EFFECTS OF CLIMATIC WARMING ON LAKES OF THE CENTRAL BOREAL FOREST

被引：376

作者：

SCHINDLER, DW ^{[1
]}

BEATY, KG ^{[1
]}

FEE, EJ ^{[1
]}

CRUIKSHANK, DR ^{[1
]}

DEBRUYN, ER ^{[1
]}

FINDLAY, DL ^{[1
]}

LINSEY, GA ^{[1
]}

SHEARER, JA ^{[1
]}

STAINTON, MP ^{[1
]}

TURNER, MA ^{[1
]}

机构：

[1] FISHERIES & OCEANS CANADA,CENT & ARCT REG,INST FRESHWATER,WINNIPEG R3T 2N6,MANITOBA,CANADA

来源：

SCIENCE | 1990年 / 250卷 / 4983期

关键词：

D O I：

10.1126/science.250.4983.967

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Twenty years of climatic, hydrologic, and ecological records for the Experimental Lakes Area of northwestern Ontario show that air and lake temperatures have increased by 2°C and the length of the ice-free season has increased by 3 weeks. Higher than normal evaporation and lower than average precipitation have decreased rates of water renewal in lakes. Concentrations of most chemicals have increased in both lakes and streams because of decreased water renewal and forest fires in the catchments. In Lake 239, populations and diversity of phytoplankton also increased, but primary production showed no consistent trend. Increased wind velocities, increased transparency, and increased exposure to wind of lakes in burned catchments caused thermoclines to deepen. As a result, summer habitats for cold stenothermic organisms like lake trout and opposum shrimp decreased. Our observations may provide a preview of the effects of increased greenhouse warming on boreal lakes.

引用

页码：967 / 970

页数：4

共 47 条

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