Observations of abundance changes in one group of insects—for example grasshoppers—say very little about how other types of insects, such as flies, are doing, even in the same place. This is because different groups of insects may show similar trends in one place, but dissimilar trends in other places. These are the findings of a new meta-study systematically examining long-term data on insects from more than 900 locations worldwide. The study, published in Biology Letters, was led by a team of researchers from the German Centre for Integrative Biodiversity Research (iDiv), the Martin Luther University Halle-Wittenberg (MLU), the Friedrich Schiller University Jena and the Helmholtz Centre for Environmental Research (UFZ). It highlights the importance of monitoring multiple groups of species simultaneously to provide guidelines for conservation policies.
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Source: Phys.org