PC field lab

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Saturday, May 04, 2002
Good Evening
TEMPERATURE: Max. 9.0 C  Min. 6.1 C  Reset 7.7 C
MARINE LIFE: 1 mature bald eagle in the reserve today, still 3 geese.
HUMAN INTERACTION: 4 ecotour boats ,2 U.S. pleasure craft in reserve today.
posted by Carol or Mike S at 6:06 PM
Good Morning
WEATHER: Sky Overcast Vis 15 Miles  Wind West 20 G 30 Knots Sea 4 Foot Moderate — Low South
West Swell
posted by Carol or Mike S at 5:51 AM]
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Friday, May 03, 2002
Good Evening
TEMPERATURE: Max. 11.0 C  Min. 5.3C Reset 8.8 C Rain 0.7 mm
MARINE LIFE: 2 mature, 1 juvenile bald eagles. 3 geese. The Gulls,Pigeon Guillamots and Oyster Catchers are all busy in the nesting areas -found 3 more Oyster Catcher nests with eggs.
HUMAN INTERACTION: 3 ecotour boats, 2 pleasure craft. The Second Nature in just before noon with Garry, Laura and students for field lab.
posted by Carol or Mike S at 6:29 PM
Good Morning
WEATHER: Sky Clear  Vis. 15 Miles  Wind Calm  Sea Rippled
posted by Carol or Mike S at 5:56 AM

Black Oyster Catchers,always the first to lay,

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Thursday, May 02, 2002
Good Evening
TEMPERATURE: Max. 10.1 C Min. 7.1 C Reset 7.3 C
MARINE LIFE: 3 bald eagles, 1 juvenile- 3 geese still here.The birds are all actively courting,mating, nest building and in the case of the Black Oyster Catchers,always the first to lay,incubating and protecting their eggs from crows and otters. Now we stay as far away from nesting areas as necessary to prevent stressing the birds.If the birds are off the nests too long the eggs will cool down in the 35+ knt. winds.
HUMAN INTERACTION: The 2nd Nature in just before noon with Garry,Laura,Sylvia and students for field lab. Another successful but tricky low tide landing! The mornings start out somewhat promising then the wind picks up and even with the sun never gets much over 10 C
posted by Carol or Mike S at 6:25 PM

 

Good Morning
WEATHER: Sky Cloudy  Vis 15 Miles Wind West 15 Knots  Sea 1 -2 Foot Chop
posted by Carol or Mike S at 6:07 AM

Enviro. systems field lab.

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Wednesday, May 01, 2002
Good Evening
TEMPERATURE: Max. 10.3 C  Min 7.7 C  Reset 9.9 C
MARINE LIFE: 1 mature and 1 juvenile bald eagle,still the 3 geese. A few gulls have managed to gather bits of grass to build nests in spite of the wind, the never ending wind!.Will check the usual areas for more Oyster Catcher nests tomorrow if the winds abates somewhat. Don’t want to disturb any egg sitting especially since the temperatures are so unseasonably cold.Usually by the first of May the garden is 1/4 planted with the snow peas,green onions and radishes up.
HUMAN INTERACTION: 2 Ecotour boats today. 2nd Nature in with Garry, Laura and students for Enviro. systems field lab. The very low tide with the brisk westerly makes landing at the dock tricky to say the least-well done Laura!
posted by Carol or Mike S at 8:05 PM
Good Morning
WEATHER: Sky Part Cloudy  Vis. 5 Miles – Fog  Wind West 29 Knots  Sea 4 Foot Moderate – Low South West Swell
posted by Carol or Mike S at 5:59 AM

Hydractinia armata: The Race Rocks Taxonomy

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Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Anthoathecata
Family Hydractitinidae
Genus Hydractinia
Species armata (Fraser,1940)

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of: Dr. Anita Brinckmann- Voss. They can not be used or modified without her written permission.

Hybocodon prolifera : Race Rocks Taxonomy: Photomicrography of Dr. Anita Brinckmann-Voss

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hybocodon_prolifer_hydroidMedusa of Hybocodon prolifer. Although this medusa was collected elsewhere (off Malcolm Island, B.C.) the hydroid ofHybocodon prolifer is common in Race Rocks in deep tidal pools and subtidal. Medusa production is in Winter until March in Race Rocks water temperatures. The medusa buds hydroids from its one tentacle and eggs from the manubrium. (see picture below with medusa budding )

2_4hybocodon_prolifer_hydThis hydroid grows in low tide pools, and subtidal on various substrates as large barnacles and rock scallops. The medusae bud in late winter. Without medusae, they are difficult to distinguish from Ectopleura (former Tubularia) hydroids.

54_15hybocodon_prolifer_med

The medusa of Hybocodon sp.

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of: Dr. Anita Brinckmann- Voss. .They can not be used or modified without her written permission.

See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Tubularia regalis: Race Rocks Taxonomy

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tubularia_wholeTubularia regalis Boeck, 1860 (family Tubulariidae).
This large Tubularia with a stem up to 20 cm was originally described from Northern Norway. It was later found to be a circumpolar species, with records from Greenland , Bering Sea and Sea of Okhotsk. The present record from Swordfish Island, Juan de Fuca Strait, is the most southern record of this species, and the first from the Canadian Pacific coast.The stems of this species are often host to other hydroid species.

 

This clip profiles the Pearson College Divers and the invertebrates of a cave on an island a kilometer from Race Rocks. The hydroid species, Tubularia sp. shown near the end of the video is a rare species, which according to Dr. Anita Brinckmann-Voss has so far been found in only two locations; here and in Norway. Note it is growing in association with colonial ascidians. We have observed this species here over the last twenty years. It is very limited in distribution, with no more than one or two polyps appearing at any one time. It’s height is 15 cm. Video taken by Pearson College Divers, edited by GF.

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
 Order Anthoathecatae
Family Tubulariidae
Genus Tubularia
species regalis, Brook 1860

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of: Dr. Anita Brinckmann- Voss. . They can not be used or modified without her written permission.

Rhysia fletcheri: Race Rocks Taxonomy: Photomicrography of Dr. Anita Brinckmann-Voss

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Rhysia fletcheri is a new species of colonial atheccate hydroid described by Dr. Anita Brinckmann-Voss from samples collected at Race Rocks and Friday harbour.

Rhysia fletcheri(female polyps above) is a new species of colonial atheccate hydroid described by Dr. Anita Brinckmann-Voss from samples collected at Race Rocks and Friday harbour.

rhysiamale

rhysiafletcheri Rhysia fletcheri male polyps

Rhysia fletcheri differs from Rhysia autumnalis and Rhysia halecii in the gastrozooid having distinctive cnidocyst clusters on its hypostome and few, thick tentacles. Most of its female gonozooids have no tentacles. Colonies of R. fletcheri are without dactylozooids. The majority of R. fletcheri colonies are found growing on large barnacles or among the hydrorhiza of large thecate hydrozoans. Rhysia fletcheri occurs in relatively sheltered waters of the San Juan Islands and on the exposed rocky coast of southern Vancouver Island.

For the  COMPLETE TEXT OF THE PAPER DESCRIBING THIS SPECIES see:BRINCKMANN-VOSS, A., LICKEY, D. M., and MILLS C. E. 1993. Rhysia,fletcheri(Cnidaria, Hydrozoa, Rhysiidae), a new species of colonial hydroid from Vancouver Island (British Columbia, Canada) and the San Juan Archipelago (Washington, U.S.A.). Can. J. Zool. 71: 401-406.

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Subclass Leptolida
Order Anthoathecatae
Family Rhysiidae
Genus Rhysia
Species fletcheri

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of: Dr. Anita Brinckmann- Voss..They can not be used or modified without her written permission.

See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Rhizogeton nematophorum– Photomicrography of Dr. Anita Brinckmann-Voss : The Race Rocks Taxonomy

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Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Anthomedusae
Family Clavidae
Genus Rhizogeton
Species nematophorum
Common Name:

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999-All Images on this page are the property of: Dr. Anita Brinckmann- Voss..They can not be used or modified without her written permission.

Sarsia sp. :Photomicrography of Dr. Anita Brinckmann-Voss : The Race Rocks Taxonomy

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61_19sarsia_eximia_hyd

Single Polyp

Colony

Colony

 

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Family Anthoathecatae
Genus Sarsia
Species sp.

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of:Dr. Anita Brinckmann- Voss. . They can not be used or modified without her written permission.

See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/

Garveia annulata : Hydroid Photomicrography of Dr. Anita Brinckmann-Voss–The Race Rocks Taxonomy

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Garveia annulata (Hydrozoa, Anthoathecatae,Bougainvilliidae)

garv

Garveia annulata Nutting, 1901


All pictures are protected by copyright : December, 2001, Dr. Anita Brinckmann-Voss..
and /or Lester B. Pearson College. for consideration of permission to use for educational purposes only.

Domain Eukarya
Kingdom Animalia
Phylum Cnidaria
Class Hydrozoa
Order Anthoathecatae
Family Bouagainvilliidae
Genus Garveia
Species annulata
Nutting, 1901

This file is provided as part of a collaborative effort by Lester B. Pearson College and local scientists. Copyrighted 1999–All Images on this page are the property of:Dr. Anita Brinckmann- Voss. . They can not be used or modified without her written permission.
See this link for other hydroids:  https://www.racerocks.ca/tag/hydroid/