Spatial variability of recent sedimentation in Lake Ohrid (Albania/Macedonia) - a complex interplay of natural and anthropogenic factors and their possible impact on biodiversity patterns
Spatial variability of recent sedimentation in Lake Ohrid (Albania/Macedonia) - a complex interplay of natural and anthropogenic factors and their possible impact on biodiversity patterns
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DOI：
10.5194/bgd-7-3911-2010
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
H. Vogel;M. Wessels;C. Albrecht;H. Stich;B. Wagner
中科院分区：
文献类型：
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作者：
H. Vogel;M. Wessels;C. Albrecht;H. Stich;B. Wagner
抽象。奥赫里德湖可能是上新世，因此通常被称为欧洲最古老的湖泊。在这项研究中，最近的沉积物组成的空间变异性进行了评估，使用>50流域广泛分布的表面沉积物样品。分析地球化学的整体参数，选定的金属，颜料浓度以及粒度分布显示了显着的空间异质性，在表面沉积物组成。这意味着奥赫里德湖的沉积是由多种自然和人为因素和过程的相互作用控制的。控制表层沉积物组成的主要因素与地质汇水特征、人类土地利用和逆时针旋转的表层水流的差异有关。在某些情况下，控制沉积物组成的过程似乎也影响生物多样性的分布格局，这表明造成这两种格局的过程之间存在共同的相互作用。
Abstract. Lake Ohrid is likely of Pliocene age and thus commonly referred to as the oldest existing lake in Europe. In this study spatial variability of recent sediment composition is assessed using >50 basin wide distributed surface sediment samples. Analysis of biogeochemical bulk parameters, selected metals, pigment concentrations as well as grain size distributions revealed a significant spatial heterogeneity in surface sediment composition. It implies that sedimentation in Lake Ohrid is controlled by an interaction of multiple natural and anthropogenic factors and processes. Major factors controlling surface sediment composition are related to differences in geological catchment characteristics, anthropogenic land use, and a counterclockwise rotating surface water current. In some instances processes controlling sediment composition also seem to impact distribution patterns of biodiversity, which suggests a common interaction of processes responsible for both patterns.