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The morphology and geomorphic evolution of a large chain-of-ponds river system

机译:大型池塘河流系统的形态学和地貌演变

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Rivers with discontinuous watercourses are part of the spectrum of river diversity. Chain-of-ponds types contain irregularly spaced, steep-sided ponds that are separated by preferential flow paths on swampy valley fill. They often contain endangered ecological communities and are receiving greater attention for conservation and restoration. Very little is known about how these river types form, how they have evolved and how they function. Here we present the Late-Quaternary evolution of one of the last remaining large-scale chain-of-ponds systems in Australia, the Mulwaree Ponds. The chain-of-ponds was fully formed by 4.5 ka, with the position and alignment of the ponds being related to the position of pools of a palaeo-river that is up to 100 ka old. Contemporary hydrogeomorphic processes are insufficient to create the ponds, but sufficient to maintain and keep them open. The phases of evolution for this chain-of-ponds system are synchronous with Late-Quaternary changes in fluvial activity documented for other rivers in southeastern Australia. The ponds at Mulwaree have significant preservation potential over thousands of years. In the current landscape they are rare forms, providing significant grounds for conservation and protection of their distinctive geodiversity. (c) 2020 John Wiley & Sons, Ltd.
机译:具有不连续水道的河流是河流频谱的一部分。池塘链类型含有不规则的间隔,陡峭的池塘,通过沼泽谷填充的优先流动路径分开。他们经常包含濒危生态社区,并受到更大的关注,可以保护和恢复。非常熟悉这些河流类型的形式,它们如何发展以及它们如何运作。在这里,我们展示了澳大利亚最后一个大型池塘系统之一的延迟时间演变,Mulwaree Ponds。池塘链条完全由4.5 ka形成,池塘的位置和对准与古河河流池的位置有关,最高可达100 ka旧的。当代水文术方法不足以创造池塘,但足以保持并保持打开。这种池塘系统的演化阶段与澳大利亚东南部其他河流的河流活动中的晚期季度变化同时。 Mulwaree的池塘有超过数千年的保存潜力。在目前的景观中,它们是罕见的形式,提供了保护和保护他们独特的大学生的重要原因。 (c)2020 John Wiley&Sons,Ltd。

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