• Energy Research

Ecological footprint analyses demonstrate that the world’s more than 7.5 billion people consume multiple planets’ worth of resources. To incite and evaluate societal changes for the sustainable use of the environment and its natural resources, the ecosystem service (ES) concept was developed more than 20 years ago. To ensure the sustainable provision of indispensable ES, the concept has been refined and enhanced, enabling its application across various temporal and spatial scales. However, evidence-based strategies and policies are needed to preserve biodiversity and natural capital in our changing world. This Special Issue comprises studies advancing the frameworks, concepts, and applications related to ES assessment, with a particular focus on social–ecological systems. To broadly apply the ES concept in different social–ecological systems, several key issues emerged: (1) ES-related definitions and procedures should be improved and standardized; (2) the complexity of the interactions in a social–ecological system must be recognized, and knowledge about spatial and temporal dynamics and interactions among multiple ESs must be deepened; and (3) communication about ES, considering cultural and stakeholder differences, must be increased.

A key challenge in the sustainable management of freshwater is related to non-stationary processes and transboundary requirements. The assessment of freshwater is often hampered due to small-scale analyses, lacking data and with the focus on only its provision. Based on the ecosystem service (ES) concept, this study aims at quantitatively comparing potential water supply with the demand for freshwater in the European Alps and their surrounding lowlands. We propose an easy-to-use combination of different mapping approaches, including a large-scale hydrologic model to estimate water supply and the downscaling of regional data to the local scale to map demand. Our results demonstrate spatial mismatches between supply and demand and a high dependency of the densely populated lowlands from water providing mountain areas. Under expected climate variations and future demographic changes, our results suggest increasing pressures on freshwater in the south of the Alps. Hence, sustainable water management strategies need to assure the supply of freshwater under changing environmental conditions to meet the increasing water demand of urbanized areas in the lowlands. Moreover, national water management strategies need to be optimally concerted at the international level, as transboundary policies and frameworks can strengthen future water provision.

The growing pressure on society due to global change requires better integration of ecosystem services (ES) into decision-making. Despite a growing number of ES assessments, Europe-wide information on recent changes of multiple ES is still rare. This study aimed at analysing changes in ES values between 2000 and 2018 across Europe based on land use/land cover (LULC) distribution. We mapped 19 ES for 52 ecoregions and identified six major groups of ecoregions with similar LULC distribution and trends. Our results indicated that provisioning ES mainly increased in the forest-dominated region (G2), decreasing in the near-natural grassland region (G1), the region with agricultural mixed systems (G3), and the intensively-used steppic region (G6). Regulating ES slightly decreased in G1 and G6, but increased in G2 and the wetland-dominated region (G5). Cultural ES had generally low negative trends for most ecoregions. In addition, our results revealed ecoregions with differing trends in ES that could be related to specific socioeconomic developments. Our findings provide spatial and quantitative information that can be used for policy development at European national and regional levels—as well as for monitoring of ES.

Multifunctional landscapes optimise the benefits for stakeholders by providing multiple demanded ecosystem services (ESs) within the same area. Although previous studies have indicated human-induced trajectories of landscape pattern and ESs supply in the European Alps, relationships between these aspects and the implications for landscape multifunctionality are little studied. In this case study in the Austrian Alps, we revealed significant changes in landscape pattern, a significant decline in provisioning ESs and an increase in cultural and regulating ESs between 1860 and 2015. Overall, multifunctionality (i.e., the sum of ESs) decreased from 1860 to the middle of the twentieth century and increased afterwards. These changes in multifunctionality can be explained by climate- and human-induced changes in landscape composition, particularly by an increase in the diversity of land use/land cover (LULC) types and a decrease in glacier and unused grassland areas. Landscape composition has been altered by inhabitants as economic focus shifted from agriculture to tourism. Our findings improve the understanding of interlinkages between changes in socioeconomic characteristics, LULC, landscape patterns and multiple ESs. Moreover, we indicate the importance of low-intensity agricultural activities and landscape protection to enhance multifunctionality in tourism-oriented land use systems.

AbstractThis study analyzes the impact of droughts, compared with average climatic conditions, on the supporting ecosystem service water provision in sub‐watersheds in managed alpine grasslands in two climatically different regions of the Alps, Lautaret (French Alps) and Stubai (Austrian Alps). Soil moisture was modelled in the range of 0–0.3 m. At both sites, current patterns showed that the mean seasonal soil moisture was (1) near field capacity for grasslands with low management intensity and (2) below field capacity for grasslands with higher land‐use intensity. Soil moisture was significantly reduced by drought at both sites, with lower reductions at the drier Lautaret site. At the sub‐watershed scale, soil moisture spatial heterogeneity was reduced by drought. Under drought conditions, the evapotranspiration to precipitation ratios at Stubai was slightly higher than those at Lautaret, indicating a dominant ‘water spending’ strategy of plant communities. Regarding catchment water balance, deep seepage was reduced by drought at Stubai more strongly than at Lautaret. Hence, the observed ‘water spending’ strategy at Stubai might have negative consequences for downstream water users. Assessing the water provision service for alpine grasslands provided evidence that, under drought conditions, evapotranspiration was influenced not only by abiotic factors but also by the water‐use strategy of established vegetation. These results highlight the importance of ‘water‐use’ strategies in existing plant communities as predictors of the impacts of drought on water provision services and related ecosystem services at both the field and catchment scale. © 2015 The Authors. Ecohydrology published by John Wiley & Sons, Ltd.

Although anthropogenic activities affect the ecological conditions of mountain lakes worldwide, the impacts on human wellbeing, in terms of ecosystem services provided by lake ecosystems, remain unclear. This study identified potential impacts of anthropogenic pressures on seven key ecosystem services of small mountain lakes. The Driver-Pressure-State-Impact-Response framework enabled conceptualization of hypothetical impacts of multiple indicators used to quantify ecosystem services. Results indicate that increasing temperatures influence almost all ecosystem service indicators, impacting negatively water availability in particular, but also exerting positive effects on recreation. Changes in water use have mostly negative impacts, specifically on indicators related to habitat and aesthetics. For indicators such as trophic state, water clarity, water availability, riparian vegetation complexity, and nitrate content, up to six pressures may interact. Overall, the greatest impacts can be expected on the ecosystem services habitat, water, aesthetic and existence. To support targeted management strategies, two contrasting groups of mountain lakes were distinguished, accounting for socio-ecological differences related to recreational and agricultural use. Lakes of low suitability for human use (i.e., high and/or remote) are mostly affected by large-scale drivers such as climate change, whereas lakes of high suitability for human use (i.e., low and/or easily accessible) are more often affected by pressures exerted by changes in local water use. These findings suggest that future research should emphasize interdisciplinary assessments in bridging limnological parameters to ecosystem service indicators, to better connect the pressures of global change to human benefits derived from mountain lakes. This information is useful for mitigating or adapting to the impacts of change.

Increasing global pressure on natural resources requires that decision makers and land managers adopt sustainable solutions to ensure the long-term provision of essential ecosystem services (ES). Analysing the effects of land-use changes on ES can contribute to an improved understanding of the interactions between socio-economic development, landscape changes and ES, which is fundamental in order to avoid or mitigate the undesired consequences of today's decisions. Studies at longer timescales are still underrepresented, but are also fundamental for capturing slow social and ecological processes. This study therefore analysed the impacts of land-use/land cover (LULC) changes on ES values from the past to the future (1860-2100) in the Autonomous Province of South Tyrol (Italy). Future scenarios were based on socio-economic storylines and their spatial distribution mapped. By attributing ES values to LULC types, we assessed changes in ES values as well as their spatial patterns. Our results indicate that the abandonment of mountain grassland induced an ongoing shift in ES at higher elevations, from grassland-related ES towards forest-related ES. The intensification of use in the valley bottoms had predominantly negative effects on regulation & maintenance, and cultural ES in the past. Under future scenarios, changes in ES values at lower elevations greatly depend on expected socio-economic development. Negative effects on regulation & maintenance and cultural ES were highest for the 'Food sovereignty' scenario due to huge transformations of grassland and permanent cultures to arable land in order to optimise food provision at the regional level. In contrast, under the 'Liberalisation' and 'Rewilding' scenarios, there were positive trends for forest-related provisioning ES and less negative effects on regulation & maintenance and cultural ES within the study area, but the dependence on imported products increased. Our findings provide valuable information for decision-making and policy development in order to minimise negative consequences through targeted management measures or payments for environmental services.