Hydrography and biochemical indicators of microplankton biomass in the Bransfield Strait (Antarctica) during January 1994

被引:12
作者
Berdalet, E [1 ]
Vaque, D [1 ]
Arin, L [1 ]
Estrada, M [1 ]
Alcaraz, M [1 ]
Fernandez, JA [1 ]
机构
[1] UNIV MALAGA,FAC CIENCIAS,E-29071 MALAGA,SPAIN
关键词
D O I
10.1007/s003000050102
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
The relationships between hydrography and spatial distribution of several biochemical indicators of microplankton biomass (chlorophyll, protein and ATP) were studied in an area covering the eastern part of the Bransfield Strait and the northern part of the Weddell Sea, during Antarctic summer (January 1994). Four hydrographic zones were identified: (a) the northern part of the Bransfield Strait, covered by waters of Bellingshausen Sea origin; (b) a Weddell Sea water mass that affected most of the study area; (c) the Weddell-Scotia Confluence waters, observed north of Elephant Island; and(d) waters influenced by ice melting, found towards the southeastern part of the sampled area. The highest values of biomass indicators (chlorophyll a, ATP and protein) were found in the zones affected by ice-melting processes and in waters from the Bellingshausen Sea. The lowest Values of all biochemical parameters were found in the Weddell Sea and in the Weddell-Scotia Confluence waters. A high variability in the hydrographic structure and the distribution of biochemical indicators was observed. The degree of stabilization of the water column, the depth of the upper mixed layer and the grazing pressure of herbivorous zooplankton played a major role in the development, accumulation and spatial variability of microplankton biomass.
引用
收藏
页码:31 / 38
页数:8
相关论文
共 54 条
[1]  
ALCARAZ M, 1996, IN PRESS J MAR SYST
[2]  
BIANCHI F, 1992, POLAR BIOL, V12, P225
[3]  
DHARGALKAR VK, 1992, INDIAN J MAR SCI, V21, P1
[4]   NITROGEN STORAGE AND USE OF BIOCHEMICAL INDEXES TO ASSESS NITROGEN DEFICIENCY AND GROWTH-RATE IN NATURAL PLANKTON POPULATIONS [J].
DORTCH, Q ;
CLAYTON, JR ;
THORESEN, SS ;
CLEVELAND, JS ;
BRESSLER, SL ;
AHMED, SI .
JOURNAL OF MARINE RESEARCH, 1985, 43 (02) :437-464
[5]   PRIMARY PRODUCTION AND STANDING CROP OF PHYTOPLANKTON ALONG THE ICE-EDGE IN THE WEDDELL SEA [J].
ELSAYED, SZ ;
TAGUCHI, S .
DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1981, 28 (09) :1017-1032
[6]  
ELSAYED SZ, 1983, DEEP-SEA RES, V308, P721
[7]  
ELSAYED SZ, 1993, ANTARCTIC MICROBIOLO
[8]  
ELSAYED SZ, 1971, BIOL ANTARCTIC SEAS, V4
[9]   PARTICULATE MATTER COMPOSITION AND BACTERIAL DISTRIBUTION IN TERRA-NOVA BAY (ANTARCTICA) DURING SUMMER 1989-1990 [J].
FABIANO, M ;
DANOVARO, R ;
CRISAFI, E ;
LAFERLA, R ;
POVERO, P ;
ACOSTAPOMAR, L .
POLAR BIOLOGY, 1995, 15 (06) :393-400
[10]  
FABIANO M, 1993, POLAR BIOL, V13, P525