Abstract
Data on the distribution and species-environment
relationships of rare and endemic species of protists in Asian tropical
waterbodies could provide valuable information for better understanding of
auto- and synecology of microbes in tropical ecosystems. We studied the
morphology, abundance and distribution of two rare endemic species of testate
amoebae Netzelia tuberspinifera and Netzelia mulanensis co-existing in Ba Be Lake
(Bac Kan province), the largest natural lake of Vietnam. The results of NMDS
and ANOSIM analyses showed insignificant difference by measured physicochemical
parameters of water between nearshore and open water areas of the lake.
Difference of abundances of each studied species between nearshore and open
water areas of Ba Be Lake was not statistically significant. Additionally,
abundances of N. tuberspinifera and N. mulanensis were weakly and
insignificantly correlated at the time of investigation. The relation between
environmental parameters and species distribution was investigated using a
redundancy analysis (RDA) following forward selection procedure. The first and
second RDA axes explained together 67% of the total variance in the data.
Forward selection identified that water temperature and turbidity should be
retained for the parsimonious RDA model. It is suggested that water turbidity
should be considered in the next studies of relation between environmental
variables and testate amoeba data. There were statistically significant
differences in morphology between Vietnamese and Chinese populations of both
investigated species.
(Fulltext: https://doi.org/10.1007/s10201-021-00691-x)
(Source: https://www.proquest.com/scholarly-journals/new-data-on-morphology-distribution-relationship/docview/2640559280/se-2?accountid=28030)