Do You Have 5 Minutes To Spare ? – The Challenges Of Stakeholder Processes In Ecosystem Services Studies

Operationalization of the ecosystem services (ES) concept for improved natural resource management and decision support cannot, thus far, be rated as satisfactory. Participation of stakeholders is still a major methodical and conceptual challenge for implementing ES. Therefore, we conducted an online survey and a literature analysis to identify benefits and challenges of the application of ES in participatory processes. The results show that the purpose of stakeholder engagement is very diverse as a result of varying objectives, spatial scales and institutional levels of analysis. The complexity, terminology and (lacking) coherent classification of ES are pivotal aspects that should be accounted for in the design of studies to improve stakeholder participation. Although limitations of time and financial resources are bigger challenges than ES related ones, tailoring communication strategies and information for different stakeholder groups are of major importance for the success of ES studies. Results support the view that the potential benefits of applying ES, e.g., consensus finding, and development of integrated solutions, cannot be realized consistently across the different spatial scales and decision-making levels. Focusing on stakeholder processes represents a means to increase the relevance, reliability and impact of study results and to move participation in ES research from theory to reality.


Introduction
I n the last decade the concept of ecosystem services (ES) (e.g., de Groot et al. 2010;Haines-Young and Potschin 2010;MEA 2005) has gained increasing attention and recognition in environmental sciences.In line with recent mainstreaming activities integrating the ES concept into policy making (in Europe, e.g., Convention on Biological Diversity, 2012 EU Commissions Blueprint to safeguard the future of European Waters by 2015, EU Common Agricultural Policy) (Maes et al. 2012), the concept has been increasingly tested as a framework for an integrated environmental impact assessment to be applied in natural resource management, landscape planning, land use policy, and biodiversity conservation (e.g., Cowling et al. 2008;Fürst et al. 2011Fürst et al. , 2012Fürst et al. , 2013b;;Grêt-Regamey et al. 2008;Termorshuizen and Opdam 2009;von Haaren and Albert 2011).Thus, after a phase where much conceptual work has been carried out (e.g., de Groot et al. 2010;Haines-Young and Potschin 2010;Kandziora et al. 2013;MEA 2005;TEEB 2010) and several methodological approaches on quantifying, modeling and mapping ES have been published (e.g., Burkhard et al. 2012;Haines-Young et al. 2012;Hermann et al. 2014;Tallis and Polasky 2009;Villa et al. 2009), the next step is application of the ES concept in practice, i.e. implementation of procedures for ES assessment into regional and local processes in planning and management (van der Meulen et al. 2012).
As ES put into focus the needs of humans and the benefits they obtain from ecosystems, it is a stakeholder-driven concept.Thus, participation is an integral part of ES research (Menzel and Teng 2009;Müller et al. 2011).However, usually only scarce information on participatory processes is provided, which often renders the process itself nontransparent.There is a lack of practical experience described in scientific literature.Also difficulties, failures or mistakes are not mentioned or discussed.Besides, an overview and analysis of major challenges within participatory processes appear to be currently lacking in literature.
ES have been considered to be useful in communicating the benefits people obtain from ecosystems, to decide jointly on the best use and allocation of natural resources, and to facilitate deployment of a common discussion basis among different stakeholder groups (Grêt-Regamey et al. 2012;Wainger et al. 2010).However, there are drawbacks and obstacles that can impact its application and lead to discussions on the utility of the concept for decision-making in practice, for instance improvement of land management (e.g., Baker et al. 2013;Ghazoul 2007;Menzel and Teng 2009;Sagoff 2010;Wainger et al. 2010).
Participation in ES-based assessments -which is the focus of this paper -is also impacted by the ability to classify and quantify ES properly (Fisher et al. 2009).Other issues in group processes include stakeholder selection, the present personalities and the groups they represent, the questions asked and the form of communication.All have an impact on the resulting consensus (Malone et al. 2010;Mullen 1991).
Participation of (local) stakeholders is of major importance for the success in ES-based assessments, management and spatial planning (e.g., Chettri et al. 2007;Frank et al. 2012;Grêt-Regamey et al. 2012;König et al. 2010;Saxena et al. 2001;Sheppard and Meitner 2005;Turpie et al. 2008) and there are fundamental conceptual and operational issues still to be solved.Consequently, the proper inclusion of stakeholders has proven to be a challenge in many of the projects the authors of this contribution have been involved in.Therefore, stakeholders need much more attention in ES studies (Menzel and Teng, 2009).
The objective of this study is to investigate the challenges and the benefits of the application of ES in stakeholder participation processes in detail in order to derive general recommendations for improving participation in studies related to ES assessments in planning and management.In contrast to existing studies that investigated the challenges in integrating the ES concept in landscape or regional planning (e.g., Koschke et al., 2013;Albert et al. in press, we want to bridge the topic to stakeholder participation by revealing how scientists tackle the multiple demands related to stakeholder processes in the context of ES.

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The key questions to be addressed are: (1) Which are major challenges related to the ES concept in the practice of participatory processes?
(2) Does the ES concept indeed support better and more informed decision-making in stakeholder processes or are potential demerits and practical drawbacks actual hindrances to achieve this?
(3) Are there scale-dependent differences in terms of ES related challenges and benefits?
(4) Can general recommendations be derived on how to deal with challenges, potential demerits and practical drawbacks?

Development of an online-questionnaire
To get an overview on several important issues related to ES and participation, we first did a literature analysis and held discussions within the IALE-D working group "Ecosystem Services" (Figure 1).In order to collect data, we designed an online survey in which we questioned researchers about their practical experiences with stakeholder participation processes in their ES-based studies and projects.Since we aimed at investigating stakeholder processes from the perspective of scientists, we addressed only scientists who had conducted research related to ES including stakeholder participation.The survey was advertised in the newsletter of the Global Land Project (GLP, e-News No. 53; January 2013), the Ecosystem Services Partnership (ESP, Update No. 2013.1, January 2013), and the IALE-D/EU newsletter/mailing list.The questionnaire was also announced and linked to the two web-pages: http:// www.eli-web.com/and www.iale.de.19 researchers were invited individually by email subsequent to a science-direct search.
In order to capture the diversity of study approaches and to analyze in a coherent manner the participatory processes thereof, the first part of the questionnaire dealt with general questions about the frame conditions (e.g., location, adopted scales, study aim) of the projects/studies.The second part was dedicated to the stakeholder participation, such as the reasons for their involvement, the task(s) stakeholders were asked to do, and the ES terminologies and communication techniques that have been applied.The third part belonged to evaluation of the stakeholder process and was aimed at uncovering benefits and challenges in general, and was related to the ES approach (the whole questionnaire can be found in the Appendix).
The survey was hosted by www.soscisurvey.de.Most of the questions in the survey were multiple choice questions in order to facilitate their completion by participants.For some of the questions multiple answers were allowed.Answer categories were formed in discussions among the authors of this

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paper.There were also some open questions asking the interviewees to give free text answers.Subsequent to a pretest that was conducted with 12 participants, some flaws and some ambiguity were able to be eliminated before the survey was launched.The survey was online from January till June 2013.The survey results could be downloaded in *.csv format and were processed with Microsoft Excel to analyze the answers of the participants.
The results of the anonymous questionnaire are based on the answers of 38 interviewees mainly based in Europe (see results section).26 participants answered all questions, while 12 datasets originate from the pre-test, which included fewer questions.
Here, we provide only the most representative results with a focus on selected aspects.

Literature review
In addition to the questionnaire, a literature review was carried out.For the review of the studies a search on ISI Web of Knowledge was conducted to analyze peer-reviewed journal articles between the years 2000 to 2013 using the terms "ecosystem services", "stakeholder" and "participation" in their title, abstract, or keywords.The search results were examined for information on participation in ES studies.38 papers were relevant and could be used to discuss and reflect survey findings.We classified the information provided in papers according to answer categories of the survey if possible in order to be able to compare selected results.

General information of the online survey
We found very diverse goals and approaches of the analyzed studies.This documents the broad range and fragmented character of ES research.The relatively low number (n=38) of filled surveys was another reason that made analysis, i.e. structuring studies according to the addressed scale/decision-making level and comparing results, difficult.While the field the respondents were working in was not assessed, we could derive information on the institution they were working for in 21 cases (17 respondents answered the questionnaire anonymously).13 were employed at a university, five at an applied research institute, two in a consultancy firm, and one at a public authority/government institution.25 different countries were mentioned as study regions in the questionnaire.76% of the studies were located in Europe and especially in Germany (13 out of 37) as the country of origin of survey respondents.8% were situated in South America, 5% in both North America and Asia, and 3% in Africa and Australia respectively.Studies referred to by survey participants focused at a regional/landscape (74 %) or a local scale (14 %).Only two studies operated in a national or Pan-European area (3 %).
The ES concept was applied in projects thematically ranging from climate change, policies/decisionmaking, conservation and biodiversity protection to ecosystem and landscape management, energy crops and spatial planning.The distribution between scientifically-focused (46%) and application-oriented (41%) studies was almost balanced.39% of the studies were dedicated to spatial and conservation planning and 26% to the testing/development of assessment approaches.The most frequent reason for using the ES approach was the need for integrated solutions (35%).
The references for the theoretical background of the ecosystem services concept mostly mentioned for ES were MEA (2005), de Groot et al. (2002de Groot et al. ( , 2010)), Haines-Young and Potschin (2010) or TEEB (2010), Burkhard et al. (2012), andBoyd andBanzhaf (2007).Among the 16 respondents who applied other references with lists and definitions of ES or combined references, ten other references were mentioned: Staub et al. ( 2011), Bolund and Hunhammar (1999), Bryan et al. (2010), Beaumont et al. (2007), Bastian et al. (2012), Defra et al., (2011; the complete reference could not be identified), Link (2010), Rutgers et al. (2008), Ranganathan (2008), andFagerholm et al. (2012).Ten respondents (26%) used two or three and one even used seven different ES references.Five of the respondents explicitly stated that they tailored their approach by combining various references to better account for the aim of the study and to be more pragmatic in the use of ES with stakeholders (e.g., in case stakeholders were not experienced with ES).

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One respondent answered, "ES were identified by stakeholders themselves [and] no a priori typology was used".One respondent stated that "neither of these [references] were used directly, stakeholders modified them again to suit the purposes of the project and reflect the most up to date research on ES."

Findings related to stakeholder processes
The main purposes of stakeholder involvement were gathering of information and knowledge with 37% and 50% of all mentions in the survey and literature review respectively (Figure 2).
Asking the respondents "What type of information has been asked from stakeholders?", they stated that trade-off analyses (17 mentions), estimation of trends of supply ( 16), and the identification of relevant ES ( 14) were the most demanded information items from stakeholders.Less than every fifth study asked stakeholders for information on ecosystem service demands and only 13% of the studies asked for monetary valuation.Asked whether the information gathering was successful, 23% of respondents stated that it was not successful (i.e.unsatisfying or failed).For instance, reasons for unsuccessful trade-off analyses, which were mentioned in three of 17 cases, were problems "to discriminate between similar or related ES".This caused stakeholders to be reluctant or unable to weight ES against each other in trade-off analyses (Figure 3).Further, the estimation of trends on demand and supply, quantification of impact on ES, and monetary valuation were not successful in some cases.Titel...
The techniques broadly applied to address stakeholders have been workshops (32% of overall 73 mentions), questionnaires (23%), interviews (22%) and round tables (18%).In 42% of studies only one technique was used, whereas the rest of the studies used one or more technique.
We further asked whether the respondents did explicitly use ES terminology and definitions during work with stakeholders.The ES approach was explicitly explained and the ES terms were applied in 53 % of the studies.24 % of the respondents used the ES terms without any (extended) explanation of the ES concept (Figure 4, left).Among those who explained the ES concept and respective terms, almost all (90 %) were successful according to their own judgment.That is, the concept was mostly accepted and understood after explanation (see Table A1 for extended comments).This might be due to the fact that stakeholders were already familiar with the concept (as some of the respondents stated).However, understanding of the concept varied between stakeholder groups and educational level.To not additionally burden stakeholders with a new scientific concept, 24% did not provide an overview of the concept and used other terms.
Either information was translated from stakeholders to ES, or ES terms were translated to fit stakeholders' perceptions/educational background (see Table A2).
65% of the respondents did include a social scientist or a mediator to facilitate communication.From the 17 survey participants who included a mediator, eight stated that he/she could significantly enhance the stakeholder process.
The distribution across spatial scales was rather unbalanced.Most of the studies addressed the landscape/regional scale.At local scales, ES was less often fully explained and more often 'translated' (Figure 4,right).The ad-hoc applicability of ES and the motivation to fully, i.e, holistically apply the concept seems to decline with decreasing scale level.
There have been quite contrasting opinions on ES communication.As the complexity of the concept can discourage stakeholders and the process can become an "unsatisfactory experience", one respondent advocated ignoring the ES concept when dealing with (local) stakeholders.Another example provided evidence that the concept can be well understood and "quite intuitively" applied by stakeholders if a certain level of education and familiarity with concepts in general can be expected.One respondent mentioned that spatially available (statistical) data are not explicitly linked to ES and therefore it was challenging to apply the concept.Another respondent argued that the term 'landscape' (services) in comparison to 'ecosystem' (services) may be more attractive for stakeholders from non-ecological contexts or disciplines, and thus more suitable for being used in landscape planning projects (see also, e.g., Grunewald and Bastian 2010;Termorshuizen and Opdam 2009).

Evaluation of the added value and applicability of the ES concept in stakeholder processes
Taking into account the survey results and the literature review, the greatest cumulative benefit of applying ES appeared to be related to achieving more informed decisions, developing integrated solutions and taking a comprehensive perspective for impact assessments.Further, ES were advantageous for awareness-raising, improved consensus finding and increased commitment (Figure 5).Only one respondent from the survey did not see a benefit.
In the survey, almost 70% of the respondents agreed that ES actually allow finding more informed decisions and 60% stated that benefits depend on the targeted decision-making level, (not displayed).
80% see clear potentials for improving stakeholder processes using ES.General improvements proposed by respondents (and efforts of the ES community) should aim at enhancing general publicity, acceptance, and familiarity of the concept by continuing to apply and spread it through various dissemination channels and through education.Specific improvements refer mainly to simplification of the ES terms.Many respondents would also opt to improve and simplify explanations for stakeholders, including a better preparation of the communication.
Having more time available appears to be a major asset to deal with the challenges.Also methodical improvements concerning assessment, modeling, and visualization have been raised (see Table A3).

Challenges when using the ES concept in participatory processes
The most important ES related challenge for the survey respondents was dealing with the lack of data on ES (33% of all mentions).12% of all answers stressed problems with the relevancy of assessed ES for stakeholders, which might result again from lacking suitable data on ES supply (e.g., different or opposed relevance of ES in a case study area for stakeholders).A failed analysis of stakeholders needs or an overall "less tangible use" of the ES concept for stakeholders might have been other reasons for this outcome.Further, the integration of the approach into existing concepts was demanding (30%).It was challenging for respondents to create a common understanding and "communication basis between all participants", to deal with "different notions of what belongs to a service", and to "communicate the concept without creating confusion with respect to stakeholder's existing representations".
Challenges related to using ES identified in the survey were well supported by literature.Integration into existing concepts (30%), lack of data (20%), and lacking relevancy of the analyzed ES (10%) were found to be problems often mentioned in literature.The complexity of ES was found to be the most important challenge (40%) in the literature.In the respective multiple choice question in the survey, complexity was not offered as an answer (Figure 6).Overall challenges were also quite similar in both the survey and in the review.Quite commonly, time constraints and financial restrictions were mentioned.Problems related to the actual inclusion of stakeholders however, were dominant in the survey as well as in the reviewed publications (Figure 7).Survey results allowed a more detailed differentiation in terms of stakeholder related issues.Hence, the identification of (motivated) stakeholders (26%), the (balanced) composition of stakeholder groups (12%) and gathering of all relevant stakeholders (9%) were challenging aspects related to stakeholder processes.
In comparison, 71% of the respondents agreed that stakeholder processes are hampered more by general challenges such as limitations of time and money than by ES related ones (e.g., complexity, integration of ES into existing concept etc.).Only around 19% perceived ES related challenges as a bigger obstacle.
In terms of the ES concept, major reasons for poor motivation of stakeholders, which was found in 17% of studies, were again the complexity (32%), the lack of tradition (and thus the competition with existing concepts and regulations; 18%) and a lack of understanding of the added value of ES (14%).In the comments, it was obvious that researchers were often not able to explain clearly the benefits of assessments for stakeholders and the importance of ES.Time restrictions of stakeholders (31%), communication problems (26%), and lacking identification with project aims (14%) were additional threats to stakeholders' motivation and commitments and thus for a successful participatory process.Titel...

Challenges in participatory ES studies
Participation processes in ES studies are subjected to the main problems that have been identified in sociological literature on group processes (Jones and Stenseke 2011; Malone et al. 2010).Although the survey results suggest that general challenges, such as time constraints, lack of money and problems related to the (balanced) selection and involvement of stakeholders are more important, the use of the ES concept can pose additional threats to the success of stakeholder processes.This is due to its complexity, a lack of data, and terms unknown to stakeholders.For instance, Albert et al. (in press) reported that the ES concept was unknown by the majority of landscape and regional planners they questioned in their study.Further, the difficulty to integrate ES in accepted existing concepts and regulatory planning processes plays an important role (Albert et al. in press), as well as the inconsistent classification of ES.Merits and demerits of using ES might differ and depend on the specific decision-making context.Potential demerits of applying the ES concept in participation processes we found in our study were also often mentioned in ES literature (see Table 1).These demerits need to be considered since they can overcome merits.
Challenges related to the availability of data are not specific for ES studies of course, but the need to translate existing data to fit ES hampers the applicability of the concept.60% of the survey participants believe that the benefits of the ES approach depend on the targeted decision-making level.At overarching, strategic decision-making levels where respective stakeholders are included, the need to translate ES terms is less pronounced in comparison to regional/ landscape and local scales where stakeholders ask for very precise and spatially explicit information.Employing the ES approach in natural resource management, Wainger et al.
(2010: 1) said that "the devil, truly, is in the details" especially at local scales.
Table 1: Summary of potential merits and demerits of applying the ES concept in participatory processes in management and planning practice, based on ES literature.

Potential Merits (Benefits)
Potential Demerits (Drawbacks) ES allow integration of disciplines, interests and sectors, bridge natural sciences and human wellbeing and can thus serve as a common communication basis between stakeholder groups in order to develop integrated solutions (Seppelt et al. 2011, de Groot et al. 2010;Barbier 2007;Carpenter et al. 2006, Tallis et al. 2009, Grêt-Regamey et al. 2012, Van der Meulen et al. 2013).

ES can hinder communication instead of facilitating it, which can aggravate conflicts (Menzel and Teng 2009).
In the event there is no demand for ES, the concept might not serve as a useful management strategy (Grêt-Regamey et al. 2012).

ES explicitly involve beneficiaries, i.e. public demand for services (Grêt-Regamey et al. 2012).
Problems* come up when communicating the ES concept to the relevant actors (Meinke et al. 2006;Opdam et al. 2009, Koschke et al. 2012).ES help to make more-informed management decisions and realize synergies between ES (Hauck et al. 2013).
There is a lack of clarity and definition standards (Broekx et al. 2013;Fisher et al. 2009).ES provide a framework for a way of thinking that broadens the scope (Brauman et al. 2014) There is a lack of methods for assessment and monetization (de Groot et al. 2010;Kroll et al. 2012).

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This might explain that within the survey two studies at the local/ farm level did not communicate ES.Respondents might not have been able to identify an added-value from the use of ES in their case studies.These respondents did not explicitly explain the term 'ecosystem services' but used either 'environmental services' or only single 'services' as a specific topic, i.e. soil erosion protection.In these cases it was more difficult to explain to practitioners (e.g., farmers) the added-value of ES and the different terminologies.Integrating ES into existing planning and decision-making approaches, especially at the local level, appears to be too demanding and not easily accepted.This, however, may also be related to the fact that the reported cases were research projects carried out mostly at universities and applied research institutes which hence dealt more with developing concepts and methods.Application of the ES concept might have been less demanddriven in these cases and there might be a weak point in connecting ES to ongoing processes in the case study areas.
Although common references such as MEA (2005) and de Groot et al. (2002de Groot et al. ( , 2010) ) have been widely used, the range of other references clearly documents that there is no ecosystem services classification system that is totally consistent, can be commonly applied, and that there is a distinct need for refinements in practical applications.Some researchers working at the local scale tried to facilitate communication by not elaborating on ES.Experiences of survey participants have shown that, when discussing ES with expert stakeholders, one runs the risk of getting lost in definition and classification issues (e.g., which ones are final services, and which functions support which ES).These issues may make it more difficult for researchers to communicate with stakeholders.

Evaluating the impact of ES in stakeholder processes
Evaluating the applicability and the utility of ES, the concerned spatial scale and the related decisionmaking level are major drivers for the selection of stakeholders.Although based on a very low number of large scale cases, it seems that the ES concept is at the moment more easily understood or better suited to the stakeholders who work on a larger scale than at the local scale.This result is based on the decision of the researchers to not explain the ES concept or use alternative wording in the small scale cases.At higher levels, an adaption might be necessary in fewer cases, as the ES concept tends to be common to involved stakeholders (García-Llorente et al. 2011).
The survey and the literature review led to different results in terms of the role of ES to find more informed decisions.This benefit was mentioned in 10% of the answers from survey respondents while it was mentioned in 31% of the reviewed literature.In contrast, survey respondents put more focus on the ability to run comprehensive impact assessments (Figure 8, 24% of all mentions in comparison to 11% in the literature review).However, both answer categories are related, as they refer to the holistic, integrated character of ES.Asked if they agree or disagree with this statement, the majority of respondents stated that "ES support finding better (more informed) solutions" for landscape planning and management in practice.Yet, convincing examples could not be identified.It remains unclear whether the potential benefits of higher quality, better acceptance, and higher legitimacy in decisionmaking can be broadly realized in practice-oriented contexts.
Given the potential and perceived demerits, only 32% of the survey respondents evaluated the overall impact of ES on stakeholder processes as (rather) positive.Ambiguous findings were reported also from Albert et al. (in press) who asked regional and landscape planners about the usefulness of ES in planning processes.Interestingly, planners with no previous knowledge of ES believed it could be useful to integrate ES information in planning processes.Conversely, planners who already knew the ES concept had doubts and were rather pessimistic with respect to the benefits of integrating ES information.

How to handle challenges, potential demerits and practical drawbacks
Implementing participatory processes, the challenge starts with the selection of key stakeholders.A sound stakeholder analysis is the prerequisite for identifying values, interests, and needs of different and heterogeneous stakeholder groups (e.g., LANDSCAPE ONLINE 37:1-25 (2014) Titel... Grimble and Wellard 1997;Hein et al. 2006;Kasemir et al. 2003).The evaluation of the stakeholder process showed that a proper communication is of major importance.Although ES gained ground also in public discussion, many stakeholders might not quite understand what is meant by 'ecosystem' or relate it with natural processes and conservation instead of with human habitat and cultural patterns (Albert et al. 2012a).The advisable degree to which information on the conceptual background of ES needs to be conveyed to stakeholders varies.
The use (and extended communication) of the ES concept in the actual process might not always be necessary and advisable.Partly a certain reluctance of practitioners and (regional) planners to adopt the concept was reported by other scientists (e.g.Albert et al. in press).Some actors choose not to make the concept explicit when communicating with stakeholders, but merely mention specific services without labeling them ES, or by using other terms such as 'functions of the natural system' (Brauman et al. 2014;Everard 2009; van der Meulen and Brils 2011.)Thus, it is meaningful to adapt or translate the ES terminology and the amount of provided information to the needs of stakeholders in a way that the connections of the ES with stakeholders' well-being become more obvious and the information is useful and understandable for stakeholders with varying levels of expertise (cf.Granek et al. 2010;Nordström et al. 2010).Also technical support by interactive tools generally helps to trigger the interest of stakeholders for planning and can facilitate communication (Arciniegas et al. 2011;Berkers et al. 2006;Eikelboom et al. 2013;Frank et al. 2014).Some of the caveats such as the problem of perceiving ES as a green concept, the unfamiliarity with terms and their connotations (Albert et al. 2012a) might diminish with time as the concept will be better known, acknowledged, and understood as an overarching paradigm.Other challenges however will persist (e.g., inconsistency of the concept, classification problems, and unit of data in official accountings) and might continue to impact stakeholder processes negatively.
Since ES studies do often include spatial data treatment and collection and application of parti-cipatory methods from social sciences, sound expertise from both fields should be present within the research team (Hauck et al. 2013).It can be recommended to include a social scientist or a mediator to increase the likeliness of a successful process.

Conclusions
I n order to collect data on participation processes related to the application of the ES concept, we conducted an online questionnaire addressing researchers.In a subsequent step, a review of peerreviewed journal articles was carried out to increase the information basis and to compare with findings of the questionnaire.
Referring to the key question (1) ("What are the major challenges related to the ES concept in the practice of participatory processes?"),results of the online survey support the view that the ES concept poses additional challenges to stakeholder processes (see also chapter 4.1).Most of the survey participants stated that the concept was understood to a great extent, if properly explained.However, often the survey participants did not, or did not completely, explain ES.Hence, there are particular requirements for a proper and well-prepared communication of the ES concept (terminology, definitions) and for keeping up the motivation of the stakeholders (relevance of the information provided).Although there are a number of potential drawbacks directly related to the ES concept, general challenges such as limitations of time and money and stakeholder choice appear to be more relevant.Ambiguous results were found in terms of whether merits of applying ES outweighed demerits which has been addressed in key question (2).Although several drawbacks were pinpointed, the overall impact of applying the ES approach in stakeholder processes within scientific studies was predominantly evaluated as being positive.The commonly conveyed benefits of the ES approach as a common basis for discussion, for consensus building, for the identification of integrated solutions or more informed decisions, for example, could mostly be However, merits and demerits of using ES is also related to scale which was addressed in key question (3) ("Are there scale-dependent differences in terms of ES related challenges and benefits?").Survey participants generally agreed that benefits and challenges of applying the ES concept depend on the targeted scale/decision-making level.There were results (for example, the fact that researchers did not explain the concept in local cases) and comments from survey respondents (for example, in terms of acceptance/unfamiliarity of the concept, communicating the added-value) indicating that the application of the ES concept at local scales is more demanding with respect to stakeholder integration.However, sound confirmation could not be achieved due to the lack of data on the scale-dependent success of stakeholder processes.How exactly the study scale impacts the benefits of applying ES, is a question that should be further addressed by the research community.
As to key question (4) ("Can general recommendations be derived regarding how to deal with challenges, potential demerits and practical drawbacks?"):Participatory processes need to be closely related to demands by stakeholders concerning language, information types, and results that are produced.Thus, for a successful application in practice, it is definitely advisable to explicitly bring the ES concept to local context, to provide many examples and to focus on communicating the addedvalue of ES.It is safe advice to develop an individual communication strategy for each of the involved stakeholder groups with respect to the used terms and the amount of information provided on the ES concept (cf.UNEP-WCMC 2011).Communication of knowledge generated in assessments has to be adapted also to the decision-making level.Planning for larger scales allows more general information while the focus on smaller scale requires more detailed knowledge.If (cross-scale) stakeholder groups are involved, an important question is how to bridge knowledge gaps and different decision criteria between them.Still, stakeholders do not often talk the ES language and it is difficult to adapt research language to their needs.If it cannot be ensured that information is understood and perceived as relevant, it will be difficult to keep the process and results significant for stakeholders and ensure continued motivation and commitment.This problem may not always be coherently accounted for within studies.
One should be aware, that for changing awareness of ES, participatory processes (i.e.reasoning together, exchanging arguments) and actual study results are important.Thus, during assessments, the coherency and consistency of the ES framework might be of lesser significance, even more so if work is carried out at local scale.An important consensus of discussions within the group of authors was that ES might be well suited as a common conceptual/ theoretical and analytical framework rather than as a blueprint to conduct practice oriented projects and investigations.
A major concern of ES research is still to be able to provide 'actionable' knowledge, which is needed to overcome the apparent problem that the ES framework is a scientific concept rather than a concept that supports decision makers (Fürst et al., 2013;RR21, 2013).Dealing with stakeholders, we cannot present the ES approach as a new management approach in just one case study, but we do have to assess how the concept can support ongoing processes.Information allowing an evaluation of stakeholder processes appears to be largely missing currently in most studies/projects.Thus, the structured collection of stakeholder feedback on participatory processes should be a focal aspect in the future to better assess the success of ES studies.At times it seems that we need to take participation and the role and (information) needs of stakeholders more seriously instead of just "muddling through stakeholder processes" (Jennifer Hauck, personal communication, 07.05.2013), as it seems frequently to be the case in current ES projects.Together with efforts to develop standardized methods for ES assessment, we advocate a stronger focus on stakeholder processes as a key element for implementing ES into planning and management practice.This would help to develop new ideas for how to deal with particular challenges in ES, and it represents a means to increase the relevance and impact of study results in real life decision-making.The scientists were familiar with it If explained properly, the concept can definitely be made understandable.Some terms (e.g.biodiversity) are used differently in different contexts.I did not have major obstacles, but I worked with people who are fairly familiar with these terms.
[…] some concepts are difficult to understand for the community.
Stakeholders basically understood the approach but due to lacking time not every single detail could be clarified Definition was mostly accepted.
We had to clearly explain the concept, but afterwards it was in our experience quite intuitive for stakeholders.I have to state that all our stakeholders were quite well educated, e.g.forest engineers, city planners that have most probably been in contact with research and "concepts" in general.
The concept has been completely understood.

(Rather) No
Broad unfamiliarity of ES concept to many non-academic audiences.Researcher's attempt to 'reclassify' relationships that were implicit in local discourse connotations of monetary fungibility in 'services' terminology was particularly problematic within the study area.The 'services' terminology can be counter-productive because it seems to be associated with commodification.
ES is for most stakeholders quite difficult to understand.Farmers were the most easy, but only interested in production, government was more difficult at the time.
At the beginning it was difficult to communicate the complex concept in an understandable, easy way.Additionally, the term "ecosystem services" is complicated in German.

Table A2:
Reasons for not (fully) explaining the ES concept to stakeholders (question 15.2) […] it seemed to be too complicated We communicated the concept but embedded it in broader discussions about uses and values of different land-cover and land-use options To be sure that stakeholders understand the questions Communication with stakeholders is more easy, if other terms are used We did not want to ask too much of the stakeholders and did not want to discourage them […] to keep the process simple and to make it easier for the stakeholder to understand [the aim] To help general understanding by not-technical stakeholders […] we know from other experiences that the concept is very hard to understand, even by environmental experts and that it raises discussion about the definition.The specific ES are generally well understood by interviewees, with a few exceptions.
Communication with stakeholders was easier when the term ES was not mentioned, since in most times it was directly linked to monetary values.
The method applied for eliciting preferences and evaluating alternative solutions was multi-criteria decision analysis (MCDA) and within this framework terms like "values, goals, criteria, objectives, attributes" are commonly used.Communication with stakeholders was easier when the term ES was not mentioned, since in most times it was directly linked to monetary values.
The method applied for eliciting preferences and evaluating alternative solutions was multi-criteria decision analysis (MCDA) and within this framework terms like "values, goals, criteria, objectives, attributes" are commonly used.
Farmers are mostly not familiar with the ES-concept.Thus a term was used that has a stronger connection to environmental measures on farms, pretending that by implementing these measures real ES are provided.
Use of existing data and preprocessed spatial data of administrative authorities which are not explicitly linked to ES concept!It is not necessary to fully communicate the ES concept, to make it workable 'Landscapes' may be more attractive to non-ecological scientific disciplines in contrary to the term 'ecosystem' and may be associated with peoples local environment.The term landscape services might be more suitable for implementing the concept into landscape planning projects.In contrast, 'ecosystem' may be related with natural processes and conservation instead of with human habitat and cultural patterns.
Table A3: Selected statements on things that can be improved in stakeholder processes based on experiences of survey respondents (question 22) In this case: different groups of stakeholders need to be involved and more people needed for quantification Identifying ES in a common language for all stakeholders OR produce a two step process 1. identify a common language for environmental quality aspects and 2. produce a framework for translating environmental quality into ES.

Financial incentives might enhance participation in conservation measures
Include experts on financial aspects and decision makers/managers of support programs Better methods for WTP/ Choice Analysis Starting earlier, trying to keep explanations as easy as possible, more direct contact (if time allows) structure of workshops have to be well (and maybe strictly) organized, in order to be really productive Better preparation concerning the choice of participants, reduce choice to local people with scientific background to ensure a better understanding of the concept (question of feasibility!?) (1) Other ways to deal with supportive services, (2) learn how to deal with recognition, valuing and addressing beneficiaries for ES that are relevant at large scales, (3) use larger study area.
To facilitate the visualization of service provision (maps and diagrams are sometimes too abstract (too scientific) for stakeholders.It is very important to speak in 'their' language and to communicate them the benefits they will receive from the ES assessment

Figure 1 :
Figure 1: Overview of working steps

Figure 4 :
Figure 4: Overall comprehensiveness of communicating ES (left, 38 answers) and across the different scale levels (right, 37 answers).Number of considered answers in brackets

Figure 5 :
Figure 5: Benefits of using the ES approach in participatory processes as perceived by survey respondents (percentage of positive agreements, 79 answers) and based on mentions in literature (45 mentions)

Figure 6 :Figure 7 :
Figure 6: Challenges related to using the ES concept in participatory processes (survey: 67 mentions; literature review: 10 mentions) , DOI 10.3097/LO.201437ISSN 1865-1542 -www.landscape-online.deOfficial Journal of the International Association for Landscape Ecology -Regional Chapter Germany (IALE-D) Page 11 LANDSCAPE ONLINE 37:1-25 (2014), DOI 10.3097/LO.201437ISSN 1865-1542 -www.landscape-online.deOfficial Journal of the International Association for Landscape Ecology -Regional Chapter Germany (IALE-D) Farmers are mostly not familiar with the ES-concept.Thus a term was used that has a stronger connection to environmental measures on farms, pretending that by implementing these measures real ES are provided.Use of existing data and preprocessed spatial data of administrative authorities which are not explicitly linked to ES concept!It is not necessary to fully communicate the ES concept, to make it workable AppendixLANDSCAPE ONLINE 37:1-25 (2014), DOI 10.3097/LO.201437ISSN 1865-1542 -www.landscape-online.deOfficial Journal of the International Association for Landscape Ecology -Regional Chapter Germany (IALE-D) it raises discussion about the definition.The specific ES are generally well understood by interviewees, with a few exceptions.

[
Better] preparation of the questionnaire Provide more scientific background information to stakeholders and/or scientists, provide a specific challenge or problem to be tackled by the process More previous networking Adapt methodology better to situation and stakeholders [Address] issues of representativeness [better] Consider the difference in demand and tradition of participant Increase stakeholder involvement upstream of research design Explain in a better way the concept of ES Better explanation of the ES concept.Facilitate methods for ES weighting.Keep stakeholder contact as simple as possible.Provide only essential information.Focus more on social-science related communication techniques and methods.Try to make assessment (ES and indicators) more relevant to stakeholders.[More] time [is necessary] Involve other stakeholder groups, other methods to promote discussion for consensus between different stakeholders and other topics of consults (e.g.identification of ESs) Introduction through open-ended discussion of environmental/landscape benefits [to increase familiarity with the concept] LANDSCAPE ONLINE 37:1-25 (2014), DOI 10.3097/LO.201437ISSN 1865-1542 -www.landscape-online.deOfficial Journal of the International Association for Landscape Ecology -Regional Chapter Germany (IALE-D)

Table A1 :
Extended optional answers to the question whether the concept was accepted and understood by stakeholders (question 15.1 in the questionnaire)