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Mike Pole 《Alcheringa: An Australasian Journal of Paleontology》2013,37(4):405-426
Pole, M., December, 2008. The record of Araucariaceae macrofossils in New Zealand. Alcheringa 32, 405–426. ISSN 0311-5518. The Araucariaceae have a long record in New Zealand, extending back to the Jurassic at least, and Araucaria extends back to at least the Late Cretaceous. This paper reviews the macrofossil record of the family and presents new information based largely on the leaf cuticle record. Agathis, which is the only genus of the family currently growing in New Zealand, has no record before the Cenozoic. All specimens previously identified from pre-Cenozoic strata clearly belong to other taxa or do not show characteristic features of the genus. Araucariaceae macrofossils are virtually ubiquitous in the Cretaceous assemblages of New Zealand but are conspicuous by their absence or rarity in Palaeocene deposits. Their demise may be an expression of events at the Cretaceous–Palaeogene boundary. 相似文献
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Edward R. Treasure Mike J. Church Darren R. Gröcke 《Archaeological and Anthropological Sciences》2016,8(3):555-562
This paper examines the impact of animal manure on δ15N and δ13C values in a legume, Celtic Black broad bean (Vicia faba). In a field experiment, V. faba was cultivated in plots treated with farmyard manure and pure sheep manure. The results indicate that highly intensive manuring can increase δ15N values in beans, stems, leaves and pods. In comparison, manuring had a relatively small impact on δ13C values. In terms of palaeodietary reconstructions, the high δ15N values in very intensively manured beans (+3?‰) are equivalent to the trophic-level effect. Based on the experimental results, it is suggested that high δ15N values in archaeobotanical remains of V. faba may be attributable to small-scale cultivation with intensive manuring. 相似文献
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In recent times, a conventional wisdom concerning the governance of cities has emerged. It revolves around the contention that policy and planning frameworks are increasingly closed off from public and democratic accountability, in order to facilitate the pursuit of efficiency over equity objectives. The implication is that 'old' styles of governance were more open and accountable, while the 'new' seek to close off debate and streamline procedures. Yet the evidence to sustain such claims seems limited; this paper situates the policies and practices of local government in the UK within a historical perspective, and develops the contention that the claimed differences between old and new styles of governance are overdrawn. Using empirical material from two UK cities, we demonstrate that there are significant continuities in the procedures and practices of policy-makers, in terms of policy objectives, styles and modes of accountability. In this sense, greater clarity is required in terms of what constitutes both the old and new modes of local governance in the British cities. 相似文献
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