It's exciting to see a book about wildlife conservation in the UK being a top seller and highly advertised in bookstores. If you haven't heard of the book 'Wilding' yet by Isabella Tree I would highly recommend you pick it up. The book talks about the conservation technique of rewilding (obviously) in the Knepp estate in West Sussex and how this technique can be replicated in other habitats. The book defines this technique as essentially doing nothing. It is removing all intensive management and allowing natural succession of a habitat to occur with minimal human impact or intervention. The idea is that it will increase the population of the native species and possibly attract new species. This can also include the reintroduction of native species that are no longer found in that habitat (similar to my blogpost on beaver reintroduction). However, this is sparking some debate, particularly with locals when this technique is done on open land (or commons) such as Dartmoor which begs the question is a technique that we should be implementing more?
One key idea in this concept is to promote naturalistic grazing patterns to maintain sustainable vegetation levels and provide different exposure levels for a range of species. For example, in her book Tree links the population of Dartmoor ponies to an increase in the rare butterfly species the Marsh Fritillary; an insect that declined in population 66% between 1990 and 2000. She also rights about a study claiming the grazing of ponies has helped to increase the weight in grazing cows as the remove the tough upper layer of grass that bovines cannot digest. Whilst I don't recommend anyone eats meat, there is the argument that farmers can still raise livestock on the moor and can advertise the meat as organic and free range. This is what is done on the Knepp estate and has lead to an increase in profits for the landowners.
Another idea is to remove any intensive management techniques already in place such as drainage channels used in agriculture. The blocking of the channels (also known as grip blocking) will help to restore the water table leading to the reformation of rivers, streams and wetlands. This is what happened on the Knepp estate which has helped to increases the diversity of habitats, and subsequently increased overall species diversity. If this occurred nationwide it could help to increase the UK's ranking on the Biodiversity Intactness Index which is currently 189/218. In areas of Dartmoor this had lead to an increase in Sphagnum, moorgrass, braken and gorse which are the key plants that support endangered habitats such a blanket bogs. If this could be used to increase the size of our peatlands, this could significantly increase the rate of carbon sequestration as peat is a greater store of carbon than terrestrial plants.
The Knepp estate has also seen an increase in eco-tourism as they promote a guided nature walk and a sustainable camping site. Whilst the book does not mention a specific figure in profits, this could help bring tourists to areas, such as national parks, provided that they stick to paths and follow the guides to avoid damaging the plant life. This could create a new economy for locals, reducing our dependence on intensive agriculture which is always a benefit in terms of ethics and climate change.
However there are objections, mainly from farmers. The idea of reducing intensive farming will most likely result in reduced yield as fertiliser and pesticide isn't allowed under this scheme. Reintroduction programmes are also expensive with the beavers in Knapdale costing the Scottish government £2 million which, given the countries current financial state, could be invested in the public sector. Personally, I feel that ethically we should be looking to invest in our conservation and this method can be done on a budget and we need to take any measure we can to improve the state of our wildlife. So to sum up, I think rewilding could be easily implemented by landowners and help improve the UK's biodiversity.
Click here to buy Wilding on Amazon.
