Abstract
An experimental study was conducted in a South Carolina, USA salt marsh to examine relationships between meiofaunal-sized tube structure and densities of burrowing meiofauna. Abundance of the tube-building polychaete Manayunkia aestuarina Bourne was increased by erecting exciosure areas from June–August 1979. Non-manipulated areas of identical dimensions were staked out in adjacent locales. Densities of burrowing meiofauna and nematode trophic groups, and volumes of Spartina alterniflora root mat and tube-builders were monitored approximately every 2 wk from each experimental treatment. Volumes of tube-builders were significantly higher inside exclosure sites on all dates in July and August. Root-mat volume and total number of nematodes were not different between treatments at any time. The dominant copepod species, Stenhelia (D.) bifidia, and the nematode species, Spirinia sp., first increased in number inside manipulated sites and then decreased in abundance as tube volume increased. No general trend was apparent for nematode trophic groups when areas with increased volumes of tubebuilders were compared to unmanipulated sites. The fact that densities of S (D.) bifidia and Spirina sp. decreased only when tube-builders attained highest abundance suggests that negative interactions between tube-builders and these meiofaunal taxa may be effective only at elevated abundances.
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Communicated by S. K. Pierce, College Park
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Bell, S.S. An experimental study of the relationship between below-ground structure and meiofaunal taxa. Marine Biology 76, 33–39 (1983). https://doi.org/10.1007/BF00393052
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DOI: https://doi.org/10.1007/BF00393052