SOME EFFECTS OF SOIL-MOISTURE AVAILABILITY ON ABOVE-GROUND PRODUCTION AND REPRODUCTIVE ALLOCATION IN LARREA-TRIDENTATA (DC) COV

被引：45

作者：

CUNNINGHAM, GL

SYVERTSEN, JP

REYNOLDS, JF

WILLSON, JM

机构：

[1] Biology Department, New Mexico State University, Las Cruces, 88003, NM

来源：

OECOLOGIA | 1979年 / 40卷 / 02期

关键词：

D O I：

10.1007/BF00347929

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Data from the US/IBP Desert Biome validation studies indicate that above-ground production and biomass allocated to reproduction in Larrea tridentata vary from one year to another depending upon the timing and extent of soil-moisture availability. In an attempt to verify these observations and determine to what extent water availability can affect total aboveground production and reproductive allocation in this widely distributed warm desert shrub, a series of soil-moisture augmentation experiments were conducted. High levels of soil moisture had a greater effect on reproductive allocation than on total above-ground production. Enhanced soil moisture during the period of active growth increased total above-ground production and reduced the percentage of biomass allocated to reproduction. Enhanced soil moisture during the normal periods of little or no growth did not increase total above-ground production. © 1979 Springer-Verlag.

引用

页码：113 / 123

页数：11

共 10 条

[1]

BALDING F R, 1974, Southwestern Naturalist, V19, P241, DOI 10.2307/3669928

[2]

BALDING FR, 1971, THESIS NEW MEXICO ST

[3] COMPARISON OF SEASONAL PRIMARY PRODUCTION OF MOJAVE-DESERT SHRUBS DURING WET AND DRY YEARS [J].