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Maize breeding programmes have developed a new generation of hybrid varieties to improve smallholders’ productivity and enhance climate resilience. However, varietal turnover in Kenya remains low, suggesting that new hybrid maize varieties may not fully address smallholders’ needs or that knowledge about them remains limited. In this exploratory study, we applied a method referred to as means-end chains to understand the attri...
The Influence of Time, Tide, and Place on Fine-Scale Nekton Distribution: Insights from the San Francisco EstuaryNARA Subscribed
The location of estuarine organisms varies based on geophysical cycles and environmental conditions, which can strongly bias understanding of organism abundance and distribution. In the San Francisco Estuary, California, extensive monitoring surveys have provided insight into the life history and ecology of certain commercially important or legislatively protected fish species. However, there remains substantial uncertainty in...
Putting consumers first in food systems analysis: identifying interventions to improve diets in rural GhanaNARA Subscribed
A critical, yet underexplored, dimension of food systems is how consumer food preferences and beliefs interact with the food environment. We present a consumer-centered approach to identifying options for improving diets. The Value Chains for Nutrition (VCN) mixed-methods multi-disciplinary analytical approach was applied in rural Ghana. Data from in-depth consumer interviews, structured vendor interviews, and (secondary) hous...
Sapling Stocking Targets for Multiple Management Goals in Northern Hardwood Forests: How Do Stands Measure Up?NARA Subscribed
Well-stocked natural tree regeneration is critical to sustainable management of northern hardwood forests (NHF) by selection silviculture, but explicit goals and stocking criteria for sapling recruit size classes are lacking. For stems 0–2 in. (0–5.1 cm), we define 171 and 691 stems ac−1 (422.5 and 1,707.5 ha−1) as lower and upper full stocking thresholds for basic NHF management goals (wood and biomass productivity) and overa...
Prolonging survival in good health is a fundamental societal goal. However, the leading determinants of disability-free survival in healthy older people have not been well established. Data from ASPREE, a bi-national placebo-controlled trial of aspirin with 4.7 years median follow-up, was analysed. At enrolment, participants were healthy and without prior cardiovascular events, dementia or persistent physical disability. Disab...
Capacities of local maize seed enterprises in Mexico: Implications for seed systems developmentNARA Subscribed
Where maize plays a critical role in food security, governments and donors have invested heavily in support of local, privately owned, often small and medium sized, maize seed enterprises (maize SMEs). Underpinning these investments are strong assumptions about maize SMEs’ capacity to produce and distribute seed to smallholders. This study assesses the capacities of 22 maize SMEs in Mexico that engaged with MasAgro—a large-sca...
The expansion of agro-dealers into remote areas can be seen as conducive to more smallholders adopting new technologies and inputs, to include improved seed and fertilizer. However, lower travel costs may be offset by agro-dealer decisions on stocking and pricing, reflecting both travel time from wholesale markets as well as the level of competition in localized areas. This paper investigates the geographical distribution of a...
Well-designed, robust partnerships are important for addressing forest resource problems that intersect diverse ownerships, management, and research expertise. Here, we describe a case study of a research–management partnership. First, we describe the rationale and design of a large-scale, long-term experiment focused on increasing the sustainability and resilience of managed northern hardwoods. With the experiment as context,...
Tree species fine‐root demography parallels habitat specialization across a sandhill soil resource gradientNARA Subscribed
Single species can substantially alter belowground processes in ecosystems via differential root production and death. However, information on species differences in fine‐root demography is virtually absent for natural communities. In this field study, we recorded species‐specific fine‐root ( Pinus palustris , Quercus laevis , Q. incana , and Q. margaretta ) that are distributed differentially along soil resource gradients in...
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