Assessments of the value of nature (e.g., TEEB. The economics of ecosystems and biodiversity: ecological and economic foundations, London, 2010) have tended to focus on the instrumental values of ecosystem services. However, recent academic and policy debate have highlighted a wider range of values (e.g., relational and intrinsic values), valuation methods (e.g., socio-cultural methods), and worldviews [e.g., indigenous and local knowledge (ILK) systems]. To account for these new perspectives, the Intergovernmental Science-Policy Platform for Biodiversity and Ecosystem Services (IPBES) has developed the concept of ‘Nature’s contributions to people’ (NCP), which aims to be a more inclusive approach to understanding and accounting for the diversity of values held by different stakeholders. In this paper, we aim to critically appraise the merits of the IPBES conceptual framework by reviewing of the findings the IPBES Europe and Central Asia (ECA) assessment. Our objectives are: (1) To review and assess the instrumental and relational values of NCP in Europe and Central Asia? (2) To consider what additional insights into the value of NCP are gained through the inclusion of socio-cultural valuations and ILK? Our analysis demonstrates that the ECA assessment captures a wide range of instrumental and relational values of NCP; however, we acknowledge variation in the availability of this value evidence. We also highlight new insights that can be uncovered through the adoptions of socio-cultural valuation methods and analysis of ILK knowledge. We conclude that the NCP paradigm, with its focus on instrumental and relational values, treats values more holistically than previous assessments such as TEEB (2010). For example, by giving a ‘voice’ to ILK holders, we demonstrated new types of NCP such as carrion removal, along with evidence of relational values including sense of place, identity, symbolic values and sacredness. While the ECA assessments may be defined as an example of a ‘Multiple evidence base’ approach to valuation of ecosystem assessments, the ECA assessment fails to demonstrate how to incorporate this wider range of values in decision-making processes.
Over the past few decades, there has been a growing academic and policy interest in assessing the environmental, economic, and social impacts of biodiversity loss and ecosystem degradation. In particular, the ecosystem services framework has been advocated as a useful tool that provides a holistic and transparent assessment of these impacts on human well-being (IPBES 2018c). Global assessments have been a key driver in the development of this conceptual framework. The Millennium Ecosystem Assessment (MEA) (2005) was instrumental in developing and promoting ecosystem services research. However, the MEA stopped short of assessing the economic values of these services. The Economics of Ecosystems and Biodiversity (TEEB) (2010) report aimed to fill this knowledge gap through a meta-analysis of existing economic (monetary) evidence on the instrumental values of ecosystem services across the different global biomes (de Groot et al. 2012).
Since TEEB (2010), a wider academic and policy debate has been developing concerning how to move beyond a focus on economic values to one that also examines more diverse conceptualisations of values, valuation, and worldviews (Kenter et al. 2015; Costanza et al. 2017; Arias-Arevalo et al. 2018; Braat 2018). This debate has also raised concerns that the ecosystem services framework predominantly focuses on the western, scientific concepts of ecosystem services, and as such often fails to account for the preferences and values associated with indigenous and local knowledge (ILK) systems (Díaz et al. 2018; Kirchhoff 2019). In developing its conceptual framework, the Intergovernmental Science-Policy Platform for Biodiversity and Ecosystem Services’ (IPBES) aimed to account for these concerns.
IPBES was established in 2012 to ‘strengthen the science-policy interface for biodiversity and ecosystem services for the conservation and sustainable use of biodiversity, long-term human well-being and sustainable development’ (https://www.ipbes.net/). In its conceptual framework (Fig. 1), IPBES explicitly acknowledges the wider conceptualizations of values and valuation (Pascual et al. 2017; Diaz et al. 2018; IPBES 2018c). To reflect these advancements, the IPBES conceptual framework coined the notion of “Nature’s contributions to people” (NCP) (Fig. 1). NCP may be assessed from two complementary perspectives (Diaz et al. 2015). First, the generalizing perspective includes 17 NCP, organized into three groups (Fig. 2): regulating, material and non-material contributions [which largely map onto the MEA (2005) regulating, provisioning and cultural services]. Importantly, the IPBES framework shows NCP as overlapping between groups, reflecting the observation that there is often fluidity within NCP, e.g., wild food gathering could be considered as both material and non-material NCP. The second, context-specific perspective includes cultural aspects of ILK and can reflect more holistic conceptualizations of human–nature relationships (Diaz et al. 2015).
In relation to how values are expressed in the IPBES conceptual framework (Fig. 2), NCP are considered to enhance people’s Quality of life in terms of:
Instrumental values These values are often expressed within a total economic value framing and can be classified into (direct and indirect) use values and non-use values (option, bequest, and existence values) (IPBES 2018c).
Relational values The values that contribute to desirable relationships, such as those among people and between people and nature, as in “living in harmony with nature” (Chan et al. 2016; IPBES 2018c).
The IPBES conceptual framework also acknowledges intrinsic values as the value inherent to nature, independent of human experience and evaluation (IPBES 2018c).
Jacobs et al. (2018) found that economic (monetary) valuation techniques predominantly conceive of values as solely instrumental values, whereas socio-cultural valuation techniques consider values as either instrumental (Raymond et al. 2014), relational, or both (Jacobs et al. 2018). Economic valuation techniques tend to express instrumental value of NCP through monetary indicators, elicited using market-based approaches (e.g., market pricing) and non-market monetary approaches (e.g., travel cost method, hedonic pricing, or stated preference methods) (Christie et al. 2012; Jacobs et al. 2018). Socio-cultural valuation techniques tend to elicit values through non-monetary indicators, such as preferences, narratives, or time (Jacobs et al. 2016). While monetary valuation is often framed in the so-called total economic value framework (Pearce and Moran 1994), socio-cultural valuation draws on a wider range of disciplines to examine the importance, preferences or needs expressed by people towards nature (Chan et al. 2012). Since intrinsic values are beyond the scope of anthropocentric valuation approaches (IPBES 2015), we do not consider intrinsic values further in this research.
The IPBES conceptual framework thus aims to draw on recent advances in valuation research to extend, through the conceptualisations of NCP, the integration of diverse values and ILK systems, to show the multiple ways nature contributes to human well-being (Gomez-Baggethun and Martin-Lopez 2015). From a theoretical viewpoint, it could be argued that IPBES aspires to take a ‘pragmatism’ perspective (Moon and Blackman 2014) by embracing different disciplines and knowledge systems in the co-construction of evidence on the state of the world’s biodiversity and the benefits it provides to people (Diaz et al. 2015). However, IPBES does not explicitly set out a single theoretical position to be adopted in ecosystem service assessments. Instead, the IPBES approach for undertaking ecosytem service assessments (IPBES 2015) reflect the multiple evidence base perspective (MEB) (Tengö et al. 2014), in that it seeks to collate knowledge from multiple evidence sources including scientific data and ILK (e.g., Hill et al. 2019). The MEB approach then argues that discussion among all actors involved generate an enhanced understanding of the environmental conditions, which in turn can help identify sustainable management options (Tengö et al. 2014). Based on Barton et al. (2018) typology of decision maker’s requirements, the purpose of the ECA assessment is thus explorative in terms of conducting research aimed at developing science theory and concepts and informative in terms of collating information on, and raising awareness of, the current state, and trends of NCP values in Europe and Central Asia. The ECA assessment, however, feeds into IPBES, which over time also aims to be decisive in terms of generating actions on specific decision problems, and design through the design and implementation of policy instruments to produce outcomes.
In this paper, we aim to critically appraise the merits of the IPBES conceptual framework as an inclusive approach to capturing the diversity of values associated with NCP. Specifically, we draw on the findings the IPBES Europe and Central Asia (ECA) assessment (IPBES 2018c; Martín-López et al. 2018), which is one of the first large scale, regional assessments that have adopted the IPBES conceptual model. To address our research aim, we consider the following research objectives.
To review and assess the instrumental and relational values of NCP in Europe and Central Asia.
To consider what additional insights into the value of NCP are gained through the inclusion of socio-cultural valuations and ILK.
We acknowledge that there has been considerable debate of the IPBES approach, with critics questioning whether the adoption of the NCP terminology is useful in terms of effectively embracing a wider conceptualisation of values than is currently incorporated within the concept of ecosystem services (de Groot et al. 2018; Kenter 2018; Maes et al. 2018). Their arguments being that ecosystem service research is already considering a wider conceptualisation of value beyond instrumental values. Furthermore, others have argued that the concept of value is broader than instrumental, relational, and intrinsic values; for example, Kenter et al. (2015) define shared and social values to include: communal and cultural values, group values, deliberated values, other-regarding values, value to society and transcendental values. The purpose of this paper is not enter into this debate for, or against, NCP over ecosystem services terminology; but rather to demonstrate whether the inclusion of socio-cultural valuation and ILK within ecosystem service assessments is an improvement over previous global assessments, such as MEA (2005) and TEEB (2010).
The IPBES European and Central Asia (ECA) assessment (IPBES 2018c; Martín-López et al. 2018) is one of the four region ecosystem assessments undertaken by IPBES, produced in response to a request from 130 IPBES-member governments. The ECA assessment aimed to demonstrate the importance of nature and associated NCP in the ECA region. In this paper, we review evidence from economic (monetary) and socio-cultural valuation methods of the instrumental and relational values of NCP within the region. Data for the assessment of these values were collated through literature searches of existing value evidence published over the last decade or so: the authors of this paper undertook this evaluation. An aspiration of the IPBES ECA report was to collate this value evidence using a scientifically robust and repeatable approach. Although this was largely achieved, the diversity of values and NCP investigated meant that different approaches and data sources were required to capture the different value types.
Market-based monetary valuation of NCP
Traditional market-based monetary approaches were used to evidence the instrumental values for material NCP. These market data included the mean per Ha profits gained from alternative land uses. Agricultural data were sourced from the Farm Accountancy Data Network (2017), while forestry data were sourced from Eurostat (2016). The values attained were converted to a standardised, International $ (2017) value to allow direct comparison of values. The standardisation procedure involved.
If the value currency was not in the local currency, the value was converted to local currency using the appropriate purchasing power parity (PPP) exchange rates.Footnote 1
This nominal value was then adjusted to real 2017 values using the appropriate national GDP deflators for the chosen base year.Footnote 2
The real value in local currency was then converted to International $ (2017) using the relevant purchasing power parity exchange rate.
Non-market monetary valuation of NCP
Market data were generally not available for regulating and non-material NCP, and hence, evidence of their instrumental value was identified from scientific studies of the non-market, monetary values of these NCP. Three potential valuation databases were initially explored as potential sources of non-market monetary valuation data: the Web of Science (WoS) database of scientific publications, the Environmental Valuation Reference Inventory (EVRI) https://www.evri.ca/, and the TEEB value database http://www.teebweb.org/publication/tthe-economics-of-ecosystems-and-biodiversity-valuation-database-manual/. We concluded that the EVRI database was the most suitable for the review, since it comprised data that were up to date and in a format that could readily be inputted into our analyses. In contrast, the TEEB database only included data up to 2010, while the WoS would require a significant amount of effort to simply identify relevant studies.
To ensure scientific rigour and repeatability, we utilised a standardised, systematic search protocol to identify and then classify relevant value evidence from the EVRI database. The first step utilised the EVRI’s ‘Advance search’ function of ‘study areas’ to identify research articles that (1) were based in relevant European and Central Asia countries and (2) were published in English between Jan 2007 and May 2017. Restricting our search to include studies that were published within this period ensured that we only draw on contemporary values, as well as providing an update on the value evidence not included in the TEEB (2010) report. This step identified 496 valuation studies. However, not all of these studies had monetary values presented in an appropriate format suitable for inclusion in the IPBES ECA value review. The search results were thus further refined to only include studies that met the following criteria.
Articles that were based on primary studies.
Articles that had value data directly related to ECA countries.
Articles that had value data directly related to a regulating, material or non-material NCP.
Articles that had values expressed as a marginal change in the provision of NCP.
Articles where it was possible to express value evidence in terms of values/ha/year or values/person/year.
This refinement step reduced the number of articles for inclusion in the review to 238. These articles were then reviewed in detail to extract relevant information, including data on the values, the country, and the NCP. The 238 studies provided a total of 422 value points (i.e., individual value estimates). We then standardised these values to a common currency and base year (International $2017), as described in “Market-based monetary valuation of NCP”. Using SPSS, we then estimated median and mean values ‘per Ha per year’ and/or median and mean values ‘per person per year’ for the different NCP and across the four different ECA regions (Western Europe, Central Europe, Eastern Europe, and Central Asia).
Socio-cultural valuation of NCP
Socio-cultural valuation approaches were reviewed to elicit both relational and instrumental values of NCP. Evidence for this review included scientific studies that utilised socio-cultural valuation methods, as well as sources of indigenous and local knowledge (ILK).
For the evidence based on scientific knowledge, we conducted a comprehensive review of relevant literature from the Web of Science (WoS) database. The database was queried using a search string comprising three elements: (1) non-monetary valuation indicators (e.g., preference ranking and ratings, perceptions, and/or other non-economic values); (2) geographical range, including the countries of the four ECA sub-regions; and (3) ecosystem services and NCP terms (e.g., ecosystem service and ecosystem benefit) (see Supplementary Material A). The search was applied to the Abstract, Title, and Keywords of English language peer-reviewed scientific articles published between 2007 and 2017. The articles were then screened to ensure that they reported on empirical valuation exercises that elicit values of NCP using non-monetary indicators: articles that focused on conceptual or theoretical issues were excluded from our review. The final screening returned a set of 35 papers, published between 2009 and 2017, that included value evidence from the Western and Central Europe sub-regions: no articles fulfilled our selection criteria in East Europe or Central Asia. Supplementary Material B presents the complete list of papers included in the review. The low number of papers on socio-cultural valuation is consistent with other reviews that also demonstrate that this type of valuation is less applied than economic valuation in ecosystem services research (Christie et al. 2012; Liquete et al. 2013; Nieto-Romero et al. 2014; Luederitz et al. 2015; Martín-López et al. 2019).
A diverse range of socio-cultural valuation tools were used in the selected articles: i.e., interviews (e.g., Plieninger et al. 2013; Karrasch et al. 2014; Haida et al. 2015), questionnaires (e.g., Castro et al. 2011; Iniesta-Arandia et al. 2014) public participatory GIS (Brown et al. 2015), or role-playing games (Lamarque et al. 2014). This diversity meant that the values of NCP were elicited using both qualitative and/or quantitative indicators: this diversity made direct comparison of values difficult. In addition, these valuation tools often evaluated more than one NCP. For these studies, we recorded those NCP that were elicited amongst the five most valued by social actors in each case study to enable easier comparison with studies which focussed on one NCP.
To assess ILK values of NCP, we conducted content analysis of the UNESCO document that resulted from the Europe and Central Asia Dialogue Workshop in Paris (11th–13th January 2016), and the follow-up discussions with the selected ILK holders, ILK experts, and experts on ILK (Roue and Molnar 2017). Our analysis used the MAXQDA computer programme to analyse the narratives from herders, farmers, and foresters to provide a qualitative assessment of NCP values.
Further detail of the approaches used to collate evidence for the valuation of NCP in the ECA assessment can be found Martín-López et al. (2018).
Results: the value of NCP in Europe and Central Asia
The IPBES ECA assessment utilised a range of monetary and socio-cultural approaches to evidence instrumental and relational values of NCP in Europe and Central Asia. Below, we report the findings from this assessment. Where possible, we disaggregate the value evidence across four sub-regions of ECA as this was a key aim of the ECA assessment.
Market-based monetary valuation of NCP
Market-based monetary values were used to evidence the instrumental value of material NCP (Table 1). Net profits from agricultural production (across EU28 countries) range from $233/Ha/year (cereals) to $916/Ha/year (mix crop), while the annual gross value added from wood supply in forests was $255/Ha/year. We note here that these profit values per Ha are likely to be an over estimate of the value of these material NCP given that many agricultural products receive production grants.
Non-market monetary valuation of NCP
Non-market monetary valuations methods were used to evidence the instrumental values of material, regulating and non-material NCP. Of the 422 value points identified in search of the EVRI database: see Supplementary material 3 for a list of the valuation studies and their associated value data. 92.6% (N = 391) were from studies of Western Europe, 6.4% (N = 27) from Central Europe, 0.1% (N = 4) from Eastern Europe, and only one value point in Central Asia (Fig. 3). Thus, there are significant variations in data availability across the ECA region. The NCP with the greatest number of value points included: Habitat maintenance 20.8% (N = 88), physical and psychological experience 15.4% (N = 65), maintenance of options 13.7% (N = 58), and regulation of freshwater and coastal water quality 13.6% (N = 57).
Across all ECA countries, regulating NCP were generally the most highly valued by people for their non-market benefits (Table 2): regulation of organism detrimental to humans [median value = (2017 Int $150/person/year)], regulation of air quality (2017 Int $127/person/year), and regulation of hazardous and extreme events (2017 Int $112/person/year). Material and non-material NCP tended to have lower non-market values (ranging from Int $79/person/year for Maintenance of options down to Int $14/person/year for physical and psychological experience); the exception being material and assistance (2017 Int $171/person/year).
Analysis also explored non-market values on a per Ha basis (Table 2); although less data were available on these. Again, the highest values were found for regulating NCP: regulation of freshwater and coastal water quality (2017 Int $1965/Ha/year) and habitat creation and maintenance (2017 Int $765/Ha/year). Non-material NCP, such as Physical and psychological experiences were also highly valued (2017 Int $1117/Ha/year).
Above, we report the median values for NCP (Table 2). However, we note that there was a wide range in the non-market values, which reflects differences in both the scope and scale of the NCP evaluated. We, therefore, advise caution with respect to directly transferring the reported values to other policy contexts.
Socio-cultural valuation of NCP
Scientific studies reporting instrumental and relational values of NCP in Western Europe and Central Europe show that non-material NCP were considered the most important by people. Fifty-one per cent of the research papers found non-material NCP among the five most valued by people in socio-cultural terms, while regulating NCP were found in 31% and material NCP in 18% of papers. Physical and psychological experiences were found among the five most valued NCP in 80% of papers (N = 28), whereas Supporting identities was found in 63% of papers (N = 22). Food and feed, a material NCP, is also highly valued in socio-cultural terms (Fig. 4), being found among the five most important NCP in 46% of papers (N = 16). Among regulating NCP, Habitat maintenance and Regulation of freshwater quantity and quality were found to be the most important in socio-cultural terms: both NCP were found among the five most valued NCP in 31% of the papers (N = 11, respectively) (Fig. 4).
Content analysis of the narratives from selected ILK holders showed that nature is mostly valued through its contributions to non-material NCP, particularly Learning and inspiration, Physical and psychological experiences and Supporting identities (Table 3). Quotes from this analysis also show that ILK holders emphasized the importance of non-material NCP through their relational values that contribute to desirable relationships with nature. For example, ILK holders stated the relevance of their attachment to a particular place (which is considered part of the NCP of Supporting identities) for realizing the NCP of learning and the physical experience of recreation:
‘We have the knowledge, how the land looks like, where the reindeer go. Now that I’ve been in this land for so long, it’s much easier for me to manage reindeer in this area, compared to someone else who has never been here.’ (Reindeer herder)
The narratives of ILK holders also illustrated that the NCP of Supporting identities can be relevant for people in terms of the satisfaction derived from knowing that a particular landscape or species exists and in terms of the opportunities provided by nature to develop a sense of place, belonging, connectedness or sacredness (Table 3). In all of these cases, ILK holders elicited relational values:
‘This is like home, you can’t tell it. It has to be felt’ (Herder)
‘I lived in a farmstead since I was a kid, livestock and nature for me are one and the same.’ (Herder)
Narratives of ILK holders also showed the importance of material NCP, particularly in terms of Food and feed and Materials and assistance (Table 3), highlighting their instrumental values. Yet, the narratives also showed that these material NCP were relevant for the ILK holders because their resilience and diversity of options:
‘[Arboreal lichen] is a fantastic food for reindeer under catastrophic grazing conditions. There is no such feedstuff to buy with money. Even for money I don’t think we would accept that they cut a forest full of arboreal lichen. There is no forage to place on level with arboreal lichen.’ (Reindeer herder)
Furthermore, ILK holders highlighted the value of many regulating NCP, such as Habitat maintenance, Regulation of freshwater, Formation of soils, Regulation of hazards, and Regulation of organisms detrimental to humans through the removal of animal carcasses (Table 3). Most of the regulating NCP were valued because of their instrumental and relational values (Table 3). For example, the NCP of Regulation of organisms detrimental to humans was valued by ILK holders because of its instrumental value (i.e., the scavenging benefit), but it also encompassed relational values expressed in spiritual terms: ‘Even beasts are made by God and have a purpose, even the bad ones like wolves, they have their own role, they eat the corpses of dead animals, and they cleanse the landscape.’ (Herder).
What evidence exists on the instrumental and relational values of values of NCP in Europe and Central Asia?
The first objective of this paper was to assess evidence on different types of values of NCP in Europe and Central Asia. Data for this analysis was drawn from searches of the scientific literature, along with analyses of ILK dialogue.
Consistent with the previous global assessments (Costanza et al. 1997; TEEB 2010; de Groot et al. 2012; Costanza et al. 2014), our analysis identified significant evidence of the instrumental values of ecosystem services/NCP. These instrumental values were identified through both market (“Market-based monetary valuation of NCP”) and non-market (“Non-market monetary valuation of NCP”) monetary techniques, and to a lesser extent through socio-cultural methods (“Socio-cultural valuation of NCP”). The prominence of monetary values largely reflects the fact that monetary methods have been extensively used in the region to value ecosystem services/NCP in instrumental terms. It is thus important to stress that monetary valuation of NCP still remains core to the IPBES framework (IPBES 2018c).
In contrast, we only found limited evidence of relational values. These relational values were elicited using socio-cultural methods and through examination of evidence from ILK communities (“Socio-cultural valuation of NCP”). The limited amount of evidence of relational values partly reflects the fact that relational values are a relatively new concept (see Chan et al. 2016); but it can also reflect the fact that relational values, such as sense of identity, belonging and spirituality were relegated to marginal positions in ecosystem services valuation (Daniel et al. 2012; Chan et al. 2012).
The findings from our searches highlight some of the challenges facing large scale assessments of biodiversity and ecosystems when seeking evidence on NCP values. It was evident from these searches that within the ECA region, there is a significant concentration of evidence from Western Europe; with very little evidence available in Eastern Europe and Central Asia (Figs. 3, 4). Predominantly, this reflects the greater volume of research that is undertaken in Western Europe. However, we also recognise that our searches for evidence were largely restricted to articles published in the English language, and therefore, there may be evidence in other languages that were not picked up in our review. There is also variability in the amount of evidence available on the different NCP, with good volumes of evidence on Physical and psychological experiences and Regulation of freshwater and coastal water quality, but little evidence on Regulation of ocean acidification, Regulation of hazards and Regulation of detrimental organisms (Figs. 3, 4). It is also important to highlight that different search criteria were used to identify the different types of values and for different NCP. This was considered necessary to ensure relevant data was collected in an efficient manner.
Given the above, we argue that the ECA assessment does capture instrumental values of NCP across Europe and Central Asia; however, there still exist significant evidence gaps for certain NCP and for Eastern Europe and Central Asia. Looking wider afield across the other IPBES regional assessments (IPBES 2018a, b, d), it is clear that Western Europe (along with North America: IPBES 2018d) has relatively high levels of evidence, compared to the rest of the world. These observations further highlight potential issues relating to how the approach to searching for evidence may ‘privilege’ some sources of value evidence over other sources, such as ILK. The ECA (and the other IPBES regional assessments) thus highlights that while it may be desirable to be more inclusive of the diverse values of NCP, there are limitations to the availability of this evidence. Further research is thus required to fill these evidence gaps.
What additional insights into the value of NCP are gained through the inclusion of socio-cultural valuations and ILK?
Global assessments, such as TEEB (2010), have largely focused on the monetary valuation to assess instrumental values of ecosystem services/NCP. In recent years, the academic and policy communities have highlighted the need to consider a wider range of values, valuation and world views (Kenter et al. 2015; Costanza et al. 2017; Arias-Arevalo et al. 2018). In the IPBES ECA assessment, we address this demand by explicitly considering socio-cultural valuation methods and ILK systems (“Socio-cultural valuation of NCP”). Below, we discuss what additional insights that evidence from these methods bring to ecosystem assessments.
Through the analyses of socio-cultural methods and ILK narratives, our research identified evidence of different relational values, such as sense of place, identity, symbolic values and sacredness, recreational and aesthetic values and cognitive development (IPBES 2015; Arias-Arevalo et al. 2018), as well as instrumental values (Table 3). This result is consistent with Arias-Arévalo et al. (2017), who found that the analysis of narratives from urban and rural people in the Otún River watershed (Colombia) provided evidence about the multiple relational values (e.g., health, altruism towards others, aesthetic values or cultural heritage) and instrumental values of NCP.
The consideration of ILK has also led to the consideration of NCP not normally addressed in ecosystem assessments. For example, in the ILK dialogues in Europe and Central Asia, the herders highlighted the role of wolves for carrion removal (Regulation of organisms detrimental to humans), as well as the role of guard dogs to protect livestock from wolves (Material and assistance) (Table 3). These two NCP are not recognised in the list of services found in other assessments such as the Millennium Ecosystem Assessment (2005), TEEB (2010), and the Common International Classifications of Ecosystem Services (https://cices.eu/). The inclusion of these two NCP in the IPBES framework enhances previous classifications of ecosystem services by helping to give a ‘voice’ to the ILK holders such as farmers and herders (Morales-Reyes et al. 2018a, b).
The consideration of socio-cultural methods and ILK in the valuation of NCP may also uncover wider conceptualisations of values including shared social values such as deliberated and other-regarding values (in the sense of Kenter et al. 2015). For example, the importance of the NCP of carrion removal emphasized by herders is expressed as a collective and often refers to its importance for other herders and farmers (other-regarding). Previous research has also found that the relevance of other-regarding values of NCP can be elicited through socio-cultural valuation methods. For example, Oteros-Rozas et al. (2014) found differences between self-regarding and other-regarding altruistic values of ecosystem services provided by transhumance practice.
Evidence from socio-cultural methods and ILK knowledge systems also help to support the move by IPBES to replace supporting, provisioning, regulating and cultural services (Millennium Ecosystem Assessment 2005; TEEB 2010) to a more fluid framing of material, regulating and non-material NCP (IPBES 2018c). Within IPBES, this change symbolises the recognition that NCP do not necessarily fit into discrete categories, but rather there may be some grading across NCP categories (as illustrated in Fig. 2). For example, evidence from the ECA assessment suggest that some non-material recreational activities (such as hunting, fishing and angling, mushroom gathering, berry, and fruit picking) can also be considered as material (wild food) NCP (García-Nieto et al. 2013). In addition, gathering wild edible plants was also highly connected with other non-material NCP, such as Learning and Supporting identities through enhancing sense of belonging [e.g., (Pieroni et al. 2002, 2014; Pardo De Santayana et al. 2005, 2007)]. These examples illustrate how the IPBES framework and the use of socio-cultural methods and ILK can provide the required flexibility and evidence to take account of how different societies value NCP.
Based on the above evidence, we argue that the inclusion of socio-cultural methods and ILK within the IPBES ECA assessment provides a more holistic evidence base than the previous ecosystem services frameworks such as TEEB (2010). This conclusion is also supported in the Americas (IPBES 2018d) and Africa (IPBES 2018a) IPBES regional assessments. These reports note that economic approaches to valuing ecosystem services (which were developed, and, therefore, more suited, to valuing ecosystem services in western societies: Christie et al. 2012) are often inappropriate for valuing NCP in some global south countries. Indeed, global south governments were strong advocates for including socio-cultural methods and ILK to assess “nature’s gifts” as a distinct component of NCP (Díaz-Reviriego et al. 2019).
Given that the inclusion of socio-cultural methods and ILK can lead to a wider range of values being considered within ecosystem assessments, the next question then is how to best integrate these diverse values into policy decisions. Unfortunately, the ECA assessment does not provide concrete proposals on how this might best be achieved (IPBES 2018c). Instead, the ECA assessment highlights various on-going challenges for value integration, including: incommensurable values (i.e., values that cannot be reduced to a common measure); how to weight or trade-off values based on different methodological or epistemological assumptions; how to aggregate diverse values; and how to incorporate a range of value indicators into policy decisions. Furthermore, Löfmarck and Lidskog (2017) also note that IPBES avoids contested and conflict-laden issues, including ontological disagreements on what counts as valid knowledge when working across knowledge systems. Although IPBES does not explicitly address these challenges, we make the following qualified observations. First, although some values may not be readily combined into a common indicator (i.e., are incommensurable), they may still be compatible. For example, narratives from stakeholders could be presented along with economic values to provide a suite of value evidence for, or against, a particular policy option. Second, value integration may need to be considered as a social process that involves conflict resolutions strategies. For example, Cerreta and Panaro (2017) advocate the use of multi-stakeholder spatial decision analysis, while Kenter et al. (2016) demonstrates how deliberative valuation may be used to capture a wide range of values and then discuss how these values may be better embedded in decision-making processes. Kronenberg and Andersson (2019) further demonstrate that even if full value integration is not possible, parallel use of different valuation methods produces a more comprehensive picture that using any method alone.
Drawing on the findings highlighted in this paper and others published in this special issue of Sustainability Science, we conclude, as have other researchers cited below, that to address fully the diversity of values future IPBES and other international assessments will need to more explicitly consider gradients in terms of: the type of representation sought from political to statistical (Raymond et al. 2014); the scale of the provider from the individual to that of a culture or community (van Riper et al. 2018); the scale of application of value from the neighbourhood to the global scale (Ives et al. 2018); and the temporal stability of values from stable or minimal change (Manfredo et al. 2017) through to high change (Ives and Fischer 2017). Capturing evidence of NCP values across all these gradients is likely to be challenging and is perhaps a practical limitation of multiple evidence base approaches (Tengö et al. 2014) to valuation in ecosystem assessments. Furthermore, as our example of IPBES ECA assessment suggests, it is often difficult to effectively integrate the different evidence sources. Further research is thus required to explore approaches to the holistic and transparent identification, selection, and integration of multiple values for inclusion in assessments of NCP. Tengö et al. (2014) provide some useful observations for how IPBES-type assessments could better integrate the multiple evidence sources of NCP values.
The IPBES conceptual framework was developed as part of an Intergovernmental Science-Policy Platform to generate scientifically robust information to improve the evidence base for better decision-making to protect and enhance the World’s biodiversity and associated NCP. To address this evidence need, IPBES developed a conceptual framework that centred around the concept of Nature’s contributions to people (NCP); where NCP embraces both ecosystem services and Nature’s gifts. The adoption of the term and conceptual framing of NCP provides a clear statement that IPBES is aiming to extend the ecosystem services concept by accounting for a wider range of values, valuation methods and value providers. As the findings presented in this paper suggest, the NCP paradigm by focusing on instrumental and relational values treats values more holistically than the previous assessments such as the MEA (2005) and TEEB (2010). For example, by giving a ‘voice’ to ILK holders, we demonstrated new types of NCP such as carrion removal, along with evidence of relational values including sense of place, identity, symbolic values and sacredness. However, the IPBES conceptual framework is not without controversy. In particular, the introduction of the term ‘nature’s contribution to people’ (NCP) has been subject to much debate (Braat 2018; de Groot et al. 2018; Kenter 2018; Peterson et al. 2018). In this paper, we do not enter into arguments as to which terminology (NCP or ecosystem services) is best; but rather focus on demonstrating the additional insights that the inclusion of socio-cultural methods and ILK knowledge within assessments can bring in terms of uncovering the diversity of values. Furthermore, we also recognise that much of the research on ecosystem services was already considering socio-cultural valuations (see Supplementary Material B) and that socio-cultural valuation is increasingly used in ecosystem service research (e.g., Martín-López et al. 2019). What is novel about IPBES, is that it is the first international level assessment that explicitly accounts for the diversity of values and valuation methods, as well as providing a ‘voice’ to a wider range of stakeholders particularly ILK holders.
The IPBES ECA assessment was adopted by 130 countries during the IPBES Plenary held in Medellin, Columbia in March 2018. The IPBES conceptual framework has been applied to three other regional assessments (the Americas, African and Asia and Pacific assessments) (IPBES 2018a, b, d), the global assessment (IPBES 2019), and the assessments on Pollinators, pollination and food production (IPBES 2016a), Scenarios and models of biodiversity and ecosystem services (IPBES 2016b), and Land degradation (IPBES 2018f). Although these assessments have made significant advancements is ecosystem service assessments, IPBES also acknowledges that there are still knowledge gaps and uncertainty in its conceptual framework, particularly in terms of how to best integrate the diversity of values into policy decisions. To address these limitations, IPBES is currently undertaking a ‘Methodological assessment regarding the diverse conceptualization of multiple values of nature and its benefits, including biodiversity and ecosystem services’ (https://www.ipbes.net/deliverables/3d-values). The objectives of this Values Assessment are to assess: (a) the diverse conceptualization of values of nature and its benefits; (b) the diverse valuation methodologies and approaches; (c) the different approaches that acknowledge, bridge and integrate the diverse values and valuation methodologies for policy and decision-making support; and (d) knowledge and data gaps and uncertainties (IPBES 2018e). This assessment is due to report in 2021.
Purchasing power parity (PPP) exchange rates reflect differences in the cost of living between countries, i.e. it is the exchange rate necessary to allow the purchase of an identical basket of goods in different countries. Data for standardisation of values to ‘International $’ were based on the World Bank’s World Development Indicators (WDI) dataset: http://databank.worldbank.org/data/views/variableSelection/selectvariables.aspx?source=world-development-indicators.
GDP deflators are used to take account of the effect of inflation over time. However, inflation rates differ between countries. This fact provides the rationale for converting values into local currency units before applying a deflator.
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This manuscript has benefited from the discussions with Sandra Díaz and Marie Stenseke in Medellín (Colombia) during the 6th IPBES Plenary, and we are also grateful for the comments from Chris Raymond and anonymous referees. Finally, we would also like to thank all the other authors of Chapter 2 of the IPBES ECA (2018c) report, including the two co-chairs of the ECA assessment (Rounsevell, M and Fischer, M), the IPBES Secretariat (Rando, AT-M, and Mader, A), the Lead authors (Başak Dessane, E., Berry, P., Chenu, C., Gerino, M., Keune, H., Osipova, E., Oteros-Rozas, E., Paillard, S., Rossberg, A. G., Schröter, M. and van Oudenhoven, A. P. E.), and Contributing authors (Karabulut AA, Çokçalışkan BA, Bilgin A, Breeze T, Bukvareva E, Duez P, Faith DP, Geijzendorffer I, Gosal A, Haider LJ, Kretsch C, Lozano J, Meire P, Meyer M, Moleón M, Morales-Reyes Z, Oosterbroek B, Potts SG, Povilaityte-Petri V, Ruiz Almeida A, Sánchez-Zapata JA, Sievers-Glotzbach S, Sorokin A, Sousa Pinto I, Stange E and Osipova E.).
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Handled by Christopher M. Raymond, Helsinki Institute of Sustainability Science, University of Helsinki, Finland.
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Christie, M., Martín-López, B., Church, A. et al. Understanding the diversity of values of “Nature’s contributions to people”: insights from the IPBES Assessment of Europe and Central Asia. Sustain Sci 14, 1267–1282 (2019). https://doi.org/10.1007/s11625-019-00716-6
- Nature’s contribution to people
- Ecosystem services