Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/43867
DC FieldValueLanguage
dc.contributor.authorCanhoto, Cristina-
dc.date.accessioned2017-10-12T08:11:09Z-
dc.date.available2017-10-12T08:11:09Z-
dc.date.issued2017-
dc.identifier.issn1470-160Xpor
dc.identifier.urihttps://hdl.handle.net/10316/43867-
dc.description.abstractA stable isotope study was carried out to investigate the feeding ecology of the common goby Pomatoschistus microps larvae (Krøyer, 1838), and to assess differences in the response of planktonic food web to nutrient enrichment, in two ecosystems from the Southern European coast with different levels of historical pollution (estuaries of the Minho and Lima Rivers). At each estuary and time (July 2012, November 2012, February 2013, and June 2013), the fish larvae of two size classes (class 0: 0–10 mm; class 1: 10–15 mm), particulate organic matter (POM), and pelagic zooplankton were collected. The stable isotope mixing model SIAR revealed that, despite temporal differences in the relative proportion of prey items ingested, in both estuaries P. microps larvae feed on both planktonic-hyperbenthic food sources, predating mainly on copepods (from 34% to 60%), Mysidacea (from 16% to 28%), and brachyuran zoea (from 14% to 29%). Fish larvae size classes did not differ significantly for δ15N, and exhibited a very narrow range of the δ13C signature. Enriched δ15N values of all biota in the Lima estuary throughout the study period, with a marked nitrogen enrichment in colder months, are indicative of higher anthropogenic inputs of nitrogen (e.g. sewage and industrial discharges, agriculture) into this system. The δ15N values of fish larvae and other planktonic groups can be a sensitive bioindicator, because they are highly correlated with the nitrogen content of water (ammonium), indicating that this element has transferred through the planktonic food web. Enriched carbon isotope ratios were observed in warmer months, in both estuaries, and the heavier δ13C values in Lima are best explained by differences in the degree of marine influence. This research emphasises the utility of stable isotopes in trophic interactions studies, highlighting the relevance of the stable nitrogen isotope of zooplanktonic communities as a reliable bioindicator to detect pat- terns of anthropogenic nitrogen contamination in estuarine ecosystems.por
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation“SIGNAL” (PTDC/AAC- AMB/110331/2009; FCOMP-01-0124-FEDER-013876)por
dc.rightsopenAccesspor
dc.subjectPomatoschistus microps larvaepor
dc.subjectFish larvaepor
dc.subjectStable isotopespor
dc.subjectBioindicatorpor
dc.subjectTrophic interationspor
dc.subjectNitrogen pollutionpor
dc.titleUse of stable isotope ratios of fish larvae as indicators to assess diets and patterns of anthropogenic nitrogen pollution in estuarine ecosystemspor
dc.typearticle-
degois.publication.firstPage112por
degois.publication.lastPage121por
degois.publication.issue83por
degois.publication.titleEcological Indicatorspor
dc.peerreviewedyespor
dc.identifier.doi10.1016/j.ecolind.2017.07.062por
uc.controloAutoridadeSim-
item.fulltextCom Texto completo-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.languageiso639-1en-
item.openairetypearticle-
item.cerifentitytypePublications-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.orcid0000-0003-3343-8757-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
Files in This Item:
File Description SizeFormat
Baeta et al 2017.pdf601.06 kBAdobe PDFView/Open
Show simple item record

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.