Ecosystem Services Framework Research Articles

Synergistic effects of urban forest on urban heat island-air pollution-carbon stock in mega-urban agglomeration

Urban forests provide multiple ecosystem services from mitigation of urban heat island and air pollution to multi-dimensional human well-beings. However, extensive studies focus on the singular contribution of urban forests to cooling, clean air and increase carbon sequestration. This study combined multi-source data and geostatistical methods to quantify the spatiotemporal effects of urban forests on the spatial interactions between surface urban heat island (SUHI), PM2.5, and carbon stock (i.e., synergistic effects) and its mechanisms in the mega-urban agglomeration of Guangdong–Hong Kong–Macao Greater Bay Area. Results showed that urban forest evolution was spatiotemporally coupled with the patterns of PM2.5, SUHI, and carbon stock in 2000–2020. 80 % of the urban forest landscape indices demonstrated significant positive effects on cooling–clean air–increase carbon sequestration, with much higher (on average 2.98 times) influence than for each single environmental variable. In addition, patch dominance explained an average of 60.55 % of the synergistic effects, and its control zone rapidly expanded spatially by 54.3 %. In contrast, the influence of cover rate diminished, with q value and control zone proportion decreasing by 18.87 % and 26.61 %. Moreover, the contributions of anthropogenic factors to synergistic effects were 1.2–3.8 times higher than the natural factors. This study established an urban ecosystem service framework, thereby providing crucial information and decision support for effective urban forest management.

Integrating basic human values with forest ecosystem services: pathways to sustainable forest management.

The article explores the intricate relationship between basic human values and forest ecosystem services (FES). The study highlights the critical role that forests play in providing essential services for biodiversity, forest products, climate stabilization and human well-being, and emphasizes the need to understand and integrate human values into forest management and planning. Through a novel approach, this study explores how the concept of "forest" can elicit considerations of fundamental human values that diverge from conventional classifications and measurements of forest values. The study uses a comprehensive methodology, including surveys and content analysis, to uncover the hierarchical structure of human values associated with forests. This approach enables the identification of fundamental values that remain constant despite situational variations. The main results reveal a hierarchical structure of values, with Apollonian values being more prevalent than Dionysian ones. The study shows significant differences in the importance attributed to different FES, reflecting underlying value differences between residents. The study makes a novel contribution by systematically examining the links between human values and FES and proposing a profound and sustainable approach to forest management that takes into account the psychological dimensions of human-forest interactions. The study suggests that recognizing and incorporating the intrinsic human values into forest ecosystem service frameworks can improve sustainable forest management practices and ultimately foster a deeper connection between people and the forest environment.

Quantification and mapping of regulating ecosystem services in canola agroecosystems (case study: Gorgan County, Iran).

Regulating services are the advantages that humans receive from regulating ecosystem processes. These services include, but are not limited to pollination, climate regulation, water purification, carbon sequestration, and erosion control. Quantifying and mapping ecosystem services in agroecosystems is one of the main effective actions to increase pay attention to these services and adopt suitable approaches to direct sustainability. The purpose of the study was quantification, and mapping of regulating ecosystem services in canola agroecosystems of Gorgan County, north of Iran. For this purpose, some regulating services such as carbon sequestration, climate regulation, soil microbial respiration, soil aggregate stability, and pollination by insects were evaluated based on the Common International Classification of Ecosystem Services framework. The information and data required for each of these services were collected through field measurements, laboratory experiments, and field surveys. After quantifying, the surveyed services in canola agroecosystems were presented on geospatial maps generated by ArcGIS software, version 10.3. Results showed that agroecosystems in the west and north of the studied region provided the more regulating services. Also, the results of the pollination showed that pollinating insects belonged to four orders and 13 families. The majority of the pollinators were Hymenoptera (44.74%), especially honey bees (Apis mellifera L.), Diptera (5.26%), Butterflies (Lepidoptera; 25%), and the beetles (Coleoptera; 25%), and Anthophora sp. and Andrena sp. were the second and the third most abundant pollinating species after honey bees. Generally, the canola agroecosystems close to the rivers and the natural ecosystems provided more services than other regions.

Trade‐Offs and Optimization of Ecosystem Services in the Plain Terminal Lake Basin: A Case Study of Xinjiang

ABSTRACTInfluenced by climate change and human activities, plain terminal lake basins (PTLB) in arid regions experience significant shrinkage, resulting in a decline in ecosystem services (ESs) such as windbreak and sand fixation (SF) and habitat quality (HQ). However, systematic assessments of these services in such basins are limited. A key research challenge is to define and enhance the contribution of plain terminal lakes within the ESs framework of their respective basins. Therefore, this study focused on the Ebinur Lake Basin (ELB), Manas River Basin (MRB), and Tarim River Basin (TRB) in Xinjiang. We adopted both the InVEST and RWEQ models to assess ESs in these regions, by employing the production possibility frontier (PPF) to optimize various ESs, including carbon storage (CS), water yield (WY), HQ, and SF. The results indicated a general upward trend in ESs across these key basins, with a particularly significant increase in the CS. Spatial analysis revealed that regions with improved ESs were mainly concentrated in the mountainous and oasis areas of the basins, with the most pronounced improvement observed in the TRB. Within these basins, the interactions between the different ESs mainly exhibited synergistic relationships. However, notable concave trade‐off relationships existed between WY and CS, WY and HQ, and HQ and SF, particularly in the TRB. This was largely attributed to increased trade‐offs between WY and other ESs, resulting from the widespread agricultural expansion in the TRB. We plotted the optimal Pareto efficiency curves for ESs across the three basins to obtain the corresponding optimization results, and made recommendations for the enhancement of ESs. In summary, this study lays a solid scientific foundation for establishing ecological protection boundaries and promoting high‐quality sustainable development in the PTLB of arid areas.

A cost-benefit analysis of ecosystem services from restoring degraded soils to forest ecosystems in the Sahel

Techniques of degraded ecosystems restoration in the Sahel have largely contributed to slowing down desertification process. However, they are often very costly, requiring important manpower and financial resources. The economic benefits of such cases of land restoration are under-documented, especially in scientific literature. The aim of this study is to estimate the ecosystem benefits (market and non-market, direct and indirect) associated with changes in biodiversity induced by forest and landscape restoration (FLR) interventions in the Sahel, and to compare them with the costs of these interventions. Data has been compiled using individual and group surveys, floristic inventory, and existing literature. Ecosystem services framework has been used to structure the analysis. Financial and economic cost-benefit analysis have been compiled, based on the historical case of the managed Gourga forest (Ouahigouya, North Burkina Faso), to estimate whether FLR brings benefits greater than it costs. The results show that restoration of the site is profitable over the first ten years thanks to farming activities, becoming unprofitable in years 11–45 after farming is completely stopped. This study opens up new prospects for improved design of FLR in the Sahel.

Ecological Function Zoning Framework for Small Watershed Ecosystem Services Based on Multivariate Analysis from a Scale Perspective

A thorough comprehension of distribution features of ecosystem services (ESs) and the influencing mechanisms can offer scientific guidance for the ecosystem management of small watersheds. We analyzed the spatial distribution patterns, interrelationships, and service hotspots of ESs across pixel and administrative scales using a multi-level statistical analysis approach in the Ashi River Basin. Through the quantitative calculation of the InVEST model, the findings revealed a decrease in soil retention, water yield, total nitrogen and phosphorus export, carbon storage, and habitat quality, while an increase in food production was observed during the period from 1995 to 2015. Through the geographical detector, the spatial heterogeneity of most individual ESs was influenced by land use patterns. Through redundancy analysis, terrain factors had the highest contribution rate to the integral ESs. Socio-economic factors and climate factors also drove the ESs’ amount and spatial distribution. At the pixel scale and administrative scale, there were distinctions in the correlations between all ESs, reflected by the fact that the relationships between ESs at the administrative scale were generally weaker and no more significant than at the pixel scale. Based on the number and distribution of hotspots in ESs and the clustering results of influencing factors, the framework of ecosystem zoning was constructed. This basin was divided into three ecological zones, and the management policies were formulated according to the ecological environment. This study clarifies the internal and mutual connection between ESs and influencing factors across two scales, thus contributing to the advancement of management strategies for ecological conservation and socio-economic development within the context of small watersheds.

Impact of Urban Green Spaces on Air Quality in Bangkok

Purpose: The aim of the study was to investigate the impact of urban green spaces on air quality in Bangkok. Methodology: This study adopted a desk methodology. A desk study research design is commonly known as secondary data collection. This is basically collecting data from existing resources preferably because of its low cost advantage as compared to a field research. Our current study looked into already published studies and reports as the data was easily accessed through online journals and libraries. Findings: Urban green spaces in Bangkok have been found to significantly reduce air pollutant levels such as nitrogen dioxide (NO2) and particulate matter (PM10 and PM2.5). These green areas mitigate the urban heat island effect and improve overall environmental quality by promoting carbon sequestration and providing natural cooling effects. Integrating green space planning into urban development strategies is crucial for sustaining these benefits and enhancing public health in Bangkok. Unique Contribution to Theory, Practice and Policy: Biophilia hypothesis, ecosystem services framework & urban heat island mitigation theory may be used to anchor future studies on the impact of urban green spaces on air quality in Bangkok. Municipalities should prioritize the strategic placement and maintenance of green infrastructure, considering factors like proximity to sources of pollution and population density. Policies should also prioritize community engagement and education on the benefits of urban green spaces for air quality and public health.

Evaluation of Green Infrastructure Benefits in Urban Areas in Paris

Purpose: The aim of the study was to investigate the evaluation of green infrastructure benefits in urban areas in Paris. Methodology: This study adopted a desk methodology. A desk study research design is commonly known as secondary data collection. This is basically collecting data from existing resources preferably because of its low cost advantage as compared to a field research. Our current study looked into already published studies and reports as the data was easily accessed through online journals and libraries. Findings: An evaluation of green infrastructure benefits in urban Paris found that parks and street trees effectively mitigate urban heat island effects and improve air quality by reducing pollutants such as nitrogen dioxide and particulate matter. Recommendations emphasize integrating green infrastructure into urban planning to sustain these benefits and promote environmental resilience, highlighting its critical role in enhancing urban livability and sustainability in Paris. Unique Contribution to Theory, Practice and Policy: Ecosystem services framework, social-ecological Systems (SES) theory & urban political ecology (UPE may be used to anchor future studies on the evaluation of green infrastructure benefits in urban areas in Paris. Foster interdisciplinary collaboration between urban planners, landscape architects, environmental scientists, and social researchers to enhance the design, implementation, and management of green infrastructure projects. Advocate for policy frameworks that integrate green infrastructure into urban planning and development strategies at local, regional, and national levels. This includes incentivizing green infrastructure adoption through financial incentives, tax breaks, and regulatory support.

Using a socially-engaged arts approach to exploring how diverse socio-cultural groups accessed, valued, engaged with and benefited from an urban treescape during the COVID-19 Pandemic

This paper presents a socially-engaged arts approach to exploring the variety and specificity of cultural benefits urban park-users associated with its treescape during the COVID-19 pandemic. Drawing on the cultural ecosystem services framework, cultural benefits are understood in terms of positive impacts to ‘experiences’ (our relational interactions with the environment), ‘capabilities’ (our knowledge and abilities in relation to environmental interaction) and ‘identities’ (our perceptions of our relationship with the environment). The research captured evidence of a broad range of people’s interactions with the human and non-human world, whilst opening up an inclusive space for respondents to reflect on and share feelings about the significance of these experiences. The methods employed attracted a range of ‘quieter voices’ to participate, particularly more vulnerable park-users. They also attended to the multiple levels at which people connected with treescapes during this time, from less conscious material engagements to more emotionally and culturally driven transactions. This case study research highlights the important role of the park’s treescape in supporting people to feel better during the COVID-19 crisis and their cultural associations and ties to it. However, it also explores feelings of concern for and perceived lack of influence over this valued resource as potentially disbenefiting wellbeing. It identifies experiences of environmental anxiety, emerging from a lack of certainty over and agency within urban green spaces and treescapes and the benefits they can provide. It concludes that management of treescapes and greenspaces should be sensitive to impacts on environmental emotion.

Re-visit project success: evaluation of visitor perspectives in the Sungai Melaka flood mitigation project

Purpose This interdisciplinary study re-evaluates the Sungai Melaka flood mitigation project’s impact on community success in Malaysia’s UNESCO World Heritage site, broadening the definition of success considering historical and cultural significance. This study aims to revisit success metrics, focusing on the project’s influence on people’s interactions, cultural well-being, social cohesion and heritage preservation. Design/methodology/approach This study explored visitors’ reviews of their experience visiting Sungai Melaka in several data collection stages. The first data collection involved a Web survey posted on Facebook to capture diverse perspectives of the population and grasp the core strand of knowledge to focus on the second data collection, the questionnaire. The final stage involved interviews to generate rich qualitative data. Findings The findings of this study revealed that the impact exceeded tangible outcomes, as the project impacted people’s interactions and practices. This research assesses cultural benefits, incorporating these indicators into evaluating cultural ecosystem services by capturing local visitors’ and communities’ perceptions, preferences and behaviours. The findings found that other project success attributes include identities, capabilities and experience, further defining learning, health, economics, connection to nature and symbolism. Originality/value This research explores the meaning of project success beyond the traditional metrics by capturing success from the users’ perspectives and people’s interaction and their impact on culture and well-being. The cultural ecosystem services framework used in this study is applied to explore the interactions between people and the facility and its effect on the people.

Integrating fuzzy analytic hierarchy process into ecosystem service-based spatial planning: A case study of the Shenyang metropolitan area, China

Incorporating ecosystem services (ESs) into spatial planning is crucial for effective environmental management and achieving sustainable development goals. While the Analytic Hierarchy Process (AHP) is a commonly employed method for multicriteria analysis of ESs, it has faced criticism for its limited ability to handle inherent imprecision and uncertainties. Consequently, we proposed an assessment framework for ESs using the Fuzzy Analytic Hierarchy Process (FAHP) and implemented it in the Shenyang Metropolitan Area (SMA), a key political and economic center in Northeast China. We quantified eight types of ESs (water yield, food supply, water regulation, carbon storage, waste regulation, soil retention, habitat quality, and outdoor recreation) within SMA. The FAHP was utilized to determine the weights of these ESs. Subsequently, we presented a normalized index to identify priority conservation and development areas. Our results indicated that the primary areas for conservation were mainly located in the southwest and east of Benxi City, the southeast of Fushun City, and the southeast of Anshan City, whereas areas for development were primarily in the northwest of Shenyang City. Through comparing various ES integration methods, our study underscores the effectiveness of FAHP in ES evaluation. The research also highlights the challenge of managing uncertainties in ES-based policy-making and emphasizes the necessity for resilient and comprehensive planning approaches.

Matching supply and demand of cooling service provided by urban green and blue space

Urban blue-green space (UBGS) has been extensively investigated for its climate regulation capability in the context of climate change. However, current efforts are limited toward the cooling effects mismatch in supply and demand of UBGS. This study adapts the framework of ecosystem supply and demand to quantify the supply-demand matching of the cooling effects of UBGS. Two indices were proposed to evaluate cooling provision and demand of UBGS: Cooling Supply Index (CSI), accounting for cooling contribution and spatial effect, and Cooling Demand Index (CDI), considering physical and social dimensions of cooling demand. Four-quadrant analysis and bivariate local indicators of spatial autocorrelation (BiLISA) analysis were employed to distinguish the supply-demand matching status: high supply with high demand, low supply with high demand, low supply with low demand, and high supply with low demand. The results show that 1) CSI and CDI yield great performance in quantifying cooling supply and demand, respectively; 2) the four-quadrant analysis and bivariate LISA analysis are complementary to each other, and can target those areas in different matching statuses for climate-sensitive planning and design; and 3) particular attention should be given to areas characterized by low supply with high demand. This study marks a crucial step toward integrating social aspects into the analysis of cooling effects provided by UBGS. It enriches the analysis framework for urban ecosystem services and provides valuable guidance for landscape planning to mitigate heat stress.

Integrating ecosystem service supply–demand and ecological risk assessment for urban planning: A case study in Beijing, China

The balance between ecosystem service supply–demand and landscape ecological risk are two crucial aspects influencing the sustainable development of regional ecosystems. Current evaluations ignore these aspects and lead to partial landscape planning in urban areas. As a result, a framework was built for regional planning in urban areas based on multidimensional evaluations of ecosystems for high-efficiency land use planning. First, to determine the ecosystem service balance in regional scale, the supply and demand of five ecosystem services were quantified—biodiversity conservation, carbon sequestration, water conservation, food production, and landscape recreation. Second, landscape ecological risks were identified using the “natural–social–landscape” research framework combined with spatial principal component analysis. Third, spatial clustering analysis of ecosystem service supply–demand ratios and landscape ecological risks was then performed through spatial autocorrelation, which aimed to identify areas for protection and restoration priority. Finally, GeoDetector was used to determine the main factors influencing ecosystem service balance and landscape ecological risks and develop targeted planning measures. The results revealed an imbalance in total ecosystem service supply–demand in Beijing's plain area, coupled with a high level of landscape ecological risk. The combined ecosystem service supply–demand ratios exhibited a significant negative correlation and aggregation with landscape ecological risk, and the significant area accounted for approximately 31.9% of the total area. Priority areas for protection and restoration accounted for 10.39% and 19.94%, respectively, of the total regional area. Land use, distance to settlements, and vegetation cover were the primary environmental variables influencing the distributions of the combined ecosystem service supply–demand ratios and landscape ecological risk. So, this study emphasizes the need to strengthen intensive land use and prevent the uncontrolled expansion of urban land and settlements. It is crucial to enhance urban green infrastructure construction, promote the development of biodiversity-friendly agriculture, and implement measures such as afforestation restoration to increase regional vegetation cover. Overall, by integrating a framework of ecosystem services and landscape ecological risk, a comprehensive scientific reference can be provided for the efficient land use and sustainable development planning in urban areas.

Terrestrial carbon dynamics and economic valuation of ecosystem service for land use management in the Mediterranean region

Land use change is a significant cause of land degradation, resulting in the removal of carbon and its transfer to the hydrosphere or atmosphere, which can have a detrimental impact on essential ecosystem functions and services. In contrast, rural landscapes offer both ecological and economic benefits to people due to their carbon storage properties. This benefit is often evaluated within the framework of Ecosystem Services (ES). The rural landscapes offer unique structures and ecosystem services. The aim of this study is to provide an economic quantification of carbon storage and sequestration in rural landscapes as an ecosystem service and to introduce carbon-based rural landscape management. The study enables the integration of carbon-based strategies and policies by generating quantitative outputs for landscape plans that have not yet been included in the spatial planning hierarchy. The Upper Seyhan Basin (USB), located on the Eastern Mediterranean coast of Turkiye, was modelled using spatiotemporal and economic valuation approaches to assess terrestrial carbon storage and sequestration in this context. The study modelled and mapped the four main terrestrial carbon storage components in the rural landscape: (i) above-ground biomass, (ii) below-ground biomass, (iii) Soil Organic Carbon (SOC), and (iv) dead organic matter carbon. The future land cover of 2055 was modelled using the Multilayer Perceptron (MLP)-Markov Chain (MC) algorithm based on the “Business-As-Usual” (BAU) scenario to determine future carbon sequestration. The Social Cost of Carbon (SCC) was estimated for Turkiye using the Regional Integrated Model of Climate and Economy (RICE) to economically model carbon services. In the final stage of the study, modelling outputs, including carbon storage pools/sinks, projected land cover dynamics, and SCC components, were used within the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model to map the carbon dynamics of the rural landscape at the regional level. This paper demonstrates the role of geospatial modelling and proposes a new planning and design logic that considers carbon-based inputs and global climate change in an appropriate format for land management by bridging the interface between earth sciences and spatial planning. The study results indicate that, the rural landscape in the study area provided an ecosystem service of 70,266 TgC carbon in 2014 with a storage value of USD 222,853,170. For the 2014–2025 projection, an estimated 1.042 TgC of carbon sequestration was valued at USD 6,234,137. The 2014–2055 projection estimated 3.185 TgC of carbon sequestration valued at USD 58,745,265.

Synthetic Biology and the Goals of Conservation

ABSTRACT The introduction of new genetic material into wild populations, using novel biotechnology, has the potential to fortify populations against existential threats, and, controversially, create wild genetically modified populations. The introduction of new genetic variation into populations, which will have an ongoing future in areas of conservation interest, complicates long-held values in conservation science and park management. I discuss and problematize, in light of genetic intervention, what I consider the three core goals of conservation science: biodiversity, ecosystem services, and wilderness. This uneasy relationship, however, does not forgo the use of such interventions. I argue there is a case for the application of this technology within some interpretations of the moral frameworks of wilderness and biodiversity, despite apparent conflict between these values and the technology, and the possibility that this technology's use displays some limitations of the ecosystem services framework. Ultimately, the advent of biotechnology assisted restoration highlights the need for us to reevaluate our ethical concepts of conservation at times of global environmental and technological change.

How valuable are the ecosystem services of local animal breeds? The case of Kalaritiko sheep in Greece

The loss of local sheep breeds (LSB) and Animal Genetic Resources in general threatens the nutrition and livelihood security of the present and future generations. Market forces and new production patterns are the main factors that have led to the underestimation of the Total Economic Value (TEV) (i.e. the aggregated use and non-use values) of LSB and, consequently, to their substitution by high-yielding imported ones. The objective of this study is to estimate the TEV of the Kalaritiko sheep (KaS) using the Ecosystem Services (ES) framework. For this purpose, a choice experiment was implemented analyzing the societal preferences of Attica Region dwellers regarding the most important ES stemming from the traditional, pasture-based production system (PPs) of KaS. Our results show that important use and non-use values are relevant to KaS PPs. The findings of this study call for the establishment of an incentive mechanism, where reformed agri-environmental policies can work synergistically with new marketing strategies, contributing to the valorization and protection of KaS and so its traditional PPs.

A new index integrating forestry and ecology models for quantitatively characterizing forest carbon sequestration potential ability in a subtropical region

Due to the important role of forests in carbon neutrality, it is a big task in accurately calculating and predicting forest carbon storage and carbon sink capacity in recent years. However, considering the factors on the capacity of forest carbon sequestration, ecologists and foresters consider different models to evaluate the forest carbon sink ability at different scales, with foresters focusing more on forest growth models, while ecologists adding more climate and environmental factors, which may result in inconsistent results in carbon storage. Therefore, constructing an integrated model by combining the forestry and ecology models is essential for accurately quantifying and characterizing the forest carbon sink potential at the regional scale. Here, we proposed a new forest carbon sink potential index (FCSPI), which is defined as fractional deficiency of the current forest carbon to its maximum level, based on forest permanent plots, climate, and edaphic data to evaluate the forest sink potential ability from stand level to zonal scale across the northern subtropical zone in Hubei province, China, which coupled the stand growth model and climate-productivity model. The results at stand level showed that the R2 and RMSE of FCSPI were 0.78 and 0.072 respectively, which indicated that the FCSPI is an intuitive, highly practical, straightforward, easy, and rapid to implement methodology for forest carbon sequestration assessment. Moreover, FCSPI can conveniently extended from stand scale to zonal scale based on the site quality index for carbon sink (SIC) and stand age variables, which were derived from the opened climate, edaphic, and topographic data. The results of wall-to-wall FCSPI across the subtropical forest in Hubei province reveal the current and future carbon potential sequestration, which can help managers to focus on forest management for climate-smart actions and planning in forest ecosystem services framework.

Towards sustainable management of Lake Singkarak, Indonesia: System analysis and research priorities

The water use conflicts characterize the inefficiency of the lakes as common pool resources (CPR); therefore, consensus-based collaborative management is one of the best alternative solutions. Tropical lakes supporting multipurpose uses such as clean water sources and fisheries for rural people have diverse and unique characteristics which complicate their management. We engaged the Ecosystem-Based Management-Drivers Pressures States Ecosystem Services Responses (EBM-DPSER) framework to analyze the complex system of Lake Singkarak, Indonesia as a study case. The framework is also used to interlink the system with the Ecosystem Services Framework. This link is crucial to conduct economic valuation of the alternate management responses. We classified several management issues based on the perspectives of local stakeholders and researchers. We highlight our findings, that there are significant discrepancies among the focus and perception of local stakeholders and researchers. The differences result in inefficiency of research fund allocation. Current research activities are focused on biophysical aspects, which have different emphasize with stakeholders’ concerns. Therefore, they do not directly answer decision makers’ questions. The constructed framework aids to align these discrepancies by listing prioritized future research to aid solving the disputes and to promote evidence-based decision making in the lake. We expect that the use of the framework can aid the development of scientific-based consensus management and aid future monitoring and evaluation of various management responses.

The role of salmon aquaculture eco-certification in corporate social responsibility and the delivery of ecosystem services and disservices

Aquaculture eco-certification is especially relevant in salmon farming where it has emerged as a popular corporate social responsibility (CSR) strategy, providing global standards that can be applied to a globally traded commodity. However, eco-certification is just one of many CSR strategies used to address seafood sustainability at the corporate level. CSR is important for company image, but it is not clear whether or how these strategies contribute to sustainability outcomes. This paper applies an ecosystem services framework to an analysis of sustainability reporting from top salmon farming companies to identify links between eco-certification, other CSR strategies, and the delivery of ecosystem services. Although eco-certification was used to indicate commitment to sustainability practices across all companies, other CSR strategies, especially practices, power, and partnership, were more frequently and explicitly connected to the delivery of ecosystem services. Results show that individual CSR strategies including eco-certification are not isolated but interact and work in concert to manage the supply of ecosystem services.

Economic valuation of ecosystem services trade-offs of tilapia cage culture farm and native capture fisheries in Lake Maninjau, Indonesia

Research on the effects of cage aquaculture on native fish populations has revealed its negative and positive impacts. However, a separate analysis of its ecological and economic effects creates incomplete information for the decision-makers. Moreover, the inadequacy of time series data has caused challenges to knowledge-based decision-making in establishing new cage aquaculture sites, especially in low-middle income countries. We use the ecosystem services (ES) framework to analyse the synergy and trade-off of cage aquaculture to a native fish species, Gobiopterus sp. in Lake Maninjau, Indonesia, as an effort to provide comprehensive information to support local decision-makers and to fill the information gap. We engaged some modelling techniques such as the Maximum Entropy Model (MaxEnt) validated with field survey data, Bayesian Networks (BN), and Monte Carlo Simulation (MCS) in this research. The results show that cage aquaculture provides habitat services for the species and temporary forgone fish production due to the accelerated sulfur upwelling. The economic value of habitat provision reached 74,500 IDR per year per cage or 1,128 million IDR per year in 2017. Further, the average value of the forgone benefit of fish production in the current cage aquaculture business extends from more than 550 million IDR per year in the dry season to almost 600 million IDR per year in the rainy season. The results indicate that the negative impacts of cage aquaculture on the native fish population outweigh its benefit. The recommendation for management actions includes applying alternative aquaculture techniques and other technological interventions.