Upper Peninsula
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Pterodactyloid pterosaur bones from Cretaceous deposits of the Antarctic Peninsula
Abstract Fossil vertebrates from Antarctica are considerably rare, hampering our understanding of the evolutionary history of the biota from that continent. For several austral summers, the PALEOANTAR project has been carrying out fieldwork in the Antarctic Peninsula in search for fossils, particularly Cretaceous vertebrates. Among the specimens recovered so
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
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2. Padrões de assentamento, subsistência, mobilidade sazonal e interação cultural entre os caçadores-coletores do período Arcaico Tardio (4.500-2.000 A.P.) na Upper Peninsula, Michigan, EUA
Os dados acerca do período Arcaico Tardio (4.500 a 2.000 A.P.) na Upper Peninsula de Michigan são precários e pouco nos informam sobre o modo de vida dos habitantes indígenas na região. Pensando-se nesta problemática, esta pesquisa intenta estudar os padrões de assentamento, subsistência, mobilidade sazonal e interação cultural entre os diferentes
Publicado em: 2011
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3. CARACTERIZAÇÃO TECNOLÓGICA DAS ARGILAS DA PENÍNSULA DE SANTA ELENA, EQUADOR: VIABILIDADE DE SUAS UTILIZAÇÕES INDUSTRIAIS
Clays of the Santa Elena Peninsula located to the southwest of the coast of Ecuador have been studied in order to identify its main physical, chemical and mineralogical characteristics, as well as the main mineral contained in these clays. One hundred eighty eight points were searched and forty and two samples were collected, being representative of the six
Publicado em: 2008
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4. Isolation and characterization of a copper-resistant methanogen from a copper-mining soil sample.
A copper-resistant methanogen for which the CuSO4 MICs were approximately 2- to 36-fold higher than those for other methanogens tested was isolated from a copper-mining area in the upper peninsula of Michigan. The rod-shaped methanogen used H2-CO2 or formate, but not acetate or methanol, as a growth substrate. Standing incubation with H2-CO2 medium resulted
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5. Effect of Solar Ultraviolet-B Radiation during Springtime Ozone Depletion on Photosynthesis and Biomass Production of Antarctic Vascular Plants1
We assessed the influence of springtime solar UV-B radiation that was naturally enhanced during several days due to ozone depletion on biomass production and photosynthesis of vascular plants along the Antarctic Peninsula. Naturally growing plants of Colobanthus quitensis (Kunth) Bartl. and Deschampsia antarctica Desv. were potted and grown under filter
American Society of Plant Physiologists.
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6. Environmental response of upper trophic-level predators reveals a system change in an Antarctic marine ecosystem.
Long-term changes in the physical environment in the Antarctic Peninsula region have significant potential for affecting populations of Antarctic krill (Euphausia superba), a keystone food web species. In order to investigate this, we analysed data on krill-eating predators at South Georgia from 1980 to 2000. Indices of population size and reproductive perfo