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Pest Alarm: Sentinel Trees Give Advance Warning

Sentinel Trees Pests

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The United States, Europe and China are growing “sentinel trees” in strategic locations around the world to receive advance warnings of destructive pests that could destroy native plantings. According to a study published in Plos One, “Sentinel nurseries represent one potential mechanism to address the current lack of knowledge about pests in the countries from where live plants are shipped and the threats they represent to native flora and crops in importing countries.” As global trade intensifies, the risk for accidental importing of and exposure to new invasive pests is a constant worry for entomologists and arborists, stimulating a search for new tactics to prevent future losses.
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Global Brief: Natural Thinking Spending Time in Nature Increases Cognitive Performance
More of our time is spent indoors than ever before. One of the ways by which nature may improve cognitive function (i.e. the acquisition of and goal-oriented use of knowledge) is by improving memory formation and recall, specifically that of short-term or working memory, and goal-oriented or directed attention; the kind that requires focused effort. By comparing and contrasting 13 studies, a team of researchers has shed light on this complex interaction in research published in Frontiers in Psychology. The studies used the backwards digit span task, which requires participants to invert a series of numbers and repeat them back. All demonstrated significantly improved cognition in nature as compared to urban environments. The benefits of studies like this are two-fold: not only are we learning more about how the brain interacts with its environment, but also how to leverage this interaction to lead healthier, more productive and happier lives.
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