PHYTOPLANKTON AND PRIMARY PRODUCTION OF LAKES IN THE MATAMEK WATERSHED, QUEBEC

被引：15

作者：

JANUS, LL

DUTHIE, HC

机构：

[1] St George Research Station, Oak Ridges, LOG 1PO

[2] Department of Biology, University of Waterloo, Waterloo, Ontario

来源：

INTERNATIONALE REVUE DER GESAMTEN HYDROBIOLOGIE | 1979年 / 64卷 / 01期

关键词：

D O I：

10.1002/iroh.19790640108

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The productivity of three Shield lakes on Quebec's North Shore was found to be comparable with that of the most oligotrophic lakes known. Factors contributing to this condition may be that the moderately sized lakes of this study are deep relative to their surface areas, highly stained by humic substances, of very low conductivity, and contain little dissolved CO2. Standing crops of phytoplankton are very low, never exceeding 600 mg/m3. Chrysophyceae are dominant over all other classes of algae in both biomass and numbers, comprising approximately 50% of the fresh weight throughout the season. The abundance of micro‐flagellates implies a large surface area to volume ratio and the ability to move are an advantage in a nutrient poor environment. Much of the phytoplankton present may grow heterotrophically and energy additions from the terrestrial environment may be extremely important to the productivity of northern lakes when photosynthetic production is not significant. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：89 / 98

页数：10

共 25 条

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