# Quantative features of populations

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• Quantitative features of populations
• Species density: measure of the number of species per unit area
• Species Density
• Measure of how often a certain species is recorded in a sample (%)
• if a species occurs 4 out of 10, than its 40%
• Percentage plant cover
• measure of the proportion of ground that is covered by vegatation
• divided by different species
• method used depends on size of plants
• Number of squares that is covered will be the percentage