Week of April 22, 2024

Santa Cruz Wharf

Wednesday, April 24, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Present
– Dinophysis: Common
– Margalefidinium: Rare

* Impressions *
Overcast at the wharf this morning.  Water temperature increased 2C this week.  The detritus/debris in the net tow dropped off, but the phytoplankton biomass was similar to last week.  With the warmer water came a shift in the phytoplankton assemblage and dinoflagellates dominated the assemblage this week.  Akashiwo was the most abundant.  Pseudo-nitzschia were seriata size, but no P. australis or P. multiseries were detected in the probe counts.  Alexandrium were looking happy (4 and 8 cell chains zooming around) and the cell count increased an order of magnitude.

Dinoflagellates:
A: Akashiwo
C: LRB
C: Dinophysis
P: Prorocentrum
P: Ceratium
P: Alexandrium

R: Protoperidinium
R: Gymnodinium
R: Boreadinium
R: Margalefidinium
R: Polykrikos
R: Scrippsiella
R: Oxyphysis

Diatoms:
P: Guinardia

R: Dactyliosolen
R: Pseudo-nitzschia
R: Thalassionema
R: Thalassiosira
R: Asteromphalus
R: Coscinodiscus
R: Pleurosigma
R: Detonula
R: Licmophora

Other:
P: Unknown flagellate

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 14.1 C
Water Conditions: Choppy
Water Color/Code: Dark green/brown, 5G 2/6 (#31)
Water Visibility: 7 ft
Tide: Rising, High – 11:19, 3.7 ft
Surf Report: WNW swell, 2-3 ft

Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 57.4 F (14.1 C)
Wind: 6 mph, ENE
Solar radiation: 201 watts/m^2

Monterey Wharf II

Wednesday, April 24, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Present
– Dinophysis: Present
– Margalefidinium: Rare

* Impressions *
The wharf this morning was breezy and cloudy. The surface of the water was calm and there was no detritus. In the distance you could see the outline of the mountains. The water this week was slightly greener than two weeks ago with a visibility of 6.5m. Chlorophyll slightly increased from two weeks ago. Diatoms dominated the water column. Guinardia was common in the water. Ceratium, Akashiwo, Protoperidinium, Alexandrium, and Dinophysis were present in the water. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium, and Akashiwo sanguinea.

Dinoflagellates:
P: Akashiwo sanguinea
R: Prorocentrum spp.
P: Dinophysis spp.
P: Ceratium spp.
R: Gonyaulax spinifera
P: Protoperidinium spp.
P: Alexandrium spp.
R: Scrippsiella spp.
R: Gyrodinium spp. (pink tipped)
R: Polykrikos spp.
R: Cochlodinium spp.
R: Pyrophacus spp.
R: Amylax

Diatoms:
R: Thalassiosira spp.
R: Coscinodiscus spp.
R: Pseudo-nitzschia spp.
R: Ditylum spp.
C: Guinardia spp.
R: Pleurosigma spp.
R: Thalassionema spp.
R: Tropidoneis spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Asteromphalus spp.
R: Asterionellopsis spp.
R: Stephanopyxis spp.
R: Proboscia spp.
R: Detonula spp.
R: Eucampia

Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs
R: Larvacean

* Environmental Information *
TIME: 0703 PT
COLLECTOR: Hannah McGrath

Water Temperature: 13.2°C
Water Conditions: calm
Water Color: 10GY 2/4
Visibility: 6.5 m
Tide: Rising, 0 m, high at 1213 h
Chlorophyll: 20.55mg/m^3 by in vivo RFU

Sky: patchy clouds, 95% cloud
Air Temperature: 12.22°C
Wind: offline, 2.68m/S

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of April 15, 2024

Santa Cruz Wharf

Wednesday, April 17, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
Sunny and cool at the wharf this morning.  Phytoplankton biomass was similar to last week, but there was a dramatic increase in the detritus/debris in the net tow this week.  Diatom diversity remains high and no genus was overtly abundant this week.  Pseudo-nitzschia were seriata size and P. multiseries were detected in the probe counts.  Alexandrium counts were the same as last week.

Dinoflagellates:
P: Prorocentrum
P: Akashiwo
P: Protoperidinium
P: LRB

R: Ceratium
R: Gyrodinium
R: Dinophysis
R: Alexandrium

Diatoms:
C: Guinardia
C: Dactyliosolen
P: Meuniera
P: Pseudo-nitzschia
P: Thalassionema

R: Skeletonema
R: Lauderia
R: Thalassiosira
R: Leptocylindrus
R: Navicula
R: Chaetoceros
R: Ditylum
R: Eucampia
R: Odontella
R: Asteromphalus
R: Coscinodiscus
R: Pleurosigma
R: Paralia
R: Proboscia
R: Actinoptychus
R: Cylindrotheca
R: Detonula
R: Licmophora
R: Nitzschia
R: Stephanopyxis
R: Entomoneis

Other:
P: Unknown flagellate

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 12.5 C
Water Conditions: Calm
Water Color/Code: Green/brown, 10GY 3/4 (#29)
Water Visibility: 5 ft
Tide: Falling, High – 6:29, 4.2 ft
Surf Report: NW swell, 5-7 ft

Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 55.0 F (12.8 C)
Wind: 2 mph, E
Solar radiation: 300 watts/m^2

Monterey Wharf II

No sample this week

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of April 8, 2024

Santa Cruz Wharf

Wednesday, April 10, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
Fog clearing out to sunny skies this morning.  Phytoplankton biomass decreased dramatically from last week and the net tow was mostly detritus/debris.  Phytoplankton diversity remained high and the assemblage was mostly Chaetoceros.  Pseudo-nitzschia were seriata-size (relative abundance increased, but absolute abundance decreased) and no P. australis or P. multiseries were detected in the probed counts.  Alexandrium counts decreased by an order of magnitude.

Dinoflagellates:
P: LRB

R: Scrippsiella
R: Ceratium
R: Gymnodinium
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Dinophysis
R: Alexandrium
R: Boreadinium
R: Oxyphysis

Diatoms:
C: Chaetoceros
C: Pseudo-nitzschia
C: Skeletonema
P: Lauderia
P: Thalassiosira
P: Leptocylindrus
P: Navicula

R: Thalassionema
R: Ditylum
R: Guinardia
R: Eucampia
R: Odontella
R: Asteromphalus
R: Coscinodiscus
R: Pleurosigma
R: Paralia
R: Proboscia
R: Helicotheca

Other:
P: Unknown flagellate

R: Cluster-flagellate
R: Pyramamonas

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 12.8 C
Water Conditions: Calm
Water Color/Code: Dark blue/green, 10BG 2/6 (#14)
Water Visibility: 5 ft
Tide: Rising, Low – 6:37, -0.8 ft
Surf Report: NW swell, 4-5 ft

Weather Conditions (KudelaHawk)
Sky: Fog (clearing)
Air Temperature: 50.4 F (10.2 C)
Wind: 1 mph, ESE
Solar radiation: 266 watts/m^2

Monterey Wharf II

Wednesday, April 10, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: Rare

* Impressions *
The wharf this morning was very foggy. The sky was full of clouds and there was a slight mist. The surface of the water was relatively calm. Several clumps of kelp were on the surface of the water. The water this week was the same color as last week with a visibility of 5.5m. Diatoms dominated the water column. Ceratium and Guinardia were common in the water. Coscinodiscus, Licmophora, and Akashiwo sanguinea were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis, Cochlodinium, and Akashiwo sanguinea.

Dinoflagellates:
P: Akashiwo sanguinea
R: Prorocentrum spp.
R: Dinophysis spp.
C: Ceratium spp.
R: Protoperidinium spp.
R: Alexandrium spp.
R: Scrippsiella spp.
R: Oxyphysis
R: Pyrophacus spp.
R: Amylax

Diatoms:
R: Chaetoceros spp.
R: Thalassiosira spp.
P: Coscinodiscus spp.
R: Pseudo-nitzschia spp.
R: Ditylum spp.
C: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Skeletonema spp.
R: Tropidoneis spp.
R: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
P: Licmophora spp.
R: Leptocylindrus spp.
R: Asterionellopsis spp.
R: Proboscia spp.

* Environmental Information *
TIME: 0746 PT
COLLECTOR: Hannah McGrath

Water Temperature: 13.8°C
Water Conditions: calm
Water Color: 5G 2/6
Visibility: 5.5 m
Tide: Rising, -0.09 m, high at 1303 h
Chlorophyll: 15.17mg/m^3 by in vivo RFU

Sky: cloudy/ foggy/ misting, 100% cloud
Air Temperature: 11.11°C
Wind: offline, 2.24m/S

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of April 1, 2024

Santa Cruz Wharf

Wednesday, April 3, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
Another cold and overcast morning at the wharf with rain forecasted for Thursday.  Net tow was mostly diatoms and phytoplankton biomass increased dramatically this week.  The phytoplankton assemblage was mostly Chaetoceros (several different species), but there was an increase in phytoplankton diversity (for both diatoms and dinoflagellates) as well.  Pseudo-nitzschia abundance increased in the net tow and both P. australis and P. multiseries cell counts increased.  Alexandrium were also detected in the probe counts.

Dinoflagellates:
R: LRB
R: Scrippsiella
R: Ceratium
R: Gymnodinium
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Dinophysis
R: Gyrodinium
R: Boreadinium
R: Polykrikos
R: Noctiluca

Diatoms:
A: Chaetoceros
C: Pseudo-nitzschia
P: Guinardia
P: Eucampia
P: Thalassiosira
P: Thalassionema
P: Ditylum

R: Skeletonema
R: Detonula
R: Asteromphalus
R: Coscinodiscus
R: Pleurosigma
R: Stephanopyxis
R: Asterionellopsis
R: Lauderia
R: Proboscia
R: Rhizosolenia
R: Thalassiothrix
R: Entomoneis
R: Licmophora

Other:
R: Unknown flagellate
R: Dictyocha

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 13.2 C
Water Conditions: Calm
Water Color/Code: Green, 5BG 2/6 (#15)
Water Visibility: 8 ft
Tide: Falling, High – 5:51, 4.9 ft
Surf Report: WNW swell, 4-6 ft

Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 51.3 F (10.7 C)
Wind: 3 mph, WNW
Solar radiation: 121 watts/m^2

Monterey Wharf II

Wednesday, April 3, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: None
– Dinophysis: None
– Margalefidinium: None

* Impressions *
It was cloudy this morning. There was a slight breeze. The surface of the water was calm. No sail boats were docked but there were lots of fishermen and tourists on the wharf. The water this week was more blue than last week. Diatoms dominated the water column. Chaetoceros was abundant in the water. Pseudo-nitzschia was common. Ditylum was present. The HAB species that were observed in the water this morning included Pseudo-nitzschia and Akashiwo sanguinea.

Dinoflagellates:
R: Akashiwo sanguinea
R: Prorocentrum spp.
R: Protoperidinium spp.
R: Gyrodinium spp
R: Polykrikos spp.
R: Pyrophacus spp.
R: Amylax

Diatoms:
A: Chaetoceros spp.
R: Coscinodiscus spp.
C: Pseudo-nitzschia spp.
P: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Licmophora spp.
R: Odontella spp.
R: Asterionellopsis spp.
R: Eucampia
R: Lioloma

Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs

* Environmental Information *
TIME: 0753 PT
COLLECTOR: Hannah McGrath

Water Temperature: 14.0°C
Water Conditions: calm
Water Color: 5G 2/6
Visibility: NA
Tide: Falling, 1.19 m, low at 1331 h

Sky: cloudy, 100% cloud
Air Temperature: 11.11°C
Wind: offline, 1.34m/S

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of March 25, 2024

Santa Cruz Wharf

Wednesday, March 27, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Rare
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
Overcast and cold at the wharf this morning with rain forecasted later in the day.  Phytoplankton biomass decreased this week and the assemblage was more of an even mix of diatoms and dinoflagellates.  The unknown flagellate and Chaetoceros were the most abundant again this week.  Pseudo-nitzschia were seriata size, P. australis counts remained the same as last week.  No P. multiseries or Alexandrium were detected.

Dinoflagellates:
P: LRB
P: Scrippsiella

R: Ceratium
R: Gymnodinium
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Dinophysis
R: Heterocapsa
R: Boreadinium

Diatoms:
C: Chaetoceros
P: Eucampia
P: Skeletonema

R: Pseudo-nitzschia
R: Paralia
R: Thalassiosira
R: Thalassionema
R: Asteromphalus
R: Coscinodiscus
R: Pleurosigma
R: Odontella
R: Navicula
R: Proboscia
R: Entomoneis
R: Cylindrotheca

Other:
C: Unknown flagellate

* Environmental Information *
Time: 8:05 am
Collector: P. Daniel

Water Conditions (SCW)
Water Temperature: 13.2 C
Water Conditions: Calm
Water Color/Code: Green, 5G 2/6 (#31)
Water Visibility: 5 ft
Tide: Rising, Low – 6:37, 0.6 ft
Surf Report: WNW swell, 4-6 ft

Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 48.4 F (9.1 C)
Wind: 4 mph, W
Solar radiation: 29 watts/m^2

Monterey Wharf II

Wednesday, March 27, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Abundant
– Alexandrium: None
– Dinophysis: None
– Margalefidinium: None

* Impressions *
The wharf this morning was beautiful and sunny with a slight breeze! There were several sea lions and sea otters out and about. The surface of the water was relatively calm. The water this week was a slightly darker green than last week. Diatoms dominated the water column. Pseudo-nitzschia increased from last week. Pseudo-nitzschia was abundant in the water. Chaetoceros was common. Akashiwo was present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, and Akashiwo sanguinea.

Dinoflagellates:
P: Akashiwo sanguinea
R: Prorocentrum spp.
R: Ceratium spp.
R: Protoperidinium spp.
R: Gyrodinium spp. (pink tipped)

Diatoms:
C: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
A: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Lauderia spp.
R: Navicula spp.
R: Bacillaria spp.
R: Licmophora spp.
R: Leptocylindrus spp.
R: Eucampia

Others:
R: sponge spicule

Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs

* Environmental Information *
TIME: 0746 PT
COLLECTOR: Hannah McGrath

Water Temperature: 13.5°C
Water Conditions: calm
Water Color: 10Y 2/2
Tide: Rising, 0.30 m, high at 1250 h

Sky: sunny/ clear skies, 10% cloud
Air Temperature: 11.11°C
Wind: offline, 0.45m/S

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of March 18, 2024

Santa Cruz Wharf

Wednesday, March 20, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
Another cool and sunny morning at the wharf.  Dramatic decrease in detritus/debris this week and phytoplankton biomass was about the same.  The assemblage remains mostly diatoms, but dinoflagellate numbers are on increasing.  Chaetoceros and an unknown flagellate were the most abundant.  Pseudo-nitzschia were seriata size and only P. australis were detected in the probed counts.

Dinoflagellates:
R: LRB
R: Ceratium
R: Gyrodinium
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Polykrikos
R: Dinophysis
R: Alexandrium
R: Scrippsiella
R: Boreadinium

Diatoms:
C: Chaetoceros
P: Eucampia
P: Pseudo-nitzschia

R: Paralia
R: Skeletonema
R: Thalassiosira
R: Lauderia
R: Ditylum
R: Thalassionema
R: Asteromphalus
R: Coscinodiscus
R: Pleurosigma
R: Licmophora
R: Leptocylindrus
R: Fragilariopsis
R: Proboscia
R: Entomoneis

Other:
C: Unknown flagellate

R: Ebria
R: Pyramamonas

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 14.3 C
Water Conditions: Calm
Water Color/Code: Green, 10GY 3/4 (#29)
Water Visibility: 5 ft
Tide: Falling, High – 8:00, 4.9 ft
Surf Report: WNW swell, 4-6 ft

Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 51.8 F (11 C)
Wind: 3 mph, W
Solar radiation: 298 watts/m^2

Monterey Wharf II

Wednesday, March 20, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: Rare
– Dinophysis: Present
– Margalefidinium: None

* Impressions *
The wharf this morning the sun was shining bright behind a layer of fog and haze. There was a slight breeze. Many seabirds were on the surface of the water. The surface of the water had rolling waves. The water this week was a mild green. Diatoms dominated the water column. Chaetoceros, Pseudo-nitzschia, and Skeletonema were common in the water. Akashiwo, Dinophysis, and Ceratium were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, Dinophysis and Akashiwo sanguinea.

Dinoflagellates:
P: Akashiwo sanguinea
R: Prorocentrum spp.
P: Dinophysis spp.
P: Ceratium spp.
R: Protoperidinium spp.
R: Alexandrium spp.
R: Gyrodinium spp.
R: Polykrikos spp.
R: Lingulodinium polyedra
R: Heterocapsa niei
R: Amylax

Diatoms:
C: Chaetoceros spp.
R: Thalassiosira spp.
R: Coscinodiscus spp.
C: Pseudo-nitzschia spp.
R: Ditylum spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
C: Skeletonema spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Licmophora spp.
R: Leptocylindrus spp.
R: Eucampia

Others:
R: Dictyocha spp.

Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs

* Environmental Information *
TIME: 0744 PT
COLLECTOR: Hannah McGrath

Water Temperature: 14.1°C
Water Conditions: rolling waves
Water Color: 5Y 2/2
Tide: Rising, 149 m, high at 0758 h

Sky: foggy/cloudy, 100% cloud
Air Temperature: 12.22°C
Wind: NW, 0.45m/S

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of March 11, 2024

Santa Cruz Wharf

Wednesday, March 13, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
Cool and sunny at the wharf this morning.  Detritus/debris increased in the net tow this week and phytoplankton biomass decreased.  The assemblage remains mostly diatoms and Skeletonema and Chaetoceros were the most abundant.  Pseudo-nitzschia were seriata-size and chains were shorter (~5c cell length).  P. australis counts decreased by half from last week.  No P. multiseries or Alexandrium were detected.

Dinoflagellates:
R: LRB
R: Ceratium
R: Gymnodinium
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Polykrikos
R: Dinophysis
R: Noctiluca

Diatoms:
C: Skeletonema
C: Chaetoceros
P: Thalassiosira
P: Pseudo-nitzschia
P: Paralia

R: Guinardia
R: Lauderia
R: Eucampia
R: Ditylum
R: Asterionellopsis
R: Coscinodiscus
R: Pleurosigma
R: Dactyliosolen
R: Hemiaulus
R: Odontella
R: Proboscia
R: Entomoneis

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 13.2 C
Water Conditions: Calm
Water Color/Code: Green, 10GY 3/4 (#29)
Water Visibility: 3 ft
Tide: Rising, Low – 7:46, 0.0 ft
Surf Report: WNW swell, 6-10 ft

NDBC buoy 46042 (recovered 15Dec23)
– Significant wave height: NA
– Swell height/direction: NA
– Wind wave height/direction: NA

Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 49.3 F (9.6 C)
Wind: 3 mph, NNW
Solar radiation: 184 watts/m^2

Monterey Wharf II

*** Offline until further notice ***

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of March 4, 2024

Santa Cruz Wharf

Wednesday, March 6, 2023

* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: None
– Margalefidinium: None

* Impressions *
Overcast and cool morning at the wharf.  Net tow remains mostly detritus/debris and phytoplankton biomass decreased slightly this week.  Assemblage remains mostly diatoms and mostly Skeletonema.  Pseudo-nitzschia were seriata-size, no P. multiseries were detected and P. australis counts decreased an order of magnitude.  Alexandrium were seen in the probed counts, but not in the net tow.

Dinoflagellates:
R: LRB
R: Ceratium
R: Gyrodinium
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Boreadinium
R: Polykrikos
R: Margalefidinium-like (1/3 smaller, doublets more offset)
R: Heterocapsa

Diatoms:
A: Skeletonema
C: Chaetoceros
P: Thalassiosira
P: Pseudo-nitzschia

R: Guinardia
R: Lauderia
R: Eucampia
R: Ditylum
R: Asterionellopsis
R: Coscinodiscus
R: Pleurosigma
R: Thalassionema
R: Hemiaulus
R: Odontella
R: Asteromphalus
R: Entomoneis

* Environmental Information *
Time: 8:30 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 13.5 C
Water Conditions: Calm
Water Color/Code: Green/brown, 10GY 3/4 (#29)
Water Visibility: 4 ft
Tide: Falling, High – 6:21, 5.7 ft
Surf Report: WNW swell, 3-4 ft

NDBC buoy 46042 (recovered 15Dec23)
– Significant wave height: NA
– Swell height/direction: NA
– Wind wave height/direction: NA

Weather Conditions (KudelaHawk)
Sky: Overcast
Air Temperature: 52.5 F (11.4 C)
Wind: 5 mph, W
Solar radiation: 119 watts/m^2

Monterey Wharf II

*** Offline until further notice ***

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of February 26, 2024

Santa Cruz Wharf

Wednesday, February 28, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: None
– Margalefidinium: None

* Impressions *
Sunny and cool at the wharf this morning.  The net tow was still mostly detritus/debris, but phytoplankton biomass increased dramatically this week.  Assemblage was mostly diatoms, led by Skeletonema.  Pseudo-nitzschia were seriata-size and the chains were longer.  P. australis counts increased two orders of magnitude this week, while P. multiseries decreased.

Dinoflagellates:
R: LRB
R: Ceratium
R: Gymnodinium
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Boreadinium
R: Polykrikos
R: Margalefidinium-like (1/3 smaller, doublets more offset)

Diatoms:
A: Skeletonema
C: Chaetoceros
P: Thalassiosira
P: Pseudo-nitzschia

R: Guinardia
R: Lauderia
R: Eucampia
R: Ditylum
R: Asterionellopsis
R: Coscinodiscus
R: Pleurosigma
R: Thalassionema
R: Hemiaulus
R: Lithodesmium
R: Actinoptychus
R: Tropidoneis

Other:
P: Ebria

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 13.9 C
Water Conditions: Calm
Water Color/Code: Green/brown, 5GY 5/6 (#27)
Water Visibility: 3 ft
Tide: Rising, Low – 6:40, 1.4 ft
Surf Report: NW swell, 3-4 ft

NDBC buoy 46042 (recovered 15Dec23)
– Significant wave height: NA
– Swell height/direction: NA
– Wind wave height/direction: NA

Weather Conditions (KudelaHawk)
Sky: Sunny
Air Temperature: 52.3 F (11.3 C)
Wind: 2 mph, W
Solar radiation: 375 watts/m^2

Monterey Wharf II

*** Offline until further notice ***

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%

Week of February 19, 2024

Santa Cruz Wharf

Wednesday, February 21, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Present
– Alexandrium: None
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
Large swell and rain over the long weekend.  Partly cloudy and cool at the wharf this morning and the sampling site was in the San Lorenzo River plume.  The net tow once again was mostly detritus/debris and it was difficult to see cells.  Phytoplankton biomass did increase this week and diatoms remained the dominant group.  Chaetoceros was the most abundant, but Thalassiosira and Skeletonema also increased in number.  Pseudo-nitzschia were seriata-size and both P. australis and P. multiseries were counted this week.

Dinoflagellates:
P: LRB

R: Ceratium
R: Dinophysis
R: Prorocentrum
R: Protoperidinium
R: Akashiwo
R: Lingulodinium

Diatoms:
C: Chaetoceros
C: Skeletonema
C: Thalassiosira
P: Pseudo-nitzschia
P: Detonula
P: Paralia

R: Guinardia
R: Lauderia
R: Rhizosolenia
R: Ditylum
R: Coscinodiscus
R: Pleurosigma
R: Thalassionema
R: Actinoptychus
R: Tropidoneis

Other:
R: Ebria
R: Pyramamonas

* Environmental Information *
Time: 9:00 am
Collector: M. Conci

Water Conditions (SCW)
Water Temperature: 13.5 C
Water Conditions: Calm, small swell
Water Color/Code: Green/brown, 5GY 3/4 (#28)
Water Visibility: 1 ft
Tide: Falling, High – 8:02, 5.6 ft
Surf Report: WNW swell, 5-7 ft

NDBC buoy 46042 (recovered 15Dec23)
– Significant wave height: NA
– Swell height/direction: NA
– Wind wave height/direction: NA

Weather Conditions (KudelaHawk)
Sky: Partly cloudy
Air Temperature: 50 F (10 C)
Wind: 4 mph, N
Solar radiation: 144 watts/m^2

Monterey Wharf II

Wednesday, February 21, 2024

* Quick HAB Observations *
– Pseudo-nitzschia: Common
– Alexandrium: Rare
– Dinophysis: Rare
– Margalefidinium: None

* Impressions *
The sunrise this morning was beautiful! Not a cloud in the sky. The sun was out and shining. There were small waves on the surface and a slight breeze. The water this week was a darker green than last week with a visibility of 6.5m. Chlorophyll increased from last week (visually using RAI). Diatoms dominated the water column. Chaetoceros and Pseudo-nitzschia were common in the water. Lauderia, Thalassiosira, and Ditylum were present. The HAB species that were observed in the water this morning included Pseudo-nitzschia, Alexandrium, and Dinophysis.

Dinoflagellates:
R: Prorocentrum spp.
R: Dinophysis spp.
R: Ceratium spp.
R: Protoperidinium spp.
R: Alexandrium spp.
R: Oxyphysis
R: Amylax

Diatoms:
C: Chaetoceros spp.
P: Thalassiosira spp.
R: Coscinodiscus spp.
C: Pseudo-nitzschia spp.
P: Ditylum spp.
R: Guinardia spp.
R: Pleurosigma spp.
R: Rhizosolenia spp.
R: Thalassionema spp.
R: Skeletonema spp.
R: Tropidoneis spp.
P: Lauderia spp.
R: Navicula spp.
R: Cylindrotheca spp.
R: Asteromphalus spp.
R: Asterionellopsis spp.
R: Dactyliosolen spp.
R: Detonula spp.
R: Eucampia
R: Entomoneis

Others:
R: Dictyocha spp.

Zooplankton:
R: fecal pellets, nauplii, tintinnids, calanoids, fish larvae, eggs

* Environmental Information *
TIME: 0719 PT
COLLECTOR: Hannah McGrath

Water Temperature: 13.0°C
Water Conditions: small waves
Water Color: 5GY 2/2
Visibility: 6.5 m
Tide: Rising, 1.65 m, high at 0801 h
Chlorophyll: na

Sky: sunny/ clear skies, 0% cloud
Air Temperature: 12.22°C
Wind: offline, 3.13m/S

Rare (R): <1% ~~~ Present (P): 1 – 9% ~~~ Common (C): 10 – 49% ~~~ Abundant (A): >= 50%