BIO3122

Freshwater ecology

Professor Sam Lake

6 points - Second semester - Clayton - Two 1-hour lectures, equivalent of 3 hours laboratory plus field work per week - Prerequisites: 16 points [12 points for BSc(Env)] - including BIO2011 and either ZOO2031 or BOT2041 or BOT2042

Objectives This subject is designed to provide students with a basic knowledge of the structure, functioning and biodiversity of ecological communities and of ecosystems in freshwater bodies, both in standing and running waters. Students will gain an understanding of the forms and regulation of productivity, trophic structure and inter-specific interactions in freshwater systems and a comprehension of the effects that both natural and human-generated disturbances have on these systems. This will lead to an appreciation of effectively managing and conserving freshwater ecosystems and their biota. Students will further develop and strengthen their skills to examine scientifically ecological concepts and processes, to write scientific reports and evaluate and present ecological findings.

Synopsis The subject deals with the ecology of the abiotic and biotic components of freshwater ecosystems; both those of standing (lentic) and running (lotic) waters. The principal attention is placed on the ecological dynamics of communities and ecosystems with emphasis on the dynamics of energy and nutrients, the trophic structure and interspecific interactions, and the patterns and regulation of diversity in the aquatic ecosystems. The effects of disturbances, both natural and human-generated, and management problems and conservation strategies are outlined. The practical component is to be taught through fieldwork on an excursion and practical work on the Clayton campus. The excursion will serve to illustrate the basic properties of a range of aquatic ecosystems and to develop skills in resolving ecological problems.

Assessment Examination (2.5 hours): 60% - Practical work/field excursion: 40%

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