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ULTRASONIC REMOVAL OF EPILITHIC ALGAE IN A BAR‐CLAMP SAMPLER 1, 2
Author(s) -
Gale William F.
Publication year - 1975
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1975.tb02814.x
Subject(s) - algae , biology , bar (unit) , scuba diving , ultrasonic sensor , clamp , sampling (signal processing) , desiccation , botany , physics , acoustics , oceanography , zoology , optics , geology , computer science , computer graphics (images) , clamping , detector
SUMMARY A bar clamp with a collecting cup attached was used to collect epilithic algae samples on stones 4–50 cm diam.; stones were sampled by wading in shallow water and by SCUBA diving in deep water. The collecting cup delimits the sampling area (a 22 mm diam. circle) for cleaning and protects it from cell loss and desiccation. On some stones, ultrasonic vibration removed large numbers of cells (up to 62% of the total) missed by scraping and brushing.