Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Igor Charles Castor Alves is active.

Publication


Featured researches published by Igor Charles Castor Alves.


The Holocene | 2016

Millennial to secular time-scale impacts of climate and sea-level changes on mangroves from the Doce River delta, Southeastern Brazil

Marlon Carlos França; Igor Charles Castor Alves; Marcelo Cl Cohen; Dilce de Fátima Rossetti; Luiz Cr Pessenda; Paulo Cf Giannini; Flávio Lima Lorente; Antonio Alvaro Buso Junior; José Albertino Bendassolli; Kita Macario

This work integrates geomorphological, sedimentological, and palynological data with radiocarbon dating, as well as δ13C, δ15N, and C/N from sedimentary organic matter to provide a model of mangrove dynamics during the evolution of a wave-dominated delta in Southeastern Brazil. Mangrove dynamics are analyzed within the context of millennial and secular climatic and sea-level changes. Tidal flats, positioned at highest limit of the intertidal zone along the edge of a lagoon sheltered by beach ridges, were occupied by wetlands represented by mangrove and herbaceous vegetation during the mid-Holocene high sea level. After considering the relative sea-level fall and relatively higher fluvial sediment discharge, during the last ~6350 years, progradation took place along this shoreline, resulting in extensive beach ridge deposits that overlie transgressive muds. This process led to loss of mangrove area. Similar dynamics were repeated at ~3043 cal. yr BP, although in a relatively more distal (i.e. seaward) position. Between ~1337 and ~900 cal. yr BP, a tidal flat attached to the edge of a lagoon near the modern coastline was colonized by herbaceous vegetation (C4 plants). The next phase, which occurred between ~900 and ~400 or ~100 cal. yr BP, is marked by the transition from herbaceous to mangrove tidal flats with an increased trend of terrestrial organic matter. During the recent centuries, a mangrove vegetation became established, and there was an increased trend of estuarine-derived organic matter. This mangrove phase, recorded during the last century(ies), may be due to a relative sea-level rise. Under this scenario, erosion of beach ridges and expansion of lagoons and mangroves are expected along the littoral of the State of Espírito Santo in Southeastern Brazil.


Mercator | 2015

DINÂMICA SAZONAL DE NUTRIENTES EM ESTUÁRIO AMAZÔNICO

Sury de Moura Monteiro; Maâmar El-Robrini; Igor Charles Castor Alves

Este artigo mostra a distribuicao dos nutrientes no estuario do rio Paracauari, durante um ciclo hidrologico amazonico (2008), e no final do periodo de La Nina (abril de 2008). Esse estuario e influenciado por clima tropical umido e meso-mares (3 a 4m), semi-diurna. A amostragem foi realizada em 10 estacoes em tres periodos sazonais distintos: chuvoso (marco), intermediario (junho) e menos chuvoso (setembro). Medimos “in situ” os parâmetros fisico-quimicos utilizando uma sonda multiparâmetro; analisamos os nutrientes dissolvidos (nitrato, nitrito, n-amoniacal, fosfato e silicato) por espectofotometria e o material particulado em suspensao por gravimetria. Observamos amplas variacoes sazonais nas concentracoes dos parâmetros estudados. A temperatura da agua (media de 28,58 oC) e bastante homogenea, tipica das aguas tropicais. O pH variou de acido (5,80) a alcalino (7,86) e a salinidade entre 0,06 a 7,56 ambos com valores maximos na foz, devido a maior influencia marinha. As aguas sao mal oxigenadas no periodo chuvoso (2,35 mg.L-1) e bem no menos chuvoso (6,55 mg.L-1). As concentracoes de material particulado em suspensao e de nutrientes foram maximas no periodo chuvoso devido ao aporte natural proveniente das areas adjacentes.


Earth Surface Processes and Landforms | 2018

Allogenic and autogenic effects on mangrove dynamics from the Ceará Mirim River, north-eastern Brazil, during the middle and late Holocene: Allogenic and autogenic effects on mangrove dynamics

Samuel Rodrigues Ribeiro; Edson José Louzada Batista; Marcelo Cancela Lisboa Cohen; Marlon Carlos França; Luiz Carlos Ruiz Pessenda; Neuza Araújo Fontes; Igor Charles Castor Alves; José Albertino Bendassolli

been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/esp.4342 This article is protected by copyright. All rights reserved. Allogenic and autogenic effects on mangrove dynamics from the Ceará Mirim River, Northeastern Brazil, during the middle and late Holocene


Acta Amazonica | 2012

Qualidade das águas superficiais e avaliação do estado trófico do Rio Arari (Ilha de Marajó, norte do Brasil)

Igor Charles Castor Alves; Maâmar El-Robrini; Maria de Lourdes Souza Santos; Sury de Moura Monteiro; Leandro Patrick Ferreira Barbosa; José Tasso Felix Guimarães


Catena | 2015

A multi-proxy evidence for the transition from estuarine mangroves to deltaic freshwater marshes, Southeastern Brazil, due to climatic and sea-level changes during the late Holocene

Marlon Carlos França; Igor Charles Castor Alves; Darciléa F. Castro; Marcelo Cancela Lisboa Cohen; Dilce de Fátima Rossetti; Luiz Carlos Ruiz Pessenda; Flávio Lima Lorente; Neuza Araújo Fontes; Antonio Alvaro Buso Junior; Paulo César Fonseca Giannini; Mariah I. Francisquini


Vegetation History and Archaeobotany | 2013

An integrated approach to relate Holocene climatic, hydrological, morphological and vegetation changes in the southeastern Amazon region

José Tasso Felix Guimarães; Marcelo Cancela Lisboa Cohen; Marlon Carlos França; Igor Charles Castor Alves; Clarisse Beltrão Smith; Luiz Carlos Ruiz Pessenda; Hermann Behling


Catena | 2015

Relative sea-level and climatic changes in the Amazon littoral during the last 500 years

Marcelo Cancela Lisboa Cohen; Igor Charles Castor Alves; Marlon Carlos França; Luiz Carlos Ruiz Pessenda; Dilce de Fátima Rossetti


Revista de Gestão Costeira Integrada - Journal of Integrated Coastal Zone Management | 2010

Avaliação das Formas de Fósforo nos Sedimentos Superficiais da Plataforma Continental do Rio Amazonas

Maria de Lourdes Souza Santos; André Luis de Lima Saraiva; Ismaily Bastos Delfino; Leny da Conceição Antunes; Rosa Maria Matos Batista; Igor Charles Castor Alves


Scientia Plena | 2015

Análise temporal da composição granulométrica de um estuário amazônico, Pará, Brasil

Mauricio Willians de Lima; Maria de Lourdes Souza Santos; Djair de Jesus Montelo; Danielle Moura Nunes; Igor Charles Castor Alves; Melissa do Socorro Fonseca da Silva


Boletim Técnico Científico do Cepnor / Tropical Journal of Fisheries and Aquatic Sciences | 2013

Influência Da Expansão Urbana Na Qualidade Da Água Em Reservatório Da Região Amazônica (Belém, Pará)

Maria de Lourdes Souza Santos; Adriana Oliveira Bordalo; José Almir Rodrigues Pereira; Pedro Chira; Igor Charles Castor Alves; Silvana Socorro Veloso Sodré

Collaboration


Dive into the Igor Charles Castor Alves's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Dilce de Fátima Rossetti

National Institute for Space Research

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Maâmar El-Robrini

Federal University of Pará

View shared research outputs
Researchain Logo
Decentralizing Knowledge