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Yarnauwi Farm

~ Fleurieu Peninsula, South Australia

Yarnauwi Farm

Tag Archives: soil

Learning the land with ‘The Biggest Estate on Earth’

12 Saturday Oct 2013

Posted by Joel in ecology, regeneration, reviews

≈ 4 Comments

Tags

books, ecology, history, kangaroos, permaculture, revegetation, soil, trees

In The Biggest Estate on Earth (Allen & Unwin, 2011), historian Bill Gammage describes a detailed vision of Aboriginal land management prior to European colonisation of Australia. While many Australians have a broad sense that “fire-stick farming” was (and is) a tool used by Aboriginal people, The Biggest Estate on Earth begins to fathom how finely tuned Aboriginal fire use was. With fire as one of a suite of tools, Aboriginal people across the Australian continent carved the landscape into a mosaic of ecosystems, each harbouring plants and animals of differing sensitivity to fire, each maintained to maximise ecological diversity and each nested within the other to increase the ease of hunting or harvesting. For Gammage, Aboriginal land management across the continent was directed by three main principles: “ensure that all life flourishes; make plants and animals abundant, convenient and predictable”; and to “think universal, act local”. Continue reading →

The trials of tree-planting: ideas for roo-proofing reveg

01 Sunday Sep 2013

Posted by Joel in ecology, planning, regeneration, waterways

≈ 2 Comments

Tags

ecology, erosion, kangaroos, planning, revegetation, seasons, soil, trees, waterways, winter

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Kangaroos: so cute, yet so merciless.

One of winter’s most exciting prospects was the chance to get some trees in the ground. Our strategy for revegetation has been to try to build islands of vegetation in the most vulnerable areas, with the view to expanding them outwards until they connect up. We were aware that the kangaroos would take an interest, but just how much of an interest we were unprepared for.
Continue reading →

After the rain: erosion control after 6 months

11 Tuesday Jun 2013

Posted by Joel in diy, ecology, regeneration, waterways

≈ Leave a comment

Tags

ecology, erosion, kangaroos, revegetation, soil, trees, water, waterways, winter

IMG_2573

A Juncus seed head on one of the ridgelines.

With a landscape scarred with a history of erosion, and soil associations that the CSIRO SoilMapp discusses in the most nervous of tones, we’d been apprehensive about this season’s heavy rains. After two days of constant downpours, the water sat on the surface, filled every hollow and started to run in strange new flow patterns along the most unexpected of ridgelines. Neighbours told us they hadn’t seen rain like that for some years, and that erosion headcuts had been reawakened all through the surrounding valleys.

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Zephyr Creek before and after: now with less car bodies and more trees!

It was a relief to see that our improvised erosion control strategies (use local materials; slow water flow with rock, fallen timber or mulch; always work on contour; get plants in the ground) had all worked to some degree. Indeed, areas where we had made an intervention, however minor, fared much better than areas without. After the dryness of summer it was unexpectedly thrilling to see water flow, vegetation spring up around the branches we stacked across drainage lines, and most of all, creek banks where we’d removed car bodies didn’t slump and be carried off into the neighbouring paddock.

Continue reading →

The ethics of junk clearing and erosion control

26 Friday Apr 2013

Posted by Joel in diy, regeneration, waterways

≈ 1 Comment

Tags

erosion, permaculture, planning, reuse, revegetation, soil, trees, water, waterways, winter

We’re celebrating the clean-up of what we call Zephyr Creek, after the 1960s Ford that was wedged at the bottom of the gully. Through the work of a local metal removalist, and a bit of time scrabbling in the mud, most of the major rubbish from the creek has been extracted. Inspired by the amazing work on rainwater harvesting and riparian restoration of Brad Lancaster and organisations like the Quivera Coalition, we’ve implemented our own rustic brand of erosion control. It’s not too pretty, but it is inexpensive (free, in fact) to build and maintain, uses available resources and is easy to alter depending on its effectiveness.

IMG_2179IMG_2247IMG_2400– Going, going, gone!

After clearing the rubbish from the creek, we used an A-Frame to measure and mark the contours at two points in the steep bank. We hammered stakes at regular intervals, then built up leaky terraces using scrap construction timber from the gully itself and fallen tree branches. Some of the loose soil promptly settled behind the barriers, and in a few weeks will be planted out with indigenous plants to further stabilise the area.

Continue reading →

The first golden summer

02 Saturday Mar 2013

Posted by Joel in diy, planning, regeneration

≈ 2 Comments

Tags

ecology, events, kangaroos, photography, planning, recycling, revegetation, seeds, soil, summer, trees, waste

Another hot dawn breaks

Another hot dawn breaks

While the sun still has some sting left in it, we’ve now completed our first official summer working with the block. When we settled the contract in late November, we began drafting a phased plan for actions to take over the 2012/13 period and beyond. We intended the first year (at least) to be primarily a process of observing and auditing the property, learning what we can about what is here, what has been and what is possible.

Golden afternoon light on the big red gum and the hills beyond

Golden afternoon light on the big red gum and the hills beyond

Continue reading →

Junk mining: one tonne gone…

17 Sunday Feb 2013

Posted by Joel in diy, regeneration, waterways

≈ 4 Comments

Tags

ecology, erosion, recycling, reuse, revegetation, soil, waste, water, waterways

If anyone asks, we're "agisting ponies". This terrifying rocking horse oversees one of the rubbish piles.

If anyone asks, we’re “agisting ponies”. This terrifying rocking horse oversees one of the rubbish piles.

As we’ve noted in our curated collection of farm-found rubbish, the largely idyllic setting of the property masks a narrow badland of erosion gullies repopulated with human trash. It’s bizarre sifting through it, a process of contemporary archaeology that often strays towards the forensic as we imagine the human story behind the array of objects gradually becoming swallowed beneath sediment and phalaris grass.

Work in progress (17/2/12)

Work in progress (17/2/12).

One of our missions is to clear the large rubbish from the gullies, increasing their habitat value and allowing us to more effectively address erosion and revegetation, while also allowing for the reuse and recycling of the accumulated items. On a blazing February morning, we helped a local scrap dealer begin to extract recyclable metal from one of the most dramatically eroded gullies. In an hour and a half we had well over a tonne of metal, in the form of a deep freeze (packed with coral, rainbow-coloured aquarium stones and empty tins of bourbon and cola), two washing machines, an electric oven and stove, a motorbike, three BMX bikes, an exercise bike, venetian blinds, chook wire, corrugated iron, steel tubing, downpipes, engine parts, metal drums, wheel rims and homemade farm machinery. Continue reading →

Planning for Regeneration

15 Tuesday Jan 2013

Posted by Joel in planning

≈ 3 Comments

Tags

ecology, erosion, kangaroos, permaculture, planning, revegetation, soil, summer, trees, water

IMG_2030Strangely, one of the things that attracted us to this particular patch of ground was its need for regeneration. With only three established trees on all 47 acres, one of our first projects is to plan revegetation in an attempt to return areas of the landscape to a reflection of the Pink Gum Woodland it likely was 180 years ago.

Imagining Pink Gum Woodland, based on local seeds we've gathered. (Illustration by Joel)

My imagined Pink Gum Woodland, based on local seeds we’ve gathered.

In the spirit of the permaculture principle of observation before action, we’ve been restraining our compulsion to do stuff to instead spend the first year or so primarily attempting to learn the patterns of the landscape, auditing what’s here and reflecting on possibilities before we start digging holes. Continue reading →

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