NUTRIENT LIMITATION OF PHYTOPLANKTON GROWTH IN BRACKISH COASTAL PONDS

被引：55

作者：

CARACO, N

TAMSE, A

BOUTROS, O

VALIELA, I

机构：

[1] BOSTON UNIV, MARINE PROGRAM, MARINE BIOL LAB, WOODS HOLE, MA 02543 USA

[2] UNIV PITTSBURGH, BRADFORD, PA 16701 USA

来源：

CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES | 1987年 / 44卷 / 02期

关键词：

D O I：

10.1139/f87-056

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

In general, the nutrient most limiting to phytoplankton growth is phosphorus in freshwaters and nitrogen in the sea. We investigated the effect of N and P enrichment to waters from seven brackish, coastal ponds ranging in salinity from 0 to 31 ppt and to nearby coastal seawater (32 ppt). Phytoplankton from the least saline ponds (0-6.5 ppt) responded to P additions, and biomass increased 2-6 times over unenriched controls. Nitrogen additions stimulated phytoplaknton growth only in waters from the most saline coastal pond (31 ppt) and seawater. Phytoplankton from ponds of intermediate salinity did not respond when either N or P was added alone but, as in all ponds, increased greatly in biomass when N and P were added in combination. The high salinity at which a switch from P to N limitation occurred could be due to the high N:P loading ratios to these ponds.

引用

页码：473 / 476

页数：4

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