Applying ecosystem services thinking to natural resource management and conservation decision making

Abstract

As global consumption increases, there is a growing emphasis on the production of food and the use of other resources necessary for life. Consequently, many ecosystems are stressed because their ability to produce market goods is favoured over other critical functions and services that ecosystems provide such as energy transfer, water regulation, nutrient filtering, and carbon sequestration. Capturing these benefits using ecosystem services thinking offers decision makers a methodology for considering the multiple benefits that ecosystems provide. However, gaps in our understanding of how we can make the ecosystem services concept operational remain.Recognising the relationship between natural capital stocks and the provision of ecosystem processes and services is a crucial step in operationalising ecosystem services thinking. I advance this concept by identifying that attributes of natural capital are not uniform in their amenability to change. Hence, the central tenet of this thesis is that management actions targeted at manageable attributes of natural capital stocks is effective for influencing provision of ecosystem services and benefits.I test how management practices influence natural capital stocks that contribute to the provision of required ecosystem services, using a 'provider group' approach. Provider groups are sets of species which exhibit attributes which contribute to ecosystem services and benefits. The traditionally farmed grassland system in the Southeastern Carpathians, Romania, is a good example of a multifunctional landscape providing provisioning, regulating, and cultural ecosystem services and thus a useful case study to test this approach. I assigned grassland plant species to provider groups (quality fodder, medical and aromatic compounds, honey, pollen, nitrogen fixation, and conservation concern) based on their characteristics and tested the impact of management practices (abandonment of hay meadows, grazing, and mowing) on species diversity and abundance within each group. Over three quarters (77%) of the 210 unique species sampled during this study contributed to at least one provider group and over a third (36%) contributed to more than one group. I found that different management practices favour certain provider groups over others, and thus supply of certain ecosystem services over others. A more nuanced understanding of the influence of management practices on natural capital stocks can better inform agricultural and conservation policies targeted at sustaining multifunctional landscapes.Incorporation of social data, particularly that describing human behaviour and decision making, is critical to embed the ecosystem services concept into natural resource management policy and Preface ii practice. Riparian management is a common policy option for mitigating the externalities of land use. A riparian management programme has been running in Taranaki Region, New Zealand for over 20 years providing a useful case study to elicit farmers perceptions and experiences of the pros ...