35 research outputs found
Effects of a Novel Ankle Strengthening Protocol on Later al Ankle Strength and Flexibility
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Lettuce (Lactuca sativa) productivity influenced by microbial inocula under nitrogen-limited conditions in aquaponics.
The demand for food will outpace productivity of conventional agriculture due to projected growth of the human population, concomitant with shrinkage of arable land, increasing scarcity of freshwater, and a rapidly changing climate. While aquaponics has potential to sustainably supplement food production with minimal environmental impact, there is a need to better characterize the complex interplay between the various components (fish, plant, microbiome) of these systems to optimize scale up and productivity. Here, we investigated how the commonly-implemented practice of continued microbial community transfer from pre-existing systems might promote or impede productivity of aquaponics. Specifically, we monitored plant growth phenotypes, water chemistry, and microbiome composition of rhizospheres, biofilters, and fish feces over 61-days of lettuce (Lactuca sativa var. crispa) growth in nitrogen-limited aquaponic systems inoculated with bacteria that were either commercially sourced or originating from a pre-existing aquaponic system. Lettuce above- and below-ground growth were significantly reduced across replicates treated with a pre-existing aquaponic system inoculum when compared to replicates treated with a commercial inoculum. Reduced productivity was associated with enrichment in specific bacterial genera in plant roots, including Pseudomonas, following inoculum transfer from pre-existing systems. Increased productivity was associated with enrichment of nitrogen-fixing Rahnella in roots of plants treated with the commercial inoculum. Thus, we show that inoculation from a pre-existing system, rather than from a commercial inoculum, is associated with lower yields. Further work will be necessary to test the putative mechanisms involved
Accounting for heterogeneity in behavioural responses to health-risk information treatments
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Adapting a family intervention to reduce risk factors for sexual exploitation
BackgroundSexually exploited youth are disconnected from societal tethers and need support systems, which makes them some of the most vulnerable of youth. This heightened level of vulnerability increases their risk for violence, abuse, ongoing sexual exploitation and all its sequelae. The purpose of this study was to examine an evidence-based intervention called STRIVE (support to reunite, involve and value each other) that has been a successful family re-engagement strategy with newly homeless youth. We sought to explore its contextual relevance for youth with risk factors for sexual exploitation and identify necessary adaptations to reduce risk factors for sexual exploitation. We deliberately took an intersectional approach in conducting this study.MethodsSix community-based focus groups were conducted with youth at risk for sexual exploitation and their service providers. Each group was recorded, transcribed, coded, and thematically analyzed.ResultsResults from 29 youth and 11 providers indicate that there are unique considerations that must be taken into account while working with youth at risk for sexual exploitation to ensure effective service delivery and/or ethical research. Emergent themes included: setting the stage by building rapport and acknowledging experiences of structural violence, protect and hold which balances youth's need for advocacy/support with their caregivers' need for validation/understanding, and walking the safety tightrope by assessing risks and safety planning.DiscussionFocus groups are an effective methodology when working with traditionally disempowered populations particularly in gaining a range of perspectives to meet unique needs/preferences. Youth at risk for commercial sexual exploitation needs require strengths-based, individualized, multi-systemic approaches