Seasonal variability of δ13C and δ15N of fish and squid in the Cabo Frio upwelling system of the southwestern Atlantic

Soares, Lucy Satiko Hashimoto; Muto, Elizabeti Yuriko; Lopez, Juliana Pierrobon; Clauzet, Gabriela R. V.; Valiela, Iván

doi:10.3354/meps10948

Cited by 14 publications

(13 citation statements)

References 56 publications

(40 reference statements)

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“…This event happens successively during spring and summer in this region, and its frequency is known to have high inter-annual variability [ 16 ]. On a seasonal scale, the effects of the upwelling on the phytoplankton standing stock are strongly dependent upon the frequency and intensity of the nutrient supply [ 11 , 26 , 27 ], mainly during the spring bloom. However, previous evidences in Cabo Frio region [ 11 ] reveal that in some years there are unexpected bottom-up effect that cannot be fully explained by seasonal upwelling.…”

Section: Introductionmentioning

confidence: 99%

Inter-annual cascade effect on marine food web: A benthic pathway lagging nutrient supply to pelagic fish stock

2017

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Currently, spatial and temporal changes in nutrients availability, marine planktonic, and fish communities are best described on a shorter than inter-annual (seasonal) scale, primarily because the simultaneous year-to-year variations in physical, chemical, and biological parameters are very complex. The limited availability of time series datasets furnishing simultaneous evaluations of temperature, nutrients, plankton, and fish have limited our ability to describe and to predict variability related to short-term process, as species-specific phenology and environmental seasonality. In the present study, we combine a computational time series analysis on a 15-year (1995–2009) weekly-sampled time series (high-resolution long-term time series, 780 weeks) with an Autoregressive Distributed Lag Model to track non-seasonal changes in 10 potentially related parameters: sea surface temperature, nutrient concentrations (NO2, NO3, NH4 and PO4), phytoplankton biomass (as in situ chlorophyll a biomass), meroplankton (barnacle and mussel larvae), and fish abundance (Mugil liza and Caranx latus). Our data demonstrate for the first time that highly intense and frequent upwelling years initiate a huge energy flux that is not fully transmitted through classical size-structured food web by bottom-up stimulus but through additional ontogenetic steps. A delayed inter-annual sequential effect from phytoplankton up to top predators as carnivorous fishes is expected if most of energy is trapped into benthic filter feeding organisms and their larval forms. These sequential events can explain major changes in ecosystem food web that were not predicted in previous short-term models.

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Section: Introductionmentioning

confidence: 99%

Inter-annual cascade effect on marine food web: A benthic pathway lagging nutrient supply to pelagic fish stock

2017

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“…However, unequivocal quantification of food linkages is especially difficult in the case of omnivory, which is common in marine systems (Pimm et al 1991).The use of the isotopic method needs to move beyond integrating or averaging feeding habits over longer time scales, and additional analysis methods are needed for determining food preferences. In this TS, Soares et al (2014) and Corbisier et al (2014) exemplify the state of the art in the use of the stable isotopes to delineate ecosystem processes off the Brazilian coast. Both studies explore the application of the isotope method for disentangling ecosystem functions such as biophysical processes related to upwelling and bentho-pelagic coupling.…”

Section: Novel Approachesmentioning

confidence: 99%

“…Other tracers can also be used for the determination of trophodynamic linkages: Pethybridge et al (2014) analysed the fingerprint of fatty acids for small pelagics and their planktonic prey in the NW Mediterranean, showing the strong potential of this method for delineating food preferences. Conversely, Muto et al (2014) showed that mercury biomagnification can be used to trace trophic positions in species of the northern Brazilian continental shelf. As an example of how to integrate such information, Prato et al (2014) built a food web model of the NW Mediterranean using field-derived information.…”

Section: Novel Approachesmentioning

confidence: 99%

Trophodynamics in marine ecology: 70 years after Lindeman

Libralato¹,

Pranovi²,

Στεργίου³

et al. 2014

Mar. Ecol. Prog. Ser.

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The seminal work of Lindeman (1942), 'The trophic-dynamic aspect of ecology' (Ecology 23:399), has been an important starting point for the holistic view of ecosystem trophodynamics, but it was initially seldom applied to marine ecosystems. Over the past 70 years, research on marine trophodynamics has become more widespread, producing a variety of analytical methods, and increasing our understanding of marine ecosystem functioning. Yet difficulties remain in transforming this body of knowledge into operational management of marine ecosystems and marine resources. This Theme Section on 'Trophodynamics in marine ecology' documents recent advances and lessons learned over the past 70 years, and provides an opportunity to reflect on future directions for marine research.

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“…Variações temporais e/ou sazonais nas teias tróficas de diferentes ecossistemas também podem ser detectadas com base nos valores de isótopos estáveis de suas espécies (e.g. Faye et al, 2011;Chouvelon et al, 2012;Soares et al, 2014).…”

Section: Introductionunclassified

“…Foram desenvolvidos trabalhos na plataforma continental de Ubatuba (SP) (Matsuura & Wada, 1994;Soares et al, 2002;Corbisier, 2006;Corbisier et al, 2006) e de Cabo Frio (RJ) (Corbisier, 2006;Corbisier et al, 2014;Soares et al, 2014); nas baías de Guanabara, Sepetiba e Ilha Grande (RJ) (Bisi et al, 2012); nos sistemas estuarianos de Itamaracá (PE) (Schwamborn et al, 2002), Cananéia (SP) (Nagata et al, 2015) e Mamanguape (PB) (Claudino et al, 2015); no ecossistema de manguezal na Baia de Sepetiba (RJ) (Lacerda et al, 1986); e em sistemas de lagoas costeiras (Aguiaro, 1999;Garcia et al, 2007;Ricevuto et al, 2013). Em estudos de alimentação, foram utilizados por Lacerda et al (1991) para o caranguejo de mangue Aratus pisoni, por Mantelatto et al (2002) (Amaral et al, 2015a).…”

Section: Introductionunclassified

Interações tróficas dos peixes e lulas da Baía do Araçá, município de São Sebastião (São Paulo, Brasil): uma abordagem pelo uso de isótopos estáveis

Pucci¹

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Ccor (‰) e δ N (‰) dos peixes e lulas e variabilidade temporal 6.2. Composição da dieta e variação de δ 13 Ccor (‰) e δ 15 N (‰) com o tamanho dos peixes 6.3. Posições tróficas e vias tróficas das espécies de peixes e lulas 7. Considerações Finais e Conclusões 8. Referências Bibliográficas Tabelas Figuras Anexos Apêndices iii Resumo As interações tróficas de 31 espécies de peixes e de lulas da Baía do Araçá, São Sebastião (SP), foram investigadas por meio dos isótopos estáveis de carbono (δ 13 C) e nitrogênio (δ 15 N). Os valores de δ 13 C das espécies variaram entre-17,2‰ e-12,1‰, e os de δ 15 N, entre 10,0‰ e 14,5‰. Os valores de δ 13 C dos produtores e consumidores permitiram indicar que as espécies analisadas participam das teias tróficas, pelágica e bentônica, e têm como base da cadeia alimentar o fitoplâncton, os microfitobentos e a matéria orgânica dos sedimentos. Maiores valores de δ 13 C nos peixes e lulas foram registrados no verão, associados a valores mais altos na base. As posições tróficas das espécies variaram entre 3,18 e 4,72, indicando que atuam como consumidores secundários e terciários. A composição da dieta dos peixes, avaliada pelo modelo de mistura isotópica, apontou elevada contribuição de presas como Polychaeta, Tanaidacea e Ophiuroidea, grupos com alta abundância na Baía do Araçá e no Canal de São Sebastião. A ingestão de presas disponíveis no interior da baía e no canal evidenciou a importância desses peixes e lulas como carreadores de nutrientes, realizando tanto acoplamento pelágico-bentônico, como entre as regiões sublitoral e entremarés da Baía do Araçá.

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Seasonal variability of δ13C and δ15N of fish and squid in the Cabo Frio upwelling system of the southwestern Atlantic

Cited by 14 publications

References 56 publications

Inter-annual cascade effect on marine food web: A benthic pathway lagging nutrient supply to pelagic fish stock

Inter-annual cascade effect on marine food web: A benthic pathway lagging nutrient supply to pelagic fish stock

Trophodynamics in marine ecology: 70 years after Lindeman

Interações tróficas dos peixes e lulas da Baía do Araçá, município de São Sebastião (São Paulo, Brasil): uma abordagem pelo uso de isótopos estáveis

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