Journal of Guangxi Normal University(Natural Science Edition) ›› 2015, Vol. 33 ›› Issue (1): 152-158.doi: 10.16088/j.issn.1001-6600.2015.01.025

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Trophic Structure of the Cave Comminity of Laizi Cave and QingcaiCave of Karst Cave in Guizhou: a Stable Isotope Analysis

ZHOU Gu-chun, XU Cheng-xiang, LI Dao-Hong, LUO Qing-Huai   

  1. College of Life Sciences, Guizhou Normal University, Guiyang Guizhou 550001, China
  • Received:2014-12-31 Online:2015-03-15 Published:2018-09-17

Abstract: Stable isotope analysis (δ13C and δ15N) in karst’s cave ecosystem of Qingcai cave and Laizi cave of Guizhou Province is applied to study food webs and trophic level relationship. The results shows that the carbon source in food chain of Qingcai cave and Laizi cave is mainly from SOM and POM such as bat feces, as the first trophic level, i.e., the primary producers. Molluscan snails and arthropod of cave (Diestrammena (Gymnaeta) sp. and Pacidesmus sp.) mainly feed on SOM and POM, as the second trophic level, i.e., the primary consumers. The spiders on the arthropod and vertebrate mainly feed on other animals, as the third trophic level, i.e., the secondary consumer. The enrichment factor of Δδ15N in Qingcai cave is 2.9 ‰, and in Laizi cave is 2.46 ‰.

Key words: food webs, stable isotope, Qingcai cave, Laizi cave, Guizhou Province

CLC Number: 

  • Q958.1
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