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Emergency ResponseHome | Image Galleries | Emergency Response

Mearns Rock Quadrats

High resolution photos of a section of Mearns Rock, for use in the project, "Graphing Changes in Marine Life Abundance."

Click on an image below to see the full image.

Young leafy green Fucus plants as well as young barnacles, which appear as tiny, white spots.

Mearns Rock Quad 1990
(07.01.90, Snug Harbor, Knight Island, Alaska) 1990

Mature, gold-brown Fucus and dark-colored juvenile mussels

Mearns Rock Quad 1991
(07.01.91, Snug Harbor, Knight Island, Alaska) 1991

Light-colored barnacles and moderately-sized mussels

Mearns Rock Quad 1992
(07.01.92, Snug Harbor, Knight Island, Alaska) 1992

Dark patches of mussels, whitish patches of barnacles and, in the upper section of the photo, young, gold-brown Fucus plants.

Mearns Rock Quad 1993
(07.01.93, Snug Harbor, Knight Island, Alaska) 1993

Mature black mussels and a few barnacles

Mearns Rock Quad 1994
(07.01.94, Snug Harbor, Knight Island, Alaska) 1994

Bare rock with a few barnacles, and some young Fucus plants in the upper section

Mearns Rock Quad 1995
(07.01.95, Snug Harbor, Knight Island, Alaska) 1995

Dark gray bare rock partially covered with Fucus and a few young barnacles

Mearns Rock Quad 1996
(07.01.96, Snug Harbor, Knight Island, Alaska) 1996

Dark sections of mussels and a slimy, grey-green filamentous algae.

Mearns Rock Quad 1997
(07.01.97, Snug Harbor, Knight Island, Alaska) 1997

Filamentous algae covers the rock

Mearns Rock Quad 1998
(07.01.98, Snug Harbor, Knight Island, Alaska) 1998

Blurry brown photo, interpreted as mature Fucus and mussels.

Mearns Rock Quad 1999
(07.01.99, Snug Harbor, Knight Island, Alaska) 1999

Mature Fucus and a large filamentous algae.

Mearns Rock Quad 2000
(07.01.00, Snug Harbor, Knight Island, Alaska) 2000

Older brown Fucus plants, younger (greenish) Fucus, and white regions of barnacles.

Mearns Rock Quad 2001
(07.01.01, Snug Harbor, Knight Island, Alaska) 2001

Patches of Fucus and scattered barnacles

Mearns Rock Quad 2002
(07.01.02, Snug Harbor, Knight Island, Alaska) 2002

Bare rock is covered with scattered young barnacles and small patches of Fucus

Mearns Rock Quad 2003
(07.01.03, Snug Harbor, Knight Island, Alaska) 2003

Mearns Rock Quadrat 2004

Mearns Rock Quad 2004
(07.01.04, Snug Harbor, Knight Island, Alaska) 2004

Related Pages on Our Site
  • Graphing Changes in Marine Life Abundance Try your hand at some marine biology! Follow these steps, designed for middle and high school students, to make a study of the marine life occupying a section, or quadrat, of Mearns Rock.
  • Observing Marine Life Abundance As you look through these photos, consider the intense competition for space that exists among marine life forms in the intertidal region.
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