995 resultados para 7140-312


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This study investigates the landscape evolution and soil development in the loess area near Regensburg between approximately 6000-2000 yr BP (radiocarbon years), Eastern Bavaria. The focus is on the question how man and climate influenced landscape evolution and what their relative significance was. The theoretical background concerning the factors that controlled prehistoric soil erosion in Middle Europe is summarized with respect to rainfall intensity and distribution, pedogenesis, Pleistocene relief, and prehistoric farming. Colluvial deposits , flood loams, and soils were studied at ten different and representative sites that served as archives of their respective palaeoenvironments. Geomorphological, sedimentological, and pedological methods were applied. According to the findings presented here, there was a high asynchronity of landscape evolution in the investigation area, which was due to prehistoric land-use patterns. Prehistoric land use and settlement caused highly difIerenciated phases of morphodynamic activity and stability in time and space. These are documented at the single catenas ofeach site. In general, Pleistocene relief was substantially lowered. At the same time smaller landforms such as dells and minor asymmetric valleys filled up and strongly transformed. However, there were short phases at many sites, forming short lived linear erosion features ('Runsen'), resulting from exceptional rainfalls. These forms are results of single events without showing regional trends. Generally, the onset of the sedimentation of colluvial deposits took place much earlier (usually 3500 yr BP (radiocarbon) and younger) than the formation of flood loams. Thus, the deposition of flood loams in the Kleine Laaber river valley started mainly as a consequence of iron age farming only at around 2500 yr BP (radiocarbon). A cascade system explains the different ages of colluvial deposits and flood loams: as a result of prehistoric land use, dells and other minor Pleistocene landforms were filled with colluvial sediments. After the filling of these primary sediment traps , eroded material was transported into flood plains, thus forming flood loams. But at the moment we cannot quantify the extent ofprehistoric soil erosion in the investigation area. The three factors that controlled the prehistoric Iandscapc evolution in the Ioess area near Regensburg are as follows: 1. The transformation from a natural to a prehistoric cultural landscape was the most important factor: A landscape with stable relief was changed into a highly morphodynamic one with soil erosion as the dominant process of this change. 2. The sediment traps of the pre-anthropogenic relief determined where the material originated from soil erosion was deposited: either sedimentation took place on the slopes or the filled sediment traps of the slopes rendered flood loam formation possible. Climatic influence of any importance can only be documented as the result of land use in connection with singular and/or statistic events of heavy rainfalls. Without human impact, no significant change in the Holocene landscape would have been possible.

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Foi aprovada, na Comissão de Sistematização, a emenda do Deputado Carlos Mosconi (PMDB-MG) que proíbe a comercialização de órgãos. Posteriormente, o Congresso deverá votar uma lei que regulamenta a atividade de doação de órgãos. Aprovada, ainda, a emenda do Senador Jarbas Passarinho (PDS-PA) que dá isenção fiscal a entidades de assistência social, caso da Santa Casa da Misericórdia. O Deputado Egídio Ferreira Lima (PMDB-PE) tem emenda aprovada determinando que só uma entidade do governo seja responsável pelos recursos da ciência e tecnologia. Rejeitada a proposta do Deputado Bocayuva Cunha (PDT-RJ) de retirar o dispositivo que transfere ao Ministério da Saúde a prevenção contra acidentes de trabalho. Aprovada a emenda do Deputado Inocêncio de Oliveira (PFL-PE) que retira a exclusividade do governo na importação de equipamentos e insumos para a fabricação de medicamentos. Aprovada a emenda do Deputado Augusto Carvalho (PCB-DF) que concede tratamento igual ao homem e à mulher na condição de dependente, para efeito da previdência social. Sete crianças levam cartazes formando a palavra justiça. Elas pedem um mundo sem fome, sem violência, com justiça social e esperança. Ulysses Guimarães (PMDB-SP), presidente da Assembleia Nacional Constituinte (ANC), recepciona as crianças e declara que gostaria de colocá-las na Tribuna para elas colocarem suas reivindicações, mas o Regimento não permite.

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Thursday, October 27 · 7:00pm - 8:00pm
Location
Brooklyn College
Studio 312 in Roosevelt Hall, Bedford Ave.
Brooklyn, NY
Created By
Cory Bracken

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This latest edition of J. S. Bach’s B-minor Mass, by Ulrich Leisinger, described by the publisher as a ‘hybrid edition’, aptly addresses the needs of present-day performers and at the same time fulfils the scholarly expectations of new critical editions to conform to the current study environment

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Grey sediment with clasts ranging from small to medium in size. Edge-to-edge grain crushing is abundant, with some lineations. Minor amounts of rotation structures can also be seen.

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Pollination services provided by insects play a key role in English crop production and wider ecology. Despite growing evidence of the negative effects of habitat loss on pollinator populations, limited policy support is available to reverse this pressure. One measure that may provide beneficial habitat to pollinators is England’s entry level stewardship agri-environment scheme. This study uses a novel expert survey to develop weights for a range of models which adjust the balance of Entry Level Stewardship options within the current area of spending. The annual costs of establishing and maintaining these option compositions were estimated at £59.3–£12.4 M above current expenditure. Although this produced substantial reduction in private cost:benefit ratios, the benefits of the scheme to pollinator habitat rose by 7–140 %; significantly increasing the public cost:benefit ratio. This study demonstrates that the scheme has significant untapped potential to provide good quality habitat for pollinators across England, even within existing expenditure. The findings should open debate on the costs and benefits of specific entry level stewardship management options and how these can be enhanced to benefit both participants and biodiversity more equitably.

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Jornal elaborado pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP