TY - JOUR
TI - Testate Amoebae of a Monsoon Tropical Forest of South Vietnam
AU - Bobrov, Anatoly
AU - Mazei, Yuri A.
AU - Tiunov, Alexei V.
TI - Testate Amoebae of a Monsoon Tropical Forest of South Vietnam
AB - The composition (143 species and forms) of testate amoebae communities from 68 samples of soils and lake sediments from South Vietnam (Cat Tien National Park) was investigated. In most terrestrial habitats, hydrophilous, soil and even xerophilous testaceans were co-occurring. The likely reason for this phenomenon are sharp seasonal changes in hydrological regime including temporal overwetting or inundation. Typical members of soil communities were Plagiopyxis callida, Tracheleuglypha acolla, Euglypha cristata, E. tuberculata, Trinema complanatum. The fauna was composed mainly of eurybiont species. Less abundant but still common were moss-dwelling species from the genera Heleopera, Hyalosphenia, Nebela and Sphenoderia. Calciphilous species were also present, including Centropyxis plagiostoma, Geopyxella cf. sylvicola, Schwabia terricola, Plagiopyxis callida, P. intermedia v. cyrtostoma, Heleopera petricola v. humicola. Species from the genera Hoogenraadia, Planhoogenraadia, Apolimia were found in this region of South-East Asia for the first time. The variations in the species composition and diversity of testate amoebae in soils was likely caused by several mechanisms including local variations in hydrological regime, the differences in chemical and physical properties and decomposition rates of plant litter, and mineralogical features of soils. The fauna of lake sediments was very distinct with characteristic species Difflugia bacillariarum, Lesquereusia modesta, Arcella gibbosa, Euglypha acanthophora. In the relatively uniform lake sediments local microcommunities were rich in species but very similar in species composition (low beta-diversity). In contrast, in soil samples the micro-scale heterogeneity was usually very pronounced, though the alpha-diversity was lower than in lake sediments. The updated list of testate amoebae of Vietnam includes 237 taxa. Taxa with restricted geographical distribution form up to one tenth of the total species richness.
VL - 2010
IS - Volume 49, Issue 4
PY - 2010
SN - 0065-1583
C1 - 1689-0027
SP - 311
EP - 325
UR - https://ejournals.eu/en/journal/acta-protozoologica/article/testate-amoebae-of-a-monsoon-tropical-forest-of-south-vietnam
KW - Testate amoebae
KW - community
KW - ecology
KW - biogeography
KW - Vietnam
KW - Cat Tien National Park