Increases of Chamber Height and Base Diameter Have Contrasting Effects on Grazing Rate of Two Cladoceran Species: Implications for Microcosm Studies

	Increases of Chamber Height and Base Diameter Have Contrasting Effects on Grazing Rate of Two Cladoceran Species: Implications for Microcosm Studies
	Pan, Ying; Zhang, Yunshu; Peng, Yan; Zhao, Qinghua; Sun, Shucun
刊名	PLOS ONE
	2015
卷号	10 期号:8 页码:-
关键词	AIR-WATER-INTERFACE MOINA-MICRURA KURZ DAPHNIA-MAGNA SWIMMING BEHAVIOR MICROCYSTIS-AERUGINOSA BODY-SIZE FOOD OXYGEN PULEX PHYTOPLANKTON
通讯作者	Sun, SC (reprint author), Nanjing Univ, Dept Biol, Nanjing 210093, Jiangsu, Peoples R China.
产权排序	3
合作状况	国内
英文摘要	Aquatic microcosm studies often increase either chamber height or base diameter (to increase water volume) to test spatial ecology theories such as "scale" effects on ecological processes, but it is unclear whether the increase of chamber height or base diameter have the same effect on the processes, i.e., whether the effect of the shape of three-dimensional spaces is significant. We orthogonally manipulated chamber height and base diameter and determined swimming activity, average swimming velocity and grazing rates of the cladocerans Daphnia magna and Moina micrura (on two algae Scenedesmus quadricauda and Chlorella vulgaris; leading to four aquatic algae-cladoceran systems in total) under different microcosm conditions. Across all the four aquatic systems, increasing chamber height at a given base diameter significantly decreased the duration and velocity of horizontal swimming, and it tended to increase the duration but decrease the velocity of vertical swimming. These collectively led to decreases in both average swimming velocity and grazing rate of the cladocerans in the tall chambers (at a given base diameter), in accordance with the positive relationship between average swimming velocity and grazing rate. In contrast, an increase of base diameter at a given chamber height showed contrasting effects on the above parameters. Consistently, at a given chamber volume increasing ratio of chamber height to base diameter decreased the average swimming velocity and grazing rate across all the aquatic systems. In general, increasing chamber depth and base diameter may exert contrasting effects on zooplankton behavior and thus phytoplankton-zooplankton interactions. We suggest that spatial shape plays an important role in determining ecological process and thus should be considered in a theoretical framework of spatial ecology and also the physical setting of aquatic microcosm experiments.
学科主题	Science & Technology - Other Topics
类目[WOS]	Multidisciplinary Sciences
语种	英语
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/27505]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Pan, Ying,Zhang, Yunshu,Peng, Yan,et al. Increases of Chamber Height and Base Diameter Have Contrasting Effects on Grazing Rate of Two Cladoceran Species: Implications for Microcosm Studies[J]. PLOS ONE,2015,10(8):-.
APA	Pan, Ying,Zhang, Yunshu,Peng, Yan,Zhao, Qinghua,&Sun, Shucun.(2015).Increases of Chamber Height and Base Diameter Have Contrasting Effects on Grazing Rate of Two Cladoceran Species: Implications for Microcosm Studies.PLOS ONE,10(8),-.
MLA	Pan, Ying,et al."Increases of Chamber Height and Base Diameter Have Contrasting Effects on Grazing Rate of Two Cladoceran Species: Implications for Microcosm Studies".PLOS ONE 10.8(2015):-.