Erica Caramaschi - Profile on Academia.edu (original) (raw)

Papers by Erica Caramaschi

Foto da Capa e Contracapa: Romulo Campos CIP-Brasil. Catalogação-na-Fonte Sindicato Nacional dos ... more Foto da Capa e Contracapa: Romulo Campos CIP-Brasil. Catalogação-na-Fonte Sindicato Nacional dos Editores de Livros, RJ É proibida a reprodução total ou parcial, por quaisquer meios, sem autorização por escrito da editora.

Este livro representa uma exploração profunda e fascinante da biologia da conservação, campo acad... more Este livro representa uma exploração profunda e fascinante da biologia da conservação, campo acadêmico que surgiu em resposta à crescente crise da biodiversidade. Ele combina diversas disciplinas, incluindo ecologia, genética, fisiologia e gestão ambiental para enfrentar os desafios únicos da conservação de uma espécie aquática endêmica ancestral. O livro destaca as espécies endêmicas Isoëtes cangae e Isoëtes serracarajensis, ambas descobertas nos campos rupestres ferruginosos da Floresta Nacional de Carajás. Os lagos aqui abordados são rasos, mas biodiversos, e apresentam características oligotróficas, o que é incomum e, por isso, é habitat de I. cangae. A distribuição limitada de I. cangae a torna uma espécie muito interessante do ponto de vista ecológico e botânico, motivando uma parceria entre o Instituto de Biodiversidade e Sustentabilidade (NUPEM–UFRJ), o Instituto Tecnológico Vale (ITVDS) e a Vale S.A. para conservá-la. O livro discute a abordagem interdisciplinar necessária ...

Resource use by the facultative lepidophage Roeboides affinis (Günther, 1868): a comparison of size classes, seasons and environment types related to impoundment

Neotropical Ichthyology, Jun 1, 2013

Oecologia Australis, 2008

Os trabalhos de Lindeman (1942), seguidos pelos trabalhos de Odum (1956, 1957), desperteam o inte... more Os trabalhos de Lindeman (1942), seguidos pelos trabalhos de Odum (1956, 1957), desperteam o interesse de ecólogos sobre questões a cerca da produção biótica e do fl uxo de energia em sistemas aquáticos. A ecologia energética ocupa-se fundamentalmente da forma como a energia transita no interior do sistema. Ao nível ecossistêmico o fl uxo de energia desenvolve uma série de reações químicas que podem liberar ou absorver calor. Essas funções atuam primeiramente ao nível individual, populacional (Odum & Smalley 1959) e, posteriormente, ecossistêmico (Odum 2001). Odum foi o primeiro a desenvolver uma abordagem para medir o estado de maturidade do sistema que era atingido quando observado incremento de biomassa. Essa avaliação termodinâmica media o estágio de maturidade dos ecossistemas, e verifi cava o desempenho de cada componente, alicerçado ao manejo de populações naturais. A aplicação da teoria de Odum pode ser desenvolvida com análises sobre redes trófi cas que permitem quantifi car o estágio de evolução de um ecossistema, através das propriedades emergentes. A ausência de dados quantitativos (biomassa) englobando todos os organismos do ecossistema junto com a difi culdade de se encontrar ferramentas para o desenvolvimento desses trabalhos tem sido uma das principais difi culdades dessas abordagens. A presente revisão tem como objetivo traçar um histórico da ecologia energética em sistemas aquáticos, enfatizando as principais metodologias utilizadas para verifi car o fl uxo de energia nos sistemas ecológicos. Palavras-chave: Ecologia energética, rios, peixes, teias trófi cas ABSTRACT ENERGY FLOW IN AQUATIC COMMUNITIES, EMPHASIZING LOTIC SYSTEMS. A series of studies by Lindeman and Odum attracted scientifi c attention to the matter of biotic production and energy fl ow in aquatic ecosystems. Energy fl ow ecology fundamentally deals with how energy is transferred in a given system. The fl ow of energy generates a series of chemical reactions which may absorb or release heat, and these heat variations occur at the level of the individual, with subsequent effects over the entire population and ecosystem. Odum was the fi rst author to develop a thermodynamic method to measure the state of maturity reached by a given system following biomass increment. This method was used to evaluate the individual performance of each of the ecosystem's parts based on the natural processes intrinsic to populations. Odum's theory can be further developed by including trophic web analysis, thus allowing assessment of the evolutionary stage of ecosystems based on emergent properties. The greatest obstacles for such an approach is the lack of quantitative data (biomass) that would include all organisms of any given ecosystem and the diffi culty in fi nding useful tools to develop these studies. The objective of the present review is to present an historical account of the energy fl ow ecology in aquatic ecosystems, focusing on the main methodologies employed.

Caracteristicas reprodutivas de hypostomus grupo h. Punctatus no rio ubatiba , marica , rj ( osteichthyes , siluriformes )

Revista Brasileira De Biologia, 1994

Arquivos de Ciências do Mar, Nov 1, 2010

Estudos realizados em lagoas costeiras no âmbito do projeto de Pesquisas de Longa Duração (PELD-s... more Estudos realizados em lagoas costeiras no âmbito do projeto de Pesquisas de Longa Duração (PELD-site 5) tiveram como objetivo a aplicação de variadas metodologias visando propostas para o monitoramento padronizado e contínuo da comunidade de peixes nas lagoas do Parque Nacional da Restinga de Jurubatiba (PNRJ). Para tal, neste estudo foram abordadas metodologias referentes a estratégias de amostragem (habitats, aparelhos de captura de peixes e observação subaquática), comparando parâmetros de riqueza, abundância, biomassa e tamanho dos peixes capturados. O esforço de pesca utilizado com a maioria dos aparelhos em diferentes habitats não foi suficiente para estabilizar as curvas acumuladas das espécies, devido possivelmente às coletas terem sido realizadas durante um único período climático ou mês do ano. Valores de biomassa e comprimento padrão mostraram que os aparelhos de pesca utilizados foram adequados para obter amostras heterogêneas da ictiofauna nos diferentes habitats da lagoa. Assim, levando em consideração tamanhos de redes (comprimento, altura e olho de malha), seu uso por habitat disponível na lagoa e esforço de captura (número de lances ou tempo de exposição) é possível obter dados confiáveis para avaliar aspetos relacionados à dinâmica de populações ou estrutura de comunidades em lagoas costeiras com características similares.

Neotropical Ichthyology, 2017

We explored patterns of phenotypic variation in Hemigrammus coeruleus from the Unini River basin,... more We explored patterns of phenotypic variation in Hemigrammus coeruleus from the Unini River basin, a blackwater river in the Brazilian Amazon. Geometric morphometrics was used to evaluate variation in body shape among populations from four tributaries (UN2-UN5). We found no evidence for sexual dimorphism in body size and shape. However, morphological differences among populations were detected as the analyses recovered significant groups corresponding to each sub-basin, with some overlap among them. The populations from UN2, UN3 and UN5 had more elongate bodies than fish from UN4. The most morphologically divergent population belonged to UN4, the tributary with the most divergent environmental conditions and the only one with seasonally-muddy waters. The morphological variation found among these populations is likely due to phenotypic plasticity or local adaptation, arising as a product of divergent ecological selection pressures among sub-basins. This work constitutes one of the first to employ a population-level geometric morphometric approach to assess phenotypic variation in Amazonian fishes. This method was able to distinguish subtle differences in body morphology, and its use with additional species can bring novel perspectives on the evaluation of general patterns of phenotypic differentiation in the Amazon.

Brazilian Archives of Biology and Technology, 2000

Hypostomus punctatus was collected between June/1987 and July/1988, in three sampling stations wi... more Hypostomus punctatus was collected between June/1987 and July/1988, in three sampling stations with different features, along the Ubatiba stream (Maricá, Rio de Janeiro state). Sampling stations 2 and 3 were more similar (50% similarity) to each other. The species was frequent and persistent in all sampling stations. The size varied from 1.0 to 22.2 cm. The occurrence of different size classes along the stream was probably related to the kind of environment. Young forms prevailed in the total sample and were mainly collected next to the submersed riparian vegetation. Adults occurred just in sampling stations 1 and 2, and were found most often in rapids with rocky bottom, and in pools among submersed branches.

Short-Term Changes in Two Tropical Coastal Lagoons: Effects of Sandbar Openings on Fish Assemblages

Journal of Coastal Research, 2018

ABSTRACT Camara, E.M.; Caramaschi, É.P.; Di Dario, F., and Petry, A.C., 2018. Short-term changes ... more ABSTRACT Camara, E.M.; Caramaschi, É.P.; Di Dario, F., and Petry, A.C., 2018. Short-term changes in two tropical coastal lagoons: Effects of sandbar openings on fish assemblages. Sandbar openings (SBOs) are among the largest possible disturbances in coastal lagoons. This study investigated the mechanisms of the responses of fish assemblages to short-term environmental changes resulting from several SBOs during 1 year in two coastal lagoons in southeastern Brazil. Lagoons were sampled monthly in sites closer to, and more distant from, the sandbars. A principal component analysis summarized limnological differences between periods of contact and isolation from the sea, and site- and lagoon-based variation partitioning and independent redundancy analyses (RDAs) quantified the unique and shared effects of limnology, space, and period on species and groups of species (marine, estuarine, and freshwater). Limnological differences between periods were associated with a higher marine influence during SBOs and an increasingly eutrophic state influenced by the lagoon and days of isolation. Limnology explained most of the variance in composition and abundance of species, and large fractions were shared with, or explained exclusively by, lagoons and distance of sites from the sandbar. The responses of groups of species were less evident in lagoon-based analyses and more associated with trophic state, most likely because of the short intervals between SBOs, which reduced temporal differences in the marine influence. Responses at the group level were more relevant in site-based analyses, given the predominance of species based on their tolerances or affinities in sites with different salinities. Therefore, the responses of groups of species to limnological changes associated with the features of lagoons and sites (e.g., morphometry, human impacts, and freshwater inflow) determined the effects of SBOs on the fish assemblages.

Brazilian Archives of Biology and Technology, Jun 1, 2003

Observations on the reproductive biology of female Hypostomus luetkeni Lacepede 1803

Ecology of Freshwater Fish, Mar 1, 1997

— Seasonal observations in the gonadosomatic index and development stages of female ovaries showe... more — Seasonal observations in the gonadosomatic index and development stages of female ovaries showed that Hypostomus luetkeni has an extended spawning period lasting from September to February. Histological examinations and analysis of oocyte size distributions indicated a fractional spawning. Fecundity was determined in ripe ovaries and indicated that H. luetkeni, as most other Loricariidae, spawn a small number (446‐936 eggs‐ind−1) of large eggs (5.2 mm).

Population responses of two omnivorous fish species to impoundment of a Brazilian tropical river

Hydrobiologia, Feb 26, 2009

Brycon gouldingi and B. falcatus were the most abundant and widespread of five species of the gen... more Brycon gouldingi and B. falcatus were the most abundant and widespread of five species of the genus captured in a sampling study encompassing 5 years (1995–2000) in the upper Rio Tocantins, where the river was impounded by the Serra da Mesa hydroelectric dam. Given that impoundments constitute a disturbance to which species will show demographic and biological responses, we assessed such

Brazilian Archives of Biology and Technology, Mar 1, 2003

Aquatic Biology, May 2, 2019

This work aims to analyze reproductive attributes of the species Neoplecostomus microps (Steindac... more This work aims to analyze reproductive attributes of the species Neoplecostomus microps (Steindachner, 1877), a well-known species of the catfish family Loricariidae but little contemplated in ecological studies. We describe the reproductive behavior of the species and compare the patterns identified in 2 different basins. The specimens (117 males and 102 females), collected in the Macaé River, did not present a bias in sex ratio during the year. In the largest length classes, males predominated and attained earlier maturity than females. The length-weight relationship showed positive allometric growth for both sexes. The variation of the gonadosomatic index and frequency of maturation stages indicated a reproductive period of 4 to 6 mo, starting in September and reaching a peak in November. The mean absolute fecundity was 43.83 (SD = 7.62) oocytes, ranging from 32 to 55 oocytes. The frequency distribution of oocyte diameter of mature ovaries revealed 3 clutches, suggesting batch spawning. A prolonged reproductive period, low fecundity, large eggs, possible parental care, and repeated spawns recorded for N. microps suggest a strategy that maximizes parental fitness. The population structure and reproductive characteristics of this species indicate a tendency toward equilibrium. The early maturation in females in the Macaé River population may favor a more rapid replacement of juveniles in the population as a response to the unstable environmental conditions that the population experiences in the rainy season.

Alimentacao de Hypostomus emarginatus (Teleostei, Loricariidae) no alto rio Tocantins antes e apos o represamento pela uhe Serra da Mesa, GO

Biociencias (Porto Alegre), 2003

Oecologia Australis, Oct 1, 2008

utilizando assembléias de peixes de água doce, tem sido uma ferramenta efetiva de biomonitorament... more utilizando assembléias de peixes de água doce, tem sido uma ferramenta efetiva de biomonitoramento amplamente utilizada em países de regiões temperadas. Em países tropicais e subtropicais, no entanto, seu uso é ainda reduzido, apesar da adaptação nestas regiões ter se iniciado há quase 15 anos. Esta revisão inclui 15 adaptações do IIB publicadas para essas regiões. Verifi camos que a maioria delas foi realizada em zonas subtropicais, principalmente em riachos; algumas em rios de maior porte e apenas uma em lagos. Tornou-se evidente a necessidade de uma defi nição clara do local de referência e implementação de metodologias padronizadas e não seletivas (e.g. pesca elétrica), inclusive para rios de grande porte. As métricas foram criadas ou adaptadas usando as famílias ou grupos funcionais que se mostraram sensíveis na região estudada. No entanto, é fundamental que a seleção seja respaldada por métodos estatísticos rigorosos. Apesar do modelo do IIB ter se mostrado efetivo na detecção de alterações ambientais em todos os trabalhos analisados, é evidente que a aplicabilidade e efi cácia nos países tropicais e subtropicais (em geral em desenvolvimento, com grande diversidade e complexidade ecológica) depende do preenchimento das lacunas de informação, tanto sobre diversidade como sobre processos ecológicos. Ressalta-se a importância da participação e coordenação governamental na implantação do biomonitoramento nessas regiões, uma vez que as iniciativas, até o momento, partiram exclusivamente de grupos de pesquisa. Palavras-chave: IIB, índices multimétricos, biomonitoramento, peixes de água doce. ABSTRACT BIOTIC INTEGRITY INDEX USING FRESHWATER FISHES IN TROPICAL AND SUBTROPICAL REGIONS. The Index of Biotic Integrity (IBI) using freshwater fi sh assemblages is an effective biomonitoring tool that is widely used in temperate countries. Despite the fact that the IBI is being adjusted to be applied to studies in tropical and subtropical countries for almost 15 years, it still is rarely used with these regions. The present review visits 15 publications of IBI adaptations for tropical regions. Most studies were performed in subtropical regions and mainly on streams, while some were done in large rivers, and one in lakes. There is evident need for a clear defi nition of the reference condition and for standardized and non-selective methodologies (e.g., electrofi shing), even in large river systems. Metrics were created or adapted using families or functional groups that proved sensitive in the studied regions. However, the metrics must be selected through rigorous statistical methods. Although IBI fi sh models were shown to be effective in detecting environmental changes in all studies analyzed, it is evident that the applicability and effectiveness of these models in tropical and subtropical countries (chiefl y developing countries with high diversity and ecological complexity) depend on fi lling in the informationgaps in diversity and ecological processes. We highlight the importance of government taking part in the coordination of biomonitoring programs within these regions, noting that all the initiatives developed up to now were carried out by research groups.

Feeding Ecology of Leporinus friderici (Teleostei; Anostomidae) in the Upper Tocantins River, Central Brazil, before and after Installation of a Hydroelectric Plant

Studies on Neotropical Fauna and Environment, Feb 1, 2003

The feeding ecology of Leporinus friderici Bloch, 1794 was investigated in the upper Tocantins Ri... more The feeding ecology of Leporinus friderici Bloch, 1794 was investigated in the upper Tocantins River, before and after its impoundment by the Serra da Mesa Hydroelectric Dam. Leporinus friderici was classified as an euryphagic, omnivorous species. Allochtonous ...

Verhandlungen, Jun 1, 1998

Iheringia Serie Zoologia, Jun 1, 2008

Ecology of two species of Pachyurus (Perciformes, Sciaenidae) from the Tocantins River, in the re... more Ecology of two species of Pachyurus (Perciformes, Sciaenidae) from the Tocantins River, in the region impounded by the Serra da Mesa hydroelectric dam, Goiás. Pachyurus schomburgkii Günther, 1860 and P. paucirastrus Aguilera, 1983 occur in the Tocantins-Araguaia basin, where the latter is endemic. The species were found in the upper Tocantins, in the region where it was impounded by the Serra da Mesa hydroelectric dam. Fourteen sites were sampled but both species were restricted to two sites (FU and PG) located downstream from the dam. Fishes were bimonthly captured from December 1995 to December 2002 with standardized gillnets. We present data on the distribution, diet, physiological condition and the reproductive status of these species, and focus on the alterations related to the impoundment. Most specimens were adult, and the number of reproductive individuals decreased after damming. Species were classified as benthic invertivores, feeding mainly on immature insects. Niche breadth was significantly higher to P. paucirastrus, and, for both species, during the pre-impoundment phase. Interspecific diet overlap was high; however, resource partitioning was more pronounced in the site immediately downstream from the dam (FU) than partitioning in the more distant site (PG). Values relative to the condition factor indicated that P. schomburgkii must have profited more effectively from the available resources after the environmental changes than P. paucirastrus. Thus, factors related to feeding might have contributed to the disappearance of this species after the beginning of power plant operation. Pachyurus schomburgkii seems to have had a better adjustment to changes, and was more persistent in the area after the damming; however, it remained restricted to the more distant site, where it had been occasionally captured until it was no longer found, approximately four years after dam closure. Considering that many impoundments are planned to the rio Tocantins, we recommend further studies about P. paucirastrus in other stretches of the basin, in order to evaluate the conservation status of this species.

Early development and allometric growth patterns of the grumatã (Prochilodus vimboidesKner, 1859)

Zygote, Jul 22, 2015

The objective of this study was to characterize the early development and allometric growth of th... more The objective of this study was to characterize the early development and allometric growth of the grumatã (Prochilodus vimboides). We describe a sample of 266 eggs and larvae obtained through induced spawning. The eggs were spherical (mean 3.7 mm diameter), exhibited a yellow yolk and were non-adhesive and pelagic after fertilization and hydration. The time elapsed between the early cleavage and post-flexion stages was considered short (328 hours, 8054 hour-degrees) in regard to the development times of other Neotropical rheophilic species, but time to hatching was considerably longer than in other Prochilodus species. The most notable anatomical changes were observed between the end of the yolk larval stage and the beginning of the pre-flexion stage, when the larvae displayed directed swimming and the digestive system became functional, enabling the transition from endogenous to exogenous feeding. After hatching, the larvae grew from 6.04 to 15.15 mm in total length average. Two growth phases were observed at this stage: a non-linear asymptotic curve in yolk-sac larvae, and a linear constant-rate growth phase after exogenous feeding started. Allometric growth related to standard length was positive for head length, negative for eye diameter, and switched between phases from negative to positive in body depth and head height. Morphological development and allometric growth in different larval phases impose drastic anatomical and physiological changes that are synchronic with habitat changes and the flood cycles during the reproductive period.