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Highlights • We explore spatial links between 9 ecosystem services (ES) in a tropical region of high forest cover. • Both positive (n = 20) and negative (n = 12) spatial associations were found. • Agricultural lands and forests had the highest total ES output. • Forest ES provision varied nonlinearly with distance to the forest edge. • The approach provides a broad perspective at low cost of ES provision over a vast tropical region. Abstract Ecosystem service (ES) assessments have flourished globally in recent years and are now frequently used by policymakers and environmental managers. However, data scarce regions continue to be less well studied, limiting the comprehensiveness of the approach and its potential benefits. Here we aim to assess multiple ES and their spatial relationships in a region with high tropical forest cover, the state of Amapá, in the Brazilian Amazon. We develop a simple method to measure nine ES, identify spatial associations between them, and explore the impact of land use change on the capacity of forests to provide those services. The ES analysed include biodiversity, regional climate regulation, indigenous heritage, agricultural production, and NTFP extraction. Both negative (n = 20) and positive (n = 12) spatial associations are found, with agricultural land and forests having the highest total ES provision. We also show that this varies nonlinearly with distance to forest edges. In the face of currently unavoidable data scarcities in high biodiversity tropical areas, we show that this approach can provide useful evidence for land use management decisions. [ABSTRACT FROM AUTHOR]

The use of Ecosystem Services (ES) indicators can help designing, implementing and monitoring public environmental policies. Such indicators may be used as a support tool for natural resources management, like in forest areas, which are important ES providers. In this context, military areas are particularly challenging due to the nature of the activities conducted and the need to conciliate them with ecological protection, without undermining military readiness. It is argued that in addition to technical issues, considering stakeholders’ opinions is beneficial for the selection and design of ES indicators. The main aim of this research is to develop forest ES indicators supported by a participatory indicator selection process. A case study is made of an Atlantic Forest area in the Northeast of Brazil, under the jurisdiction of the Brazilian Army. To accomplish that aim, a questionnaire survey was sent to a group of stakeholders in order to evaluate an initial set of proposed 44 indicators for several forest ES. Through a weighting of stakeholders’ scores, 25 ES indicators for the Atlantic forest were obtained. The selected indicators portray the study area mainly as a provider of regulating, cultural and habitat services and less of provisioning services, which can be related with military and nature protection restrictions on the use of provisioning ES. Nevertheless, the three top-rated indicators dealt with water availability, regulation and quality (for human consumption). Together with the predominance of water-related ES that was observed (ten out of 25 indicators), this points out the relevance of forest water-related ES in the study area. On the other hand, the specificity of the military context was not clearly reflected by the indicators selected, since most of them are applicable in areas or contexts other than a military one. Alongside indicators expressing the benefits provided by nature, stakeholders’ scorings reveal recognition of the importance of biodiversity and resilience of the area. This stresses the importance of biodiversity and resilience to support ES supply, but is also linked with one of the major challenges for managing a military area with high natural value: that of conciliating military activities (that support military readiness) with nature protection. Other forest areas under military or similar particular jurisdiction, often representing a major fraction of national forests, could learn from this approach and identify areas for priority response measures. These indicators could be also a driver to increase and improve environmental management of military training activities and safeguarding natural resources in important ES providing areas like Atlantic forests. [ABSTRACT FROM AUTHOR]