Riguel Feltrin ContenteInstituto Federal de Educação, Ciência e Tecnologia do Pará | IFPA · Campus Marabá Industrial
Riguel Feltrin Contente
PhD
About
34
Publications
10,807
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
382
Citations
Introduction
I am interest in Ecology, Biostatistics and Environmental Sciences. Ecology and environmental monitoring, having fish as a model, are my core areas of academic and applied research. As a scientist, I have experience in multivariate analysis; development and application of sampling protocols and designs; environmental monitoring; environmental impact studies; elaboration of taxonomic identification guides; trophic ecology; natural history of Atlantic forest fish; and historical ecology.
Additional affiliations
November 2015 - November 2015
Position
- PostDoc Position
Description
- Application of ANOVA and GLM in Marine Ecology
August 2014 - March 2016
February 2009 - August 2013
Instituto Oceanográfico, Universidade de São Paulo (IO-USP)
Position
- PhD Student
Publications
Publications (34)
The construction of dams causes changes in river variables, as a result of direct changes in their hydrological and biogeochemical cycles. One of the most notable changes is the flow regulation, which reduces seasonal events and the hydrostatic pressure exerted by freshwater, increasing the saltwater wedge intrusion
into the system. Changing the s...
We characterized the surf-zone fish assemblage structure of an ocean beach on the central coast of Brazil (Guriri Beach, Espírito Santo) and assessed its diel variability. Like the entire Espírito Santo coast, Guriri Beach was also affected by ore tailings from the Fundão dam, which collapsed on November 5, 2015. Monthly samplings were carried out...
Quarterly collections of demersal fish were conducted between 2014 and 2018 on the adjacent continental shelf and in the Paranaguá Estuarine Complex (PEC). Univariate and multivariate statistical analyses were used to determine the abundance, richness, and composition of demersal fish assemblages and to list predictor variables responsible for the...
The variability of fish assemblage structure with respect to seasonality in salinity and productivity remains to be elucidate to many Neotropical estuaries. In this study, we hypothesized that salinity gradient and a set of variables related to ecosystem productivity drive community parameters in the shallow-water fish assemblage of the north-south...
In order to investigate spatiotemporal co-occurrence patterns of demersal fishes from the Paranaguá Estuarine Complex (PEC) and the adjacent continental shelf, state of Paraná, Southern Brazil, fish from nine sampling sites within the estuary and three additional sites in open sea (N = 12 sampling sites) were sampled at quarterly intervals between...
The channel of the Valo Grande (VG) in the Ribeira de Iguape River (São Paulo State, Brazil), inaugurated in 1852, is one of the largest environmental disasters in the Brazilian coast. This article presents a synthesis of the historical, ecological, geographic and sociopolitical dimensions involving the VG. The VG has promoted the ecosystem disrupt...
Inaugurado em 1852, o canal artificial do Valo Grande (VG), no rio Ribeira de Iguape (SP), configura-se como um dos maiores desastres ambientais da costa brasileira. Este artigo apresenta uma síntese sobre o tema, abordando suas dimensões histórica, ecológica, geográfica e sociopolítica. O VG tem causado a desestruturação do ecossistema e a reconfi...
We investigated the combined use of cast net (CN), otter trawl (OT), and encircling gill net (EG) to characterize the richness, composition, and abundance of species and functional groups of the subtidal fish assemblage in a subtropical shallow ecosystem in Brazil. Our hypothesis, that this combination would improve faunal characterization, was sup...
Although beach seines and cast nets are widely used to sample fishes in coastal marginal habitats, a comparison between such gears at determining fish fauna structure of tidal flats during high water is lacking. Here we compared the effectiveness of a multifilament beach seine and a monofilament cast net for sampling the intertidal fish assemblage...
Comprehensive species checklists are essential to effectively implementing preservation and recovery measures, and should assess conservation status, vulnerability degree and anthropogenic threats. This checklist was compiled from fish species recorded in surveys conducted over the last 30 years in the shallow inner continental shelf in the State o...
A model-oriented research project can organize and systematize high quality sampling information and convert observed values into information needed to parameterize ecological models. In this paper, we describe the value parameterization process from an interdisciplinary project to the development of a food web model (using Ecopath) in order to com...
Human activities severely threaten biological communities in Neotropical estuaries. Nevertheless, these communities have been poorly studied in comparison to low biodiversity regions, despite the fact that conservation efforts in these habitats are expected to require longer time-scales and greater efforts. In the present study we simulated resourc...
The use of multiple sampling gears is indispensible to obtain robust characterizations of fish assemblage structure in species-rich subtropical ecosystems. In this study, such a dependence was demonstrated by characterizing the structure of the high-tide fish assemblage in a subtropical tidal flat ecosystem (the Araçá Bay, southeastern Brazil) usin...
This paper presents for the first time a checklist of the fish fauna of Araça Bay, São Sebastião Channel, northern coast of São Paulo state, Brazil. Fishes were sampled in five surveys from October 2012 to February 2014 using nine different types of sampling gear during high tide. Tide pool fishes were also sampled in four surveys from March to Oct...
The aim of the present thesis is to identify and describe spatial, seasonal, and
multidecadal variations, by using historical data, and local ecological patterns in the fish fauna of the Cananéia-Iguape Estuary (ECI) in relation to ecological factors and/or factors derived from the exogenous discharge of the Ribeira de Iguape River (RI) flowing thr...
We provide an overall description of the species composition and abundance of pelagic fish assemblages sampled with midwater trawls at depths <100 m in the southeastern Brazilian Bight (SBB, south-southeastern Brazil) during the spring–summer period from 1995 through 2010. We also investigated the effect of 1) 3 water masses, the South Atlantic Cen...
This work reports the second record of the Indo-Paciic invasive mud sleeper, Butis koilomatodon, for coastal
São Paulo in southeastern Brazil, and represents the southernmost record for this species in the southwestern
Atlantic Ocean. The risks of a potential invasion mediated by anthropogenic impacts on the area of occurrence
are also discussed.
We present a protocol for measuring spatial variables in large (>50 m2) soft-sediment tide pool. Secondarily, we present the fish capture efficiency of a sampling protocol that based on such spatial variables to calculate relative abundances. The area of the pool is estimated by summing areas of basic geometric forms; the depth, by taken representa...
We report, for the first time, the occurrence of the muzzled blenny,
Omobranchus punctatus
, on the coast of São Paulo, South-Eastern Brazil, partially filling a record gap within the species’ expected distribution in Brazil. One individual was found on 16 June 2014 in a sand-bottom tide pool of a tidal flat ecosystem, adjacent to the port of São S...
Here we test the effects of the east-west salinity gradient in the subtropical Paranaguá Bay Estuarine Complex (PEC) on the structure of shallow water fish fauna, determined according to taxonomic (families and species) and functional composition metrics. A total of 152 species were observed. The families with the largest number of species were the...
Biota Neotropica is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal's aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical reg...
The feeding ecology of the American freshwater goby Ctenogobius shufeldti in a low salinity salt-marsh habitat in the Paranaguá Bay estuarine complex (Brazil) was assessed through the gut analysis of 632 individuals. The effects of a set of abiotic factors (type of sediment, salinity, temperature and estuarine reach), season and body size on dietar...
Desproteger os ambientes e os povos costeiros: mais uma 'função' do novo código florestal, artigo … 1/3 ecodebate.com.br/…/desproteger-os-ambientes-e-os-povos-costeiros-mais-uma-funcao-do-novo-… Desproteger os ambientes e os povos costeiros: mais uma 'função' do novo código florestal, artigo de Riguel F. Contente e Diego Martinez Pu blica do em ju...
We described the fish assemblage in the estuary of the Guaraguaçu River (one of the largest tributaries of the Paranaguá Bay
Estuary, located within Brazil’s Atlantic Forest Biosphere Reserve) from June 2005 to May 2006, and assessed the seasonal
and spatial effects of abiotic environmental attributes on the fish assemblage structure. Despite some...
The feeding ecology of the Brazilian silverside, Atherinella brasiliensis, in a sub-tropical estuary of Brazil was investigated through the gut analysis of 1431 individuals. We described dietary composition and analysed seasonal, estuarine habitat, and body size variations in the diet; trophic level; feeding diversity; and gut fullness indices. Res...
Size-related and seasonal evaluation of the dietary composition of fat snook (Centropomus parallelus Poey 1860) in the upper sector of an estuary of the southeastern coast of Brazil were carried out based on stomach analyses of specimens ranging from 40 to 170 mm standard length. Results reveal that C. parallelus is a carnivorous species feeding ma...
Size-related changes in the diet of the slipper sole Trinectes paulistanus juveniles were described based on the stomach content analysis of 105 specimens (9 - 55 mm standard length) collected in an oligohaline habitat of the Paranaguá Bay estuarine complex (southern Brazil). From multivariate analyses, an ontogenetic diet shift was detected at abo...
Orientador : Prof. Dr. Henry Louis Spach Dissertaçăo (mestrado) - Universidade Federal do Paraná, Setor de Cięncias Biológicas, Programa de Pós-Graduaçăo em Zoologia. Defesa: Curitiba, 2008 Inclui bibliografia Area de concentraçăo: Zoologia
Questions
Questions (2)
I want to estimate the asymptotic richness derived from the relationship between the number of sampling survey and the resulting number of fish species. I used the function rrssoptim (R package) to fit our data to the asymtoptic models (weibull, monod, logistic, lomolino, negexpo). I am interested in the asymptotic richness. According to AiCc, the best model is the weibull (-38.48772), but the c (asymptote) was not significant and its CI95% band was very wide! On the other hand, the asymptote of models negexpo and monod were significant and the CI band was substantially narrower. My question is: should I choose the model with lower CI for the c or should I choose that with lowest AIC?
I would like to know if the following analysis strategy is correct conceptually, if it makes sense. I found difference in fish assemblage structure between two estuarine sectors, through PERMANOVA. I would like to identify what environmental factors are associated with this difference. Then, I used DISTLM (Distance‐based linear modelling) utilising information criteria to find the best model of variables related to the multivariate data cloud. I then run a canonical analysis of principal coordinates (CAP) to find axes maximizing this spatial differences with linear combinations of variables from the best DISTLM model. I'm not so sure if I can use these variables from DISTLM in the CAP. If not, can anyone suggest an alternative analysis strategy?
