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.

当地绵羊品种（LSB）和动物遗传资源的丧失总体上威胁着当代和子孙后代的营养和生计安全。市场力量和新的生产模式是导致LSB的总经济价值（TEV）（即使用价值和非使用价值的总和）被低估并因此被高收益进口产品替代的主要因素。本研究的目的是使用生态系统服务 (ES) 框架估算卡拉里蒂科羊 (KaS) 的 TEV。为此，进行了一项选择实验，分析了阿提卡地区居民对源自 KaS 传统牧场生产系统 (PP) 的最重要 ES 的社会偏好。我们的结果表明重要的使用和非使用价值与 KaS PP 相关。本研究的结果呼吁建立激励机制，改革后的农业环境政策可以与新的营销策略协同作用，有助于 KaS 及其传统 PP 的增值和保护。