Showing results for: Ecosystems and ecosystem services
Some conservationists propose a “Half Earth” strategy, whereby half of the Earth’s land and half of its sea would be set aside for natural ecosystems. This paper assesses the number and geographical distribution of people who could be affected by the Half Earth conservation plan.
This report, commissioned by the Wildlife Trusts (a group of UK charities), summarises existing evidence on declines in insects, many types of which have substantially decreased in abundance since 1970 (see for example Worldwide decline of the entomofauna: A review of its drivers). It also explores the drivers of these declines and calls for an urgent halt to “all routine and unnecessary use of pesticides”.
In this blog post, Asaf Tzachor of the Centre for the Study of Existential Risk at the University of Cambridge describes four pathways by which the global food system could collapse. He calls for greater awareness that interactions between different processes (such as ocean acidification, climate change, wildfires and plant diseases) could lead to vicious cycles, and argues that policymakers should seek leverage points in the food system.
On 22 September 2019, the Food and Land Use Coalition hosted the event "Securing Our Future: People, Food and Nature Solving the Planetary Emergency", which set out how leadership and innovative partnerships can change food systems to promote livelihoods while protecting ecosystems and the climate.
This policy brief from the US non-profit think tank Peterson Institute for International Economics argues that the Amazon rainforest could reach a “tipping point” as soon as 2021, where deforestation means that the forest no longer generates enough rain to support itself and the forest begins to release large amounts of carbon instead of storing it.
The Oxford Martin School has helped to develop NaturEtrade, an online marketplace for ecosystems services. Landowners or managers can set a price that they would accept in return for keeping their land in its present ecological condition, rather than putting it to other uses that might degrade it. Buyers who want the land to remain unchanged, e.g. a business further downstream that wants to limit flooding, can enter into a contract with the landowner or manager.
According to this study of farmland birds in Finland, bird abundance is positively correlated with the nearby presence of organic animal farms, as well as the percentage of nearby field cover and the presence of natural grasslands.
This report from UK charity Rewilding Britain argues that rewilding peatlands, heathland, native woodlands, saltmarshes, wetlands and coastal waters in the UK could sequester carbon and also produce other benefits such as flood mitigation, enhanced biodiversity and water quality improvement.
This report from the UK think tank Green Alliance sets out how the UK could bring its land use emissions to net zero. The actions proposed include ecosystem restoration, planting new areas of woodland, capturing carbon in soils, and reducing demand for meat and dairy.
This report from the Animal Law and Policy Programme at Harvard Law School estimates the carbon sequestration potential of converting UK land currently used for animal agriculture into native forest. The remaining cropland is enough to provide more than the recommended calories and protein for all UK residents, according to the authors.
Schools strike climate activist Greta Thunberg, along with several scientists, authors and campaigners, has called for “natural climate solutions” to tackle climate change and biodiversity loss simultaneously.
This report from the UK’s Office for National Statistics estimates the value of ten ecosystems services provided by natural capital in Scotland. Information on agricultural biomass (including fish capture) and carbon sequestration may be of particular interest to FCRN readers.
This report by US non-profit Centre for International Environmental Law reviews research on the human health impacts of plastics throughout their lifecycle, including extraction of fossil fuels, refining and production, consumer use, waste management, fragmenting and microplastics and accumulation of plastics in food chains.
This study surveys declining pollinator populations and the threat to agricultural production this poses at a time when (the paper argues) higher yields and farm efficiencies are needed. It outlines how woody habitats such as trees and hedgerows can be used on agricultural land to aid conservation of pollinators.
In this report, the UK think tank Green Alliance argues that land-based carbon credits could be incorporated into a ‘Natural Infrastructure Scheme’ (NIS), a scheme previously proposed by the Green Alliance.
This report from the FAO reviews the state of ‘biodiversity for food and agriculture’, i.e. any biodiversity that contributes in some way to food production. It finds that 26% of livestock breeds are at risk of extinction. Crop diversity is declining, with only 9 crop species accounting for 66% of crop production. One third of fish stocks are overfished, and a further 60% are being fished at their maximum sustainable capacity.
Over 40% of insect species are at risk of extinction over the next few decades and 75% to 98% of insect biomass has already been lost, according to this review of the current state of knowledge about insect declines, with habitat loss through conversion to intensive agriculture being the main driver. Agro-chemical pollutants, invasive species and climate change are also driving insect declines.