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Canada is a large nation, approximately 1 billion hectares in size, and until recently, no national assessment of forest fragmentation had been undertaken. To assess national level biodiversity and ecosystem condition, national drivers of forest fragmentation are identified as being either primarily natural (e.g., resulting from wildfires, water features, or topography), or primarily anthropogenic (e.g., resulting from urbanization or roads and associated activities such as forest harvesting and oil and gas exploration). The relative importance of each of these fragmentation drivers within Canada's ten forested ecozones, which occupy approximately 650 million ha, is assessed using ecozone summaries and standard scores. Forest pattern metrics were generated from a Landsat‐derived land cover product and fragmentation drivers were characterized using available national datasets. Through this analysis, we combine and portray the relative importance of forest patches with spatial layers indicative of natural and anthropogenically induced conditions as driving various fragmentation regimes over the forested area of Canada. The forest fragmentation in Canada can be characterized primarily by natural drivers, whereas fragmentation regimes attributable to anthropogenic drivers are typically regionally located and related to industrial activities and access (i.e., roads). We identify three scenarios in our results that characterize forest fragmentation in Canada: ecozones with similar forest patterns but different drivers; ecozones with similar patterns and drivers; and finally, ecozones with both different patterns and different drivers. Our findings indicate that national assessments of forest fragmentation should account for both natural (and inherent) and anthropogenic sources of fragmentation. 相似文献
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Joanne Ella Parsons 《Irish Studies Review》2014,22(4):535-536
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Political reconciliation in Timor Leste,Solomon Islands and Bougainville: the dark side of hybridity
In recent years, the study and practice of political reconciliation has experienced a turn to hybridity. This turn has been defined by the increased rate at which liberal international and local peacebuilding practices, and their underlying ideas, have become merged, integrated or co-located in time and space. While hybrid approaches to reconciliation have been praised as an effective means of engaging local populations in peacebuilding operations, little attention has been paid to examining whether or not they also bring unintended negative consequences. Drawing on the cases of Timor Leste, Solomon Islands and Bougainville, this article examines the potentially dark side of hybridity. It demonstrates that, in each of these cases, hybrid approaches to political reconciliation have brought both positive and negative consequences. On the positive side of the equation, hybridity has seen imported international approaches to reconciliation adapted to meet local demands and ensure resonance with local populations. On the negative side, however, the misappropriation and instrumentalisation of local practices within hybrid approaches has served to damage their legitimacy and to jeopardise their contributions to reconciliation. The article thus concludes that the existence and extent of this dark side necessitates a re-evaluation of how hybrid approaches to political reconciliation are planned and implemented. 相似文献
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Joanne Vera Stolk Delphine Nachtergaele 《Symbolae Osloenses / auspiciis Societatis Graeco-Latinae》2016,90(1):122-163
Greek papyrus letters preserve not only instances of the replacement of the dative case; they also show the use of the dative instead of the accusative case as direct object and disjoint infinitival subject. This interchange is mostly found in epistolary phrases, namely the salutation formula (?σπ?ζομα? σε) and the initial (ε?χομα? σε ?για?νειν) and final (?ρρ?σθα? σε ε?χομαι) health wishes. The phonetic similarity of the pronouns might have created the circumstances for case confusion. Contamination of the constructions reflects the difficulties of the scribes to construct conservative epistolary phrases and, thereby, diachronic phraseological variation might reflect language change. In salutation formulas, the use of a dative Addressee could be explained by analogical overextension from the category of communication verbs taking a dative complement. The decline of the accusative and infinitive construction might be one of the reasons why the accusative disjoint infinitival subject is replaced by the dative case in health wishes. 相似文献
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Joanne Pettitt 《European Legacy》2018,23(3):286-300
Taking “second-generation perpetrators” to refer to the tension between the guilt of the parents who were actively involved in carrying out Nazi atrocities, and the innocence of their offspring, I posit the oscillation between these positions as a form of liminality. Underpinned by the work of Jacques Derrida and Marianne Hirsch, I discuss this form of liminality in relation to concepts of the ghostly, examining the ways in which Holocaust narratives, literary and cinematic, are haunted by the past. I argue that the family conflicts such second-generation narratives present run the risk of displacing the real victims of the Holocaust. 相似文献
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Over the last decade several dozen direct dates on cave art pigments or associated materials have supplemented more traditional
style-based attempts to establish a chronological (and developmental) scheme for cave art. In the “post-stylistic” era an
holistic integration of pigment “recipe” analysis, formal stylistic analysis and direct chronometric dating have been applied
to a handful of dates. Here, we examine the state-of-the-art of Palaeolithic cave art dating, with particular emphasis on
certain radiocarbon and Uranium-series projects. We examine the relative successes and weaknesses of this cutting edge science.
We conclude that there are several weaknesses in current applications that are in serious need of addressing. Issues of sample
contamination and of the heuristic relationship between materials dated and the production of the art are particularly problematic.
It follows that one should at present be very cautious about straightforward interpretations of apparent “dates” of cave art. 相似文献