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

Grohmann, P

doi:10.1590/s0073-47212009000300010

Cited by 6 publications

(2 citation statements)

References 12 publications

(17 reference statements)

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“…Therefore, the greater probability of persistence on the upper side might result from the easy access to plankton, which is necessary for feeding and directly related to their survival. Many environmental parameters affect the presence of Hydrozoa in marine environments, especially luminosity and sedimentation (reviewed by Grohmann 2009). On the panels by Masi (2012), such variables were significantly smaller on the lower side.…”

Section: Discussionmentioning

confidence: 99%

Analytical successional tools of fouling communities submitted to different light effects

2016

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Abstract:The present study uses transition matrices to compare successional processes (colonization, disturbance, persistence and replacement) of fouling communities submitted to different light effects on Cabo Frio Island, a seasonal upwelling region. Twelve functional groups were identified, and differences in the transition probabilities shown by the matrices suggest a preference for the replacement property of functional groups, which indicates the facilitation successional mechanism. The probability of colonization of these groups differed according to the direction of the substrate, which caused a negative effect of light reduction on algae with a greater probability of disturbance (sensu species replacement), which is typical of a more stressful environment. Species of the same functional group replace each other through competition and herbivory, which promotes the distinction between earlier and later groups on the successional process. Successional trajectories evaluated through global transition matrices change at each time step because they depend on the species turnover rate, and therefore, they are informative of the changing processes of the community. The probabilistic rate of changes related to successional processes may be used to evaluate future conditions of fouling communities, and the deterministic components and stochastic elements will render these communities self-organizable.

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Section: Discussionmentioning

confidence: 99%

Analytical successional tools of fouling communities submitted to different light effects

2016

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“…The Guanabara Bay comprises the second largest industrial complex and the second largest population center of the country 6 and is considered one of the most polluted environments of the Brazilian coast. 7 In addition to receiving industrial incentives, the bay receives a significant amount of pollution of organic and inorganic materials from households It is understood that the ecological impact as a result of water pollution can produce the imbalance of an entire ecosystem and contribute to the spread of various microorganisms, affecting working and health conditions of many fishermen whose main source of income is fishing.…”

Section: Artisanal Fisherman Is a Professional Who Is Properly Licensmentioning

confidence: 99%

Health and work of cassinu community fishermen, in Rio de Janeiro, Brazil: social (in) visibility and struggle for recognition

Ribeiro¹,

Sabóia²,

Souza³

2016

R. pesq. cuid. fundam. online

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Objetivo: Discutir as condições de saúde e trabalho de pescadores artesanais da colônia de pescadores do Gradim Z-08, na comunidade Cassinú. Método: Pesquisa de campo, de caráter quanti-qualitativo, realizada no período de janeiro a maio de 2013, com pescadores artesanais de uma colônia situada na comunidade Cassinú, RJ. Resultados: Foram entrevistados 35 pescadores com idade prevalente entre 40 e 55 anos, 34,3% estudaram até o Ensino Fundamental 1, 42,9% recebem renda mensal entre 1 e 2 salários mínimos,71,4% utilizam EPI’s de forma parcial, 91,4% sofreram algum ferimento na profissão. Identificou-se pelos depoimentos e observações locais, precárias condições de trabalho e riscos associados à poluição ambiental. Conclusão: O estudo demonstrou que há riscos de ferimentos e contaminação por microrganismos na água pela utilização parcial de EPI’s, más condições habitacionais e saneamento ineficaz. Condições estas agravadas por falta de proteção trabalhista, pela informalidade do trabalho artesanal, baixa escolaridade e baixa renda obtida com a atividade. Além disso, alertou para que enfermeiros e outros profissionais da saúde se preocupem com as populações “invisíveis”, desenvolvendo ações e investigações que gerem reflexões sobre estratégias que favoreçam melhorias na educação e saúde. Descritores: Condições de Trabalho, Poluição Ambiental, Enfermagem.

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Benthic Estuarine Assemblages of the Southeastern Brazil Marine Ecoregion (SBME)

Lana

Christofoletti

Gusmao

et al. 2018

Brazilian Marine Biodiversity

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

Cited by 6 publications

References 12 publications

Analytical successional tools of fouling communities submitted to different light effects

Analytical successional tools of fouling communities submitted to different light effects

Health and work of cassinu community fishermen, in Rio de Janeiro, Brazil: social (in) visibility and struggle for recognition

Benthic Estuarine Assemblages of the Southeastern Brazil Marine Ecoregion (SBME)

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