Jason Sircely

ORCID: 0000-0002-8766-4875
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About
Contact & Profiles
Research Areas
  • Rangeland Management and Livestock Ecology
  • Agriculture and Rural Development Research
  • Climate change impacts on agriculture
  • Ecology and Vegetation Dynamics Studies
  • Agriculture Sustainability and Environmental Impact
  • Rangeland and Wildlife Management
  • Agricultural Innovations and Practices
  • Pasture and Agricultural Systems
  • Animal Diversity and Health Studies
  • African history and culture analysis
  • Agricultural Systems and Practices
  • Viral Infections and Vectors
  • Conservation, Biodiversity, and Resource Management
  • Viral Infections and Outbreaks Research
  • Species Distribution and Climate Change
  • Animal Disease Management and Epidemiology
  • Wildlife Ecology and Conservation
  • Zoonotic diseases and public health
  • Fire effects on ecosystems
  • Land Use and Ecosystem Services
  • Genetically Modified Organisms Research
  • Agricultural risk and resilience
  • Agriculture and Farm Safety
  • Soil Moisture and Remote Sensing
  • Network Time Synchronization Technologies

International Livestock Research Institute
2017-2025

Climate Change, Agriculture and Food Security
2017-2024

IGAD Climate Prediction and Applications Center
2023

Columbia University
2009-2012

Crimean Congo hemorrhagic fever (CCHF) is a re-emerging tick-borne zoonosis that caused by CCHF virus (CCHFV). The geographical distribution of the disease and factors influence its occurrence are poorly known. We analysed historical records on outbreaks in various countries across sub-Saharan Africa (SSA) to identify hotspots determine socioecological demographicfactors associated with these outbreaks. used data from were reported between 1981 2022 SSA. To develop common framework for...

10.1038/s41598-025-85873-8 article EN cc-by Scientific Reports 2025-01-17

Abstract Rangelands are Earth's dominant land cover and important providers of ecosystem services. Reliance on rangelands is projected to grow, thus understanding the sensitivity future climates essential. We used a new model moderate complexity that allows, for first time, quantify global changes expected in under climates. The mean annual net primary production ( NPP ) may decline by 10 g C m −2 year −1 2050 Representative Concentration Pathway RCP 8.5, but herbaceous increase slightly...

10.1111/gcb.13995 article EN Global Change Biology 2017-11-21

Abstract Improvements in land use and management are needed at a global scale to tackle interconnected challenges of population growth, poverty, migration, climate change, biodiversity loss, degrading water resources. There hundreds technical options for improving the sustainability preventing or reversing degradation, but there many sociocultural, institutional, economic, policy barriers hindering their adoption large scale. To this challenge, Dryland Systems Program Consultative Group...

10.1002/ldr.3080 article EN Land Degradation and Development 2018-07-04

Rangeland ecosystems and their roles in providing ecosystem services are vulnerable to changes climate, CO2 concentration, management. These drivers forcing widespread rangeland processes vegetation dynamics create two-way interactions feedback loops between biogeochemistry composition. To support spatial simulation forecasting the global rangelands, G-Range rangelands model couples biogeochemical submodels from CENTURY soil organic matter with dynamic populations' for herbs, shrubs, trees....

10.1016/j.rama.2019.03.002 article EN cc-by-nc-nd Rangeland Ecology & Management 2019-05-20

This study estimates the economic contribution of grazing management practices in pastoral systems by specifically undertaking an analysis pastoralists' preferences for and value pastoralists place on them. The applied discrete choice experiment technique using a D-optimal design, multi-attribute preference elicitation method to evaluate options practiced areas Kenya. results show that communities derive positive utility connected enable reciprocal access resources both wet dry seasons....

10.1080/09640568.2019.1584097 article EN Journal of Environmental Planning and Management 2019-05-10

Abstract While livelihoods of Somalian livestock smallholders rely heavily on seasonal climate conditions, little is known long-term implications the changing for this nation. Here, we quantify productivity and profitability across a rainfall gradient in northwestern Somalia. Using Sustainable Grazing Systems (SGS) model, explore 80 future realisations, with global model projections including low- high-impact socio-economic pathways (SSP245 SSP585), two horizons (2040 2080) four case study...

10.1088/2976-601x/ad6fa0 article EN cc-by Deleted Journal 2024-08-15

Low production potential of arid regions heightens vulnerability farms to market shocks and extreme weather events. Here we examine African smallholder farmer perceptions climate change, including perceived (intended) actual adaptation strategies. We invoke survey questionnaires, focus group discussions, interviews meteorological data compare with events realised. showed that most communities change through the lens perturbations rainfall temperature. Perceived increases in precipitation,...

10.3389/past.2024.13424 article EN cc-by Deleted Journal 2024-11-14

Recent studies indicate that species richness can enhance the ability of plant assemblages to support multiple ecosystem functions. To understand how and when services depend on biodiversity, it is valuable expand beyond experimental grasslands. We examined whether diversity improves capacity agroecosystems sustain services—production wood forage, two elements soil formation—in types smallholder fallows in western Kenya. In 18 grazed 21 improved fallows, we estimated biomass quantified...

10.1371/journal.pone.0050152 article EN cc-by PLoS ONE 2012-11-28

Participatory action research in communal grazing lands can inform end users on cost-effective methods for restoring land to improve local livelihoods and environmental quality terms of reduced degradation enhanced ecosystem services. A multi-stakeholder process involving producers, development practitioners, researchers is demonstrated conducting restore degraded East Africa. Producer-managed trials provided actionable evidence brief resting durations reseeding pastoral rangelands Kenya,...

10.5751/es-12848-270110 article EN cc-by Ecology and Society 2022-01-01

The demand for livestock-derived foods has steadily grown over the past decades and rising incomes human populations are expected to see further increase. It is unclear if current livestock feed resources adequately prepared meet future especially given looming challenges of climate change. Many feeds such as grasses, crop by-products, other biomass may not be widely commercially or sold in formal markets but critical sources many low-resource settings which ruminant production important....

10.31235/osf.io/qmdrt article EN 2021-05-16

Abstract Across the globe, biodiversity loss is occurring at an unprecedented rate. Rare species are especially susceptible to extinction, given that they typically have small population sizes and restricted geographic ranges, less adaptable disturbances, greater habitat specialists. However, while rare may be prone it remains unclear whether of important ecosystem function. In addition, consider way in which rarity defined, there multiple definitions based on a species' range, specificity,...

10.1038/npre.2010.5243.1 preprint EN Nature Precedings 2010-11-12
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