phytoplankton taxa composition of the caspian sea were evaluated by using samples collected at 12 stations along the iranian coast of the caspian sea between 1996 and 2010. this study identified 158 phytoplankton species consisted of diatoms (70 species), dinoflagellates (23 species), chlorophytes (29 species), cyanophytes (31 species), and euglenoids (5 species). the dominant species were the ...

a total of 90 species, belonging to 29 genera and 15 families, observed from an urban wetland of meghalaya is the species-rich rotifera assemblage known till date from any sub-tropical ecosystem of the indian sub-region. total richness (s) merits biodiversity value as ~56.0, ~ 38.0 and ~23.0 % of the species recorded from meghalaya, northeast india (nei) and india, respectively while several ro...

In a study on coprophilous fungi, different samples including cow, sheep and horse dung and mouse feces were collected from different locations in West and East Azarbaijan provinces (NW Iran). Isolation of the fungi was done based on moist chamber culture method. Purification of the isolated fungi was done by single spore culture method. Several fungal taxa were obtained. Identification of the ...

There is controversy concerning the role of genetic factors in species extinctions. Many authors have asserted that species are usually driven to extinction before genetic factors have time to impact them, but few studies have seriously addressed this issue. If this assertion is true, there will be little difference in genetic diversity between threatened and taxonomically related nonthreatened...

Article H.5.2 of the Shenzhen Code (Turland & al. in Regnum Veg. 159. 2018) currently states that “If postulated or known parent taxa are at unequal ranks, appropriate rank nothotaxon is lowest these ranks.” This wording, perhaps unintentionally, creates a problem certain cases. If only one for hybrids between species to which its unequally ranked belong, rule could be interpreted as author bei...