Seawater Data : Salinity and Temperature June 2015

Station Race Rocks   Lightstation
Month: June Year: 2015
Observer Lester B. Pearson College   of the Pacific
Date Time Sea Jar Hydro-   meter   No. Observed Density YSI Salinity YSI Temp °C
Temp. Temp.
°C °C
1 17:15 30.8 10.8
2 17:00 30.2 11.1
3 18:05 31.0 11.0
4 18:10 30.8 10.9
5 17:50 31.3 11.3
6 18:15 31.5 11.0
7 missed na na
8 6:07 31.1 9.8
9 21:07 31.1 10.3
10 21:27 30.8 10.3
11 21:07 30.8 10.5
12 20:47 29.6 11.0
13 16:03 30.2 11.2
14 17:00 11.8 12.2 10,802 23 30.4 11.3
15 18:14 30.2 11.3
16 18:00 31.0 11.5
17 18:00 31.1 11.4
18 17:30 31.3 11.1
19 20:32 31.6 10.2
20 21:47 31.5 10.5
21 21:42 31.3 10.7
22 21:40 30.3 11.0
23 21:57 30.6 11.1
24 20:05 30.8 12.4
25 20:00 30.8 11.8
26 20:10 30.6 12.0
27 20:30 30.1 12.2
28 20:45 30.2 12.4
29 21:00 30.4 12.3
30 21:00 30.4 12.2
Means 30.8 11.2

Recorded by Race Rocks Ecological Reserve Guardian for Lester B. Pearson College

Animal census

Link

Northern Elephant seals: 3

Harbour seals: 75

Pelagic cormorants: 3

Pigeons –guillemots: 75

Black oystercatchers: 2 couples

Canada geese: 4 adults and 7 goslings

Bold eagle: 1 adult

Glaucous -Winged gulls: 400 (a few young ones)

No whales

No shorebirds

Foggy day

Friday 26th

Around 11pm between Thursday and Friday the foghorn began its song. Thanks to my wax plugs set .It did the job! For Guy no problem he was already asleep and never wake up…so. Anyway in the morning a fog curtain was lingering over the States coast but was getting closer every minute after sunset. At 5h30 the foghorn went on again. We were in a cottony atmosphere and it was like that in and out for the rest of the day.

In the morning it was so nice to watch from the window the geese family waking up one bird after the other.

Later we had to put the desalinator on and the filter was changed (every 15 days) the generator those days are working with the sun power: Nice!

Boats around: In the morning a zodiac came with 5 to 8 people…apparently nobody had a life jacket! Because of the foggy day we had a lot less whale watchers than usual. Actually a pretty foggy day and not a hot day on Race Rocks! The horn? We are getting used to

This morning we saw the first 2 seagull chicks; easy enough from our window close to the stairs. As usual pictures time  today is anytime: can you imagine chicks fed on small and long fish like smelts. Those birds are common but so interesting to observe. Right now males bring back straw to their nest again: maybe to make them stronger and bigger to welcome the babies…

As chores: I did an inventory in the pharmacy box and kitchen to get rid of out of date products.

Last Large Oil tank Decommissioned

Thursday 25th

The wind was light, the currents mild, no difference between low and high tide. Maybe it explains why the seawater was so warm compared to a week before 12.4
The visibility too was amazingly good .We could see the American coast so clearly and so far around 20 miles away. We can consider that day as the first real summer day in Race rocks: no wind or so little 4knots a joke, north direction, a mirror as a sea. At 5:30 the forecast was an increase to 20 knots around noon in fact we got it at 5pm in the afternoon.

It was a big day in Race Rocks. I would say an historic one because the big diesel tank has been disconnected (8000l) for a small one (450l). And all this made possible because of the efficient power of the sun .2 plumbers spent the day on the rock. At the end they double-checked to be sure that there were no more air bubbles and put under pressure the pipes…so now the big tank is ready to be hauled ashore …but this is another story…The 2 guys were so happy with their unusual day: splashes on the open boat and a trip at lunch time to the top of the tower. But everything took an end…and alone we were again and it was our turn to climb the 91 stairs and to enjoy this beautiful scenery.

Speaking about boats around the protected area: around 8pm we were surprised to see a zodiac with divers …and they were busy taking back aboard 2 of them? Other sightseeing: a submarine vessel from Esquimalt with a white smoke in the wake.

The water sampling confirmed a pretty high water temperature 11.8 Celsius

Shift Switch

The almost constant wind of Race Rocks did not disappoint today. Although is started slowly, once it warmed up there was a steady blow from the west of 25 to 30 knots. The sky was mostly clear with a little fog coming and going late morning and high clouds spreading out from the mountains. The barometer peaked at close to 1019 hPA. and then started to fall in the afternoon. There is a strong wind warning in effect again for tomorrow with the prediction following the pattern of light winds in the morning and building in the afternoon. The last few evenings have been quite windy and rough and the forecast tomorrow has a 40% chance of rain in the late afternoon and evening, on top of the wind.

Two whale-watching boats came through the Ecological Reserve today. A Pedder Bay rental boat was observed fishing for rockfish in Rockfish Conservation Area which is closed to fishing. When I went out to take their photos they tried to move out of sight and ended up fishing about 50 feet off of Middle Rock. When I continued to document their activity they moved out close to the boundary and that is when the Pedder Bay folks showed up to encourage them to move out of the Reserve. That kind of support and community encouragement to follow the rules is really amazing. A big shout out to Pedder Bay Marina, thank you for making the effort for conservation. That kind of response will help keep your business sustainable.

sporty fishers

Things continued as expected today with the usual ecological happenings described in the the last few days’ Logs. Chunk and Floyd avoided each other a bit more today which is definitely a good thing for the gulls which don’t stand a chance when the big guys get out of control. Floyd is almost finished his moult with just a few vibrissae and wee scraps of old skin on his back to go. He has lost a tremendous amount of the bulk he brought ashore when he first arrived.

Floyd has lost not only his skin and fur but also ~30% of his weight, since he came ashore to moult.

Floyd has lost not only his skin and fur but also ~30% of his weight, since he came ashore to moult.

Killer Whales were in the vicinity in the early evening. A small pod of Biggs’ Killer Whales swam slowly westward through Race Passage and the whale watching boats were talking about the Southern Resident Killer Whales’ L-pod being a little further west.

There were no visitors and work was focused mainly on preparing and cleaning things for the next crew, Guy and Christine, who will start tomorrow. It has been a real privilege to be out in this special, bio-diverse and productive place and I look forward to returning and meeting the next wave of marine science students in September.

Small Seal Hauls On Bull Kelp

The wind blew steadily 25 to 30 knots from the west today, all day. The morning was relatively calm on the lee side but by early evening it was really rough all around Race Rocks. Cloudy morning skies gave way to a sun-dominated mix, of sun and clouds in the afternoon. There was no precipitation in spite of the clouds. Remarkably, the total annual rainfall here to date is ~22 cm, not much. The barometer climbed back up to 1016 hPA., before starting another little slide. The forecast is calling for sunshine with increasing cloud and continuing strong westerlies.

No vessels were observed in the Ecological Reserve during the day today. One whale watching vessel was observed working in the Reserve just at sunset.

Ecological happenings are all in motion and continue on the path that has been described over the last few days. The bull kelp growth may be slowing as evidenced by some epiphytic growth showing on a very small percentage of the “plants”.

These algae are super carbon fixers and not only crank out food, they also grow so thickly that they shelter the Sea Otter and today I saw a small Harbour Seal actually climbing out of the water onto the bull kelp. It is slippery stuff so I was surprised when I looked a few hours later: it was still there and had managed to dry off the upper part of its body while hauling on bull kelp.

 

Bull kelp is still actively growing.

I realized today that the Harbour Seals, of which there are a lot more (225 to 250) than Northern Elephant Seals (maximum count 35), may have had the short end of the stick when it comes to mentions in the Log entries. Maybe it is because the elephant seals are up close and personal and not bothered by our presence. Maybe it is because it has been such an priviledge to get to know the elephant seals and their diverse personalities and behaviours. The Harbour Seals are further away and hard to tell apart as individuals. An adult Bald Eagle was very interested in the Harbour Seals today and although it is early for inside waters, I thought that there might be some pupping activity soon.

Adult Bald Eagle on watch near hauled out Harbour Seals on Turbine Rock.

Chunk and Floyd often sleep together behind the science house. Floyd’s moult is more than two thirds done while Chunk has not even reached a third yet.

Chunk (closest) and Floyd stretched out behind the science house. Chunk is stretching his right fore flipper.

Chunk and Floyd also have their battles and tonight they chose to fight in amongst the nesting gulls, crushing at least one nest and killing an adult that was trying to defend its nest.

Chunk and Floyd go at each other in among the nesting gulls.

Gull versus adult bull elephant seal: seal 1; gull 0.

My favorite bird here continues to be the Black Oystercatcher, there is something about their very spartan nests and their willingness to take on adult Bald Eagles and Ravens that makes me cheer them on. Their looks are pretty great too. The newly hatched chicks are very precocious and can follow parental commands almost immediately. They are so good at remaining perfectly still when “told to” that they are almost impossible to see. Thank goodness for telephoto lenses. I will try to get a photo of the chicks from a distance tomorrow.

Black Oystercatchers are fiercely brave little birds and willing to chase off Ravens and even Bald Eagles. Their nests are entirely comfortless with only pebbles and shells for decoration.

There were no visitors today and chores were routine as I wrap up the last few days of my shift.

National Aboriginal Day at Race Rocks Heritage Site

The wind was slow and relaxed most of today at Race Rocks. In the morning, it blew 5 – 10 knots east and in the afternoon it turned to south/southeast and blew just enough to make the flag look good. The outflow wind pushed out the fog that had formed early to the west. Eventually the wind backed around through south, southwest and over to west. At the end of the day it was blowing west 20 to 25 knots and a strong wind warning is part of the forecast along with a mix of sun and cloud, mostly cloudy with fog banks in the morning.

The sky was clear all day today and with the clarity, cloud formation on the Cascade and Olympic Mountains ranges was visible. Mount Baker stood like an eastern sentinel and Bahokas Peak was visible, low, like a distant lookout, at the far southwestern entrance to the Strait of Juan de Fuca.

 

Mt. Baker to the east.

Mt. Baker to the east.

Today, the barometer continued the slide it started on Friday and ended up just above 1010 hPA. in the late afternoon. With the still wind and intense sunshine came higher temperatures. The high today of 18o C is a big jump up from the week’s average of 13.9 o C to Saturday and from the overnight low of 10.5 o C. That was sea surface temperature yesterday 10.5 o C.

Outside air temperature at Race Rocks for last week.

Outside air temperature at Race Rocks for last week.

There was very little whale watching activity today with only one vessel observed working in the Ecological Reserve. There were quite a few sports fishing vessels in reserve including rentals, charters and individual fishers. Two boats were observed fishing for rockfish in the closed Rockfish Conservation Area, within in the Ecological Reserve. Most people respect the closure and this is how the area has a chance to rebuild and start to contribute juvenile fish to adjacent areas.

Today is national aboriginal day and I would like to honour the First Nations within whose territories Race Rocks lies today. I would also like to draw attention to the stone cairns on the island, which date back to ~500AD. These cairns are a testament to a long and storied history that has been too often down-played or downright ignored, by Euro-Canadian historians. https://www.racerocks.ca/history-of-race-rocks/first-nations-burial-cairns-at-great-race-rocks/

Ecologically we are moving into summer and these lovely long days are important markers of biological activity. Most of nesting gulls are incubating and almost all the nests I have had a peek at, have three eggs. This island is an ideal location for nesting studies as the light tower offers an incomparable 360-degree view. Observational activity from that height does not disturb the nesting birds.

Seasonal timing is important and gull and oystercatcher chicks should start hatching out in a couple of weeks. It is trickiernow to pinpoint what is going on with the Pigeon Guillemots and easier later, once they start to carry fish to their chicks. The early nesters (Canada Geese) have young almost full size now and their numbers have dropped again. There are only two pairs of adults left; one pair with five goslings and the other with three. An adult Bald Eagle was hunting here today.

In the water around Race Rocks, at least three species of salmon are passing by (Chinook, Coho and Sockeye) and halibut have moved into the relatively shallow waters outside the reserve. At the surface, mixed species, feeding flocks are starting to form, driven from below by diving birds such as Rhinoceros Auklets. That is where the juvenile gulls seem to be feeding. The sea lions have all gone now and pregnant Harbour Seals are starting to look very round. Just Chunk and Floyd remain in the elephant seal department and they were both sleeping up against the back of the science house most of the day.

I went ashore briefly today and was back by breakfast. There were no visitors and chores were routine today.

 

Chunk Chilling

The morning was relatively calm with west winds of 5 to 10 knots. As the day progressed wind speed picked up gradually. When the fog rolled in, early afternoon, the wind rose more and by 18:00, it was blowing the more usual, 25 – 30 knots. By sunset it had calmed right down to 10 -1 5 again. The sky was clear all day and the blue was even visible, looking straight up through the fog. The barometer dropped very slowly all-day and ended up at ~ 1014HPA. in the early evening. The forecast calls for continuing west winds increasing to 15-20 knots (strong wind warning) Sunday afternoon, with a mix of sun and cloud.

The fog rolling in past Church and Swordfish Islands (obscured).

The fog rolling in past Church and Swordfish Islands (obscured).

It was another busy whale-watching day at Race Rocks and 18 whale watching visits to the Ecological Reserve were noted. There were many more vessels that passed just outside the Reserve following pods of Southern Resident pods of Killer Whales. The usual Saturday dive charter operator also worked in the Ecological Reserve. Three sports fishing vessels came through as well and they mostly respected the speed restriction (7 knots) in the Ecological Reserve boundary.

seaking speeding

Race Rocks was again at the centre of whale activity today. A large Humpback was feeding to the east early and then headed west through Race Passage and then off to the south. Several groups of Southern Resident Killer Whales passed through the Ecological Reserve, through Race Passage and over Rosedale Reef, with the afternoon/evening flooding tide. One group of three to four individuals came right through middle passage passing within meters of the end of the Jetty. According to the whale-watching fleet there were animals from both J and K pods going through Race Rocks at the same time. Biggs’ Killer Whales also passed by Race Rocks through Race Passage also heading east with the flooding tide.

Chainsaw is the nickname for this big, male Killer Whale. Chainsaw is what we used to call a transient or T -killer whale. The Ts are now known as Biggs' Killer Whales named after the late Mike Biggs who did ground-breaking, pioneering work on Killer Whale identification and social systems on the west coast.

Chainsaw is the nickname for this big, male Killer Whale. Chainsaw is what we used to call a transient or T -killer whale. The Ts are now known as Biggs’ Killer Whales named after the late Mike Biggs who did ground-breaking, pioneering work on Killer Whale identification and social systems on the west coast. Photo thanks to Paul Pudwell.

The same three Northern Elephant Seals continue their moults on Great Race. There are no elephant seals left on Middle Rocks. The little, two-year-old, Stellers Sealion was joined by the one and only Californian, on South Islands and it was just as well they were hauled out with the Biggs Killer Whales around. The usual spots were filled with Harbour Seals at low tide.

 

Chunk chilling.

Chunk chilling.

Lots of Glaucous-winged Gulls were seen mouth open and panting, to cool their eggs today during the intense sunshine. The Black Oyster catchers continue to incubate as well and Pigeon Guillemots continue to mate. The main nesting sites for the Guillemots seem to be in the rock piles just west of the jetty, west of camera five and in the surge channel southwest of the science house. There is also scattered guillemot activity around the perimeter of the island especially in boulder and crevice areas. The ten Canada Goose goslings left are at different stages of development but quite a few of them are getting flight feathers now and the black and white colouration on the head and tail (like the adults) is starting to fill in.

gwgu panting

An interesting sighting today was an Anna’s Hummingbird, spotted by Alex near the Science House. Missing in action was the Sea otter, which was nowhere to be seen today. There was quite a bit of Bald Eagle activity early on and that might have an effect but I was also thinking of the parade of 25 whale watching boats that all made up-close and personal connections with the sea otter a few days ago and wondering if it was just too much.

The sunshine continues to provide almost all of the electrical power requirements for the island. There were no visitors today and chores were routine.