气候变化领域集成服务门户(CCPortal): Predator nonconsumptive effects on prey recruitment weaken with recruit density, supplementary material

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.857409
	Predator nonconsumptive effects on prey recruitment weaken with recruit density, supplementary material
	Ellrich; Julius A; Scrosati; Ricardo A; Molis; Markus
发布日期	2016-01-26
数据集类型	dataset
英文简介	We investigated the nonconsumptive effects (NCEs) of predatory dogwhelks (Nucella lapillus) on intertidal barnacle (Semibalanus balanoides) recruitment through field experiments on the Gulf of St. Lawrence coast and the Atlantic coast of Nova Scotia, Canada. We studied the recruitment seasons (May-June) of 2011 and 2013. In 2011, the Gulf coast had five times more nearshore phytoplankton (food for barnacle larvae and recruits) during the recruitment season and yielded a 58% higher barnacle recruit density than the Atlantic coast at the end of the recruitment season. In 2013, phytoplankton levels and barnacle recruit density were similar on both coasts and also lower than for the Gulf coast in 2011. Using the comparative-experimental method, the manipulation of dogwhelk presence (without allowing physical contact with prey) revealed that dogwhelk cues limited barnacle recruitment under moderate recruit densities (Atlantic 2011/2013 and Gulf 2013) but had no effect under a high recruit density (Gulf 2011). Barnacle recruits attract settling larvae through chemical cues. Thus, the highest recruit density appears to have neutralized dogwhelk effects. This study suggests that the predation risk perceived by settling larvae may decrease with increasing recruit density and that prey food supply may indirectly influence predator NCEs on prey recruitment.
空间范围	Median Latitude: 45.533340 * Median Longitude: -61.683333 * South-bound Latitude: 45.200000 * West-bound Longitude: -62.133330 * North-bound Latitude: 45.766700 * East-bound Longitude: -61.166700
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/216904
推荐引用方式 GB/T 7714	Ellrich,Julius A,Scrosati,et al. Predator nonconsumptive effects on prey recruitment weaken with recruit density, supplementary material.2016-01-26.https://doi.org/10.1594/PANGAEA.857409.