Pollen evidence for major shifts in forest composition since the mid‐nineteenth‐century in the vicinity of Sudbury,Ontario

Numerous anthropogenic stressors have impacted the region surrounding Sudbury, Ontario, leading to pronounced vegetation and landscape change. Few long‐term records exist to understand the nature or timing of this change. We use pollen analysis from radiometrically dated sediments of Clearwater Lake to compare pre‐ and post‐settlement vegetation. Beginning ～1850 CE, the record shows major shifts in forest composition, coincident with settlement and the beginnings of lumbering. These changes are unprecedented for the past ～5000 years, and consist of increases in diversity and abundance of deciduous tree taxa and herbaceous disturbance indicators. While evidence of mining appears as early as 1900 CE, little effect is seen in the pollen record until ～1930 CE, when sedimentation rates increased and acidification of the lake also began. At this time, further increases in palynological disturbance indicators and minimum sediment organic matter levels indicate the period of maximum vegetation loss. As a result of reduced emissions since the 1970s, water quality began to improve in Clearwater Lake and there are some decreases in the abundances of shade‐intolerant disturbance indicators in the pollen record. However, the fact that the pollen assemblages do not resemble those prior to 1850 suggests lasting vegetation changes.     

Rilke's Orpheus: A myth revived

This article argues that debates about the theoretical relations between Critical Theory and Existential philosophy have to date been excessively focused on the connections between Martin Heidegger and Theodor W. Adorno, and should now extend their analysis to consider points of dialogue between Adorno and Karl Jaspers. Examining the cognitive, ethical and political implications of their works, the article claims that Jaspers and Adorno have much in common and contribute in related ways to our understanding of certain important issues. This is the case in their views on idealism and on the politics of humanism, but it is most evident in their reflections on the role of metaphysics in modern philosophy: both seek to salvage the contents of metaphysical thinking, and they denounce the tendency towards purely immanent or autonomist accounts of human reality in the theoretical traditions to which they belong. Their views on metaphysics are especially apparent in their interpretations of Kant, in their critiques of neo-Kantianism, and in their shared hostility to Heidegger's reaction to Kantian philosophy.     

Possible fossil impression in sandstone from the late Palaeoproterozoic-early Mesoproterozoic Semri Group (lower Vindhyan Supergroup), central India

The Lower–Middle Ordovician Zitai Formation of the South China palaeoplate consists of a succession of purple red, nodular argillaceous limestones. Palaeogeographically, it is distributed along the southeastern margin of the Yangtze Platform, and is of late Floian to Dapingian age, correlative with the Dawan Formation of the Middle and Lower Yangtze Platform. In Shitai County, Anhui Province, East China, the Zitai Formation is rich in conodonts, enabling the recognition of four biozones based on first appearance data. Detailed palaeontological and biostratigraphical study of these conodonts reveals that the Ordovician conodont radiation in the Lower Yangtze Platform attained its first diversity peak low in the Oepikodus evae Biozone. This diversification is generally consistent with macroevolutionary trends of brachiopods of South China and graptolites of the Upper Yangtze Platform, but was earlier than that of trilobites and acritarchs of the same palaeoplate. Correlation with the sea-level curve for South China suggests that conodont diversity change during the Ordovician radiation was mainly controlled by regional sea-level fluctuations.     

Identification of Suspected Horn from the Queen Anne's Revenge (1718), North Carolina,USA

Infrared spectroscopy can be a valuable tool for conservators and archaeologists to help identify archaeological artefacts. We present a case‐study on the identification of an artefact recovered by North Carolina Department of Cultural Resources (NCDCR) Underwater Archaeology Branch from an early‐18th‐century shipwreck (31CR314). The wreck is assumed to be the remains of Queen Anne's Revenge, which sank off the North Carolina coast in 1718. A sample of the artefact was analysed by infrared spectroscopy to identify it. Prior to spectroscopic analysis it was speculated that the sample could be animal horn or leather. © 2011 The Authors     

The Henequen Ports of Yucatan’s Gilded Age

Over the last two centuries, the coast has played a major role in the economy of Yucatán, and has served as a key venue in its growing engagement in the global economy. A prominent chapter in this history took place during the Gilded Age (1860–1915), which saw the emergence of a powerful plantation class whose wealth was based on meeting international demand for the fiber of the agave, or henequen plant, which was used to manufacture rope, cordage, and twine. The cultivation of this plant gave rise to hundreds of plantations, and an accompanying infrastructure of haciendas, fiber processing plants, and an extensive regional network of railways for transporting henequen to the port of Progreso, from whence it was exported to North America and Europe. As part of this infrastructure, several plantation owners laid rail lines from their haciendas to the coast and built small ports for shipping their henequen to Progreso. These ports, which are documented in these pages, represented a substantial capital outlay, and were built under the shadow of the gathering clouds of the Mexican Revolution. Viewed in retrospect, they offer an insightful perspective on the economic outlook of the Yucatecan elites in the dawn of the modern age.     

Government funding of non-governmental organisations and the implied freedom of political communication: The constitutionality of gag clauses

Provisions in government funding agreements with non-governmental organisations (NGOs) may constrain the ability of these organisations to contribute to political debate. NGOs perceive risks to their funding if they criticise government policy. Such organisations play a significant role in the democratic process, and this article examines the applicability of the constitutional freedom of political communication to ‘gag clauses’. Australian courts have not considered the constitutional freedom in this context, but the Supreme Court of the United States has considered the question in relation to the First Amendment. The article shows what can be learned from American jurisprudence and Australian case law in order to challenge such provisions.

政府与非政府组织的资助协议中的条款约束了这些组织进行政治辩论的能力。非政府组织如果批评政府的政策就会感到资助受到威胁。非政府组织在民主过程中扮演了重要的角色,本文政治探讨了交流的宪政自由能否适用于“钳口条款”。澳大利亚法庭没有处理过此类宪政自由的案子,不过美国高等法庭倒是处理过和第一修正案相关的问题。本文分析了可以从美国的司法以及澳大利亚的案例法中学到什么,以挑战这类条款。     

The Presidency and the News Media

Abstract

Leo Strauss, often considered a critic of modernity, is famous for his claim that Machiavelli, in turning away from the classical tradition, is its originator. Yet his “Restatement on Xenophon's Hiero” presents a concise indictment of that tradition and a remarkably sympathetic account of the political and philosophic motives that led to the rupture. In light of this tension, Strauss's interest in Xenophon appears as a useful counterweight to both.