Hydrodynamic connectivity between two macrotidal Amazonian estuaries

Araújo, Wilton Pires; Nils, E.

doi:10.2112/si65-184.1

Cited by 12 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…<Insert Figure 1> The Taperaçu is a small, funnel-shaped estuary, with a basin of 40 km 2 , of which, 21 km 2 is covered with water surface (Araújo Jr. and Asp 2013). With less than 30 km in length, the mean depth of this estuary is 4 m, and extensive sandbanks run longitudinally along its mid-sector.…”

Section: Study Areamentioning

confidence: 99%

Effects of Extreme Climatic Events on the Hydrological Parameters of the Estuarine Waters of the Amazon Coast

Costa

Pereira

Jiménez

et al. 2022

Estuaries and Coasts

View full text Add to dashboard Cite

Title pageClick here to view linked References This study was financed by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), through a Universal project (483913/2012-0), and by CAPES (Ciências do Mar II -88882.158649/2014-01). The authors Pereira LCC (309491/2018-5) and Costa RM (311782/2017-5) would also like to thank CNPq for research grants, and Costa AK and is grateful to Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for research grants. We are also indebted to Stephen Ferrari for his careful revision of the English.

show abstract

Section: Study Areamentioning

confidence: 99%

Effects of Extreme Climatic Events on the Hydrological Parameters of the Estuarine Waters of the Amazon Coast

Costa

Pereira

Jiménez

et al. 2022

Estuaries and Coasts

View full text Add to dashboard Cite

show abstract

“…These two estuaries are connected by the Taici creek ( Fig. 1), through which water flows from the Caeté to the upper Taperaçu during the flood tide (Araújo and Asp 2013). This may have contributed to the recruitment of copepods, such as P. marshi and Pseudodiaptomus richardi (Dahl F., 1894), from the oligomesohaline Caeté estuary (Magalhães unpub.…”

Section: Discussionmentioning

confidence: 99%

Relationships between copepod community structure, rainfall regimes, and hydrological variables in a tropical mangrove estuary (Amazon coast, Brazil)

2015

View full text Add to dashboard Cite

The influence of rainfall and hydrological variables on the abundance and diversity of the copepod community was investigated on a monthly basis over an annual cycle in the Taperaçu mangrove estuary. In general, the results show that there were no clear spatial or tidal patterns in any biological variables during the study period, which was related to the reduced horizontal gradient in abiotic parameters, determined mainly by the morphological and morphodynamic features of the estuary. Nevertheless, seasonal and monthly trends were recorded in both the hydrological data and the abundance of the dominant copepod species. In particular, Pseudodiaptomus marshi (6,004.6 ± 22,231.6 ind m -3 ; F = 5.0, p \ 0.05) and Acartia tonsa (905.6 ± 2,400.9 ind m -3 ; F = 14.6, p \ 0.001) predominated during the rainy season, whereas Acartia lilljeborgii (750.8 ± 808.3 ind m -3 ; U = 413.0, p \ 0.01) was the most abundant species in the dry season. A distinct process of succession was observed in the relative abundance of these species, driven by the shift in the rainfall regime, which affected hydrological, in particular salinity, and consequently the abundance of copepod species. We suggest that this may be a general pattern governing the dynamics of copepod populations in the estuaries of the Brazilian Amazonian region.

show abstract

“…A Zona Bragantina está inserida na Zona Costeira Amazônica que é caracterizada pelo recorte dos 23 estuários que adentram em direção a costa por mais de 100 km. Esses estuários podem estar interconectados a seus estuários limítrofes através de canais de maré, implicando em padrões de circulação de maré relacionados ao complexo e alterações nos parâmetros físico-químicos e sedimentológicos devido ao intercâmbio das águas, sedimentos e organismos entre estes estuários (Araújo & Asp, 2013). Esse tipo de característica complexa dos estuários amazônicos, nos quais a proximidade e a grande variação de maré permitem a interconexão dos estuários, os diferenciam do padrão da maioria dos estuários brasileiros e tornam o estudo desta região ainda mais interessante.…”

Section: Introductionunclassified

“…Araújo e Asp, 2013). O fluxo do canal do Taici corre no sentido do Caeté para o Taperaçu apenas durante o início das marés de enchente, porém esse fluxo é importante do ponto de vista do transporte de lama, sal e aspectos…”

unclassified

Histórico da introdução de matéria orgânica no estuário amazônico do Caeté, Pará

Corrêa¹

View full text Add to dashboard Cite

This investigation aimed to observe the variability and predominance of different organic matter sources: biosynthetic, diagenetic, petrogenic and pyrolytic in an Amazonic region, considered the largest tropical forest with the greatest biodiversity reservoir. An evaluation of the possible anthropic or natural alterations using a multiple proxies approach (elementary ratios and stable isotopes of carbon and nitrogen, aliphatic and aromatic hydrocarbons) was observed in two sedimentary cores collected at Bragantina Zone, one of the most impacted deforestation areas of Amazon. The sedimentary organic matter sources indicated the predominance of terrigenous sources. However, the variability of studied parameters exhibited either an anthropogenic or/and natural variation. Between 1932 and 1979, COT and NT data showed an organic matter increase that was related to terrigenous plants sources (C / N, δ 13 C, δ 15 N). The HAs were associated with higher plants increase and HPAs indicated combustion sources coming from the deforestation on the region during the Amazon rubber booms and the agriculture soil preparation. HPAs were related to organic matters sources due to biosynthesis and recent diagenetic of terrigenous organic matter.

show abstract

Hydrodynamic connectivity between two macrotidal Amazonian estuaries

Cited by 12 publications

References 13 publications

Effects of Extreme Climatic Events on the Hydrological Parameters of the Estuarine Waters of the Amazon Coast

Effects of Extreme Climatic Events on the Hydrological Parameters of the Estuarine Waters of the Amazon Coast

Relationships between copepod community structure, rainfall regimes, and hydrological variables in a tropical mangrove estuary (Amazon coast, Brazil)

Histórico da introdução de matéria orgânica no estuário amazônico do Caeté, Pará

Contact Info

Product

Resources

About