Benthic estuarine communities in Brazil: moving forward to long term studies to assess climate change impacts

Abstract Estuaries are unique coastal ecosystems that sustain and provide essential ecological services for mankind. Estuarine ecosystems include a variety of habitats with their own sediment-fauna dynamics, all of them globally undergoing alteration or threatened by human activities. Mangrove forests, saltmarshes, tidal flats and other confined estuarine systems are under increasing stress due to human activities leading to habitat and species loss. Combined changes in estuarine hydromorphology and in climate pose severe threats to estuarine ecosystems on a global scale. The ReBentos network is the first integrated attempt in Brazil to monitor estuarine changes in the long term to detect and assess the effects of global warming. This paper is an initial effort of ReBentos to review current knowledge on benthic estuarine ecology in Brazil. We herein present and synthesize all published work on Brazilian estuaries that has focused on the description of benthic communities and related ecological processes. We then use current data on Brazilian estuaries and present recommendations for future studies to address climate change effects, suggesting trends for possible future research and stressing the need for long-term datasets and international partnerships

Conceptual View Representation of the Brazilian Information System on Antarctic Environmental Research

Data generated by environmental research in Antarctica are essential in evaluating how its biodiversity and environment are affected by global-scale changes triggered by ever-increasing human activities. In this work, we describe BrAntIS, the Brazilian Information System on Antarctic Environmental Research, which enables the acquiring, storing, and querying of research data generated by the Brazilian National Institute for Science and Technology on Antarctic Environmental Research. BrAntIS' data model reflects data acquisition and analysis conducted by scientists and organized around field expeditions. We describe future functionalities, such as the use of linked data techniques and support for scientific workflows

Interaction of warm acclimation, low salinity, and trophic fluoride on plasmatic constituents of the Antarctic fish Notothenia rossii Richardson, 1844

Made available in DSpace on 2019-09-12T16:53:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2013Ministério da Ciência, Tecnologia e Inovação (MCTI)Secretariat of the Inter-ministerial Commission for the Resources of the Sea (SeCIRM)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Instituto Nacional de Ciência e Tecnologia Antártico de Pesquisas Ambientais (INCT-APA)The adaptive evolution of the Notothenia rossii occurred under the selective pressure of stable and low temperatures. It is an opportunistic feeder of Antarctic krill and the fluoride in the krill carapace is apparently not toxic. We investigated the interactive effect of fluoride, elevated temperatures, and low salinity on the plasmatic constituents of this Antarctic fish. The experiments were conducted at the Brazilian Antarctic Station Comandante Ferraz (EACF), located on King George Island. The Antarctic fish N. rossii was acclimatized to eight thermo-saline-trophic conditions, combining two temperatures (0 and 4 A degrees C), two salinities (35 and 20), and two trophic conditions (with/without fluoride) for an 11-day period. Trophic fluoride was not able to alter the plasmatic levels of glucose, cholesterol, plasmatic protein, Cl-, Mg2+, Ca2+, and inorganic phosphate, but induced an acute elevation of triglycerides at 0 A degrees C and salinity of 35. At low salinity, hyperglycemia, hypertriglyceridemia, and hypocalcemia were observed. The thermo-saline interaction at 4 A degrees C was able to minimize the effects of fluoride and low salinity on the plasmatic constituents levels.[Rodrigues, E., Jr.; Feijo-Oliveira, M.; Donatti, L.] Univ Fed Parana, Dept Cell Biol, BR-81530130 Curitiba, Parana, Brazil[Vani, G. S.; Suda, C. N. K.; Rodrigues, E.] Universidade de Taubaté (Unitau), Inst Basic Biosci, BR-12030180 Taubate, SP, Brazil[Carvalho, C. S.] Univ Fed Sao Carlos, Dept Biol, BR-18052780 Sorocaba, SP, Brazil[Lavrado, H. P.] Univ Fed Rio de Janeiro, Dept Marine Biol, BR-21941902 Rio De Janeiro, RJ, Brazi

How Much Is Too Little to Detect Impacts? A Case Study of a Nuclear Power Plant

<div><p>Several approaches have been proposed to assess impacts on natural assemblages. Ideally, the potentially impacted site and multiple reference sites are sampled through time, before and after the impact. Often, however, the lack of information regarding the potential overall impact, the lack of knowledge about the environment in many regions worldwide, budgets constraints and the increasing dimensions of human activities compromise the reliability of the impact assessment. We evaluated the impact, if any, and its extent of a nuclear power plant effluent on sessile epibiota assemblages using a suitable and feasible sampling design with no ‘before’ data and budget and logistic constraints. Assemblages were sampled at multiple times and at increasing distances from the point of the discharge of the effluent. There was a clear and localized effect of the power plant effluent (up to 100 m from the point of the discharge). However, depending on the time of the year, the impact reaches up to 600 m. We found a significantly lower richness of taxa in the Effluent site when compared to other sites. Furthermore, at all times, the variability of assemblages near the discharge was also smaller than in other sites. Although the sampling design used here (in particular the number of replicates) did not allow an unambiguously evaluation of the full extent of the impact in relation to its intensity and temporal variability, the multiple temporal and spatial scales used allowed the detection of some differences in the intensity of the impact, depending on the time of sampling. Our findings greatly contribute to increase the knowledge on the effects of multiple stressors caused by the effluent of a power plant and also have important implications for management strategies and conservation ecology, in general.</p> </div

Hydroids (Cnidaria, Hydrozoa) of the intertidal zone of Governador and Paquet\ue1 islands, Guanabara Bay, Rio de Janeiro, Brazil

During six consecutive months, sampling were made at three points located on Governador Island and three on Paquetá Island in Guanabara Bay, Rio de Janeiro, Brazil. Material was collected from dock pilings and rocks in the intertidal zone. In these samples, five species belonging to three families, Corynidae, Kirchenpaueriidae and Campanulariidae, were identified. The campanulariid species Obelia dichotoma Linnaeus, 1758, dominated at nearly all points sampled. The small number of species obtained in this survey is attributed to the intense pollution in the bay, which borders the second-largest industrial complex and the second-largest demographic center of Brazil

ENDEMIC PEMPHIGUS FOLIACEUS (FOGO-SELVAGEM) .1. CLINICAL-FEATURES and IMMUNOPATHOLOGY

JOHNS HOPKINS UNIV,SCH MED,DEPT DERMATOL,IMMUNODERMATOL UNIT,BALTIMORE,MD 21205UNIV São Paulo,DEPT DERMATOL,São Paulo,SP,BRAZILUNIV São Paulo,DEPT EPIDEMIOL,São Paulo,SP,BRAZILESCOLA PAULISTA MED,DEPT DERMATOL,BR-04023 São Paulo,SP,BRAZILHOSP ADHEMAR BARROS,SERV DERMATOL,São Paulo,BRAZILHOSP ADVENTISTA PENFIGO,MATO GROSSO,BRAZILHOSP PENFIGO & DOENCAS TROPICAES,SERV DERMATOL,GOIAS,BRAZILUNIV LONDRINA,DEPT DERMATOL,PARANA,BRAZILUNIDADE SAUDE PARANA,SERV DERMATOL,CASCAVEL,BRAZILUNIV FED BRASILIA,DEPT PATOL,BRASILIA,BRAZILUNIV FED BRASILIA,DEPT DERMATOL,BRASILIA,BRAZILESCOLA PAULISTA MED,DEPT DERMATOL,BR-04023 São Paulo,SP,BRAZILWeb of Scienc