气候变化领域集成服务门户(CCPortal): Eco-physiological data on Laminaria solidungula and Saccharina latissima from Kongsfjorden, Spitsbergen, during the polar night 2016/17

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DOI	https://doi.org/10.1594/PANGAEA.903529
	Eco-physiological data on Laminaria solidungula and Saccharina latissima from Kongsfjorden, Spitsbergen, during the polar night 2016/17
	Scheschonk; Lydia; Becker; Stefan; Hehemann; Laura; Diehl; Nora; Karsten; Ulf; Bischof; Kai
发布日期	2019-07-04
数据集类型	dataset
英文关键词	Arctic ; climate change ; Eco-physiology ; kelps ; Kongsfjorden ; polar night ; Svalbard
英文简介	Kelps, perennial brown seaweeds of the order Laminariales, are foundational species in Arctic coastal ecosystems. Presently, their ability to persist under polar night conditions might be significantly affected by increasing winter temperatures. We assessed physiological parameters (photosynthesis, pigment content, respiration, carbohydrate storage) in two species of Arctic kelp, the boreal-temperate Saccharina latissima and the Arctic-endemic Laminaria solidungula, during the polar night 2016/17. Algae were sampled from Kongsfjorden, Svalbard, 78° 55' N, shortly before the onset of the dark period in October, and at the end of the polar night in early February. Analyses were conducted for different tissue sections along the phylloid (Meristem, Centre Region, Distal Region). Data suggest that kelp maintain their photosynthetic competence throughout the entire winter period, as indicated by PE-curve-parameters, and photosynthetic pigment contents. Overall laminarin content was reduced by 96 % in S. latissima, and by 90 % in L. solidungula during winter indicating that this storage glucan fuelled metabolic function during the polar night. Marked differences in laminarin content between the phylloid regions and across species indicated specific adaptive mechanisms between boreal-temperate and Arctic-endemic kelp. We suggest that laminarin turnover represents a sensitive parameter to assess kelp physiology under a changing temperature regime.
空间范围	Median Latitude: 78.954000 * Median Longitude: 11.938000 * South-bound Latitude: 78.930000 * West-bound Longitude: 11.930000 * North-bound Latitude: 78.990000 * East-bound Longitude: 11.950000
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215143
推荐引用方式 GB/T 7714	Scheschonk,Lydia,Becker,et al. Eco-physiological data on Laminaria solidungula and Saccharina latissima from Kongsfjorden, Spitsbergen, during the polar night 2016/17.2019-07-04.https://doi.org/10.1594/PANGAEA.903529.