When all V4 sequences (740,704 trimmed reads) from the four samples were pooled together, more than 5,200 phylotypes were observed at the 97% similarity level, which is higher than any previously reported richness at that level (notably using different variable regions and datasets).
Finally, raw data from articles were grouped into separate data sets based on the component of the plant community sampled (whole, woody and/or herbaceous) and the response outcome index reported (richness, Shannon H diversity, per cent cover and abundance).
Fecal microbiota alpha diversity and richness (e.g., number of different taxa) were not associated with CRA in our study, whereas one study reported decreased richness in feces from CRC cases (Ahn et al., 2013) and another reported increased richness in unaffected mucosa from CRA cases (Sanapareddy et al., 2012).
Richter and Azous (1995, 2001) reported amphibian richness was unrelated to wetland size, whereas Adams (1999) and Pearl et al. (2005) found R. aurora abundance and occurrence negatively associated with wetland open water.
Japan's high reported species richness is also biased by investigative effort.
The phyla belonging to the Eukarya contain many conspicuous, often larger species, had members living in shallow water, and generally had a tendency to exhibit higher reported species richness.
Native species richness typically declines at high elevations as well (but see Becker et al. 2005, Alexander et al. 2011), and studies that report information on native species richness typically do not explicitly report proportional richness.
The results were in line with the observations made of Anbalagan et al. (2016) who reported maximum diversity, richness, and evenness of natural enemy complex in the vegetables intercropped with castor, roselle (Hibiscus sabdariffa L ., cowpea, and agathi (Sesbania grandiflora L). compared to those in the sole cropped.
The species richness reported here is a considerable increase from the 11,130 faunal species given in a previous (1999) synthesis [41].
On the other hand, Gray [399], [417] reported that species richness in the Antarctic is high, questioning the validity of the proposed latitudinal pattern.
Recently, Mediterranean-specific archaeal "ecotypes" were identified in bathypelagic waters [99], while fingerprinting analyses to determine benthic archaeal OTU richness reported a diversity roughly 10 times lower than that for Bacteria (range 3 35 OTUs per gram of sediment; [100]).
