Search found 12 matches

by Dust
Mon May 14, 2018 11:00 am
Forum: All General Questions about NSF
Topic: Positive Water Pressure on the Slopes
Replies: 6
Views: 437

Re: Positive Water Pressure on the Slopes

Thank you - that worked.
by Dust
Mon May 14, 2018 10:52 am
Forum: Interesting Subjects and Discussion
Topic: Old Australia
Replies: 4
Views: 213

Re: Old Australia

Two more:

Macquarie River, 1815/1816.
macquarie.jpg
macquarie.jpg (163.87 KiB) Viewed 138 times


The Plains (Bathurst presumably), 1815/1816.
plains.jpg
plains.jpg (159.56 KiB) Viewed 138 times
by Dust
Mon May 14, 2018 10:44 am
Forum: Interesting Subjects and Discussion
Topic: Old Australia
Replies: 4
Views: 213

Re: Old Australia

The picture is titled "Sidmouth Valley showing Macquarie River", which would be about 10km WSW of the village of Tarana, near Kinghorne Falls. Probably black swans in the picture. Preferred habitat from Birdlife Australia: "Black Swans...occur wherever there is a wetland , from river ...
by Dust
Wed Apr 25, 2018 3:05 pm
Forum: Interesting Subjects and Discussion
Topic: Old Australia
Replies: 4
Views: 213

Old Australia

... Can you guess (without cheating) which lake in Australia is pictured below? gftrr.jpg Some clues. The year of the drawing is 1815. The area was not settled until 1815. So no clearing of land. Can you guess the trees by the lakeside? Looks like swans and ducks abounding in... the Macquarie River,...
by Dust
Thu Apr 12, 2018 7:29 pm
Forum: All General Questions about NSF
Topic: Positive Water Pressure on the Slopes
Replies: 6
Views: 437

Re: Positive Water Pressure on the Slopes

Thank you for your reply Duane. I think what helps me visualise all this, is you only have positive water pressure working if the landscape is already full of water? That is, whatever moving out of the contours/raised streams has no choice but to ride (through the ground) above the pre-filled clay/f...
by Dust
Wed Mar 21, 2018 8:27 pm
Forum: Interesting Subjects and Discussion
Topic: Eucalyptus Density in CSIRO Study
Replies: 2
Views: 295

Re: Eucalyptus Density in CSIRO Study

Thank you for that.
by Dust
Wed Mar 21, 2018 8:15 pm
Forum: All General Questions about NSF
Topic: Positive Water Pressure on the Slopes
Replies: 6
Views: 437

Re: Positive Water Pressure on the Slopes

I'm seeing a raised creek bed, with the water in it charging laterally out into the lower surrounding floodplain, that water is effectively "springing" "up" out of the surface of the floodplain.
by Dust
Sat Mar 10, 2018 4:34 pm
Forum: All General Questions about NSF
Topic: Positive Water Pressure on the Slopes
Replies: 6
Views: 437

Positive Water Pressure on the Slopes

I can visualise chains of ponds and how that leads to positive water pressure into the floodplain. What I cannot visualise is achieving the same on the steeper country. Can anyone help?
by Dust
Fri Mar 09, 2018 11:46 am
Forum: Questions about the book, 'Back from the Brink'
Topic: Thistle Density
Replies: 1
Views: 316

Thistle Density

On page 131, it is said that a 10% coverage of thistles represents a maintenance level for fertility. 10% of what---the property? 1 in every 10 plants?
by Dust
Fri Mar 09, 2018 11:36 am
Forum: Questions about the book, 'Back from the Brink'
Topic: Surface Fertility and Grass Roots
Replies: 1
Views: 128

Surface Fertility and Grass Roots

The book mentions a number of times to concentrate organic compounds at the surface for that is where grass obtains most of its fertility from. I thought that grass roots went many feet below the surface. So I'm not sure why there is a concerted advocacy in the book for keeping the fertility at the ...
by Dust
Fri Mar 09, 2018 11:16 am
Forum: Questions about the book, 'Back from the Brink'
Topic: Trees on Tarwyn Park
Replies: 1
Views: 122

Trees on Tarwyn Park

Apart from the gallery forest running through the property, there doesn't seem to be many trees at Tarwyn Park. I thought the book advocated tree belts on contour, on the high points etc.
by Dust
Fri Mar 09, 2018 10:46 am
Forum: Interesting Subjects and Discussion
Topic: Eucalyptus Density in CSIRO Study
Replies: 2
Views: 295

Eucalyptus Density in CSIRO Study

I heard Peter Andrews mention a CSIRO study of an unspoilt intact Australian forest remnant where it was found there was only a limited number of eucalyptus per the hectare. Would anyone have any knowledge of the particular study as I'd like to read its contents.

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