作者: KARL-HEINZ DAMMER , WOLFGANG HEYER
关键词: Sampling time 、 Contingency table 、 Nested set model 、 Cultivar 、 Plant species 、 Statistics 、 Sampling (statistics) 、 Biology
摘要: The influence of the cultivated plant stand, subject to timing sampling, on occurrence selected carabid species is investigated for three years running. Due nominal character factors (cultivar, timing, and year) we used log-linear models four dimensional contingency tables under certain hypotheses independence. A coefficient calculated characterizing partial association between two respectively. difference in G 2 's nested test if there are differences concerning strength number beetles cultivar or sampling time