![]() ![]() The suggested primary factor differentiating these both communities was the availability of appropriate habitat for the different species of testate amoebae. The first consisted of organisms inhabiting habitats located within a forest and the second by organisms inhabiting habitats located outside the forest. Statistical analysis showed that testate amoebae were distributed in two discrete communities in the island. However, this hypothesis needs to be evaluated in the future. We hypothesized that the low diversity of species recorded on the island is due to selective colonization-extinction dynamics, processes that determines the low species richness of insular macro-organisms. These results were consistent with the moderate endemicity hypothesis of microbial biogeography. They are probably endemics of this poorly studied and remote zone. Nebela tincta-collaris-bohemica (Arcellinida) is a species complex of small to medium-sized (ca.100 m) testate amoebae common in peat bogs and forest soils. Further, four morphotypes were not identified to species level, and one could not be identified to species or genera level. DNA barcoding studies are regularly revealing the existence of numerous species within known groups, questioning long-held ideas about. ![]() One genus, four species and two subspecies were identified for the first time for southwestern South America. Novel protist diversity can now be found virtually anywhere. Results revealed low alpha diversity and a high proportion of cosmopolitan species. Known resident of Hawley Bog Charlemont, Massachusetts. Also under scrutiny for giving quarter to as yet unidentified flagellates, though not suspected of doing so in collaboration with H. Test ovoid or elongated elliptic, L/B = 1.3–1.We investigate for the first time the species composition and community structure of lobose thecamoebians (Arcellinida) inhabiting an unpopulated and pristine island from the southeastern Pacific. Known resident of Acadia National Park, Maine. With short neck (4.6 ± 0.2 high), with linear wide aperture 24–26 µm With protruding neck and narrow aperture 19–23 µm, up twisted Test without lateral ridge, pyriform, with very short (2.7 ± 0.9 µm high or almost absent) neck, with aperture slightly or strongly curved, or sometimes linear, 28–32 µm ![]() Test with lateral ridge, wide ovoid, with wide linear aperture 24–27 µm 90–133 µm, strongly flattened, with short neck Key to the Nebela collaris-tincta group 1
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