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ECOLOGY OF THE SEASHORE
lecture resources Bringing ecology to life ECOLOGY OF THE SEASHORE A complete seashore sampling and quantification course on CD-ROM. PowerPoint presentations showing the species you are likely to find and the techniques you need. LECTURE 8 METHODS FOR STUDYING THE ECOLOGY OF THE SEASHORE Part 2: PHYSICAL MEASUREMENTS Photography, text & design by Dr James Merryweather
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PHYSICAL MEASUREMENTS
2 PHYSICAL MEASUREMENTS TRANSECT Organisms of particulate shores are dependent upon a number of physical parameters which are relatively easily measured
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3 TRANSECT First, dig a hole
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4 Sulphide layer TRANSECT Measure its depth from the surface
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5 TRANSECT Measure its depth from the surface
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TRANSECT Particle size distribution & Porosity
6 Particle size distribution & Porosity TRANSECT By serial sieving and weighing output from different mesh sizes
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By serial sieving and weighing output from different mesh sizes
7 Typical laboratory sieves TRANSECT By serial sieving and weighing output from different mesh sizes
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8 Temperature TRANSECT Measured at known depths
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9 at 10 cm TRANSECT Measured at known depths
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10 TRANSECT Make use of water that flows into the hole
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TRANSECT Salinity Hydrometer Refractometer
11 Salinity Hydrometer Refractometer TRANSECT Measure specific gravity with a hydrometer, refractive index with a refractometer or use an electronic salinometer
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TRANSECT Measure specific gravity with a hydrometer, refractive
12 TRANSECT Measure specific gravity with a hydrometer, refractive index with a refractometer or use an electronic salinometer
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TRANSECT Measure specific gravity with a hydrometer, refractive
13 TRANSECT Measure specific gravity with a hydrometer, refractive index with a refractometer or use an electronic salinometer
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TRANSECT Measure specific gravity with a hydrometer, refractive
14 TRANSECT Measure specific gravity with a hydrometer, refractive index with a refractometer or use an electronic salinometer
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15 pH TRANSECT Use narrow-range pH paper (7-9) or a pH meter
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16 TRANSECT Use narrow-range pH paper (7-9) or a pH meter
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17 Dissolved oxygen TRANSECT Using a field oxygen meter
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Collecting samples for
18 Dissolved oxygen TRANSECT Collecting samples for the Winkler titration
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Dissolved oxygen concentrations from the Winkler titration data
19 TRANSECT Dissolved oxygen concentrations from the Winkler titration data
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Electronics and sea water are incompatible!
20 Electronics and sea water are incompatible! The field salinometer This slide is dedicated to the late Nikon Coolpix 885 Ser. No , which suffered this fate, here at Ardarrach shore, R.I.P. September 2003
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