85 research outputs found
Polyplacophora (Mollusca) from reef ecosystems and associations with macroalgae on the Coast of Alagoas, Northeastern Brazil
Marine and coastal environmental education in the context of global climate changes - synthesis and subsidies for ReBentos (Coastal Benthic Habitats Monitoring Network)
As changes in coastal and marine environments are expected to negatively affect Brazilian ecosystems, the importance of Marine Environmental Education (MEE) comes to the fore. However, so far only 32 contributions related to this issue have been published in Brazil. The MEE workgroup of ReBentos aims at promoting EE and the communication of marine ecological research to the scholastic public as a whole, as well as to groups which exert an influence on general perception, such as the media, politicians, and scientists. This paper presents an overview of the initiatives of MEE in Brazil, with emphasis on the ReBentos projects and guidelines. The conceptual background of action is based on the Rio'92 Treaty on Environmental Education, thereby implying an MEE with Transdisciplinar, emancipatory and reflexive characteristics, directed to changes in values, principles and attitudes. During the period 2011 to 2015, 10 projects were developed from Alagoas to Santa Catarina States, involving the development, implementation and testing through scientific research of 16 MEE activity-models. The didactic material subsequently produced comprised three books and 21 book-chapters. A public of around 6,500 Conservation Unit visitors, 250 public school teachers and 800 high school students have been impacted to date. To act as monitors and multipliers, 250 undergraduate students and professionals were trained. Research project evaluation generated the publication of nine papers. As a further step, the need for protocol elaboration for each model is placed in evidence, in order to direct and facilitate future initiatives.A importância da educação ambiental marinha (EAM) vem tomando relevância à medida que aumenta a expectativa de impactos nos ecossistemas brasileiros ocasionados por mudanças nos ambientes costeiros. Entretanto, apenas 32 contribuições sobre esse assunto foram publicadas no Brasil. O grupo de trabalho em EAM da ReBentos objetiva promover a comunicação da pesquisa ecológica marinha para o público escolar como um todo, bem como a grupos com influência na percepção comum, como a mídia, políticos e cientistas. Este trabalho apresenta uma visão das iniciativas em EAM no Brasil, com ênfase nos projetos e diretrizes da ReBentos. A base conceitual de ação é o Tratado de Educação Ambiental da Rio 92, implicando em um ensino com características transdisciplinares, reflexivas e emancipatórias, dirigidas a mudanças em valores, princípios e atitudes. Durante o período de 2011 a 2015, 10 modelos de atividade foram desenvolvidos, de Alagoas a Santa Catarina, envolvendo sua concepção, implementação e teste por meio de pesquisa científica. O material didático produzido compreendeu três livros e 21 capítulos de livros. Um público total ao redor de 5500 visitantes de UCs, 250 professores de escolas públicas e 800 estudantes foi impactado. Como monitores e multiplicadores, foram treinados 250 estudantes de graduação e profissionais. Projetos de avaliação de pesquisa geraram nove trabalhos científicos. Como uma próxima iniciativa, é salientada a necessidade de elaboração de protocolos para cada modelo, a fim de direcionar e facilitar futuras iniciativas
Studies on benthic communities of rocky shores on the Brazilian coast and climate change monitoring: status of knowledge and challenges
Um grupo de trabalho de costões rochosos (GT) integrado à ReBentos (Rede de Monitoramento de Habitats Bentônicos Costeiros), e vinculado à Sub-Rede Zonas Costeiras da Rede Clima (MCT) e ao Instituto Nacional de Ciência e Tecnologia para Mudanças Climáticas (INCT-MC), foi criado para estudar a vulnerabilidade das comunidades bentônicas dos costões rochosos e os efeitos das alterações ambientais sobre a respectiva biota. A presente síntese foi um dos produtos desse GT e teve como objetivo principal levantar e revisar o conhecimento existente sobre as comunidades bentônicas de costões rochosos na costa brasileira, a biodiversidade associada, e verificar as potencialidades de estudos futuros para uma previsão/mensuração mais acurada dos efeitos das mudanças climáticas sobre os ambientes e sua biota.A rocky shores working group (WG) integrated with ReBentos (Monitoring Network for Coastal Benthic Habitats; Rede de Monitoramento de Habitats Bentônicos Costeiros) was created and linked to the Coastal Zones Sub Network of the Climate Network (MCT; Sub-Rede Zonas Costeiras da Rede Clima) and to the National Institute of Science and Technology for Climate Change (INCT-MC; Instituto Nacional de Ciência e Tecnologia para Mudanças Climáticas), to study the vulnerability of benthic communities on rocky shores and the effects of environmental changes on biomes in such environments along the Brazilian coast. The synthesis presented here was one of the products of this GT, and aimed to collect and review existing knowledge on benthic communities present on rocky shores of the Brazilian coast, their associated biodiversity, and the potential of future studies to accurately predict/measure the effects of climate change on such environments and their biota
Measurement of nuclear modification factors of gamma(1S)), gamma(2S), and gamma(3S) mesons in PbPb collisions at root s(NN)=5.02 TeV
The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead-lead (PbPb) and proton-proton (pp) collisions at √sNN = 5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) > RAA(ϒ(2S)) > RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN = 2.76 TeV, although the two are compatible within uncertainties. The upper limit on the RAA of ϒ(3S) integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.Peer reviewe
Descrição de parâmetros ecológicos e morfológicos externos dos poríferos no recife de coral da Ponta Verde, Maceió, Alagoas, Brasil
The ecological and morphological parameters of Porifera at the Ponta Verde coral reef, Maceio city, on Brazilian northeast coast, were studied. The organisms were collect at the reef platform during low tides and fixed with alcohol 70%. Were found 17 taxa and were characterized 7 different aspects. This paper demonstrated the morphological diversity and importance of Porifera from coral reefs at the coast of Alagoas State
Fauna associada ao fital Halimeda opuntia (Linnaeus) Lamouroux (Chlorophyta) do Recife da Ponta Verde, Macei\uf3, Alagoas, Brasil
Mycale alagoana sp.nov. and two new formal records of Porifera (Demospongiae, Poecilosclerida) from the shallow-water reefs of Alagoas (Brazil)
Polyplacophora (Mollusca) from reef ecosystems and associations with macroalgae on the Coast of Alagoas, Northeastern Brazil
ABSTRACTBrazilian marine molluscs, especially Gastropoda and Bivalvia, are relatively well studied. However, information on the class Polyplacophora is more scarce, particularly on reef-dwelling forms. This study aimed to qualitatively and quantitatively analyze aspects of polyplacophorans from reef ecosystems and their associations with macroalgae on the coast of Maceió (state of Alagoas, Brazilian Northeast). The study area included five coral reefs at Ipioca, Ponta do Prego, Ponta do Meirim, Riacho Doce and Ponta Verde, as well as two sandstone reefs, located in Guaxuma and Sereia. The samples were obtained by snorkelling along the intertidal and subtidal reef zones to a depth of up to five meters during low tides, between 2009 and 2011. In addition, the chitons associated with three macroalgae of the Ponta Verde coral reef were studied based on collections made over 12 years (from the summer of 1998 to the winter of 2009). Three replicates with an area of 25 cm2 were collected from each of the following species of macroalgal phytals: Amphiroa fragilissima (Rhodophyta), Caulerpa racemosa (Chlorophyta) and Dictyota cervicornis (Phaeophyta). A total of 715 individuals (110 juveniles and 605 adults) were identified, including Acanthochitona terezae Guerra, 1983, Ischnochiton striolatus (Gray, 1828) and Ischnoplax pectinata (Sowerby II, 1840). Acanthochitona terezae was found for the first time in the area. Ischnochiton striolatuswas the most abundant species in the reef ecosystem and in association with macroalgae. The greatest number of individuals of all three polyplacophorans identified (adults and juveniles) was found on the phytal A. fragilissima
Scleractinian corals (Cnidaria: Anthozoa) from reef ecosystems on the Alagoas coast, Brazil
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