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Yarnauwi Farm

~ Fleurieu Peninsula, South Australia

Yarnauwi Farm

Tag Archives: ecology

Towards a seasonal calendar

01 Thursday Oct 2020

Posted by sophie in ecology, planning

≈ 8 Comments

Tags

calendar, ecology, Kaurna calendar, planning, seasons, summer, winter

Observing…

As anyone who lives on the Fleurieu would have observed, our seasons do not really match the classic four seasons of the European calendar. Our hot “Summer” weather lasts well into mid-Autumn, our “Winters” are mild and snow-free, our “Spring” flowers often blossom in August, and prevailing winds change direction at different times of the year.

The Kaurna Seasonal Calendar, from the Bureau of Meteorology Indigenous Weather Knowledge project.

It makes sense that bioregions need their own calendar, and in our region, the Kaurna seasonal calendar provides an insight into the patterns of our landscape. In contrast to the fixed three-month quarters of the European calendar, the Kaurna calendar instead is responsive to a critical mass of natural phenomena being reached: the life stage of certain plants, the movements of animals, as well as the prevailing winds and weather patterns. Some seasons may not occur at all in some years. Such a calendar indicates a breathtaking depth of landscape knowledge. The Kaurna seasons are described by Scott Heyes in his thesis, with versions also published in Adelaide: Nature of a City, and Adelaide: Water of a City, available at your local library! Artist James Tylor has also written a fantastic summary of the seasons and associated wild foods. The calendar is also documented in the Bureau of Meteorology’s Indigenous Weather Knowledge project.

The four main Kaurna seasons are:

Warltati – approx Jan-March – Hot season
Parnati – approx April-June – Windy season
Kudlila – approx July-September – Wet season
Wirltuti – approx October-December – Mild warm season

The complexity and depth of Kaurna knowledge of landscape and seasons is astonishing. As recalled by one colonial observer “WGR” on the Fleurieu, during the gold rush, many white men on the Fleurieu left for the gold rush in Victoria. This saw a period when Aboriginal people assumed much of the work on settler properties throughout the region. WGR describes how, “The youngsters went hunting and fishing with the natives, and learnt a lot of things unknown to the average white about birds, animals and fish. Shoals of mullet visited the coast at times. Dick [an Aboriginal worker] promised to let us know when they were coming. One night he roused me up … Off we went, and sure enough there were great numbers passing along the sandy beach going south. Asked how he knew it, he pointed to a particular star in the south-east. “Yes, but how about this?” “Well, my father tell me.” It is remarkable that more than 60 years afterwards an aboriginal gave the same reply regarding the movements of another variety of fish.”

Inspired by the depth of Aboriginal seasonal knowledge, we came across the ‘Seasonal Signpost Calendar’ concept by artist Sofia Sabbagh. She describes it as “a means to track and cultivate the noticing of our environment; native and non-native species, and to link our personal lives with the cycles of our environment”. To support this, Sofia suggests a series of questions:

  • What is changing in my local environment?
  • How is the soil?
  • How is the creek?
  • Which birds are appearing?
  • How might this environmental change affect another plant or animal? What is the flow on effect?
  • Which plants/animals do I notice?
  • Which plants/animals appear in significant times of my life?
  • Which plants/animals do I most obviously affect?
  • Which plants/animals most obviously affect me?

Inspired by Sofia’s calendar, for the past 12 months we have been observing and recording all the changes we notice in soil, moisture, weather conditions, fungi, plant and animal life.

The Yarnauwi Seasonal Calendar, now in its second year.

Now we are into our second year of the calendar, patterns are starting to emerge. For example, it turns out that the pair of Adelaide Rosellas which we thought we saw sporadically actually consistently stay on the property from May-August and we see them every visit, and then they go somewhere else. And we start worrying about the Wedge-tailed Eagles when we don’t see them for awhile, but it turns out that summer is more commonly when they soar above us, whereas the Nankeen Kestrel is year round. And all our various species of Acacia/wattle started flowering in the same week this year as they did last year, despite the fact that we had a wetter year.  

The climate and landscape-responsive Kaurna seasons provide a central touchstone for our own observations.

We are really interested to see where this calendar takes us, especially as we start to get an understanding of what environmental phenomena trigger other environmental phenomena. This will help us plan when we need to do work tasks (planting at the best possible time, slashing turnip weed before seed set, collecting native seed, making sure our bees have enough pollen and nectar options etc), but more importantly help us develop that deeper connection with the land. We really want to know how the ecosystem all fits together and how everything is synchronised so we can work with the land not against it.

Yarnauwi (Virtual) Farm Tour 2020

09 Thursday Apr 2020

Posted by Joel in events, history, regeneration, trees, waterways

≈ Leave a comment

Tags

ecology, erosion, events, farm, Fleurieu, Fleurieu Coast, permaculture, revegetation, soil, southwestern Fleurieu, tour, trees, water

There’s been so much growth and change at the farm over the last year that we really wanted to share with our team of volunteers and supporters. However, with everyone staying in their postcode this holiday weekend and farm tours suspended for the foreseeable future, we thought we’d put together a little video so you can still enjoy the big skies of the Fleurieu! Take care, and we hope to see you back under the trees soon!

Tiny communities

27 Monday Jan 2020

Posted by Joel in ecology, regeneration, trees

≈ 2 Comments

Tags

ecology, farm, Fleurieu, Fleurieu Coast, insects, photography, revegetation, seasons, southwestern Fleurieu, spiders, summer, trees

New growth on a red gum sapling.

We’ve been talking a bit recently about when a woodland becomes a woodland. Asher suggested 500 years of growth, but was willing to settle for 50. Perhaps it’s a woodland when the birds think so, when the firetails and blue wrens jump the boundary fence from neigbouring scrub and decide they’re safe flitting from branch to branch. As our earliest plantings grow taller than humans, and the canopies thicken and throw shade, we started noticing an increasing diversity of tiny life. Insects for whom a gum or wattle tree is their universe are finding their way across the paddocks to settle in the emerging plantings. Despite the heat and dry of summer, the trees are heaving with insect life. We recently saw the documentary The Biggest Little Farm about an idealistic (and evidently well-funded!) couple who start a diverse 200 acre farming project outside of Los Angeles. One of the messages of the film is that when you create the right conditions, nature finds a balance. As we walked through the saplings, on one, the new growth and leaves were being systematically devoured by small copper coloured beetles. We walked to the next tree, the copper beetles were present, but as we watched, were body slammed by wasps and carried away. At the next, the beetles had been busy, but now a spider had arrived, and was meticulously wrapping the beetle population in silk. Perhaps these tiny communities are beginning to find the balance too.

Here’s a tour of some of the life on the trees – we’d love your help with identification!

Beetle eats leaf.

Spider eats beetle.

Ants farm aphids on an Acacia.

A huntsman and egg sac.

Leafhopper, with comrades.

Two-spotted cup moth caterpillar.

Case moth cocoon, constructed from silk and twigs.

Ants on twisty leaves. What’s going on?!

Wasp galls on a golden wattle.

Year of Fire: Annual Report 2020

27 Monday Jan 2020

Posted by Joel in ecology, planning, regeneration, trees, waterways

≈ 2 Comments

Tags

annual report, books, ecology, erosion, farm, Fleurieu, Fleurieu Coast, kangaroos, livestock, permaculture, photography, planning, revegetation, seasons, soil, southwestern Fleurieu, summer, trees, winter, yarnauwi

A melted tree guard shrink wraps a seedling after a fire move through part of the property in January 2019.

2019 began and ended in fire. In early January, some errant fireworks set off by passers-by landed in one of our front paddocks, burning across a couple of hectares of our property. We were lucky. There was little wind, and it was quickly noticed and contained by our amazing neighbours and the CFS. Meanwhile, in Tasmania, fires ripped through the forests, and by spring and early summer, vast tracts of the east coast and Kangaroo Island were catastrophically aflame once again. While we’ve escaped the drought and bushfires that have gripped so much of the continent, these phenomena have served to focus our goals and aspirations in 2019. It’s been a year of learning as we work towards a more regenerative approach: ultimately building soil and harvesting water and carbon in the landscape.

2019 had the dubious distinction of being Australia’s hottest and driest year on record. It got pretty warm in the shed.

Learning
Our regenerative aspirations have been focused by some outstanding events this year. In June, we attended the Deep Winter Agrarian Gathering in Willunga, drawing together 150 aspiring and established regenerative farmers from around Australia to share skills and ideas. Former CSIRO microbiologist and climate scientist Walter Jehne set the tone with a rousing and inspirational keynote on restoring natural processes through agriculture to cool the climate.

The Food Forest’s Annemarie Brookman with Gardening Australia’s Costa Georgiadis at Deep Winter, Willunga.

Continue reading →

Winter work: erosion control in dispersive soils

11 Sunday Aug 2019

Posted by Joel in diy, ecology, regeneration, waterways

≈ 4 Comments

Tags

building, ecology, erosion, farm, Fleurieu Coast, permaculture, revegetation, seasons, soil, water, waterways, winter

Some of the challenges of our landscape regeneration efforts have been both working to restore eroded badlands in some parts of the property, as well as to arrest continuing erosion. To make matters more complex, some sections of the property have “dispersive” subsoil. While the topsoil is relatively stable, when the subsoil becomes saturated it dissolves and begins to move, hollowing out tunnels beneath the surface that ultimately collapse into sinkholes, and eventually gullies. Of course, because it’s all happening underground, tracking or predicting which areas are vulnerable, or already cavernous is tricky.

Over the last seven years, we’ve been gradually working our way around the property installing erosion control structures, based on the work of permaculture-based landscape restoration folk like Craig Sponholtz and Bill Zeedyk. Hailing from the dry southwest of North America, Sponholtz and Zeedyk advocate applying small and slow interventions that use local materials to slow water flows and gradually heal erosion. In the permaculture spirit of viewing problems as solutions, our junk-filled erosion gullies have provided a seemingly inexhaustible supply of demolition rubble, concrete chunks and segments of brick walls that are ideal material for these structures.

This headcut just keeps moving, despite the perennial grasses and good ground cover.

One of the sections that we’ve avoided is a notorious headcut that our DIY soil tests showed us boasted slaking soil that disintegrates when moist and subsoil that was also more saline than other locations around the farm. With saline subsoil, most plants wanted to avoid getting their stabilising roots down. Tree-planting was also fraught, survival rates in the saline subsoil and cracking grey topsoil were low and  the very process of digging a small hole for a seedling can be enough to expose the subsoil so that next time there was a downpour, a sinkhole would open and swallow the seedling, tree guard and all. With the headcut moving about a metre a year and also widening, we thought it was time to get stuck in. At the very least, we’ve discovered that doing something is better than doing nothing and the act of getting in there and digging around allows for more accurate monitoring and effective intervention. Continue reading →

Deep Winter comes to the Fleurieu!

16 Tuesday Jul 2019

Posted by Joel in events, food, livestock, regeneration

≈ 4 Comments

Tags

agrarian, conference, deep winter, ecology, farm, farming, Fleurieu, Fleurieu Coast, food, gathering, livestock, permaculture, regenerative agriculture, soil, winter

Joel dusted off his design degree to contribute a logo to the gathering.

Each winter since 2015, aspiring and established small-scale and regenerative farmers and their supporters and allies have gathered somewhere in Australia as part of the Deep Winter Agrarian Gathering to share ideas and inspiration for their projects and enterprises. In June 2019, this convergence drifted westwards to be held in Willunga, South Australia, and we were delighted to participate.

150 aspiring and established regenerative farmers, growers and their friends gathered in Willunga, SA, for the Deep Winter Agrarian Gathering.

The tone for the convergence was set with a keynote from former CSIRO microbiologist and climate scientist Walter Jehne, who spoke on the role and responsibility of rebuilding soil carbon and water cycles through agriculture and land management. Through his inspiring presentation, Jehne drew on indigenous land management as described in the work of Bill Gammage and Bruce Pascoe to also establish a precedent for the capacity of Australian soils to hold significant amounts of carbon and water.

Walter Jehne, in full flight.

Continue reading →

Yarnauwi Treefest 2019

10 Monday Jun 2019

Posted by Joel in diy, ecology, regeneration, trees, waterways

≈ 8 Comments

Tags

design, ecology, erosion, events, farm, Fleurieu, Fleurieu Coast, nursery, permaculture, propagation, revegetation, seasons, soil, trees, water, waterways, winter

A serial tree-planter manages to synchronise his outfit with the colouring of Eucalyptus occidentalis.

A couple of days before this year’s tree planting, I rang our friend and regular tree-planter Jeremy, and told him that three out of four family members were sick with the flu and we were thinking of cancelling this year’s planting weekend. He didn’t accept that proposal, effectively telling us that tree planting would happen regardless of our involvement, that between his family and another they would take care of catering, rally the volunteers and get the trees in the ground.

It has always been an aspiration of ours that the farm might offer a place for people to be able to develop connection with the landscape through collaboration on land-based projects – “where people and the landscape can restore each other”. I hope that Jeremy’s response, and the support of our friends and community over the last seven years of tree-planting is an indication of this aspiration in development. In this spirit, this year we were also delighted to host regenerative side projects such as Steven Hoepfner’s seed ball regeneration experiment, and provide a waterway for Sue and David Speck’s sedges, and a forever home for Greg Wood’s trees.

Steven’s seed ball project: local provenance bundles of seed and nutrients distributed across revegetation zones to germinate when the conditions are right.

Continue reading →

Nightlife in the Country

08 Saturday Jun 2019

Posted by Joel in art & craft, ecology, exploring

≈ 4 Comments

Tags

camera, ecology, farm, Fleurieu, Fleurieu Coast, fox, kangaroos, photography, seasons, southwestern Fleurieu, trees, wildlife

A little while ago I received a motion camera, triggered by movement and able to shoot in complete darkness with an infra-red flash. I mounted it on a fence post, scattered some food scraps in front and left it for a week. Over the week it’s offered us a fascinating window into the life of the farm.

Curious kangaroo

Boxing match

The fight gets out of hand

Persistence is rewarded

Very curious kangaroo.

Unsurprisingly, the hordes of kangaroos feature heavily. They graze through the day and night, occasionally box, and one problem-solver has multiple attempts at reaching  the enticing leaves of a mesh-guarded sapling. Continue reading →

Not ‘if’, but ‘when’: planning for fire

07 Monday Jan 2019

Posted by Joel in ecology, planning, regeneration, trees

≈ 5 Comments

Tags

bushfire, climate change, design, ecology, erosion, farm, fire, Fleurieu, Fleurieu Coast, permaculture, planning, resilience, revegetation, seasons, soil, summer, trees, zones

Melted tree guard on a eucalyptus seedling.

A few evenings ago, someone set off fireworks on the road beside our property. Embers from the fireworks landed in the grass on the property boundary and quickly took, spreading through the dry summer grass along the fence and down a drainage line. Thankfully, our neighbours quickly noticed and set to work with their own fire unit while awaiting the arrival of the police and Country Fire Service. The blaze was contained with minimal damage, but it’s stimulated us to revisit our property plans and consider how we’re designing for the inevitability of fire.

Scorched earth and singed trees.

Continue reading →

Farming fungi

11 Saturday Aug 2018

Posted by Joel in ecology, exploring, regeneration

≈ 3 Comments

Tags

ecology, farm, Fleurieu, Fleurieu Coast, fungi, mycorrhiza, photography, revegetation, seasons, soil, southwestern Fleurieu, trees, winter

Getting excited about fungi on a wet day at Hindmarsh Falls, Fleurieu Peninsula.

In the last year or so we’ve really begun to appreciate the importance of fungi in a living landscape. The fungi (toadstools, mushrooms and so on) we see pop up after rain are the fruiting bodies of sometimes vast underground fungal networks. Some of these fungi form relationships with plant roots that are often mutually beneficial and enhance the plant’s ability to access nutrients and moisture. The Australian National Botanic Gardens suggest that some 80-90% of Australian plants form or benefit from mycorrhizal networks (fungal associations), and may derive up to 30% of their food through this symbiotic relationship. Continue reading →

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