Species

Algae

Identifying algae is not always easy! Learn more about the algae monitored by the LiMPETS program. The list below includes:

  • 16 core taxa that are monitored at as many sites as possible
  • 3 other taxa (denoted with *) that are monitored at only one or two sites

Go to Datasheets and Forms to find out which species are monitored at your LiMPETS site of interest.

Upright Coralline Algae(Bossiella spp./Calliarthon spp./Corallina spp.)
Description:
Many species, often difficult to distinguish from one another. All of the species have calcium carbonate deposits in their cell walls, making them relatively stiff; many species are branched and have tiny jointed segments. Sometimes they persist without upright segments, in which case they are counted as Encrusting Coralline Algae. They are found in a variety of colors including grey, dull pink and bright pink.
Distribution:
Aleutian Islands to Chile.
Habitat:
Common in the mid to low intertidal and shallow subtidal; on rock faces and in tidepools.
Diet:
Sunlight and dissolved nutrients, which are required for photosynthesis.
Fun Fact:
Although the calcium carbonate in the tissues make it difficult for many animals to feed on these algae, there are a few molluscs, like lined chitons and dunce-cap limpets, that readily feed on them.
Reason for Monitoring:
Resistant to grazing, trampling, and pollution, especially Corallina spp., which sometimes are the main algae remaining around sewage discharges.
References:
Encyclopedia of the Sanctuary
Mondragon, J and J. Mondragon. 2003. Seaweeds of the Pacific Coast: Common Marine Algae from Alaska to Baja California. Sea Challengers, Monterey,California.