Stage 6 - Biology (Ecosystem Dynamics)

Science

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Program Overview

This unique and highly engaging program allows students to perform a first-hand investigation to measure a range of abiotic and biotic factors in a freshwater ecosystem using various scientific equipment and data collection methods. Students measure populations of organisms using sampling techniques. Students then analyse the data collected and observe the abiotic-biotic relationships that exist and their interdependence. An example of a recent local extinction event through predation is explained. There is also a look at past and future ecosystems at Penrith Lakes.

Students are guaranteed to be involved in a number of engaging and hands on experiences during the course of the day. Through these students will further develop their knowledge and understanding, fieldwork and group work skills.

Focus

Science Focus Area

Stage 6: 'Ecosystem Dynamics' - Population Dynamics

Note:

This excursion can also be used as a model for a DEPTH STUDY.

This program can be combined with the Investigating Science (Cause and Effect) Program.

Water Testing - Abiotic data collection

Macro-invertebrates - Biotic data collection

Bird Observation, Recording and Analysis - Biotic data collection

Measuring slope with a clinometer

Program Activities

Introduction to Penrith Lakes and the development of the local freshwater ecosystem

Recess

Bird Observation, Recording and Analysis - Biotic data collection

Water Testing - Abiotic data collection

Macro-invertebrates - Biotic data collection

Lunch

Wrap up – How healthy is the Penrith lakes Ecosystem? Interpretation of data collected. Human impacts on the ecosystem dating back to the traditional owners is analysed.

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Key Syllabus Outcomes

Stage 6 - Biology - Ecosystem Dynamics - Population Dynamics

BIO 11/12-1 develops and evaluates questions and hypotheses for scientific investigation

BIO11/12-2 designs and evaluates investigations in order to obtain primary and secondary data and information

BIO11/12-3 conducts investigations to collect valid and reliable primary and secondary data and information

BIO11/12-4 selects and processes appropriate qualitative and quantitative data and information using a range of appropriate media

BIO11/12-5 analyses and evaluates primary and secondary data and information

BIO11-11 analyses ecosystem dynamics and the interrelationships of organisms within the ecosystem

Key Content

What effect can one species have on the other species in a community?

Investigate and determine relationships between biotic and abiotic factors in an ecosystem, including:

The impact of abiotic factors

The impact of biotic factors, including predation, competition and symbiotic relationships

The ecological niches occupied by species

Predicting consequences for populations in ecosystems due to predation, competition, symbiosis and disease

Measuring populations of organisms using sampling techniques

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