. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 62 C. M. POMERAT AND C. M. WEISS The substrates accumulating heaviest populations were asbestos, asphaltum, Dade County pine (pre-soaked 60 days), gum wood (pre-soaked 60 days) and Masonite. Asbestos shingle, commonly used as clapboarding, yielded the richest harvest as measured by the number of barnacles. A comparison of asbestos and Masonite, two of the best collectors, is shown in Figure 2. The asphaltum used was of the type employed as aquarium cement. It accumulated barnacles only. Panels of gum and Dade County pine, wh
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 62 C. M. POMERAT AND C. M. WEISS The substrates accumulating heaviest populations were asbestos, asphaltum, Dade County pine (pre-soaked 60 days), gum wood (pre-soaked 60 days) and Masonite. Asbestos shingle, commonly used as clapboarding, yielded the richest harvest as measured by the number of barnacles. A comparison of asbestos and Masonite, two of the best collectors, is shown in Figure 2. The asphaltum used was of the type employed as aquarium cement. It accumulated barnacles only. Panels of gum and Dade County pine, which had been exposed for 60 days in the earlier test reported in Table II, were included for comparison with unsoaked specimens of these woods. The unsoaked woods developed much less fouling. ' ' '- , Jf B. • j W&* I • i / ". -1' ' •/'- :J^ " ^ ' <'' J;.^" ' '.'.. ."..• ' T . < • •.V. : '£\ , ' - • ' . ' I :" ' - :*..•».,, *| • • • •-,«"(- ',* '•' • :- ' ••'' ' •••"*•* ': . •••"•!* 2. Accumulation oi fouling organisms on masonite and asbestos after 90 days' exposure at Belle Isle, Miami Beach, Florida. Intact galvanizing on iron was very resistant to marine life. No barnacles were obtained on zinc, on the experimental antifouling paint 7C or on rosin vehicle, a common paint component. Materials with hard non-porous and non-fibrous surfaces were in general rather poor collectors of fouling. The best accumulation of sedentary populations was found on surfaces which were porous and/or fibrous. Surface of paints, paint in- gredients and linoleum are in general non-porous and non-fibrous. Compared to the size and strength of the barnacle cyprid they are also smooth and hard. The histogram (Fig. 3) summarizes the collective efficiency of the substrates. Some results were undoubtedly spurious, and these should be noted. Fouling on the antifouling paint SC which occurred along the edges
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
