997 resultados para Africa, Northern
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This paper aims to study the distribution of natural nests of Xylocopa ordinaria and characterize its nesting habits in the restinga of Grussai/Iquipari (RJ), supporting future studies on the pollinators management in the northern Rio de Janeiro state. The data obtained from Aug/2003 to Dec/2004, in an area of 11.6ha, were related to the nest distribution, substrate identification and dimensions, emergence, sex ratio, nest structure (n= 23 nests) and pollen content analysis of provisioning masses and feces. X. ordinaria nests were abundant and presented a clustered distribution. These bees do not present taxonomical affinity for nesting substrates, but preferences for wood availability and characteristics, being Pera glabrata the main substrate. X. ordinaria is a multivoltine species that tolerates co-specifics in their nests. These bees were generalist on their nectar and pollen consumption, but presented floral constancy while provisioning brood cells. These behaviors, activity along the year, flights throughout the day, and legitimate visits to flowers indicate the importance of X. ordinaria on the pollination of plants in the restinga.
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The dismal growth performance of Africa is the worst economic tragedy ofthe XXth century. We document the evolution of per capita GDP for thecontinent as a whole and for subset of countries south of the Saharadesert. We document the worsening of various income inequality indexesand we estimate poverty rates and headcounts. We then analyze some ofthe central robust determinants of economic growth reported bySala-i-Martin, Doppelhofer and Miller (2003) and project the annual growthrates Africa would have enjoyed if these key determinants had taken OECDrather than African values. Expensive investment goods, low levels ofeducation, poor health, adverse geography, closed economies, too muchpublic expenditure and too many military conflicts are seen as keyexplanations of the economic tragedy.
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Report on the University of Northern Iowa for the year ended June 30, 2007
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Focalizada nas políticas públicas ambientais em Cabo Verde, sobretudo na delimitação das áreas de conservação, esta tese busca discutir as agendas institucionais dos Estados pós-coloniais na África. Ao traçar este como seu objetivo, questiona também o papel das elites políticas na busca de referências para o desenvolvimento nacional de seus países. Assim, partindo de uma abordagem institucionalista, referenciada em M. Douglas e E. Ostrom, com um enfoque na análise dos discursos, das práticas e dos atores, foi privilegiada uma abordagem qualitativa com recurso a entrevistas estruturadas e focused interview. Delinearamse, nesses termos, as seguintes hipóteses: que os Estados pós-coloniais do Sul situam-se em matéria de políticas públicas ambientais como nos demais campos de desenvolvimento nacional – mimetizando os modelos institucionais dos países do Norte e/ou das suas ex-metrópoles; em consequência, ao assimilarem tais modelos, as entidades políticas nascentes e suas elites vêm provocando a extroversão; e a problemática de importação de modelos institucionais não é um fenômeno ex-nihilo: há sempre, por um lado, “conjunturas críticas” produtoras de “orfandades” que estimulam as referidas elites a se empenharem na procura de modelos exógenos e, por outro lado, existe também uma forte pressão por parte das agências internacionais financiadoras no sentido de as elites se situarem em relação aos modelos exógenos. Conclui-se que, não obstante a “compra” de modelos institucionais para o desenvolvimento, os efeitos decorrentes demonstraram ser problemáticos quando a importação é estabelecida como hegemônica – a única estratégia possível. No domínio do ambiente, os parques de Serra Malagueta e Fogo testemunham o caráter extrovertido da instituição.
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A new species of Glena Hulst (Lepidoptera, Geometridae) from northern Chile. A new species of Glena Hulst (Lepidoptera, Geometridae) is described from two valleys of the coastal desert of northern Chile. Immature stages are associated with Trixis cacalioides (Kunth) Don. (Asteraceae). Holotype, male and female genitalia, and a sexual dimorphic feature are illustrated. This is the first record of a species of Glena from Chile.
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The genus Stylogaster Macquart (Diptera, Conopidae) is represented by 14 species in the Afrotropical region, five of them endemic to Madagascar and two recorded from South Africa, one of them endemic. Fifteen specimens of Muscidae, 14 from Madagascar and one from South Africa, belonging to 10 species, impaled with Stylogaster eggs were examined. Among them, three new muscid host species were found. The dissected eggs were all similar, suggesting the presence of the same species in both localities, what is not recorded until now. The available data on the dipteran Stylogaster eggs hosts in Africa is summarized. Color photos of the material examined are presented.
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Male and female adults of a new species of Lioptilodes Zimmerman (Lepidoptera, Pterophoridae) are described and illustrated. Immature stages are associated with Baccharis scandens (Ruiz & Pav.) Pers. (Asteraceae). The species was collected in two localities of northern Chile: near sea level in the Azapa valley, in the coastal desert of Arica Province and at 3000 m elevation in Socoroma, Parinacota Province.
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Report on a review of selected general and application controls over the University of Northern Iowa’s tuition and fees system for the period May 24, 2007 through July 3, 2007
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We investigate the impact of 20th--century European colonizationon growth in Africa. We find that in the 1960--88 period growth has beenfaster for dependencies than for colonies; for British and Frenchcolonies than for Portuguese, Belgian and Italian ones; and for countrieswith less economic penetration during the colonial period. On average,African growth accelerates after decolonization. Proxies for colonialheritage add explanatory power to growth regressions and make indicatorsfor human capital, political and ethnic instability lose significance.Colonial variables capture the same effects of a sub--Saharan dummy andreduce its significance when jointly included in a cross sectionalregression with 98 countries.
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A new species of Eccopsis Zeller (Lepidoptera, Tortricidae) from the coastal valleys of northern Chile, with the first continental record of E. galapagana Razowski & Landry. Eccopsis Zeller, 1852 is reported for the first time from Chile. Eccopsis razowskii Vargas, n. sp. is described and illustrated based on specimens reared from larvae collected on native Acacia macracantha Willd. (Fabaceae) in the coastal valleys of the northern Chilean desert. Eccopsis galapagana Razowski & Landry, 2008, previously known only from the Galapagos Islands, Ecuador, is recorded for the first time from continental South America. Larvae of the latter were collected in northern Chile feeding on Prosopis alba Griseb (Fabaceae).
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Karyological results give evidence that the South African Crocidura flavescens (Geoffroy, 1827) is not conspecific with the West and East African giant shrews of the taxa spurrelli, manni, kivu and olivieri
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A new species of Eupithecia Curtis (Lepidoptera, Geometridae) from the Azapa Valley, northern Chile. Male and female adults of a new species of Eupithecia Curtis from the Arica Province, Chile are described and illustrated. The species is compared with E. yubitzae Vargas & Parra, 2004, from the same locality, and E. galapagosata Landry & Rindge 1995, from the Galapagos Islands, Ecuador.
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Report on a special investigation of the Assistant Director of the Camp Adventure program at the University of Northern Iowa for the period January 1, 2006 through March 31, 2008
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Analiza la cantidad de carbon organico y nitrogeno en las costas del norte del Perú en noviembre de 1977
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Estudia la distribución de las aves marinas en el norte del Perú.