The Daily Grind

The Daily Grind

Yep, it's life on a farm- 'early to rise... early to bed'!

Everyday

• Open door to ARC to enable sun on seedlings/air flow
• Feed peas to Yabbies- not too much not too little
• remove rotting food from aquarium
• Feed pellets to Silver Perch *Tank 6 (stored in plastic container on metal shelf)
• Feed lettuce to snail (lettuce from Canteen, stored in fridge
• Feed lettuce to worms
• check all water levels
• check water quality
• water garden plots
• weed
• water seedling in ARC
• ensure tap key is always returned to ARC
• ensure ARC is always locked ALWAYS!
• all tools returned to ARC- check for damage. NO DAMAGED TOOLS ARE TO BE USED
• no food scraps in ARC, deter rats, mice and cockroaches
• sweep ARC
• collect rubbish, especially rocks etc. from farm and ARC, move to school bins

• Tuesday- 3 * opaque water Jerry cans to PDHPE staffroom to be filled with sea water by beach sport
• Wednesday collect sea water from PDHPE, syphon appropriate litres of water from marine aquarium/s- just enough to enable water exchange to return water level to appropriate level
  

School Certificate Assessment Task- Traditional Indigenous Fishing Practices

Stage 5 Marine and Aquaculture Technology (MAT)

School Certificate Assessment Task- Traditional Indigenous Fishing Practices

Last Possible Date for Submission (Due Date): October 1, 2009
Total Marks: 100

Focus: Traditional Indigenous Fishing Practices. Traditional Use of Marine Resources
Searching the Internet... filtering sites through the use of keywords in Search Engines.
Traditional Aboriginal/Indigenous Fishing Methods- Fish traps, Spear Heads, Fish Hooks, and Grass Nets etc.

1. Describe the appearance and action of traditional Freshwater and Saltwater Fish Traps used by Aboriginal people. You may wish to include sketches/copied images of the traps. (20 marks)
2. Cultural Fishing. How does this impact on modern fishing laws? (10 marks)
   What is a Midden? (5 marks)
3. What marine animals where caught and eaten by indigenous people? Create a table and match European names to Aboriginal names of animals. (15 marks)
   Aboriginal Name European Name
4. What was/is traditional fishing equipment made from? (15 marks)
   Fishing Equipment Traditional Material Used
5. Using traditional, Aboriginal dot painting method complete an Aboriginal painting using the supplied fish template/image. (35 marks)

Spring into ACTION!

Jobs completed @ the ARC

• moved female Yabbie (new mother) from nursery aquarium back to communal tank. Babies doing well (100's)
• moved female in 'berry' from communal tank to a new nursery aquarium
• setup, YET another aquarium for more berried females. Set water heater to approx. 23C
• fed all aquarium/tanks- peas
• water tested Brine Shrimp (Artemia/Sea Monkey) nursery bottles- all needed silicon to prevent leakage. Siliconed and awaiting drying.

*Will add Brine Shrimp either Friday or next week.

http://en.wikipedia.org/wiki/Artemia_salina

Module 22 Aquarium Design Construction and Maintenance
Module 23 Underwater Farming
Module 24 Designing Systems for Aquaculture
Module 26 Growing Stockfeed for Aquaculture
Module 27 Biology of Native Crayfish
Module 28 Growing Crustaceans
Module 29 Fish Biology
Module 30 Managing Fish Production
Module 31 Managing Water Quality

Jingle Berry!

A female yabbie in 'berry', carrying fertilised eggs.

Module 23 Underwater Farming
Module 26 Growing Stockfeed for Aquaculture
Module 27 Biology of Native Crayfish
Module 28 Growing Crustaceans
Module 29 Fish Biology
Module 30 Managing Fish Production

JigSaw

Ornamentals- you can't eat 'em BUT worth $s

Gold Fish



Siamese Fighter Fish

Research: Photo, Water Specifications, Temp, pH, Food, Breeding

• identifies the nature and scope of the marine and aquatic environment
• identifies and describes the components of some marine ecosystems
• identifies the nature and scope of aquaculture
• investigates plant and animal species suitable for aquaculture
• interprets and follows instructions with accuracy
• identifies employment opportunities in aquaculture, marine and maritime industries
• selects and presents the results of appropriate research from a variety of sources
• identifies and describes a range of marine and aquatic ecosystems and investigates their complex interrelationships
• identifies and describes a range of aquaculture, marine and maritime vocations and leisure pursuits
• recalls aspects of the marine environment using relevant conventions, terminology and symbols

Aquaculture Focus
Module 23 Underwater Farming
Module 25 Economics of Aquaculture

On the outta Barcoo...

Barcoo Grunter or Jade Perch

Hell! How many Brine Shrimp eggs? SAMPLING

Brine Shrimp eggs are small... and smelly too! A 'method' used to calculate the total number of small items/animals etc. is to detemine a sample as part of the whole.

In this example the total Brine Shrimp supplied fitted into a:

10cm * 10cm square

A smaller square 1cm * 1cm was placed on the larger sample.

Formula

Total numberofanimals = numberofanimalsinsmallsquare * 100

as there would be 100 1cm squares in a 10 cm square

Feeling Caged In?

Cage Culture

Cage culture is an aquaculture production system where fish are held in floating net pens. Cages are widely used in commercial aquaculture overseas and individual cage units come in all shapes and sizes and can be tailored to suit individual farmer’s needs. Cage units can be purchased through commercial outlets, but can also be made from readily available construction materials such as polypipe, wood or/and steel. Cages can be used in both freshwater and marine environments. The advantages and disadvantages of cages compared with other culture systems, include: Use existing waterbodies, Technical simplicity with which farms can be established or expanded, Lower capital cost compared with land-based farms,
Easier stock management and monitoring compared with pond culture.

Tank Gravel dumped! IN!

Tanks survived the pressure/water test. We NOW begin filling with a gravel base over the gravel filter. AND so begins the movement of sea water from the Rock Pool Boat Ramp...

Water Tight? Alright!

Testing new 'old' Aquarium to be water tight. The silicon holding the
glass can age and ...
All seems good, ready to fill!

Whale of a time?

A NEW Blower to replace our Compressor/air pump (went non stop for 4 years).
AND the return of LG! Thanks Lance for your valued help in installing the blower and returning air to our recirculation system.
The fish, students and community thank LG for his continued commitment to our school and community.

No Lost Fingers!

The proper Handing of livestock is vital. Today showed the respect that our students are developing for our animals and the recognition of animal welfare and care.
Most of the class were confident and held the Yabbie while examining the 'walking legs', sex appendices, exoskeleton while dodging those fierce nippers.
The Yabiies showed the 'flee' reflex by rapidly constricting their tail to 'jet' water and retreat. Although Yabbies do attack, injure and kill other Yabbies they MOSTLY attempt to flee, in order to survive!
Yabbies, unlike fish can survive and 'breathe' out of water for an extended period of time! The secret to this is that Yabbie gills are located behind their exoskeleton and retail water in this cavity. Their gills are also constructed differently so that they DO NOT collapse (like fish). So Yabbies can continue to extract air/oxygen from their gills- even out of water. The Yabbie was returned to Tank 5 to contribute to building the bacteria colony in the biofilter/recirculation system.

* photos on the way

Pollution (Slick) on surface of Tanks 1-2... It's a PROBLEM!

Showing their class as observers... a slick (oil like) has been found on the surface of Tanks 1-2. These tanks have been isolated for over 2 weeks. This also coincides with 3 dead Silver Perch from Tank 5?

Oil and pollution slicks at sea can be tracked back to the source by comparing the chemical make-up of both the slick and different ships ballast/sump or samples taken from other suspect sources. Our priority and limitations are that we need to not focus on blame BUT focus on removal. How might we apply methods, used in sea or fresh water to REMOVE pollutants?
* Dead perch fingerlings removed.

Please comment.

PROBLEM BASED LEARNING (PBL) projects are carefully designed to expose you to the information and skills that we want you to learn.

• A statement of the problem (eg. diseased animal, failing business)
• Questions to consider when solving the problem
• A framework for the time and effort you should spend on the project
• Support: teacher and resources

The problems that you will solve in this course will relate to what you are learning. They are problems that you might encounter when working in that field or related fields, adapted to your level of study.

With PBL, students are assessed on their ability to go through a problem solving process.

What is PBL?

Mov'n Out! Silver Perch transfered to Tank 5

We need to 'charge' the bio filter with 'good' bacteria. These 'good' bacteria feed on the waste products of fish making harmful chemicals like nitrates less harmful.

The Silvers, from the LAB Tank will 'kick start' the bacteria- to help ARC brought in some aquarium 'change' water from home and added it to the tank *this water contains good bacteria.

Underpinning this activity is our dedication to animal welfare and care. We reduced the STRESS of capture and transport, and physical injury by:

1. planning a method of capture that did NOT involve chasing fish around the tank


2. using an 'enviro' net that reduces the risk of damage to fish scales, gills etc.


3. water in the tanks was the same- temp. water quality, pH, etc.

* this process of charging the biofilter will take some weeks.

BLOGGING our BLOG

Although access from within the school is NOT easy! We are beginning to BLOG our BLOG!

Cold Water? Not for Trout! 17C

Using Data loggers we tested water temperature within the tanks in the ARC. 17C chilly... Naaa NOT for Trout. Trout die at 24C and although 17C is a good temperature we have seen in the past that feeding and activity increase under 15C.
Did we tell you that our Trout arrive this weekend?

FREE @ Last- Mussels

After 12 weeks Australian Freshwater Mussels have maintained the individual pond water CLEAR NO Algae!

The Mussels have been retrned to the main tank. We will now observe the changes that may take place in each of the individual (Mussel less) ponds.

We expect that now our natural filters have been removed that we will see Algae growth???

Is it really a 'Life Cycle' if we eat all the Trout?

And you thought it would be simple?

• egg (green eggs and ham, eyed egg,
  hatching egg)
• alevins- (newly hatched, incompletely developed fishes still in nest or inactive on bottom, living off stored yolk)
• fry
• fingerlings
• 'portion size', mature male,
  mature female, normal lifespan

EAT 'em!!!