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Ecologia populacional de Libinia ferreirae (Brachyura Majoidea) no litoral sudeste do Brasil /Gonçalves, Geslaine Rafaela Lemos January 2016 (has links)
Orientador: Antonio Leão Castilho / Resumo: O caranguejo aranha Libinia ferreirae é uma espécie pouco estudada embora seja um importante integrante da cadeia trófica marinha e exerce relações simbióticas com diversos organismos. O objetivo do presente trabalho é estudar parâmetros populacionais (periodicidade reprodutiva, recrutamento juvenil, e distribuição ecológica) de L. ferreirae, tanto durante a vida livre bentônica quanto durante a vida simbiótica pelágica. Os animais foram coletados na região de Cananéia, SP, Brasil de junho/12 a maio/14, utilizando-se de um barco de pesca camaroeiro com redes "double-rig". Foram coletados 921 caranguejos, sendo 564 adultos bentônicos e 357 indivíduos juvenis associados à medusa Lychnorhiza lucerna. A abundância de fêmeas ovígeras e juvenis apresentaram associação positiva com a salinidade e granulometria do sedimento (CANONICA, r=0.44 e p=0.000052). A presença de fêmeas ovígeras em todos os meses caracteriza uma reprodução continua, apresentando associação positiva com os jovens associados à medusa no intervalo “lag” 2 (Correlação Cruzada, p<0,05), o que caracterizou uma desova efetiva, pois após dois meses dos picos reprodutivos observou-se o recrutamento juvenil. Os períodos com maior produtividade primária (> concentração de clorofila) antecederam os períodos de recrutamento juvenil, corroborando a teoria match/mismatch. Ao ajustar a desova aos períodos com elevada produtividade primária, as espécies com desenvolvimento larval planctotrófico, como L. ferreirae, garantem rec... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The spider crab Libinia ferreirae is a poorly studied species, even being an important component of the trophic web in its habitat, and presenting symbiotic relationships with several organisms as well. The aim of this research is to describe the population parameters (reproductive periodicity, juvenile recruitment and ecological distribution) of this species, for both benthic and pelagic (symbiotic) life stages. Sampling was carried out in the Cananéia region (São Paulo state, Brazil) from June 2012 through May 2014, using a shrimp fishing boat outfitted with double-rig nets. In total, 921 crabs were collected, 564 adults (benthic) and 357 juveniles (pelagic), living in symbiosis to medusas of Lychnorhiza lucerna. The abundance of ovigerous (carrying embryos) females showed a positive association to salinity and grain size values (CANONICA, r=0.44; p=0.000052). The presence of such ovigerous females throughout the whole sampling period characterizes a continuous reproduction pattern, once they presented a positive relation to symbiotic juveniles at time lag “+2” (Cross-correlation, p<0.05). It can also evidence an effective spawning, since two months after reproductive peaks it is possible to observe peaks in juvenile recruitment. The periods with increased primary productivity (high in chlorophyll concentration) also preceded periods of juvenile recruitment, in agreement to the match-mismatch theory. Therefore, we propose that this species presents an adjust... (Complete abstract click electronic access below) / Mestre
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Výstavní pavilon / Exhibition PavilionShánělová, Lenka January 2014 (has links)
The Master´s thesis contains design of steel construction of exhibition pavilion, which is consists of columns, dome, lantern and suspension footbridge. Building will be intended for organizing exhibitions and conferences by town Trutnov. Two models of variants of dome´s construction are drafted in this work– Schwedler´s and Föpple´s dome. Models are space tubular structures.The work contains static assessment of spatial structures and spherical steel joint in program SCIA Engineer for both variants. Hand assessment of bars, basic details and anchoring, technical report and drawing dokumentation are drafted for selected variant construction with Schwedler´s dome.
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