. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 60 40 20 0 20 40 0 20 40 0 20 40 0 Time (s) X«5cm Y-Ocm X = 5 cm Y = 1 cm X = 5 cm Y = 2 cm 20 40 60 D> E 5 2 ' o 3 "- n - fr ^ ou • 3. 1 - ou C O |40- -40 1 o c 020 ll i i i HI -20 0) UN ii , i 8 0 kj 'M y m i ii i ,i 0 20 40 0 20 40 0 20 40 60 Time (s) Plume Source Figure I. Representative concentration distributions downstream from a point source in a tidal creek. Histograms represent fluorescein concentrations (mg/1) in samples collected at 5 cm (bottom row), 25 cm (middle row), and 50 cm (top row) downstream fro
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 60 40 20 0 20 40 0 20 40 0 20 40 0 Time (s) X«5cm Y-Ocm X = 5 cm Y = 1 cm X = 5 cm Y = 2 cm 20 40 60 D> E 5 2 ' o 3 "- n - fr ^ ou • 3. 1 - ou C O |40- -40 1 o c 020 ll i i i HI -20 0) UN ii , i 8 0 kj 'M y m i ii i ,i 0 20 40 0 20 40 0 20 40 60 Time (s) Plume Source Figure I. Representative concentration distributions downstream from a point source in a tidal creek. Histograms represent fluorescein concentrations (mg/1) in samples collected at 5 cm (bottom row), 25 cm (middle row), and 50 cm (top row) downstream from the source and at 0, 2, 4, 6, 8, and 10 cm from the midlmc of the plume. Note the scale difference between fluorescein concentrations at downstream locations. The visible region of the fluorescein plume at each position is denoted by the shading. Panels to the right of the histograms represent ftO-s records of instantaneous fluctuations in dopamine (tracer) concentration, measured at 10 Hz with a carbon fiber electrode, at locations where the fluorescein was sampled. The left- most panel in each row is the sample from the midline of the plume, and successive panels are samples from 2, 4, 8, and 10cm from the midline (see tick marks on histogram axes for sampling sites). Highly concentrated bursts of dopamine were common in all samples taken within the visible portion of the plume. graph with a sodium ion-exchange column (4-mm ID X 120mm; Beckman) for separation. In this system, amino acids were monitored spectrophotometrically after post-column reaction with ninhydrin. Compositions of clam effluent and mantle fluid were almost identical (Pearson's product-moment correlation: r2 = ; P 50% of the total amino acid composition), we used it as a marker to measure the rates of fluid release from chipped clams. In the laboratory, clams (n = 12) of various sizes were chipped by using a metal rod to deliver a single firm blow to the lateral shell margin. The resulting chip was
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
