Freshwater Hydrobiology Lecture 2: Factors Determining the Distribution of Freshwater Biota: 1.

Abstract

This is the second lecture in the course Freshwater Hydrobiology which explores the effects of physical factors on the creation of habitats and their associated communities in freshwater. This is a PowerPoint lecture which is free to use and modify. It was designed to be used in conjunction with the course text Gray, N.F. (2017) Water Science and Technology: An Introduction, published by CRC Press, Oxford. In the lecture, the following are explored: natural dispersion of species, biotic factors, abiotic factors, water chemistry, river flow, discharge rate, current velocity, shear stress, Froude number, Velocity:depth ratio, Lotic-invertebrate Index for Flow Evaluation (LIFE).