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首页> 外文期刊>Acta Societatis Botanicorum Poloniae >Revision of Nymphaea candida range - new data on the distribution and habitat preferences of the species in southern Poland
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Revision of Nymphaea candida range - new data on the distribution and habitat preferences of the species in southern Poland

机译：Nymphaea candida range的修订-波兰南部该物种的分布和栖息地偏好的新数据

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The paper presents results of geobotanical and taxonomic studies on the distribution and habitat requirements of Nymphaea candida in southern Poland. The researches were conducted in southern Poland in 2003-2009, in the provinces of Lower Silesia, Lublin, Ma?opolska, Opole, Silesian province as well as, in southern parts of Mazowieckie and Lubuskie. Flowers, leaves and fruits of Nymphaea species were collected from 27 locations. Altogether pollens from 73 populations of N. candida and 18 of N. alba from all the researched area were measured. The trophic level of an ecosystem was evaluated according to the results of the total nitrogen, total phosphorus, chlorophyll a, transparency and biological parameters. As the result of the studies of more than 200 water bodies, 57 localities of N. candida were documented within the investigation area. The populations of N. candida occupy mid-forest water bodies and river ox-bow lakes. A significant number of populations was also found in artificial reservoirs - fish ponds. The most suitable habitat conditions for N. candida occur in shallow waters in the shore zone with the amplitude of the water column vary from 0.5 to 2 m. Regarding the trophy level, N. candida occupies different habitats, mainly mesotrophic and also eutrophic with high content of organic matters. Considering the 15 checked morphological parameters, especially the stigma diameter, the number of carpellary teeth, flower and pollen diameters, the found and collected specimens of N. candida significantly differ from N. alba. The study confirms that N. candida ocurrs in whole lowland Poland without any regional distribution gaps. According to the IUCN guidelines to species assessment the data gathered during the presented study do not allow to classify N. candida as a vulnerable species in Poland. Still existing populations for more than 150 years, numerous stable locations, abundant populations, a habitat accessibility, a biotope extent, an ecological amplitude against the trophy level and direct human impacts suggest, that the species should be regarded as a least concern (LC) taxon.
机译：本文介绍了有关波兰南部念珠菌分布和栖息地需求的植物学和分类学研究结果。这项研究于2003年至2009年在波兰南部，下西里西亚，卢布林，马波波斯卡，奥波莱，西里西亚省以及马佐维奇和卢布斯基的南部地区进行。从27个地点收集了睡莲物种的花，叶和果实。测量了来自所有研究区域的73个念珠菌和18个念珠菌的花粉。根据总氮，总磷，叶绿素a，透明度和生物学参数的结果评估了生态系统的营养水平。对200多个水体进行研究的结果是，在调查区域内记录了念珠菌57个地区。念珠菌的人口居住在中部森林水体和河牛弓湖泊中。在人工水库（鱼池）中也发现了大量种群。念珠菌的最适宜生境条件发生在海岸带的浅水区，水柱的振幅在0.5至2 m之间变化。关于奖杯水平，念珠菌存在于不同的生境中，主要是中营养的和富营养的，其中有机物的含量很高。考虑到15个检查的形态学参数，尤其是柱头直径，食齿数，花和花粉直径，发现和收集的念珠菌标本与白念珠菌明显不同。研究证实，念珠菌存在于整个波兰低地，没有任何区域分布差异。根据自然保护联盟的物种评估准则，在本研究期间收集的数据不允许将念珠菌归为波兰的脆弱物种。仍然存在150多年的种群，众多稳定的地点，丰富的种群，栖息地的可及性，生物群落的范围，对战利品水平的生态幅值以及直接的人类影响表明，应将该物种视为最不用关注的物种（LC）分类单元。

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