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Creators/Authors contains: "Salerno, Jonathan"

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  1. Free, publicly-accessible full text available July 31, 2026
  2. Abstract Conflict with humans, particularly over livestock predation, poses a severe and continuing threat to the conservation of large carnivores, particularly in reserve‐adjacent and unprotected areas. Such conflict also inflicts substantial costs on people living alongside large carnivores. Though conflict is complex, attacks upon livestock are one of the factors that drive immediate hostility toward carnivores, inflict economic damage upon livestock‐keepers, and can lead to retaliatory and preventative carnivore killing. Many conflict mitigation and livestock protection approaches exist, but it is crucial to examine their effectiveness. In this study, we evaluated the effectiveness of fortified livestock enclosures in reducing predation of livestock in an area surrounding Ruaha National Park in southern Tanzania. These fortified enclosures are built with chain‐link fences and are aimed to replace the traditional enclosures built with acacia thorn branches. We implemented a before‐after‐control‐impact (BACI) design to test the short‐term impacts of the fortified enclosure intervention. We then conducted a cost–benefit analysis (CBA) based on costs of construction of fortified enclosures and benefits accruing as prevented livestock depredation. Finally, we tested the hypothesis that fortified enclosures would diminish in effectiveness over time as carnivores become habituated, the fortification deteriorates due to lack of maintenance, and/or predation risk would increase. For the long‐term analysis, we used monthly data from 758 livestock‐keeping households from 2010 to 2016. Across both short‐ and long‐term analyses, fortified enclosures were effective at reducing the odds of experiencing predation of livestock by carnivores by 94% and 60%, respectively. Based on mean predation rates (c. 0.10 livestock month) and observed reductions, the benefit/cost ratios over 5 years of construction of a fortified enclosure with metal or wooden poles are 3.36 and 7.89, respectively, when subsidized. Our study contributes actionable evidence on the impact of an intervention to inform conservation strategies supporting human–carnivore coexistence. 
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    Free, publicly-accessible full text available February 1, 2026
  3. ABSTRACT Reducing human–wildlife conflict is critical for global biodiversity conservation and supporting livelihoods in landscapes where people and wildlife co‐occur. Interventions intended to reduce conflicts and their negative outcomes are diverse and widespread, yet there is often a dearth of empirical evidence regarding effectiveness, particularly at appropriate spatiotemporal scales. We investigate an underappreciated question relevant to large carnivore–livestock systems globally regarding spillover effects of anti‐conflict interventions: Do fortified livestock enclosures modify carnivore predation on livestock for neighbors who lack such interventions? We use ca. 25,000 monthly reports from agropastoralists in an East African landscape critical for large carnivore conservation. Results from Bayesian multilevel statistical models demonstrate robust effects of fortified livestock enclosures in reducing reported predation not only in target households, but also in neighboring households that lack such fortification—a beneficial spillover effect. Results provide empirical evidence for policy and practice regarding tools to reduce large carnivore conflicts while pointing to the important role of complex‐systems processes in determining coexistence outcomes. 
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    Free, publicly-accessible full text available March 1, 2026
  4. Abstract People’s observations of climate change and its impacts, mediated by cultures and capacities, shape adaptive responses. Adaptation is critical in regions of rainfed smallholder agriculture where changing rainfall patterns have disproportionate impacts on livelihoods, yet scientific climate data to inform responses are often sparse. Despite calls for better integration of local knowledge into adaptation frameworks, there is a lack of empirical evidence linking both smallholder climate observations and scientific data to on-farm outcomes. We combine smallholder observations of past seasonal rainfall timing with satellite-based rainfall estimates in Uganda to explore whether farmers’ ability to track climate patterns is associated with higher crop yields. We show that high-fidelity tracking, or alignment of farmer recall with recent rainfall patterns, predicts higher yields in the present year, suggesting that farmers may translate their cumulative record of environmental knowledge into productive on-farm decisions, such as crop selection and timing of planting. However, tracking of less-recent rainfall (i.e., 1–2 decades in the past) does not predict higher yields in the present, while climate data indicate significant trends over this period toward warmer and wetter seasons. Our findings demonstrate the value of smallholder knowledge systems in filling information gaps in climate science while suggesting ways to improve adaptive capacity to climate change. 
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  5. null (Ed.)
    Abstract Substantial research on the teleconnections between rainfall and sea-surface temperatures (SSTs) has been conducted across equatorial Africa as a whole, but currently no focused examination exists for western Uganda, a rainfall transition zone between eastern equatorial Africa (EEA) and central equatorial Africa (CEA). This study examines correlations between satellite-based rainfall totals in western Uganda and SSTs – and associated indices – across the tropics over 1983-2019. It is found that rainfall throughout western Uganda is teleconnected to SSTs in all tropical oceans, but much more strongly to SSTs in the Indian and Pacific Oceans than the Atlantic Ocean. Increased Indian Ocean SSTs during boreal winter, spring, and autumn and a pattern similar to a positive Indian Ocean Dipole during boreal summer are associated with increased rainfall in western Uganda. The most spatially complex teleconnections in western Uganda occur during September-December, with northwestern Uganda being similar to EEA during this period and southwestern Uganda being similar to CEA. During boreal autumn and winter, northwestern Uganda has increased rainfall associated with SST patterns resembling a positive Indian Ocean Dipole or El Niño. Southwestern Uganda does not have those teleconnections; in fact, increased rainfall there tends to be more associated with La Niña-like SST patterns. Tropical Atlantic Ocean SSTs also appear to influence rainfall in southwestern Uganda in boreal winter as well as in boreal summer. Overall, western Uganda is a heterogeneous region with respect to rainfall-SST teleconnections; therefore, southwestern Uganda and northwestern Uganda require separate analyses and forecasts, especially during boreal autumn and winter. 
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