The Surfgrass (SUR) Bioband

Zone

Bio-band Name

Database Label

Colour

Indicator Species*

Physical Description

Exposure
[Description]

Associate Species*

B & C

Surfgrass

SUR

Bright green

Phyllospadix sp.

Appears in tidepools on rock platforms, often forming extensive beds. This species has a clearly defined upper exposure limit of semi-exposed and its presence in units of Exposed wave energy indicates a wide cross-shore profile, where wave energy is dissipated by wave run-up across the broad intertidal zone.

SP-SE

Foliose and coralline red algae

Surfgrass (SUR) is visible on underwater boulders with Bull Kelp (NER) dominating the surrounding subtidal zone of St. Joseph Island, a Semi-Protected, Partially Mobile island southwest of the Maurelle Islands.

Patches of Surfgrass (SUR) mixed with lush Dark Brown Kelps (CHB) are visible in this Semi-Exposed (SE) rock platform in the Percy Islands.

SE06_MM_18615,jpg

SE06_MM_15744.jpg

Bioarea SECR

Bioarea SECR

* Indicator Species: The dominant species in a bioband and usually what the bioband is named for (eg. Barnacles = Barnacle bioband or BAR).
  Associated Species: Species commonly found within a given bioband. These are based on known life histories of these species and ground observations. For more detailed information on associated species and regional differences see the Shore Station database (http://alaskafisheries.noaa.gov/habitat/shorestation/default.htm).