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- W2973555630 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 632:43-57 (2019) - DOI: https://doi.org/10.3354/meps13134 Regenerative bioturbation by intertidal burrowing crabs modifies microphytobenthic composition and enhances primary production in SW Atlantic mudflats Micaela Giorgini1,*, Ana Miguez1, K. Soledad Esquius2, Clara Diaz de Astarloa1, Oscar Iribarne1, Eugenia Fanjul1, Mauricio Escapa1 1Laboratorio de Ecología, 2Laboratorio de Limnología, Instituto de Investigaciones Marinas y Costeras (IIMyC), UNMdP - CONICET, Mar del Plata, CP 7600, Argentina *Corresponding author: mikungiorgini@gmail.com ABSTRACT: In coastal systems, benthic microalgae are important primary producers that significantly contribute to global primary production. Microphytobenthic (MPB) community structure and the ecosystem functions that it mediates are modulated by biotic and abiotic factors. Through burrowing activity, different types of bioturbators can impact MPB in different ways. Through directed sampling and field experiments performed at the Mar Chiquita coastal lagoon (Argentina), we evaluated the effect of regenerative bioturbation (continuous digging and maintenance of burrows, with sediment transfer from depth to surface) by the intertidal burrowing crab Neohelice (Chasmagnatus) granulata on MPB. We compared sediment properties and MPB attributes between natural burrowed and non-burrowed areas. Moreover, we experimentally manipulated regenerative bioturbation to evaluate if MPB composition and primary production are altered by crab burrowing activity. Field sampling showed that MPB and sediment properties differed between natural burrowed and non-burrowed areas. Experimental results indicated that regenerative bioturbation by N. granulata increased sediment oxygen concentration at each measured depth and also changed MPB composition (due to the reduced total abundance of cyanobacteria), but nearly doubled primary production in comparison with plots without bioturbation. Thus, the net effects of regenerative bioturbation were positive for MPB productivity, reinforcing the idea that this kind of bioturbation is an important biological force that enhances primary production in intertidal systems. KEY WORDS: Regenerative bioturbation · Microphytobenthos · Burrowing crab · Neohelice (Chasmagnatus) granulata · Intertidal sediments Full text in pdf format PreviousNextCite this article as: Giorgini M, Miguez A, Esquius KS, Diaz de Astarloa C, Iribarne O, Fanjul E, Escapa M (2019) Regenerative bioturbation by intertidal burrowing crabs modifies microphytobenthic composition and enhances primary production in SW Atlantic mudflats. Mar Ecol Prog Ser 632:43-57. https://doi.org/10.3354/meps13134 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 632. Online publication date: December 12, 2019 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2019 Inter-Research." @default.
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- W2973555630 date "2019-12-12" @default.
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- W2973555630 title "Regenerative bioturbation by intertidal burrowing crabs modifies microphytobenthic composition and enhances primary production in SW Atlantic mudflats" @default.
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