Hydrilla verticillata (Hydrocharitaceae) is a submerged freshwater flowering plant within the monotypic genus. Over the geological periods, fossils of this family and genus have shown distinct diversifications between warm and cool fluctuations with more adaptations occurring in warmer periods and suppressions during severely cold paleoclimate changes. Recently, H. verticillata has shown a wide range of adaptive plasticity, allowing successful proliferation into non-native regions, whilst also undergoing unexplained disappearance from its native localities, and this phenomenon has stimulated this inquiry. Against this somewhat complex background, particular interest for this investigation has been focussed on an understanding of which aspects of climate change have contributed towards global adaptations and distribution patterns of H. verticillata. Whilst it is recognised that some of these changes are natural, other aggravating impacts are due to anthropogenic influences. Identifying the appropriate combinations of these climatic factors (temperature, rainfall, photoperiod), in concert with environmental (water level, CO₂, salinity, eutrophication), geographical (altitude, latitude) and other factors (UV-B) are necessary precursors for instituting appropriate management strategies. In this respect, control measures are needed in non-native regions and restoration of this plant in native habitats are essential for its ecologically balanced global distribution.

中文翻译：

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影响 Hydrilla verticillata (L. fil.) Royle 全球分布的因素：综述

Hydrilla verticillata (Hydrocharitaceae) 是单型属内的一种沉水淡水开花植物。在地质时期，该科和属的化石在温暖和凉爽的波动之间表现出明显的多样化，更多的适应发生在温暖时期，而在严重寒冷的古气候变化中则受到抑制。近来，轮枝菌已经显示出广泛的适应性可塑性，允许成功扩散到非本土地区，同时也从其本土地区发生无法解释的消失，这种现象激发了这种探索。在这种有点复杂的背景下，这项调查的特别兴趣集中在了解气候变化的哪些方面对H 的全球适应和分布模式做出了贡献。轮枝菌。虽然人们认识到其中一些变化是自然的，但其他加剧的影响是由于人为影响。确定这些气候因素（温度、降雨量、光周期）与环境（水位、CO ₂、盐度、富营养化）、地理（海拔、纬度）和其他因素 (UV-B) 是制定适当管理策略的必要前提。在这方面，需要在非本土地区采取控制措施，在本土栖息地恢复这种植物对于其生态平衡的全球分布至关重要。