气候变化领域集成服务门户(CCPortal): Substantial vegetation response to Early Jurassic global warming with impacts on oceanic anoxia

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DOI	10.1038/s41561-019-0349-z
	Substantial vegetation response to Early Jurassic global warming with impacts on oceanic anoxia
	Slater S.M.; Twitchett R.J.; Danise S.; Vajda V.
发表日期	2019
ISSN	17520894
EISSN	1752-0908
卷号	12 期号:6 页码:462-+
英文摘要	Rapid global warming and oceanic oxygen deficiency during the Early Jurassic Toarcian Oceanic Anoxic Event at around 183 Ma is associated with a major turnover of marine biota linked to volcanic activity. The impact of the event on land-based ecosystems and the processes that led to oceanic anoxia remain poorly understood. Here we present analyses of spore–pollen assemblages from Pliensbachian–Toarcian rock samples that record marked changes on land during the Toarcian Oceanic Anoxic Event. Vegetation shifted from a high-diversity mixture of conifers, seed ferns, wet-adapted ferns and lycophytes to a low-diversity assemblage dominated by cheirolepid conifers, cycads and Cerebropollenites-producers, which were able to survive in warm, drought-like conditions. Despite the rapid recovery of floras after Toarcian global warming, the overall community composition remained notably different after the event. In shelf seas, eutrophication continued throughout the Toarcian event. This is reflected in the overwhelming dominance of algae, which contributed to reduced oxygen conditions and to a marked decline in dinoflagellates. The substantial initial vegetation response across the Pliensbachian/Toarcian boundary compared with the relatively minor marine response highlights that the impacts of the early stages of volcanogenic global warming were more severe for continental ecosystems than marine ecosystems. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
WOS研究方向	Geology
scopus关键词	anoxic conditions; community composition; coniferous tree; dicotyledon; dinoflagellate; fern; global warming; Jurassic; marine ecosystem; pollen; spore; terrestrial ecosystem; Toarcian; vegetation type; algae; Coniferophyta; Cycadopsida; Dinophyceae; Filicophyta; Lycopodiophyta
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/98186
作者单位	Department of Palaeobiology, Swedish Museum of Natural History, Stockholm, Sweden; Department of Earth Sciences, The Natural History Museum, London, United Kingdom; Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Florence, Italy
推荐引用方式 GB/T 7714	Slater S.M.,Twitchett R.J.,Danise S.,et al. Substantial vegetation response to Early Jurassic global warming with impacts on oceanic anoxia[J],2019,12(6):462-+.
APA	Slater S.M.,Twitchett R.J.,Danise S.,&Vajda V..(2019).Substantial vegetation response to Early Jurassic global warming with impacts on oceanic anoxia.Nature Geoscience,12(6),462-+.
MLA	Slater S.M.,et al."Substantial vegetation response to Early Jurassic global warming with impacts on oceanic anoxia".Nature Geoscience 12.6(2019):462-+.