caa a22 4500 477112390 CHVBK 20180405111613.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00011447 doi (NATIONALLICENCE)springer-10.1007/BF00011447 Diversity patterns of arbuscular mycorrhizal fungi associated with cacao in Venezuela [Elektronische Daten] [Gisela Cuenca, Erasmo Meneses] The arbuscular mycorrhizal fungal (AMF) communities associated with cacao in Venezuela were studied. The species of AMF spores present in sixteen cacao plantations and in one nursery were isolated and identified when possible. The spore densities, species richness, diversity, Shannon-Wiener diversity index and dominance concentration index for the AMF communities were calculated. Acaulospora scrobiculata was associated with cacao plants in all study sites. No Scutellospora spp. were found in the analyzed soils. The spore number found in cacao plantations was relatively lower as compared with other tropical crops (38 spores 100 g−1 soil up to 1674). Soils that were cultivated with cacao for more than 40 years showed the lowest spore numbers. Species richness and diversity of AMF communities associated with cacao, were negatively correlated with available P in soils. The Shannon-Wiener diversity index was positively correlated with soil organic matter. These results indicate that the traditional cacao cultivation practices used in Venezuela, maintain mycorrhizal infection on cacao plants. The diversity of the AMF community is similar to that found in natural undisturbed ecosystems from Venezuela. Kluwer Academic Publishers, 1996 diversity nationallicence spores nationallicence tree crop nationallicence tropics nationallicence VA-mycorrhiza nationallicence Cuenca Gisela Venezuelan Institute for Scientific Research, Ecology Center, P.O. Box 21.827, 1020-A, Caracas, Venezuela aut Meneses Erasmo Venezuelan Institute for Scientific Research, Ecology Center, P.O. Box 21.827, 1020-A, Caracas, Venezuela aut Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl 183/2(1996-09-01), 315-322 0032-079X 183:2<315 1996 183 11104 https://doi.org/10.1007/BF00011447 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00011447 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cuenca Gisela Venezuelan Institute for Scientific Research, Ecology Center, P.O. Box 21.827, 1020-A, Caracas, Venezuela aut NATIONALLICENCE 700 1- Meneses Erasmo Venezuelan Institute for Scientific Research, Ecology Center, P.O. Box 21.827, 1020-A, Caracas, Venezuela aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl 183/2(1996-09-01), 315-322 0032-079X 183:2<315 1996 183 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer