Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast

Upwelling intensity modifies coastal primary production and influences individual traits of habitat-forming species. Along the Peruvian coast, beds of the mytilid Perumytilus purpuratus provide structurally complex habitats that harbour many organisms. We predict that in the nutrient-rich system of...

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Autores principales: Firstater, F.N., Hidalgo, F.J., Lomovasky, B.J., Ramos, E., Gamero, P., Iribarne, O.O.
Formato: JOUR
Lenguaje:English
Materias:
Bottom-up
Community structure
Peru
Perumytilus purpuratus
Rocky intertidal
biomass
community structure
fauna
habitat structure
mollusc
nutrient
predator
primary production
upwelling
Jehlius cirratus
Mytilidae
Perumytilus
Thoracica
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1438387X_v65_n2_p187_Firstater
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_1438387X_v65_n2_p187_Firstater
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spelling todo:paper_1438387X_v65_n2_p187_Firstater2023-10-03T16:16:07Z Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast Firstater, F.N. Hidalgo, F.J. Lomovasky, B.J. Ramos, E. Gamero, P. Iribarne, O.O. Bottom-up Community structure Peru Perumytilus purpuratus Rocky intertidal biomass community structure fauna habitat structure mollusc nutrient predator primary production upwelling Peru Jehlius cirratus Mytilidae Perumytilus Perumytilus purpuratus Thoracica Upwelling intensity modifies coastal primary production and influences individual traits of habitat-forming species. Along the Peruvian coast, beds of the mytilid Perumytilus purpuratus provide structurally complex habitats that harbour many organisms. We predict that in the nutrient-rich system of Central Peru, the modification of structural complexity would have stronger effects on the Perumytilus community than nutrient addition. We experimentally examined the effects of nutrient addition on the Perumytilus-dominated assemblage and we evaluated the potential effect of varying shell size on the Perumytilus-dominated assemblage. Nutrient addition to the mussel bed with slow-release fertilizers caused no changes in the total macro- and microalgal biomass and did not affect abundances or composition of the assemblage. To explore the effect of structural complexity on the Perumytilus assemblage, we manipulated mussel size with experimental bags containing small and large individuals. Predators, grazers and mobile organisms were more abundant among smaller mussels, with smaller gap volume, whereas the barnacle Jehlius cirratus was more abundant on larger mussels. In conclusion, point-source nutrient addition to the mussel bed did not enhance primary production. However, the modification of structural characteristics related to mussel size induced changes in the faunal assemblage. Thus, it seems that in this nutrient-rich system, nutrient enhancement would not significantly affect Perumytilus and its assemblage, whereas structural habitat seems to play an important role in shaping this community. © 2010 Springer-Verlag and AWI. Fil:Lomovasky, B.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1438387X_v65_n2_p187_Firstater
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Bottom-up
Community structure
Peru
Perumytilus purpuratus
Rocky intertidal
biomass
community structure
fauna
habitat structure
mollusc
nutrient
predator
primary production
upwelling
Peru
Jehlius cirratus
Mytilidae
Perumytilus
Perumytilus purpuratus
Thoracica
spellingShingle Bottom-up
Community structure
Peru
Perumytilus purpuratus
Rocky intertidal
biomass
community structure
fauna
habitat structure
mollusc
nutrient
predator
primary production
upwelling
Peru
Jehlius cirratus
Mytilidae
Perumytilus
Perumytilus purpuratus
Thoracica
Firstater, F.N.
Hidalgo, F.J.
Lomovasky, B.J.
Ramos, E.
Gamero, P.
Iribarne, O.O.
Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast
topic_facet Bottom-up
Community structure
Peru
Perumytilus purpuratus
Rocky intertidal
biomass
community structure
fauna
habitat structure
mollusc
nutrient
predator
primary production
upwelling
Peru
Jehlius cirratus
Mytilidae
Perumytilus
Perumytilus purpuratus
Thoracica
description Upwelling intensity modifies coastal primary production and influences individual traits of habitat-forming species. Along the Peruvian coast, beds of the mytilid Perumytilus purpuratus provide structurally complex habitats that harbour many organisms. We predict that in the nutrient-rich system of Central Peru, the modification of structural complexity would have stronger effects on the Perumytilus community than nutrient addition. We experimentally examined the effects of nutrient addition on the Perumytilus-dominated assemblage and we evaluated the potential effect of varying shell size on the Perumytilus-dominated assemblage. Nutrient addition to the mussel bed with slow-release fertilizers caused no changes in the total macro- and microalgal biomass and did not affect abundances or composition of the assemblage. To explore the effect of structural complexity on the Perumytilus assemblage, we manipulated mussel size with experimental bags containing small and large individuals. Predators, grazers and mobile organisms were more abundant among smaller mussels, with smaller gap volume, whereas the barnacle Jehlius cirratus was more abundant on larger mussels. In conclusion, point-source nutrient addition to the mussel bed did not enhance primary production. However, the modification of structural characteristics related to mussel size induced changes in the faunal assemblage. Thus, it seems that in this nutrient-rich system, nutrient enhancement would not significantly affect Perumytilus and its assemblage, whereas structural habitat seems to play an important role in shaping this community. © 2010 Springer-Verlag and AWI.
format JOUR
author Firstater, F.N.
Hidalgo, F.J.
Lomovasky, B.J.
Ramos, E.
Gamero, P.
Iribarne, O.O.
author_facet Firstater, F.N.
Hidalgo, F.J.
Lomovasky, B.J.
Ramos, E.
Gamero, P.
Iribarne, O.O.
author_sort Firstater, F.N.
title Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast
title_short Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast
title_full Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast
title_fullStr Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast
title_full_unstemmed Habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the Peruvian coast
title_sort habitat structure is more important than nutrient supply in modifying mussel bed assemblage in an upwelling area of the peruvian coast
url http://hdl.handle.net/20.500.12110/paper_1438387X_v65_n2_p187_Firstater
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