Influence of different ecological groups of earthworms on the intensity of nitrogen fixation

被引：5

作者：

Tereshchenko, NN

Naplekova, NN

机构：

[1] Siberian Res Peat Inst, Tomsk 634050, Russia

[2] Novosibirsk State Agrarian Univ, Novosibirsk 630039, Russia

来源：

BIOLOGY BULLETIN | 2002年 / 29卷 / 06期

关键词：

Nitrogen; Microbial Community; Nitrogen Fixation; Organic Substrate; Ecological Group;

D O I：

10.1023/A:1021736513412

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The results of studying nitrogen fixation in organic substrates processed by different ecological groups of earthworms suggest that the earthworms Aporrectiodea caliginosa actively stimulate nonsymbiotic nitrogen fixation. In this respect, they exceed the manure worms Eizenia foetida tens of times due to the formation in the organic substrate of conditions favorable for the nitrogen fixing bacteria, and namely: low content of nitrogen easily accessible for microorganisms, changes in the structure of the microbial community of the substrate in favor of non-spore forms of bacteria, and suppression of the growth of saprophyte bacilli, the main competitors of nitrogen fixing bacteria for carbon nourishment sources.

引用

页码：628 / 632

页数：5