Designer niches - a novel approach to assessing the impacts of agricultural change on biodiversity at multiple spatial scales
Lead Research Organisation:
University of Reading
Department Name: Sch of Agriculture Policy and Dev
Abstract
It is now widely accepted that the intensification in agriculture we have seen over the last 40-50 years has had a detrimental impact on the environment in the UK, Europe and across the globe. One conspicuous change has been the loss of biodiversity (populations of a range of different animal and plants species). As a result, UK and European Government policies now seek to promote what is termed 'multi-functional agriculture' in which the needs of agricultural production are reconciled with objectives for environmental protection, including the conservation of biodiversity. This is challenging because biodiversity health is often assessed at large spatial scales (e.g. national population trends of particular species) whilst agricultural change is implemented at the field and farm-scales. Linking field-scale changes in agriculture with large-scale risks to biodiversity is essential for assessing the sustainability of such changes with respect to biodiversity conservation. If we could understand the risks agricultural change poses prior to or during its introduction, it would allow us to design measures to reduce the risk, and in so doing make the change more sustainable in terms of biodiversity conservation. In response to these issues, we have recently developed a framework for assessing the biodiversity risk of agricultural change to over 400 species of animals and plants in the UK. Our approach links national population trends to field-scale management changes by assessing the extent to which an agricultural change detrimentally impacts the niche requirements of each species. For example, for bird species niche requirements would include nesting habitats, foraging habitats, and the type of food they eat. Using data from the recent past, we have shown that as the extent of these impacts increase population decline becomes more likely, and have subsequently applied this new system to a range of agricultural change scenarios. Although our previous work is promising, it is fundamentally limited in two main ways. Firstly, it only deals with risk. When agricultural land-use changes it might have both risks and benefits to particular species, and we need to understand the net impact rather than just the risk. Secondly, it relies on simple but crude assumptions about the spatial congruence of agricultural change and species' ranges in order to estimate national population trends. Ideally, the response of biodiversity at multiple scales needs to be understood, so that field- or farm-scale changes in agriculture can be linked to biodiversity responses at similar and at larger (i.e. regional or national) spatial scales. Our proposed project aims to address these limitations by developing a new approach for assessing the risks and benefits of agricultural change to biodiversity over multiple spatial scales. Our project will focus on UK farmland birds, which are a valuable indicator for wider biodiversity, and bird populations are an important component of the UK Government's commitments to biodiversity conservation and sustainable agriculture. We have developed a new idea that we call 'designer niches' that attempts to understand how agricultural land-use designs the niche components for about 45 bird species. This involves translating land-use into the quality of nesting and foraging habitats for birds. We will then use this information to understand how bird abundance and their population trends relate to land-use via niche design, and apply these ideas to help us understand how bird populations might respond to future agricultural changes. This work will then be fed into agri-environment policy, and we hope that this will allow us to plan agricultural change more effectively to conserve biodiversity.
Technical Summary
The delivery of sustainable, multi-functional agriculture requires that the needs of agricultural production are reconciled with objectives for environmental protection, including the conservation of biodiversity. This is challenging because biodiversity health is often assessed at large spatial scales (e.g. national population trends) whilst agricultural change is implemented at the field and farm-scales. We have recently developed a framework for assessing the biodiversity risk of agricultural change to over 400 species of animals and plants in the UK. This trait-based approach can accurately predict national population trends arising from field-scale management changes by assessing the extent to which an agricultural change detrimentally impacts the niche requirements of a species. This approach is, however, fundamentally limited in its ability to assess biodiversity impacts at multiple spatial scales. In this new project proposal, we aim to significantly develop this niche-based concept to provide a tool for the assessment of both the risks and benefits of agricultural change to biodiversity across multiple spatial scales. To do this, we will quantify the niche space designed by agriculture at small spatial scales, and explore how niche space relates to the abundance and population trends of individual species using farmland birds as a model system. We will examine how these relationships change spatially, use the niche-based concept to interpret traditional biodiversity and land-use models, and apply our resultant models to illustrate how we can assess the impact of current policy-relevant agricultural changes on biodiversity. Our approach is scientifically novel because it will allow us to explain how land-use change impacts on populations, and apply this understanding to predict the impacts of future change. It will be relevant to researchers, stakeholders and users, and the general public.
Organisations
People |
ORCID iD |
Kenneth Norris (Principal Investigator) |
Publications
Butler S
(2013)
Functional space and the population dynamics of birds in agro-ecosystems
in Agriculture, Ecosystems & Environment
Butler S
(2012)
An objective, niche-based approach to indicator species selection
in Methods in Ecology and Evolution
Rivas Casado M
(2014)
Predicting the impacts of bioenergy production on farmland birds.
in The Science of the total environment
Wade AS
(2013)
Quantifying the detrimental impacts of land-use and management change on European forest bird populations.
in PloS one
Description | We developed a novel approach for translating agricultural land-use change into what we term 'functional space' for farmland biodiversity. This is based on the idea that if farmland is to support stable wildlife populations it needs to provide their key ecological requirements in sufficient quantity and quality. To assess this, we converted agricultural land-use into functional space, and related this to the population trajectories of a range of farmland birds. This allowed us to define threshold levels of functional space that agricultural landscapes need to have to support farmland bird populations. Additional work linked to our grant then applied these ideas to land-use change scenarios relating to renewable energy, and developed the ideas further to select and interpret biodiversity indicators in the UK and Europe. |
Exploitation Route | Details are given in the Narrative Impact section. |
Sectors | Environment |
Description | Our designer niches work generated a novel, objective approach for selecting biodiversity indicators. We were approached by Birdlife International to apply these ideas to the interpretation and development of European bioidversity indicators for forest ecosystems. This work resulted in changes to European biodiversity indicators being used by Birdlife International. |
First Year Of Impact | 2012 |
Sector | Environment |
Impact Types | Societal |
Description | Application of research for Birdlife International |
Amount | £38,000 (GBP) |
Organisation | BirdLife International |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 02/2011 |
End | 09/2011 |
Description | Developing and applying bird models at Marston Vale |
Amount | £32,000 (GBP) |
Funding ID | 5/LA/1174 |
Organisation | Natural Environment Research Council |
Sector | Public |
Country | United Kingdom |
Start | 01/2010 |
End | 12/2011 |
Description | Seminar at AgroTech Paris, France |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Local |
Primary Audience | Postgraduate students |
Results and Impact | Talk to researchers no actual impacts realised to date |
Year(s) Of Engagement Activity | 2012 |
Description | Seminar at Sainsbury Centre, Norwich |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Local |
Primary Audience | Postgraduate students |
Results and Impact | Talk to researchers and members of the public no actual impacts realised to date |
Year(s) Of Engagement Activity | 2012 |
Description | Seminar at University College, Cork |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Local |
Primary Audience | Postgraduate students |
Results and Impact | Research seminar to prospective and actual post-graduate students and other researchers no actual impacts realised to date |
Year(s) Of Engagement Activity | 2013 |