title: Oil spill effects on macrofaunal communities and bioturbation of pristine marine sediments (Caleta Valdés, Patagonia, Argentina): experimental evidence of low resistance capacities of benthic systems without history of pollution.
abstract: The Patagonian coast is characterized by the existence of pristine ecosystems which may be particularly sensitive to oil contamination. In this study, a simulated oil spill at acute and chronic input levels was carried out to assess the effects of contamination on the macrobenthic community structure and the bioturbation activity of sediments sampled in Caleta Valdés creek. Superficial sediments were either noncontaminated or contaminated by Escalante crude oil and incubated in the laboratory for 30 days. Oil contamination induced adverse effects on macrobenthic community at both concentrations with, for the highest concentration, a marked decrease of approximately 40 and 55 % of density and specific richness, respectively. Besides the disappearance of sensitive species, some other species like Oligochaeta sp. 1, Paranebalia sp., and Ostracoda sp. 2 species have a higher resistance to oil contamination. Sediment reworking activity was also affected by oil addition. At the highest level of contamination, nearly no activity was observed due to the high mortality of macroorganisms. The results strongly suggest that an oil spill in this protected marine area with no previous history of contamination would have a deep impact on the non-adapted macrobenthic community.
authors: Centro Nacional Patagónico (CENPAT - CONICET), Bvd. Brown 2915, Puerto Madryn, 9120, Argentina. ferrando@cenpat-conicet.gob.ar.
authors: Agustina
authors: A
authors: Ferrando
authors: Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Bvd. Brown 3000, Puerto Madryn, 9120, Argentina.
authors: Emilia
authors: E
authors: Gonzalez
authors: Centro Nacional Patagónico (CENPAT - CONICET), Bvd. Brown 2915, Puerto Madryn, 9120, Argentina.|Universidad Tecnológica Nacional, Facultad Regional Chubut, Av. del Trabajo 1536, Puerto Madryn, 9120, Argentina.
authors: Marcos
authors: M
authors: Franco
authors: Centro Nacional Patagónico (CENPAT - CONICET), Bvd. Brown 2915, Puerto Madryn, 9120, Argentina.
authors: Marta
authors: M
authors: Commendatore
authors: Centro Nacional Patagónico (CENPAT - CONICET), Bvd. Brown 2915, Puerto Madryn, 9120, Argentina.|Universidad Tecnológica Nacional, Facultad Regional Chubut, Av. del Trabajo 1536, Puerto Madryn, 9120, Argentina.
authors: Marina
authors: M
authors: Nievas
authors: Aix Marseille Université, CNRS, Université de Toulon, IRD, MIO UM 110, Marseille, 13288, France.
authors: Cécile
authors: C
authors: Militon
authors: Aix Marseille Université, CNRS, Université de Toulon, IRD, MIO UM 110, Marseille, 13288, France.
authors: Georges
authors: G
authors: Stora
authors: Université de Toulouse, INP, UPS, EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), 118 Route de Narbonne, 31062, Toulouse, France.|CNRS; EcoLab, Toulouse, 31062, France.
authors: Franck
authors: F
authors: Gilbert
authors: Centro Nacional Patagónico (CENPAT - CONICET), Bvd. Brown 2915, Puerto Madryn, 9120, Argentina.
authors: José Luis
authors: JL
authors: Esteves
authors: Aix Marseille Université, CNRS, Université de Toulon, IRD, MIO UM 110, Marseille, 13288, France.
authors: Philippe
authors: P
authors: Cuny
mesh_terms: D000818:Animals; D001118:Argentina; D003445:Crustacea; D017753:Ecosystem; D019015:Geologic Sediments; D009835:Oligochaeta; D010578:Petroleum; D059392:Petroleum Pollution
chemical_list: D010578:Petroleum
keywords: Bioturbation; Macrobenthic communities; Oil pollution; Patagonia; Pristine marine sediments; Resistance capacities
references: Biodegradation. 2000;11(2-3):85-105
references: 11440245
references: PLoS One. 2012;7(11):e49795
references: 23185440
references: Environ Pollut. 2008 Nov;156(1):82-9
references: 18280019
references: Mar Pollut Bull. 2009 Apr;58(4):487-95
references: 19178918
references: Nat Rev Microbiol. 2006 Mar;4(3):173-82
references: 16489346
references: Environ Manage. 2007 Nov;40(5):814-21
references: 17929085
references: Mar Pollut Bull. 2005;51(8-12):1034-40
references: 16291203
references: Chemosphere. 2007 Jul;68(7):1327-34
references: 17337033
references: Acta Biotheor. 2008 Jun;56(1-2):123-35
references: 18247133
references: Chemosphere. 1999 Feb;38(5):1157-64
references: 10028664
references: Mar Pollut Bull. 2008 Dec;56(12):2100-5
references: 18945453
references: Mar Pollut Bull. 2007;55(1-6):215-24
references: 17070857
references: Mar Pollut Bull. 2006 May;52(5):582-90
references: 16600312
references: Mar Pollut Bull. 2003 Sep;46(9):1111-9
references: 12932492
references: Aquat Toxicol. 2011 Apr;102(3-4):142-9
references: 21356176
references: Environ Pollut. 1998;99(1):115-22
references: 15093336
references: Sci Rep. 2014 Sep 24;4:6463
references: 25249055
references: Chemosphere. 2015 Feb;120:131-7
references: 25016336
references: Mar Pollut Bull. 2005 Jun;50(6):624-37
references: 15935178
references: Mar Pollut Bull. 2013 May 15;70(1-2):189-96
references: 23522682
references: Mar Environ Res. 2005 Sep;60(3):289-316
references: 15769501
references: Mar Environ Res. 2004 Feb-Mar;57(1-2):121-35
references: 12962650
references: Mar Pollut Bull. 2003 Sep;46(9):1090-101
references: 12932490
references: Sci Total Environ. 2003 Dec 30;317(1-3):207-33
references: 14630423
references: Mar Pollut Bull. 2012 Dec;64(12):2681-91
references: 23137553
references: Environ Sci Technol. 2003 Jul 1;37(13):252A-258A
references: 12875383
references: Sci Total Environ. 2007 Dec 15;388(1-3):168-83
references: 17884141
references: Environ Sci Pollut Res Int. 2015 Oct;22(20):15285-93
references: 25471721
references: Chemosphere. 2013 Jan;90(3):1103-8
references: 23022168
references: Mar Pollut Bull. 2002 Mar;44(3):185-203
references: 11954735
references: Mar Pollut Bull. 2007 Apr;54(4):452-9
references: 17254615
references: PLoS One. 2013 Jun 10;8(6):e65347
references: 23762350
references: PLoS One. 2013 Jun 28;8(6):e67212
references: 23840628
references: Chemosphere. 2011 Mar;82(10):1358-66
references: 21186046
references: Mar Pollut Bull. 2010 Nov;60(11):1939-45
references: 20797735
references: Mar Pollut Bull. 2014 May 15;82(1-2):208-20
references: 24655946
references: Aquat Toxicol. 2007 Aug 15;84(1):103-10
references: 17631973
references: Mar Environ Res. 2012 Mar;74:20-31
references: 22189069
references: Mar Environ Res. 2000 Apr;49(3):255-78
references: 11285729
references: Environ Monit Assess. 2011 Oct;181(1-4):13-27
references: 21188510
references: Chemosphere. 2002 Sep;48(9):947-54
references: 12222790
references: Mar Pollut Bull. 2010 Jul;60(7):947-53
references: 20413132
references: J Exp Mar Biol Ecol. 2001 Jan 31;256(2):199-213
references: 11164863
references: Mar Pollut Bull. 2013 Aug 15;73(1):291-9
references: 23743269
references: Mar Pollut Bull. 2014 May 15;82(1-2):167-74
references: 24667085
references: Mar Pollut Bull. 2002 May;44(5):367-82
references: 12146819