m, low at 0935 h
Chlorophyll: net: 0.257mg/m^3 by in vivo RFU
Sky: cloudy and windy, 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%