APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland.

A-P-H-O-T-O Wildlife Stock Image Library
Pikea californica Harvey, 1853 - Captain Pike's Golden Gate Weed - non-native species
Captain Pike's Weed
Pikea californica
- thallus 1

Captain Pike's Weed
Pikea californica
- thallus 2

Captain Pike's Weed
Pikea californica
- thalli 1

Captain Pike's Weed
Pikea californica
- branches 1

Specimens above found on pontoons at Newlyn Marina, Newlyn Harbour, Newlyn, Cornwall, 12.02.15.

Captain Pike's Weed
Pikea californica
- thallus with holdfast 1

Captain Pike's Weed
Pikea californica
- frond tips 1

Captain Pike's Weed
Pikea californica
- frond tips 2

Captain Pike's Weed
Pikea californica
- with 0.1mm division rule 1

Captain Pike's Weed
Pikea californica
- frond tips 3

Captain Pike's Weed
Pikea californica
- frond tip 1

Captain Pike's Weed
Pikea californica
- part of frond of old plant 1

Captain Pike's Weed
Pikea californica
- part of frond of old plant 2

Captain Pike's Weed
Pikea californica
- fruiting body 1

Captain Pike's Weed
Pikea californica
- fruiting body 2

Captain Pike's Weed
Pikea californica
- juvenile plant in pool 1

Captain Pike's Weed
Pikea californica
- juvenile plant in pool 2

Specimens above found on the lowershore on an extreme low water spring, under South Pier, Newlyn Harbour, Newlyn, Cornwall, 25.01.15.

The species has up until now only been recorded from the Isles of Scilly, these are the first records of this species from the UK mainland. The species comes from the Pacific coasts of North America and Japan. The species is thought to have arrived in the Isles of Scilly on the anchors of Flying Boats during WWII, so it has taken 70 years to reach the mainland. Another Isles of Scilly marine species, the Orange peel sea mat, was found in Penzance at roughly the same time. The transport could be linked to unusual weather events, or the fouling of vessels, or fishing equipment.

In "An Atlantic Population of Pikea californica (Dumontiaceae, Rhodophyta)" by Christine A. Maggs and Michael D. Guiry, it is stated that Pikea californica was the cover dominant at some wave-exposed sites and also grew on Laminaria hyperborea, and was found on pebbles at -7m below Chart Datum on the Isles of Scilly.

One of the new mainland sites at Newlyn, Cornwall, was visited on the 28.01.17 and as well as growing on bedrock within 1-2m of the north side of South Pier wall at Newlyn, Pikea californica was also growing as an epiphyte on Cystoseira baccata approx. 10m away from the harbour wall. How important Cystoseira baccata might be for Pikea californica at that location is unknown because the tide didn't go down far enough to assess, but bedrock, Laminaria hyperborea and Cystoseira baccata should now be considered when looking for or montoring the future spread of Pikea californica.

Fauna supported by Pikea californica at Newlyn, Cornwall by
David Fenwick 24.02.15.

Sample size, four mature Pikea californica plants. Plants collected for their size, but randomly sourced from outside the north pier at Newlyn Harbour.

Outcome. About 30 species were found to be supported by Pikea californica in some way, a more detailed study will no doubt find the species supports more species, especially later in the year when the water warms.

Pikea californica has also be found to support stauromedusae, on the Isles of Scilly [Ref. A. Gall (NE)].

Species supported by Pikea at Newlyn

Acervulina inhaerens
Massilina secans
Leucosolenia
species
Sycon ciliatum
Synoicum incrustatum
Clytia hemisphaerica
Coryne muscoides
Oerstedia dorsalis
Oerstedia
sp. ?
Amphiglena mediterranea
Nereididae
(juvenile)
Pedicellina cernua
Pedicellina nutans
Stenothoe monoculoides
Podocerus variegatus
Dynamene bidentata
Idotea
sp. (juvenile)
Stenosoma lancifer
Achelia
species
Endeis spinosa
Patella pellucida
Littorina species
(juvenile L. fabalis / obtusata)
Rissoa parva
Facelina auriculata
Celleporella hyalina
Electra pilosa
Scruparia chelata
Tubulipora
species
Walkeria uva
?
Trididemnum cereum
Aplidium pallidum

See Mike Guiry's Seaweed Site page on Pikea californica for further information about the species..

APHOTOMARINE supports open source data recording and sharing for the benefit of wildlife, recorders, research, science and education. The project recommends the following websites and works with the following bodies and organisations.

Marine Biological Association MBA

The Marine Biological Association or MBA, based in Plymouth, is one of the world’s longest-running societies dedicated to promoting research into our oceans and the life they support. Since 1884 the MBA has been providing a unified, clear, independent voice on behalf of the marine biological community.It has a growing membership in over 40 countries.

CISFBR or Cornwall and Isles of Scilly Federation of Biological Recorders

The CISFBR or Cornwall and Isles of Scilly Federation of Biological Recorders is an independent umbrella organisation supporting independent recorders and recording groups in the county of Cornwall.

Cornish Biodiversity Network

The Cornish Biodiversity Network
or CBN is the largest open source wildlife database in Cornwall that sends open source data to the NBN (National Biodiversity Network). It is a new recording system based on the ERICA database, the largest recording resource in Cornwall. The CBN best supports the activities and needs of the independent recording community and recording groups in Cornwall.

NBN National Biodiversity Network

The National Biodiversity Network or NBN is a charity that supports open source data sharing and recording supporting conservation, science and education. "Why do recorders need open source?". Simply because it supports the core values of wildlife recording and the free use of records and data over a very wide network that includes partners like the Natural History Museum. The link here is to the NBN Atlas.The link here is to the NBN Atlas.

The taxonomy used here is based on that of the following database, which is also used by the MBA, NHM and the NBN.

World Register of Marine Species or WoRMS

The World Register of Marine Species or WoRMS.

AlgaeBase

AlgaeBase is a database of information on algae that includes terrestrial, marine and freshwater organisms.

Over 99% of the species records on APHOTOMARINE are open source but they are also copyright David Fenwick. Species records published on APHOTOMARINE may not be used on any database, list or distribution map, without a signed user agreement. Cornish records that appear on APHOTOMARINE are recorded using the ERICA database to benefit recording in Cornwall and scientific and historical recording in general. No financial benefit must be taken from any record produced by David Fenwick, records are of educational benefit only. Records by David Fenwick must ''never'' be financially traded.

Pikea californica Captain Pike's Golden Gate Weed non native algae uk Red Seaweed Images
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.