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We examine the advantages and disadvantages of a methodological framework designed to analyze the poorly understood relationships between the ecosystem properties of large portions of land, and their capacities (stocks) to provide goods and services (flows). These capacities (stocks) are referred to as landscape functions. The core of our assessment is a set of expert-and literaturedriven binary links, expressing whether specific land uses or other environmental properties have a supportive or neutral role for given landscape functions. The binary links were applied to the environmental properties of 581 administrative units of Europe with widely differing environmental conditions and this resulted in a spatially explicit landscape function assessment. To check under what circumstances the binary links are able to replace complex interrelations, we compared the landscape function maps with independently generated continent-wide assessments (maps of ecosystem services or environmental parameters/ indicators). This rigorous testing revealed that for 9 out of 15 functions the straightforward binary links work satisfactorily and generate plausible geographical patterns. This conclusion holds primarily for production functions. The sensitivity of the nine landscape functions to changes in land use was assessed with four land use scenarios (IPCC SRES). It was found that most European regions maintain their capacity to provide the selected services under any of the four scenarios, although in some cases at other locations within the region. At the proposed continental scale, the selected input parameters are thus valid proxies which can be used to assess the mid-term potential of landscapes to provide goods and services.

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The ‘ecosystem service’ debate has taken on many features of a classic Kuhnian paradigm. It challenges conventional wisdoms about conservation and the value of nature, and is driven as much by political agendas as scientific ones. In this paper we review some current and emerging issues arising in relation to the analysis and assessment of ecosystem services, and in particular emphasize the need for physical geographers to find new ways of characterizing the structure and dynamics of service providing units. If robust and relevant valuations are to be made of the contribution that natural capital makes to human well-being, then we need a deeper understanding of the way in which the drivers of change impact on the marginal outputs of ecosystem services. A better understanding of the trade-offs that need to be considered when dealing with multifunctional ecosystems is also required. Future developments must include methods for describing and tracking the stocks and flows that characterize natural capital. This will support valuation of the benefits estimation of the level of reinvestment that society must make in this natural capital base if it is to be sustained. We argue that if the ecosystem service concept is to be used seriously as a framework for policy and management then the biophysical sciences generally, and physical geography in particular, must go beyond the uncritical ‘puzzle solving’ that characterizes recent work. A geographical perspective can provide important new, critical insights into the place-based approaches to ecosystem assessment that are now emerging.

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