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Onary-Alves, S.Y., Hsiou, A.S. & Rincón, A.D., July 2016. The northernmost South American fossil record of Boa constrictor (Boidae, Boinae) from the Plio–Pleistocene of El Breal de Orocual (Venezuela). Alcheringa 41, xxx–xxx. ISSN 0311-5518.

Boa constrictor is an extant boid widely distributed through the neotropical region, from the north of Central America to central Argentina. The fossil record of the species includes examples from several localities across the Americas that extend beyond the current distribution of the species. Here we report the first Plio–Pleistocene fossils of Boa from Monagas state, Venezuela. The material comes from El Breal de Orocual (Maturín municipality), which is an inactive tar seep deposit emplaced within the Mesa Formation. The specimens consist of two isolated anterior trunk vertebrae, an articulated sequence of six mid-trunk vertebrae and two posterior trunk vertebrae. The vertebrae are attributed to B. constrictor based on the following features: robust and high vertebrae; thick zygosphene with a notched or concave anterior edge; presence of a paracotylar, subcentral and lateral foramina; marked parasagittal ridges; epizygapophyseal process evident on the dorsal surface of the postzygapophyseal articular facets and high blade-like neural spine. The presence of B. constrictor in northern of Venezuela indicates a palaeoenvironment probably like savanna crossed by rivers with riparian forests, and suggests the predominance of a mesothermal climate with a moderate rainfall.

Silvio Y. Onary-Alves [], Programa de Pós-graduação em Biologia Comparada, Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulo (USP), Av. Bandeirantes 3900, CEP 14040901, Ribeirão Preto, São Paulo, Brazil; Annie S. Hsiou [], Laboratório de Paleontologia, Faculdade de Filosofia, Ciências e Letras, Departamento de Biologia, Universidade de São Paulo (USP), Av. Bandeirantes 3900, CEP 14040901, Ribeirão Preto, São Paulo, Brazil; Ascanio D. Rincón [], Laboratorio de Paleontología, Centro de Ecología, Instituto Venezolano de Investigaciones Científicas (IVIC), Carretera Panamericana Km 11, 1020-A Caracas, Venezuela.  相似文献   

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Projects promoting community‐based management of natural resources frequently encourage local smallholders to share flora, fauna, or land forms with state agencies and/or private companies. Ideals of common property and moral economy have inspired this agenda and helped spread it globally. In Southern Africa, however, the general model of shared landscapes has collided with a bitter history of white colonization and land grabbing. This article recounts the rise and fall of one CAMPFIRE (Communal Areas Management Programme for Indigenous Resources) project in eastern Zimbabwe. There, cadastral politics — struggles over the bounding and control of land — overwhelmed negotiations for joint management and eco‐tourism. Across the border, in Mozambique, community‐based resource management has engaged with cadastral politics in a more fruitful fashion. In the midst of latter‐day Afrikaner colonization, this project mapped smallholders’ claims to land. Thus, the Zimbabwean project ignored territorial conflict and ultimately succumbed to it. The Mozambican project jumped into the fray, with some success. On past or current settler frontiers, community‐based management may learn from this lesson: dispense with an ideology of sharing and join the rough‐and‐tumble of cadastral politics.  相似文献   
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This paper engages critically with current ethical trading practice in the global cut flower trade, focusing on the specific case of Kenyan export production for European markets. Notions of governmentality are adopted in the analysis, in order to understand the rationalities and materialities that underpin the organizational geographies of business responsibility in this context, and serve to re-regulate the trading network. Mentalities of stakeholding and practices of auditing are shown to play prominent roles in this process. However, it is argued that regulatory contradictions associated with the audit economy place organizational limits on the effective practice of ethical trade.  相似文献   
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In this paper we present a new approach to measuring government efficiency, based on the theory that communities that allocate resources efficiently in the local public sector maximize property values. We use Data Envelopment Analysis (DEA) to identify the counties in Minnesota that are characterized by property-value maximization and hence an efficient public sector. The results indicate that the dominant source of public sector inefficiency is an inappropriate scale of operations. It appears that some county jurisdictions are too large to service the population efficiently. The size and concentration of government power are also responsible in part for observed inefficiencies.  相似文献   
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