Population dynamics of four dominant copepods in Prydz Bay, Antarctica, during austral summer from 1999 to 2006

doi:10.1007/s00343-011-0230-4

	Population dynamics of four dominant copepods in Prydz Bay, Antarctica, during austral summer from 1999 to 2006
	Yang Guang 1,2; Li Chaolun1 ; Sun Song1,3
	2011-09-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	29 期号:5 页码:1065-1074
文章类型	Article
摘要	Population dynamics of four dominant Antarctic copepods, Calanoides acutus, Calanus propinquus, Metridia gerlachei and Rhincalanus gigas were studied based on zooplankton samples collected in the Prydz Bay during austral summer from 1999 to 2006. We found that C. acutus was the most abundant species among these four copepods, followed by C. propinquus, M. gerlachei and R. gigas. R. gigas occurred mainly in the warmer oceanic regions and showed distribution patterns discrete from the other three species, whose distribution in the whole survey area overlapped. By December 15(th) (about one month before our sampling) of the years 1999, 2003 and 2006, sea ice retreated earlier and polynyas existed in the neritic region one month before sampling. These periods were characterized by numerical dominance of C. acutus, C. propinquus and M. gerlachei, elevated proportions of Copepodite I and Copepodite II stages especially in the neritic region. While for the years 2000, 2002, and 2005, the ice edge located more northerly and polynyas did not exist in the neritic region, the copepods abundance was lower, indicating poor recruitment. Population structure of R. gigas was mainly composed of advanced stages Copepodite V and female during all cruises. Log(10) (x+1) transformed densities of C. acutus, C. propinquus and M. gerlachei showed positive correlation with temperature and chlorophyll a concentration, while mean population stages of these copopods were negatively correlated with these environmental variables. Younger copepodite stages of C. acutus, C. propinquus and M. gerlachei appeared more often in neritic regions. We confirmed that the polynyas had a great contribution to phytoplankton blooms, which promote copepods reproduction and recruitment success. The study suggested that population dynamics of the four copepods have good correspondence with sea ice and polynya variations during all cruises of the Prydz Bay.; Population dynamics of four dominant Antarctic copepods, Calanoides acutus, Calanus propinquus, Metridia gerlachei and Rhincalanus gigas were studied based on zooplankton samples collected in the Prydz Bay during austral summer from 1999 to 2006. We found that C. acutus was the most abundant species among these four copepods, followed by C. propinquus, M. gerlachei and R. gigas. R. gigas occurred mainly in the warmer oceanic regions and showed distribution patterns discrete from the other three species, whose distribution in the whole survey area overlapped. By December 15(th) (about one month before our sampling) of the years 1999, 2003 and 2006, sea ice retreated earlier and polynyas existed in the neritic region one month before sampling. These periods were characterized by numerical dominance of C. acutus, C. propinquus and M. gerlachei, elevated proportions of Copepodite I and Copepodite II stages especially in the neritic region. While for the years 2000, 2002, and 2005, the ice edge located more northerly and polynyas did not exist in the neritic region, the copepods abundance was lower, indicating poor recruitment. Population structure of R. gigas was mainly composed of advanced stages Copepodite V and female during all cruises. Log(10) (x+1) transformed densities of C. acutus, C. propinquus and M. gerlachei showed positive correlation with temperature and chlorophyll a concentration, while mean population stages of these copopods were negatively correlated with these environmental variables. Younger copepodite stages of C. acutus, C. propinquus and M. gerlachei appeared more often in neritic regions. We confirmed that the polynyas had a great contribution to phytoplankton blooms, which promote copepods reproduction and recruitment success. The study suggested that population dynamics of the four copepods have good correspondence with sea ice and polynya variations during all cruises of the Prydz Bay.
关键词	Copepods Population Structure Inter-annual Variations Prydz Bay Southern Ocean
学科领域	Marine & Freshwater Biology ; Oceanography
DOI	10.1007/s00343-011-0230-4
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000293632500020
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/11695
专题	海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Yang Guang,Li Chaolun,Sun Song. Population dynamics of four dominant copepods in Prydz Bay, Antarctica, during austral summer from 1999 to 2006[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2011,29(5):1065-1074.
APA	Yang Guang,Li Chaolun,&Sun Song.(2011).Population dynamics of four dominant copepods in Prydz Bay, Antarctica, during austral summer from 1999 to 2006.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,29(5),1065-1074.
MLA	Yang Guang,et al."Population dynamics of four dominant copepods in Prydz Bay, Antarctica, during austral summer from 1999 to 2006".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 29.5(2011):1065-1074.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Population dynamics （692KB）			限制开放	--	浏览