Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/56650
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Drifting filamentous algal mats disturb sediment fauna: Impacts on macro-meiofaunal interactions |
Autor: | Arroyo, Nina Larissa CSIC ORCID; Aarnio, K.; Mäensivu, M.; Bonsdorff, E. | Palabras clave: | Driftingalgalmats Harpacticoid copepods |
Fecha de publicación: | 2012 | Editor: | Elsevier | Citación: | Journal of Experimental Marine Biology and Ecology 420-421: 77- 90 (2012) | Resumen: | We conducted a laboratory experiment to investigate the effects of drifting algal conglomerates on meiofauna and how its response to the presence of various macrobenthic species was modified by them. We mimicked a situation which is common in the archipelago area of the Baltic Sea, where algal mats become stagnant in shallow embayments, covering wide areas in whose centre hypoxic and even anoxic conditions develop rapidly. We used three macrobenthic species: Macoma balthica, Hediste diversicolor and Marenzelleria spp., which have shown different tolerance degrees to the drifting algae. In our experiment, drifting algae caused a major decline in sediment meiofaunal abundance and changes in the community structure, both with and without the three macrobenthic species under analysis. Of the three macrobenthic species, Marenzelleria spp. seemed to have a higher tolerance to low oxygen levels induced by the algal mats, while M. balthica and H. diversicolor mortality increased after 6. days under the algae. Both Hediste and Macoma seemed to exert a double facilitating effect: into the sediment, probably by increasing oxygen levels in deeper layers and through sediment reworking; and into the algae, via disturbance of surface layers, enhancing meiofaunal escape to the algal mass and probably their survival from the hypoxia induced below. Hediste also caused a decrease in harpacticoid copepod abundance, presumably through predation, and this was also the case for Marenzelleria in whose presence the abundance of copepods, but also turbellarians, was drastically reduced. The so far undocumented dramatic effect caused by drifting algae on meiofauna populations in our experiment shows how the negative impact of hypoxia induced by drifting algal mats (eutrophication) is propagated to almost all levels of the trophic and functional chain, influencing species interactions even at the lowest levels. This might be especially important in low diversity systems such as the Baltic Sea, were species and functional diversity are already depauperated. © 2012 Elsevier B.V. | Versión del editor: | http://dx.doi.org/10.1016/j.jembe.2012.03.020 | URI: | http://hdl.handle.net/10261/56650 | DOI: | 10.1016/j.jembe.2012.03.020 | ISSN: | 0022-0981 |
Aparece en las colecciones: | (IMEDEA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
33
checked on 24-mar-2024
WEB OF SCIENCETM
Citations
32
checked on 29-feb-2024
Page view(s)
349
checked on 28-mar-2024
Download(s)
124
checked on 28-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.