ECOLOGY 2

Academic Year 2025/2026 - Teacher: GIUSEPPE NICOLOSI

Expected Learning Outcomes

The main objective of the Ecology course is to understand the biosphere as a single large ecosystem, in which the different species, including humans, interact with one another and with the surrounding environment. This involves understanding how ecological systems function and, in particular, energy relationships and the cycling of matter, as well as numerical fluctuations in populations and interspecific relationships.

In accordance with the Dublin Descriptors, by the end of the course students are expected to acquire:

  • Knowledge and understanding: understand the fundamental principles of ecology and the main processes regulating populations, communities, and ecosystems.
  • Applying knowledge and understanding: apply ecological concepts to the interpretation of natural phenomena and to the analysis of relationships between organisms and their environment.
  • Making judgements: critically analyse ecological data and information and make independent assessments of the interactions between human activities and natural systems, also through the discussion of topics and examples presented during lectures.
  • Communication skills: describe and discuss the main ecological concepts using appropriate scientific terminology; these skills will be developed through active participation in lectures and assessed during the oral examination.
  • Learning skills: independently explore the topics covered through individual study of textbooks and teaching materials, and integrate the knowledge acquired with concepts from related biological and environmental disciplines.

Course Structure

The course is delivered through interactive lectures, supported by PowerPoint presentations and other multimedia tools. Active participation and discussion of the topics presented help students develop an understanding of ecological processes, the ability to make connections among different topics, and the use of appropriate scientific terminology.

If the course is delivered in blended or remote mode, appropriate adjustments may be made to the above in order to ensure consistency with the programme set out in this syllabus.

Required Prerequisites

Basic knowledge of mathematics, chemistry, physics, and statistics is important, together with basic knowledge of botany and zoology and an understanding of the concepts of species and biodiversity.

Attendance of Lessons

Attendance is mandatory, as provided for by the degree programme’s academic regulations.

Detailed Course Content

Scope and limits of ecology - Ecosystem and its properties; emergent properties. Biotope, Biocoenosis. Habitat and ecological niche: concepts and definitions - Gause’s principle - Ecological compression hypothesis. Relationships between organisms and their environment - Environmental resistance - Continental drift, biogeographical regions and distribution of organisms. The physical environment – Soil, water - Physical and chemical variables. The main biogeochemical cycles: water, carbon, nitrogen, phosphorus, sulfur. Concept of population - Population properties and dynamics - Methods for estimating population size - Logistic equation - Demographic analyses - Evolutionary strategies. Population regulation - Exponential growth - Regular or irregular cyclic fluctuations - Density-dependent and density-independent factors - Territoriality. Limiting factors - Liebig’s law - Stoichiometric ecology - Ecological valence - Optimization theory - Optimal foraging - Reproductive and parental strategies - Alternative strategies - Functional traits - Ecological pyramid, food webs and energy flow - Networks - Allometry and isometry - Primary production - Relationships between organisms - Ecological succession - Concept of climax - Biomes - Disruption of biogeochemical cycles, pollution and desertification - Ecology and sustainable development - Fragmentation and stress ecology - Ecological footprint - Biodiversity and stability: a functional concept.

Textbook Information

  1. M. Begon, J. L. Harper & C. R. Townsend - Ecology: from individuals to ecosystems. Blackwell/Wiley.
  2. Smith Thomas M. , Smith Robert L. - Elements of Ecology. Pearson Education 

Course Planning

 SubjectsText References
1Ecological niche: concepts and definitions - Gause’s principle1, 2
2Relationships between organisms and their environment - Environmental resistance - Continental drift, biogeographical regions and distribution of organisms.1, 2
3Ecosystem and its properties; emergent properties. Biotope, Biocoenosis. Habitat1, 2
4Soil, water - Physical and chemical variables - Evolution during the Quaternary1, 2
5Biogeochemical cycles. Carbon, nitrogen and phosphorus - Stoichiometric ecology - Liebig’s law1, 2
6Territoriality. Limiting factors - Ecological valence1, 2
7Autecology - Functional traits - Primary production1, 2
8Concept of population - Population properties and dynamics - Methods for demographic estimation - Logistic equation - Evolutionary strategies. Population regulation - Exponential growth1, 2
9Synecology - Allometric relationships - Ecological pyramid, food webs and energy flow - History of food-web visualization - Interactions among organisms - Ecological networks1, 2
10Ecological succession. Primary and secondary succession - Concept of climax1, 2
11Biodiversity and stability1, 2
12Agroecosystems - Ecological footprint1, 2
13Biomes: general characteristics and distribution. Characteristics of the main terrestrial biomes1

Learning Assessment

Learning Assessment Procedures

Learning will be assessed through an oral examination aimed at evaluating the student’s knowledge and critical understanding of the topics covered in the course syllabus. The assessment will take into account the relevance and completeness of the answers, the ability to make connections among the different course topics, analytical and reasoning skills, as well as the appropriate use of scientific terminology and clarity of expression. 

Learning assessment may also be carried out online, should circumstances require it.

To ensure equal opportunities and in compliance with current legislation, interested students may request a personal meeting in order to arrange any compensatory and/or dispensatory measures, based on the educational objectives and specific needs. Students may also contact the CInAP referring teacher within their Department.

Examples of frequently asked questions and / or exercises

  • Emergent properties in ecological systems
  • Concept of biotope and biocenosis
  • Habitat and ecological niche
  • Competitive exclusion principle (Gause's principle)
  • Carbon, nitrogen, and phosphorus cycles
  • Definition and parameters of a population
  • Exponential and logistic population growth
  • r/K reproductive strategies
  • Ecological successions and the climax concept
  • Main terrestrial biomes
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