气候变化领域集成服务门户(CCPortal): Soil characteristics and Collembola and Acari abundance in control and warming plots at Abisco Research Station

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.807856
	Soil characteristics and Collembola and Acari abundance in control and warming plots at Abisco Research Station
	Bokhorst; Stef; Phoenix; Gareth K; Bjerke; Jarle W; Callaghan; Terry V; Huyer-Brugman; F; Berg; Matty P
发布日期	2012-02-22
数据集类型	dataset
英文简介	Extreme weather events can have negative impacts on species survival and community structure when surpassing lethal thresholds. Extreme winter warming events in the Arctic rapidly melt snow and expose ecosystems to unseasonably warm air (2-10 °C for 2-14 days), but returning to cold winter climate exposes the ecosystem to lower temperatures by the loss of insulating snow. Soil animals, which play an integral part in soil processes, may be very susceptible to such events depending on the intensity of soil warming and low temperatures following these events. We simulated week-long extreme winter warming events - using infrared heating lamps, alone or with soil warming cables - for two consecutive years in a sub-Arctic dwarf shrub heathland. Minimum temperatures were lower and freeze-thaw cycles were 2-11 times more frequent in treatment plots compared with control plots. Following the second event, Acari populations decreased by 39%; primarily driven by declines of Prostigmata (69%) and the Mesostigmatic nymphs (74%). A community-weighted vertical stratification shift occurred from smaller soil dwelling (eu-edaphic) Collembola species dominance to larger litter dwelling (hemi-edaphic) species dominance in the canopy-with-soil warming plots compared with controls. The most susceptible groups to these winter warming events were the smallest individuals (Prostigmata and eu-edaphic Collembola). This was not apparent from abundance data at the Collembola taxon level, indicating that life forms and species traits play a major role in community assembly following extreme events. The observed shift in soil community can cascade down to the micro-flora affecting plant productivity and mineralization rates. Short-term extreme weather events have the potential to shift community composition through trait composition with potentially large consequences for ecosystem development.
空间范围	Latitude: 68.350000 * Longitude: 18.817000
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/215542
推荐引用方式 GB/T 7714	Bokhorst,Stef,Phoenix,et al. Soil characteristics and Collembola and Acari abundance in control and warming plots at Abisco Research Station.2012-02-22.https://doi.org/10.1594/PANGAEA.807856.