Ecological Restoration in a Changing Biosphere

If you were at the MBG Fall Symposium, we want to hear from you! How did the symposium change your perception of restoration? Send us an email at leighton.reid@mobot.org.

On October 8th, Missouri Botanical Garden hosted its 63rd annual Fall Symposium. This year’s theme was Ecological Restoration in a Changing Biosphere. Author and journalist Paddy Woodworth moderated the day, and seven speakers presented contemporary perspectives on a core challenge in modern restoration ecology. Namely: in the post-COP21 world, when all three UN conventions call for scaling up and mainstreaming of restoration, it is clear that restoration will affect hundreds of millions of hectares – and as many people – over the coming decade. At the same time, we find ourselves in an era of unprecedented change where climate, ecological baselines, and future land-use changes are highly uncertain. This raises the question: What should large-scale restoration look like in the remainder of the 21st century?

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2016 Fall Symposium speakers. From left to right: Peter Wyse Jackson, Curt Meine, Robin Chazdon, James Aronson, Leighton Reid, Pedro Brancalion, Karen Holl, Don Falk, Paddy Woodworth, and Jim Miller. Photo by Andrea Androuais.

Talks during the morning focused on tropical forests, where much of the international restoration dialogue is focused.

  • Leighton Reid (Missouri Botanical Garden) opened with a presentation on restoration longevity – the idea that some restoration projects create ecosystems that persist for more than a century (e.g., Floresta da Tijuca), while other projects fail quickly. Dr. Reid argued that how long restored ecosystems persist is quantifiable, predictable, and manipulable, opening the possibility for more ambitious restoration planning.
  • Robin Chazdon (University of Connecticut and beyond) then spoke about forest landscape restoration, an approach that aims to regain ecological integrity and enhance human well-being in deforested, human-impacted, or degraded forest landscapes. Drawing on a wealth of large-scale studies, Dr. Chazdon made the case that natural forest regeneration is the most ecologically effective and economically feasible approach to forest restoration globally.
  • Karen Holl (University of California Santa Cruz) presented her take on research priorities for forest restoration in the Neotropics. She highlighted that researchers could make an impact by studying forest restoration at larger spatial scales, at longer temporal scales, and in collaboration with stakeholders. Improving information exchange and standardizing monitoring protocols were also among her top priorities. (Graduate students, take note!)
  • Dr. Pedro Brancalion (University of São Paulo) completed the morning session with a TED talk-style discussion of the linkages between science, technology, policy, and best practice in Brazilian Atlantic Forest restoration. Using Thomas Kuhn’s structure of scientific revolutions, Dr. Brancalion argued that restoration ecology is in a crisis period, in part because disciplinary research has predominantly created solutions at smaller spatial scales than the (growing) problems the discipline seeks to address. Perhaps restoration is ripe for a paradigm shift?
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Dr. Pedro Brancalion (right) asks whether restoration ecology is ready for a new paradigm shift, as Paddy Woodworth (left) moderates. Photo by Robin Chazdon.

After lunch, the conversation turned towards a major academic debate in restoration ecology. Has global change outpaced the restoration approach? And is a new approach needed?

  • Curt Meine (The Aldo Leopold Foundation) drew on his long experience in the upper Midwest, and, in particular, his studies of author and environmentalist Aldo Leopold (1887-1948). He argued that Leopold avoided the simple polarities through which some contemporary restoration debates are framed. He viewed nature in a relative way, neither entirely wild, nor entirely domesticated in any given landscape. Although he practiced ecological restoration in some contexts, he also advocated soil conservation and sustainable agriculture – activities motivated by his core values, as expressed in The Land Ethic (1949).
  • James Aronson (Missouri Botanical Garden) followed with an elucidation of the reference ecosystem concept. Reference ecosystems, he noted, help determine the social and ecological vision for a restoration project or program – a critical issue for restoring historic continuity in degraded landscapes. Dr. Aronson described a family of restorative actions for achieving progress towards the reference system, drawing on examples from Jordan and South Africa. He argued we need to look deeper into the past and ponder our choices from many angles as we decide how to do more effective restoration at the landscape and larger scales.
  • Donald Falk (University of Arizona) delivered the keynote address. He painted a disturbing portrait: rapid climate change is driving a massive forest-to-non-forest transition in the southwestern United States. In particular, many ponderosa pine forests will not be able to persist in the future where they have been in the recent past and present. Perhaps restoration ecologists should transition too. Rather than “chasing the ambulance”, maybe we could get out ahead of disasters and ease transitions between stable ecosystem states. Anticipating ecosystem transitions could mitigate the loss of ecosystem functioning that accompanies major climate-driven forest fires, but it would require a shift in restoration thinking. Importantly, Dr. Falk noted that ecosystems do not care what words we use – ecosystems respond to actions.

With moderator Paddy Woodworth’s help, we finished the day with a panel discussion, inviting questions from the audience. Among the thoughts and questions that we were left with:

  • Is ecological restoration more difficult in places with greater population density?
  • Should restoration focus on policy, economic, or cultural motivations for engaging people?
  • Are values a better guide for land management than ecological history? Are the two complementary?
  • How can the reference ecosystem concept accommodate rapid biome changes, as we are seeing in the Southwestern USA?
  • What is the way forward to mainstream serious, multisectorial monitoring and evaluation with all these new factors to consider? Who will fund it?
  • To what extent can we move from restoring degraded ecosystems to avoiding degradation in the first place?
  • Can forest landscape restoration and natural forest regeneration bridge the gap between small-scale, past restoration experience and present, large-scale restoration needs?
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PhD candidates Ricardo Cesar (University of São Paulo) and Leland Werdan (University of Minnesota) compare notes on seedling functional traits in dry tropical forest restoration. Leland was the recipient of the annual Delzie Demaree award. Photo by Robin Chazdon.

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More than 150 people registered for the symposium. They came from three continents, five countries, and seven US states.

Post-Mine restoration, the Gondwana Link, and SER Australasia – helping Australia transition towards a restoration culture

In their fourth and last report from arid Australia, James and Thibaud Aronson discuss promising approaches and programs squarely facing the conservation issues that threaten western Australian ecosystems.

Nothing is simple these days: everything is subject to trade-offs. For example, take Australia’s mining industry. The country has long drawn on its enormous mineral wealth, which sustains a significant part of its economic growth. But this takes a huge toll on biodiversity. Kingsley Dixon, with whom we spent a week in the field, helped us understand the situation, and noted that the miners do not have a very good track record of cleaning up after themselves. Today, there are around 50,000 abandoned mines in Australia – sad testimony to the boom and bust pattern that seems to characterize all too many extractive industries everywhere.  However, the pioneering work of Kingsley and his colleagues and students, in the areas of seed science, conservation biology, and restoration ecology, is helping advance the science and technology of restoration. This is difficult business under any circumstances, but especially so in a biodiversity hotspot. He is also extremely active in trying to persuade the mining industry and Australian government to do more and do it better in these areas.

Dr. Kingsley Dixon with a Eucalyptus leucophloia. Pilbara region, Western Australia.

Dr. Kingsley Dixon with a Eucalyptus leucophloia. Pilbara region, Western Australia.

The Mt Whaleback mine has been producing iron ore for nearly fifty years. The pit is half a kilometer deep and 5 kilometers long, and growing. Kingsley Dixon and his team are now involved in a project to restore parts of the site.

The Mt Whaleback mine, in Western Australia, has been producing iron ore for nearly fifty years. The pit is half a kilometer deep and 5 kilometers long, and growing. Kingsley Dixon and his team are now involved in a project to restore parts of the site.

This photo, taken on the other side of the mine, shows the first step of restoration. This involves reshaping the slopes, from the steep ones seen on the right, to gentler ones on the left, which are suitable for planting. This has already cost 1 million dollars.

This photo, taken on the other side of the mine, shows the first step of restoration. This involves reshaping the slopes, from the steep ones seen on the right, to gentler ones on the left, which are suitable for planting. This has already cost 1 million dollars. (And, make no mistake, just about every plant growing on the slopes on the right are exotic invasives.)

Happily, despite the complexity and the obstacles, a few Australian conservation organizations are also engaged in ecological restoration – whether at the site level, or much broader scales.

Many people told us that Australians are truly proud of their unique natural heritage, and the “outback”; it only remains for the government to play a larger role, and support those who are already working towards sustainability and a restoration culture.

One of the largest players is the Australian Wildlife Conservancy (AWC), linked in a small way to the US-based organization, The Nature Conservancy (TNC). The AWC is making significant investments not only in land acquisition for conservation but also conservation research and outreach to the public.

Another example of an outstanding initiative is the 13-year old Gondwana Link, a unique and inspiring venture in the southwest. Indeed, they aim to create a biodiversity corridor 1000 km long, spanning 8 different ecosystem types. We spent several days with Keith Bradby, Chief Executive Officer of Gondwana Link, as well as Mike Griffiths, recently posted to Kalgoorlie, and veteran consultant and restoration practitioner US- born Justin Jonson, learning about the wonderfully exciting work of this coalition. They work both by acquiring pristine fragments, as well as degraded land which they restore, to provide connections between patches of habitat protected in national parks. But even more than their goals, it is their approach that is unique. Instead of coming in and telling everyone who isn’t a conservationist they they’re wrong and evil, they work with the miners, and the farmers, and the various NGOS, to achieve a vision of the landscape where humans and biodiversity can co-exist. For more information, see the chapter on Gondwana Link in Paddy Woodworth’s book Our Once and Future Planet , the first book to present the world-wide scene of ecological restoration to the general public.

The gorgeous Great Western Woodlands, near Norseman, Western Australia.

The gorgeous Great Western Woodlands, near Norseman, Western Australia.

They also have a strong commitment to work with Aboriginal Traditional Owners, of both the Ngadju and Noongar peoples. Aboriginal Australians represent only 3% of the national population of 24,000,000, but finally, and bit by bit, justice is being done. Following the 1993 Native Title Act, and 18 years of shameful litigation, Aboriginal Australians are at last being granted “native title” in their own land, and control a growing percentage of Australian outback. On these recovered lands, some communities are trying to reconcile their truly ancient traditions with sound ecological management appropriate to the new lifestyles they have taken up, and the future they desire for themselves.

Another remarkable actor is the 400 – strong Australasian chapter of the Society for Ecological Restoration (SERA), led by its chair Kingsley Dixon. The challenges they face are daunting, but important and encouraging steps forward are being taken and the network is successfully raising money and doing projects. If one’s government is not helping, after all – as is the case with the current administration in Australia, social networks – of people and institutions – are the key. As we noted in our blogpost from Jordan, last April, another source of hope is the Ecological Restoration Alliance of Botanic Gardens.

To conclude, as Paul Hawken notes in Blessed Unrest,

If you look at the science that describes what is happening on earth today and aren’t pessimistic, you don’t have the correct data. If you meet people in this unnamed movement and aren’t optimistic, you haven’t got a heart.

What unnamed movement? He was referring to the thousands of independent non-governmental groups of people working for joint environmental and social change – not one or the other, but both.

As we discovered, in Australia there are plenty of clear-eyed people in conservation and restoration who do have a heart and who are working for what we would call a restoration culture for the 21st century. There: that’s a name then for the unnamed movement of this century that Hawkins referred to.