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• W2130265655 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 308:37-48 (2006) - doi:10.3354/meps308037 Limited evidence of interactive disturbance and nutrient effects on the diversity of macrobenthic assemblages Valeska Contardo Jara1,5, José Henrique S. Miyamoto2, Bernardo A. P. da Gama2, Markus Molis3,4,*, Martin Wahl3, Renato C. Pereira2 1Institute of Biology, Animal Systematics and Evolution, Free University of Berlin, Königin-Luise-Straße 1-3, 14195 Berlin, Germany 2Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal Fluminense, CP 100644, CEP 24001-970 Niterói, Rio de Janeiro, Brazil 3Leibniz Institute of Marine Sciences, Experimental Ecology, Düsternbrooker Weg 20, 24105 Kiel, Germany 4Present address: Biologische Anstalt Helgoland, Alfred Wegener Institute for Polar and Marine Research, Marine Station, Kurpromenade 201, 27498 Helgoland, Germany 5Present address: Leibniz Institute for Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, 12587 Berlin, Germany *Corresponding author. Email: mmolis@awi-bremerhaven.de ABSTRACT: The causes and consequences of the coexistence of a number of species in a given habitat have attracted ecological research for several decades. Numerous theories have been developed in this context, including the ‘intermediate disturbance hypothesis’ (IDH), but supportive experimental evidence remains scarce and contradictory, leading scientists to propose the existence of an interaction between disturbance and productivity. This study assessed the interactive effects of disturbance and nutrient enrichment at 1 oligotrophic (Arraial do Cabo) and 1 eutrophic (Guanabara Bay) site on the coast of Brazil. At each site, an epibenthic assemblage was allowed to establish on settlement panels (PVC) for 3 mo prior to a 6 mo manipulation phase comprising nutrient enrichment and disturbance (biomass removal). Our results revealed site-specific diversity-driving processes in the absence of disturbance. Nevertheless, diversity and species richness peaked at both sites at some intermediate level of disturbance, corroborating the IDH. Nutrient enrichment increased total species richness and algal species richness in particular, but only at the oligotrophic site. Only here, did nutrient enrichment eliminate the unimodal species richness pattern observed along the disturbance gradient under ambient nutrient concentrations. Such interactive effects of disturbance and productivity on diversity confirm the general predictions of advanced IDH models, e.g. the Kondoh model. The present study indicates that interactive effects of ‘bottom-up’ and ‘top-down’ processes may explain more of the variation in community diversity than the separate models of disturbance–diversity and productivity–diversity relationships. KEY WORDS: Intermediate disturbance hypothesis · Species diversity · Nutrient enrichment · ‘Bottom-up’ · Fouling · Productivity · Species richness · Brazil Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 308. Online publication date: February 16, 2006 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2006 Inter-Research." @default.
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• W2130265655 date "2006-02-16" @default.
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• W2130265655 title "Limited evidence of interactive disturbance and nutrient effects on the diversity of macrobenthic assemblages" @default.
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• W2130265655 doi "https://doi.org/10.3354/meps308037" @default.
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