Climate-related risks in Central and South America have received increased attention and concern in science and policy, but an up-to-date comprehensive review and synthesis of risks and adaptation potential is currently missing. For this paper we evaluated over 200 peer-reviewed articles and grey literature documents published since 2012. We found that climate change in Central and South America during the 21st century may increase the risk to severe levels for the following topical risk clusters: (a) Food insecurity; (b) Floods and landslides; (c) Water scarcity; (d) Epidemics of vector-borne diseases; (e) Amazon Forest biome shift; (f). Coral bleaching; (g) Coastal risks of sea level rise, storm surges and erosion; (h) Systemic failure due to cascading impacts of hazards and epidemics. Our synthesis also identified feasible adaptation measures for each risk. The impacts of the risks will be heterogeneous throughout the region, with rural communities, Indigenous peoples, Afro-Latin Americans, women, disabled people, and migrants identified as being the most severely affected. We refer to a number of adaptation options for each risk. However, unabated climate change together with low adaptive capacity will strictly limit adaptation options. Immediate strengthening of policies for building adaptive capacity and increase of research on the risk-adaptation nexus in Central and South America are paramount. Our findings might contribute to guide the adjustment and emphasis of adaptation policies and climate risk management strategies from local to national level.

Though Andean indigenous communities have a lengthy history of capable responding to water threats, anthropogenic climate change and soaring water demand have changed preterit water challenges into serious hazards. Using an ethnographic approach, this study examines how a Peruvian indigenous pastoralist community perceived and responded to climate-change induced water threats with the goal of understanding the mechanisms that enable such responses. Pastoralists report that alterations in water availability diminish the size and quality of wetlands and pastures, thus decreasing fodder for their livestock. Their primary adaptive responses are the creation of wetlands and the movement of livestock. A set of nested dynamic and flexible institutions enable households and supra-household units to carry out adaptive responses by facilitating access to alternate grazing areas and the labour force necessary to reshape the landscape. Institutions and local knowledge supporting the responses are open to exogenous information which generates opportunities for collaboration and innovation in the face of water hazards which in turn foments the resilience of indigenous pastoral social-ecological systems. This study reveals how indigenous knowledge and institutions contain strategies for adaptation to water stress that may be scaled up and replicated in national and sub-national programs.

Pastoral social-ecological systems worldwide are threatened by environmental, climatic, and socioeconomic changes. The magnitude of these threats and their impacts is higher in mountain social-ecological systems. This study analyzes how mountain pastoralists in Lotkuh Valley (Chitral, Pakistan) use their rangelands in changing social, environmental, and climatic contexts. Data were collected from a survey, focus groups, and observations through multistage stratified sampling and extensive fieldwork (2016–2019). The findings reveal that the strategy adopted by mountain pastoralists combines 7 different grazing mechanisms and stall feeding to use spatially segregated and seasonally productive rangeland resources in a sustainable manner. These seasonal mechanisms involve different types of livestock mobility, diverse fodder consumption, and grazing patterns. In winter, livestock are kept in stalls near the village. During spring, sheep and goats are taken to nearby low-lying pastures and meadows on a rotation basis. In summer, livestock and people move away from the village to settlements along a 3000 m elevational range to graze on the available pastures. Finally, in autumn, as the livestock descend, they browse intensively on stubble fields before the winter crops are planted. Furthermore, this strategy is based on the coordination of households' available labor force and pasture readiness. This study provides nuanced information on mountain pastoralists and rangeland management systems. The findings are useful for policymakers and practitioners in designing effective programs and policies to decrease the vulnerability and enhance the resilience of mountain social-ecological systems.

Enhanced anthropogenic climatic variability challenges small farmers. In the Sumapaz páramo (Colombia), higher irregularity in precipitation and temperature reduces the quality of pasture and cattle health. Data from surveys, semi-structured interviews, and focus groups were analyzed to understand livestock farmers’ responses to the impacts of climatic variability. To estimate the communities’ resilience in the páramo, we used the capitals framework, the Baseline Resilience Indicator for Communities (BRIC), and cluster analysis. The responses of most households aim to reduce the impacts of climatic variability on the production system, chiefly intensifying practices such as the rotation of paddocks, livelihood diversification, purchase of grass, and buying and selling livestock. Interestingly, farmers did not recognize the value of the types of capital for responding to climatic variability. Results showed that the use of available physical, social, and economic capitals render the farming system resilient. Our probit model estimated that economic and human capitals are the largest and most significant contributors to communities’ capacity to respond to climatic variability. However, pre-existing non-climatic vulnerabilities are also important. For example, poverty hinders farmers from using their income in response to climatic variability. The place-based measurements used in this research are easily understood and applicable by local policy makers to address increasing climate variability.