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Temporary streams are dynamic ecosystems that shift between wet and dry states and include the ‘winterbourne’ chalk streams of south England. Our understanding of temporary stream biodiversity is biased, with most research to date exploring aquatic invertebrate communities in benthic sediments during flowing phases. We surveyed the invertebrate communities of the Candover Brook chalk stream, comparing...
The growing use of functional traits in ecological research has brought new insights into biodiversity responses to global environmental change. However, further progress depends on overcoming three major challenges involving (a) statistical correlations between traits, (b) phylogenetic constraints on the combination of traits possessed by any single species, and (c) spatial effects on trait structure...
Many computations perform operations that match this pattern: first, a loop iterates over an input array, producing an array of (partial) results. The loop iterations are independent of each other and can be done in parallel. Second, a reduction operation combines the elements of the partial result array to produce the single final result. We call these two steps a Do&Merge computation. The most...
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