Biology Prac Report

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- BIOLOGY ASSIGNMENT

Aim: To investigate the types of producers and animals in the tidal rock-shelf ecosystem and the adaptations of organisms in that environment. Also, to measure biotic and abiotic components and the distribution and abundance of organisms to the tidal rock- shelf ecosystem.

Introduction: Long Reef Marine Reserve was established in the 1980’s to protect the extremely diverse marine life that makes the most of this environment. The Marine reserve covers the large rocky peninsula and the neighboring rock platforms between Long Reef and Collaroy beaches on Sydney's North Shores. The date of the field trip to investigate Long reef marine reserve was the 4th of April. Materials Used to Collect Data: - Transect Marker String - Quadrat - Thermometer - Universal Indicator - Refractometer - Four Sample Bottles

Method: During the Field Trip, a range of sampling techniques were used to collect various abiotic and biotic data. This included Transects, Quadrats, Salinity and pH Levels, and The Temperature of various areas.

- A Transect line was used to take a random sample of organisms that occur on the sloping rock on the edge of the rock platform. Organisms generally occupy and dominate specific zones. This sampling technique was carried out by constructing a line transect to examine the rock platform from an area of extreme low tide to an area of extreme high tide. Starting at the 0m mark the dominant organisms were identified at each meter. This information was graphed on a diagram.

- A Quadrat was used to measure the distribution and abundance of the Tidal Rock-shelf Animals. The 1m squared Quadrat was randomly placed at three different locations that were

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