Monthly Archives: August 2014

What’s your number?

Posted on by

It was a day without fog at Race Rocks and as the westerlies continue, some serious clouds can be seen piling up on far horizons. The barometer rose all day, which bodes well for tomorrow but there may be a few needed showers.

It was a busy day on the water with 26 whale watching boats visiting the reserve. From the expressions on the tourists’ faces, they seemed to enjoy watching the sea lions. All the skippers were respectful except for two travelling together who did not heed the go-slow zone.

There were so many recreational fishing boats that I could only keep track of the ones who were in contravention of the DFO Rockfish Conservation Area closure which runs around the reserve at a 40m depth. Many of those fishing inside the boundary were in rental boats but some of the other speed boats were doing what they do best…speeding. The Pedder Bay Marina is really good about talking to folks who rent from them and informing them about the conservation area.

I looked for tagged and branded sea lions again today and can report another nine California Sea Lions and four Stellers’ Sea Lions bringing the total number of branded individuals sighted up to 29. Eventually we will know a bit more about their stories from those numbers they carry. There are also two Stellers with neck rings cutting into their flesh and one with a flasher hanging out of its’ mouth. There are individual Harbour Seals, as well as both species of sea lions with major wounds. Speaking of wounds, there were two new, (to me), very small Elephant Seals on the ramp today, probably young of the year, judging from the size.

A few Pigeon Guillemots are still carrying into fish into the large boulder area by the jetty. The chicks must leave for sea at night as I haven’t seen any on the water and most are probably fledged by now. Each day, there are more Pelagic and Double Crested Cormorants roosting on the southwest side of the island.

The desalinator worked for a couple of hours during the sunshine today, making fresh water thanks to the solar panels.

Month end inventory was conducted today with measurements taken of all the fuel, fresh water, and equipment run times recorded.

My other task was to try and stake out a small territory on the jetty so that I can come and go and do the sampling. The elephant seals are no problem, they just sleep as you pass, or open one eye. Keeping the more belligerent California sea lions off the jetty seems to be a losing battle and has made getting out to the end of the jetty to sample seawater, extra challenging.

Fog and sunshine

Posted on by

There was a tiny bit of rain with fog early today and then it switched back to near gale westerlies with heavy fog interspersed with sunshine. It is a beautiful starlight evening and the westerly continues to drop. The barometer held fairly steady today with a slight increase this evening. Environment Canada says that a strong westerly wind warning stays in effect for Sunday with a chance of showers.

There were ten whale watching boats in the Reserve today and they were all well behaved. A dive charter boat with eleven divers aboard came through the reserve but I am not sure where they dove.

Two male kayakers , one in a green kayak and the other in a reddish-brown kayak came through the passage on the south side of Great Race in the early afternoon and caused a sea lion stampede. They then proceeded to fish right in the closed conservation area. There were also two recreational boats fishing in the marine protected area.

A few more sea lion brands were observed today including one seven year-old female Steller’s Sea Lion that was branded as a pup in 2007 at Rogue Reef , near Gold Beach in southern Oregon.

This was my first day to not see Elephant Seals and California Sea Lions have taken over the jetty and marine railway. Some of them are a bit scary looking and do not want to move so that I can do seawater data collection.

Three River Otters were out and about in daylight today. Usually you don’t see them and just guess that they are around in the evening as all the gulls lift off and call. There were two young, very healthy-looking animals with an adult. Maybe that it why there are so many Glaucous-winged gull chick mortalities here? (Just a guess.)

Alex was quite excited to see some of the old lighthouse artifacts including parts of an old Fairbanks-Morris engine. He also pointed out where the old granite light-keepers house had been removed from its attachment to the base of the light tower.

The tasks today were the basic, regular tasks of  cleaning the solar panels, running the generator, launching and bringing the boat back up in order to drop off Alex, repairing the jetty fence (twice) and taking the salinity measurement. Tomorrow is month-end report time.

 

 

Trustee Tour Day

Posted on by

The wind was out of the west today although it did swing to the southwest a few times and is trending that way now. The barometer has been slowly dropping for a few days. A few real clouds made another gorgeous sunset with a super crescent moon low in the west.

There were three tour boats today and one recreational fishing boat was noted fishing inside the reserve boundary today. They must have known as they stopped as soon as it was clear that they were being observed. There was military blasting today.

An animal census indicated 200 fewer sea lions than last week and brought to light 17 tagged and branded animals, with nine complete tag numbers recorded and seven partials. One of the Northern Sea Lions appears to have a badly embedded line around and growing into its’ neck. Only seven Glaucous–winged Gulls remain unfledged although some of the adults, presumably with failed nests are still carrying around nesting material and acting broody. At least one Pigeon Guillemot is bringing fish into the large boulder scree just west of the jetty, presumably they have a late chick there that they are feeding.

The struggle for sustainability continues and the solar panels contributed well to the island’s energy needs today even though it was not sunny all day.

Chris brought out a family group of 11 people with at least three generations today on Second Nature. They were delighted to make first hand observations of sea lion and elephant seal behaviour and enjoyed the beauty of the place.

Maintenance work consisted of the routine cleaning of solar panels, mucking out the waste, repairing the jetty fence line, collecting seawater salinity data and making biological observations. The generator was only run for an hour and a half, thanks to the solar panels.

Ascidia paratropa : Glassy tunicate –The Race Rocks Taxonomy

Posted on by
glasstunicate

Glass tunicate image by Ryan Murphy. ID by Rick Harbo Sept 2014

Phylum Chordata,
Subphylum Urochordata,
Class Ascidiacea,
Order Enterogona
Family Ascidiidae
Suborder Phlebobranchia
Genus Ascidia
Species paratropa
(Huntsman, 1912)

 

 

 

 

 

This is a solitary tunicate, 10-15 cm tall.. We find these only occasionally at Race Rocks, sub-tidally  at about 10-15 metres. The colonial ascidians are always more abundant.

Other Members of the Subohylum urochordata at Race Rocks 
taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams.

 name –year (PC)

Animal Census

Posted on by

Low winds today picking up in the afternoon/evening. Clear skies for most of the day. Forecasted winds of 15 knots for tomorrow morning rising to 30 in the afternoon.

DSC_0501

 

 

 

 

 

Animal Census (by Anne):

Steller Sea Lions 229
California Sea Lions 388
Harbour Seals 81
Glaucous-winged Gulls 301 (including 29 chicks)
Double-crested Cormorant 3
Pelagic Cormorant 1
Canada Goose 11
Black Oyster Catcher 11
Black Turnstone 1
Greater Yellow legs 1
Very large mixed species feeding groups to the west southwest of reserve including 100s of Rhinoceros auklets, Common Murres, Heerman’s Gulls and California Gulls.

37 whale watching boats

5 recreational boats

3-4 trips from Second Nature

Baleen whale this morning spotted feeding in the same place as yesterday evening, to the SW end of the reserve.

Anne continued with training today. James from Hybrid Plumbing came out to fix the water heater this morning. Changed cartridge filters on desalinator. Prepared for shift change.

 

 

Baleen at sunset

Posted on by

Fog in the morning that burned off around 1030h. Winds reached 35 knots mid-afternoon. Light winds forecasted for tomorrow morning and increasing in the afternoon. Barometric pressure still dropping.

2 whale watching boats

1 recreational fishing boat

Last of the gull chicks are learning to fly. Another elephant seal arrived on the boat ramp today, bringing the number to four. Spotted a baleen whale off the SW side of the reserve at 2030h this evening as the sun set.

Courtney came out in Second Nature with a tour group this morning of alumni and then made another trip to do maintenance on the desalinator (which is now in working order). Cistern was very low so Anne and I ran the pump for most of the day. Continued with Anne’s training.

Orcas visit and Anne arrives

Posted on by

Clear skies. Winds dropping to zero knots midday. Barometric pressure dropping since noon yesterday. Forecasted winds rising from 15-30 knots during the day.

19 whale watching boats

7 recreational boats

Another visit from Second Nature this morning with alum. A pod of Orcas came through the reserve this morning entering from the west near West Rocks coming through Middle Rocks and North Rocks into the Middle Channel.

DSC_0779

 

 

 

 

 

 

I was off the island today to pick up Anne Stewart for training.

Animal Census

Posted on by

Fog all day. Northwest winds 5-15 knots all day. Barometric pressure from peaking at 1810.0 midday but only dropping to 1610.0 hPa. 15-20 knot winds predicted for tomorrow with fog.

Animal Census:
161 Gulls
47 Guillemots
3 Elephant seals
537 Sea lions (Steller and California)
3 River otters
4 Double-crested cormorants
120 Harbour seals
15 Black oystercatchers

13 whale watching boats

5 recreational boats

Second Nature also came out for two visits today with some alumni that are here for the ten year reunion, although they did not dock. Still having hot water and desalinator issues. Prepped for shift change.

Aequorea victoria, crystal jelly : The Race Rocks Taxonomy

Posted on by
aequorea

Aequorea in a kelp bed at Race Rocks, photo by Chris Blondeau

Kingdom: Animalia Subkingdom: Eumetazoa Phylum: Cnidaria Subphylum: Medusozoa Class: Hydrozoa Subclass: Leptolinae Order: Leptomedusae Suborder: Conica Family: Aequoreidae Genus: Aequorea Species: A. victoria The following quote  is from Wikipedia.. noted here because of the reference to Dr. Anita Brinckmann-Voss.

“Aequorea victoria, also sometimes called the crystal jelly, is a bioluminescent hydrozoan jellyfish, or hydromedusa, that is found off the west coast of North America. This species is thought to be synonymous with Aequorea aequorea of Osamu Shimomura, the discoverer of green fluorescent protein (GFP). Shimomura together with Martin Chalfie and Roger Y. Tsien were awarded the 2008 Nobel Prize in Chemistry[1] for the discovery and development of this protein as an important biological research tool. Originally the victoria species was supposed to designate the variant found in the Pacific, and the aequorea designation was used for specimens found in the Atlantic and Mediterranean. The species name used in GFP purification was later disputed by M.N. Arai and A. Brinckmann-Voss (1980),[2] who decided to separate them on the basis of 40 specimens collected from around Vancouver Island. Osamu Shimomura notes that this species in general shows great variation: from 1961 to 1988 he collected around 1 million individuals in the waters surrounding the Friday Harbor Laboratories of University of Washington, and in many cases there were pronounced variations in the form of the jellyfish. “

 An interesting account by Claudia Miils about the misidentification of the bioluminescence in Aequorea in various scientific journals and magazines  can be found in : Bioluminescence and other factoids about Aequorea, a hydromedusa See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/ 

This file is provided as part of a collaborative effort by the students, faculty and staff and volunteers of Lester B. Pearson College
 originally published 2006, updated: 2014 Garry Fletcher

Business as usual

Posted on by

Overcast. Winds 5-10 knots most of the day. Barometric pressure rising until this evening. Winds forecasted to be 15-25 knots tomorrow.

16 whale watching boats

3 recreational boats

1 commercial fishing boat passed through

Many sea lions on the main island now. There is lots of interaction between the Californias and Stellers. In the evening, the Californias take over the northeast lawn and the Stellers tend to stay on the outer edge of the rock though many do squish their way into the lawn resting area. There are three juvenile elephant seals that have been spend their days on the ramp. They make their way into the waters in the evening.

Finished cleaning out the tank room. Backflushed the desalinator although it is having issues with the high pressure pump. Been working on cameras 1 and 5 which are down.