气候变化领域集成服务门户(CCPortal): (Table 3) Growth rates of the juvenile polychaete Scolelepis squamata obtained from ice cores under varying conditions

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.816073
	(Table 3) Growth rates of the juvenile polychaete Scolelepis squamata obtained from ice cores under varying conditions
	McConnell; Brenna; Gradinger; Rolf; Iken; Katrin; Bluhm; Bodil Annikki
发布日期	2012-06-26
数据集类型	dataset
英文简介	In spring, Arctic coastal fast ice is inhabited by high densities of sea ice algae and, among other fauna, juveniles of benthic polychaetes. This paper investigates the hypothesis that growth rates of juveniles of the common sympagic polychaete, Scolelepis squamata (Polychaeta: Spionidae), are significantly faster at sea ice algal bloom concentrations compared to concurrent phytoplankton concentrations. Juvenile S. squamata from fast ice off Barrow, Alaska, were fed with different algal concentrations at 0 and 5 °C, simulating ambient high sea ice algal concentrations, concurrent low phytoplankton concentrations, and an intermediate concentration. Growth rates, calculated using a simple linear regression equation, were significantly higher (up to 115 times) at the highest algal concentration compared to the lowest. At the highest algal concentration, juveniles grew faster at 5 °C compared to those feeding at 0 °C with a Q10 of 2.0. We conclude that highly concentrated sea ice algae can sustain faster growth rates of polychaete juveniles compared to the less dense spring phytoplankton concentrations. The earlier melt of Arctic sea ice predicted with climate change might cause a mismatch between occurrence of polychaete juveniles and food availability in the near future. Our data indicate that this reduction in food availability might counteract any faster growth of a pelagic juvenile stage based on forecasted increased water temperatures.
空间范围	Median Latitude: 71.345575 * Median Longitude: -156.611365 * South-bound Latitude: 71.328320 * West-bound Longitude: -156.694400 * North-bound Latitude: 71.362830 * East-bound Longitude: -156.528330
时间范围	2007-04-27T00:00:00 - 2008-06-02T00:00:00
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/217589
推荐引用方式 GB/T 7714	McConnell,Brenna,Gradinger,et al. (Table 3) Growth rates of the juvenile polychaete Scolelepis squamata obtained from ice cores under varying conditions.2012-06-26.https://doi.org/10.1594/PANGAEA.816073.