Natural systems

Processes, cycles and circulations

This section introduces the interactions between atmospheric, hydrological, geomorphic and ecological components within the eucalypt forests at the Field of Mars Reserve. It aligns to the following syllabus content:

Time allocation - approx. 90 minutes

Learning intentions

We are learning:

Success criteria

I can:

Location and spatial characteristics

Map 1: Topographic map of Field of Mars ReserveStep Inc I Larger image of the topographic map 

Location

Field of Mars Reserve is a 54 hectare bushland reserve located in East Ryde. It is situated 5 km north-west of the city of Sydney, Australia. 

The GPS coordinates place it at a latitude of -33° 48' 31.06" S and a longitude of 151° 07' 27.02" E. 

The Field of Mars Reserve has a triangular shape which consists of two valleys and a broad central ridge. The Field of Mars Cemetery lies at the top of the ridge but is not managed as part of the reserve. The two valleys were formed by the action of the two creeks that flow from the top of the ridges on their way to the Lane Cove River. Buffalo Creek lies in the southern portion of the reserve and Strangers Creek is situated to the north.

Geomorphic and hydrological systems

Activity 1

Review how to construct a cross section using the NSW Department of Education resources page Cross-sections and transects 

Waterfalls spill over rocky Hawkesbury sandstone outcrops.

Soil formation

Soils are the foundation of an ecosystem. They play a vital role in nutrient cycling supporting primary production, provide habitat for macro and microorganisms and regulate and store groundwater. 

During fieldwork students will investigate soil properties within the eucalypt forest and draw conclusion on how soil interacts with other systems to shape the environment. 

Resources supporting soil analysis can be found in the Resources section of this website.

The factors that influence soil formation include parent material, climate, topography, organisms and time. 

Atmospheric and hydrological systems

Climate

The latitude ( -33° 48' 31.06") places Field of Mars Reserve in a warm temperate climate with clearly defined seasons and year round rainfall. Traditionally, Sydney experiences wetter months in summer and autumn with spring being the driest.

Climate information sources

Coastal sea breezes provide cooler moist air across the Sydney basin. 
Source 1: Mean minimum and maximum temperatures for SydneyBureau of Meteorology | CC BY 3.0 AU | Table of data
Source 2: Average rainfall for SydneyBureau of Meteorology | CC BY 3.0 AU | Table of data 

Activity 2

Access climate data and statistics from the Bureau of Meteorology and describe how global air and water circulations influence the climate of Sydney.