Glacial relicts in the Alps: the decline and conservation strategy for Nuphar pumila (Nymphaeaceae)

IF 2.6 3区 生物学 Q2 PLANT SCIENCES
Sébastien Bétrisey, Nils Arrigo, Larissa Graf, Julia Bilat, Emanuel Gerber, Gregor Kozlowski
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引用次数: 4

Abstract

The Alps played an important role in the biogeography of European plants and acted as a refugium for numerous species during the interglacial cycles. We investigated Nuphar pumila, one of the most emblematic glacial relicts of the Alps, by carrying out exhaustive literature and field surveys to collect relevant data on its distribution and threats. We further evaluated the level of introgression with the closely related N. lutea based on microsatellite data from natural populations across the Alps as well as from all ex situ collections and reintroductions in Switzerland. According to our results, more than 60% of the known N. pumila populations went extinct, and the species currently presents 37 natural populations in the investigated area. A large number of populations were affected by eutrophication (69%) and hybridization with N. lutea (53%). Priority should be given to the in situ conservation of genetically pure populations, while ex situ cultures should be applied to nearly extinct populations and the genetically pure individuals still present in hybrid populations. N. pumila is an excellent representative of the wetland/aquatic glacial relicts that are particularly affected by the combination of climate change and habitat degradation. International integration of research and conservation programs is needed to limit the decline of such rare species in the Alps.

阿尔卑斯山的冰川遗迹:睡莲科(Nuphar pumila)的衰落与保护策略
阿尔卑斯山在欧洲植物的生物地理学中发挥着重要作用,并在间冰期成为许多物种的避难所。我们通过详尽的文献和实地调查,收集了有关其分布和威胁的相关数据,对阿尔卑斯山最具象征性的冰川遗迹之一Nuphar pumila进行了调查。我们根据阿尔卑斯山自然种群以及瑞士所有迁地采集和重新引入的微卫星数据,进一步评估了与木犀属亲缘关系密切的木犀的渗入水平。根据我们的研究结果,超过60%的已知N.pumila种群已经灭绝,该物种目前在调查地区有37个自然种群。大量种群受到富营养化(69%)和与木犀杂交(53%)的影响。应优先考虑基因纯种群的原位保护,而迁地培养应适用于几乎灭绝的种群和仍然存在于杂交种群中的基因纯个体。N.pumila是湿地/水生冰川遗迹的优秀代表,这些遗迹尤其受到气候变化和栖息地退化的影响。需要将研究和保护计划进行国际整合,以限制阿尔卑斯山此类稀有物种的减少。
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来源期刊
Alpine Botany
Alpine Botany PLANT SCIENCES-
CiteScore
5.10
自引率
18.50%
发文量
15
审稿时长
>12 weeks
期刊介绍: Alpine Botany is an international journal providing a forum for plant science studies at high elevation with links to fungal and microbial ecology, including vegetation and flora of mountain regions worldwide.
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