Managing complexity of marine ecosystems: from the monitoring breakdown structure (MBS) to the baseline assessment. Trace metal concentrations in biomonitors of the Beagle Channel, Patagonia (2005–2012)

Conti, Marcelo Enrique; Tudino, Mabel Beatriz; Finoia, Maria Grazia; Simone, Cristina; Stripeikis, Jorge

Artículo de Publicación Periódica:
Managing complexity of marine ecosystems: from the monitoring breakdown structure (MBS) to the baseline assessment. Trace metal concentrations in biomonitors of the Beagle Channel, Patagonia (2005–2012)

dc.contributor.author	Conti, Marcelo Enrique
dc.contributor.author	Tudino, Mabel Beatriz
dc.contributor.author	Finoia, Maria Grazia
dc.contributor.author	Simone, Cristina
dc.contributor.author	Stripeikis, Jorge
dc.coverage.spatial	Beagle, Canal de (América del Sur)	es
dc.coverage.temporal	2005-2012
dc.date.accessioned	2019-11-20T19:41:40Z
dc.date.available	2019-11-20T19:41:40Z
dc.date.issued	2019-09
dc.description.abstract	"In this study we propose a conceptual framework, i.e. the Monitoring Breakdown Structure (MBS) as a tool for the management of marine ecosystems. The conceptual framework thinks through the complexity of marine ecosystems keeping into account the variety (space) and variability (time) dimensions. Consistently with the MBS we have built the control charts of trace metal concentrations of two selected biomonitors in the Beagle Channel (south Patagonia) (case study). Thus, we have tested the aptitude of two species of mollusks as biomonitors of heavy metal (HMs) pollution. The selected species were the limpet Nacella (P) magellanica and the bivalve Mytilus chilensis. Seven hundred eighty-five samples were collected along 170 km of the coastal area of the Beagle Channel (BC), (Tierra del Fuego, Argentina) in seven selected georeferenced locations and four sampling campaigns (2005, 2007, 2011, 2012). Cd, Cr, Cu, Ni, Pb and Zn determinations in seawater and mollusks by atomic absorption spectrometry (AAS) were carried out. The calculation of the respective concentration factors (CFs), i.e. their capacity as strong bioaccumulators, was also conducted. This is of relevance because it aims to use these data as a baseline reference for other geographical areas. Second, we have compared metal bioaccumulation differences among sites and the contamination trend by building, for the first time, the control charts of the baseline metal concentrations in the biomonitors. For these purposes, we applied probabilistic Johnson's method. Furthermore, the control charts (based on four years baseline data) allowed us to test the contamination trend by plotting data from 2012 vs 2011. Our results confirm N. magellanica as an extremely strong accumulator of Cd, and M chilensis strong bioaccumulator of Cd and Zn. Zn was the most abundant metal followed by Cu. Overall, regarding the contamination trend, based on thousands of determinations we observed that the six mean metal levels were quite constant over time. Moreover, metal distribution among sites turned out to be not univocal (no one site is more contaminated than the other sites). Thus, the expected hypothesis of Ushuaia Harbour as being the most contaminated site should be reconsidered. This reinforces the hypothesis of our data as baseline data (except for cadmium), that should be considered in management decisions about future environmental monitoring programs, i.e. preventing/managing marine accidents."	en
dc.identifier.issn	1470-160X
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/1826
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2019.05.013
dc.relation	info:eu-repo/grantAgreement/UNIROMA/C26A104LN5-2010/IT. Roma
dc.relation	info:eu-repo/grantAgreement/UNIROMA/C26H15TY3S-2015/IT. Roma
dc.relation	info:eu-repo/grantAgreement/UBA/UBACyT/20020130100099BA/AR.Ciudad Autónoma de Buenos Aires
dc.subject	INDICADORES	es
dc.subject	BIOLOGIA	es
dc.subject	FAUNA MARINA	es
dc.subject	NACELLA MAGELLANICA	es
dc.subject	MOLUSCOS	es
dc.subject	MYTILUS CHILENSIS	la
dc.subject	METALES PESADOS	es
dc.title	Managing complexity of marine ecosystems: from the monitoring breakdown structure (MBS) to the baseline assessment. Trace metal concentrations in biomonitors of the Beagle Channel, Patagonia (2005–2012)	en
dc.type	Artículos de Publicaciones Periódicas	es
dc.type	info:eu-repo/semantics/acceptedVersion
dspace.entity.type	Artículo de Publicación Periódica
itba.description.filiation	Fil: Tudino, Mabel Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
itba.description.filiation	Fil: Finoia, Maria Grazia. Istituto Superiore per la Protezione e la Ricerca Ambientale; Italia.
itba.description.filiation	Fil: Simone, Cristina. Sapienza Università di Roma; Italia.
itba.description.filiation	Fil: Conti, Marcelo Enrique. Sapienza Università di Roma; Italia.
itba.description.filiation	Fil: Stripeikis, Jorge. Instituto Tecnológico de Buenos Aires; Argentina.