LEARNING OUTCOMES

The aim of the subject is to provide solid basic knowledge on the structure and functioning of natural systems, with particular emphasis on the mechanisms that determine the distribution and abundance of organisms according to their relationships with the environment. The course provides basic knowledge about the classification and distribution of ecosystems, the interactions between species, biodiversity and ecosysetm functioning. The subject also aims to provide evidences of global climate change and of the main direct anthropic disturbances. The teaching highlights the hierarchical and interdisciplinary nature of ecology with the aim of encouraging students to deal with complex and multi-scalar disciplines and problems.

AIMS AND LEARNING OUTCOMES

The subject aims to provide solid basic knowledge on the structure and functioning of natural systems, with particular emphasis on the mechanisms that determine both the distribution and abundance of organisms as well as their relations with the environment.

The teaching highlights the hierarchical and interdisciplinary nature of ecology with the aim of encouraging students to deal with complex and multi-scalar disciplines and problems. This objective is reflected in the organization of the program that runs along the hierarchical scale of ecological organization, from the mechanisms underlying biodiversity (evolutionary ecology), passing through the adaptations of plant and animal organisms to the environment (autoecology), to population dynamics (demoecology), up to the structure and functioning of communities and ecosystems (synecology).

The subject will provide the basis for further specialized studies in ecosystem and applied ecology, biodiversity conservation and sustainable environmental management.

PREREQUISITES

There are no specific prerequisites, but basic knowledge of zoology is recommended to effectively address the teaching content.

TEACHING METHODS

For the first semester, the lessons will be carried out if possible in the presence, however guaranteeing the fruition of the lessons even remotely, through video recording, synchronous or asynchronous, Team Based Learning activities, auto-assessment questionnaires.

All face-to-face activities will be carried out in compliance with the capacity limits of the classrooms / laboratories and the distance provided for by the current legislation following the emergency COVID19.

Please refer to the specific AulaWeb application for teaching for any updates due to changes in the health and epidemiological situation.

SYLLABUS/CONTENT

The teaching program provides for the presentation and discussion of the following topics:

Introduction to ecology

• Notes on the history of ecological thinking. Ecology and environmentalism.

• Natural Selection and Evolution.

Autoecology

• The physical environment: climate, soil, water, limiting factors.

• Adaptations of plant organisms.

• Adaptations of animal organisms.

Population ecology

• Dispersion of organisms in space. Aggregate, random, uniform spatial distributions.

• Estimate of the density and number of individuals in a population.

• Elementary growth of a population. Mortality and fertility tables. Growth rates. Exponential and logistic models. Distribution of ages in a population. Mortality and survival curves.

• Intra- and interspecific relations. Competition, predation, symbiosis. Gause principle and competition models.

Community ecology

• Elements of analysis of the structure of the communities. Diversity and evenness. Species-area curve.

• Balance model, area and distance effects. Habitat and ecological niche concepts.

• Populations and communities in ecological gradients. Ecotones and the "margin effect" concept. Climax concept. Ecological successions.

• Metapopulations and metacommunities.

Ecosystems ecology

• Ecosystem concept. Ecosystem structure.

• Fundamental concepts of energy. Food chains. Trophic networks. Trophic levels.

• Primary production. Grazing and detritus food chains. Trophic structures and ecological pyramids.

• Biomes: tropical rain forest, temperate forest, boreal forest, prairie, savannah, Mediterranean biome, tundra, desert. Aquatic, marine and freshwater, ecosystems. Transitional ecosystems.

• Biogeochemical cycles.

Man and the environment

•  Climate changes. Oceanic acidification. Study cases

RECOMMENDED READING/BIBLIOGRAPHY

Available (downloadable from Aulaweb/Teams or from the teacher). Power Point of lessons and scientific articles.

Some recommended texts:

Pusceddu, Sarà & Viaroli, Ecologia, UTET.

Smith & Smith, Elementi di ecologia, Pearson.