Alex Alexiev edited section_Initial_Findings_subsection_Alpha__.tex  over 8 years ago

Commit id: 017e471be5dc4bbfd74d6830d4adf3a42b127a33

deletions | additions      

       

\section{Initial Findings}  \subsection{Alpha Diversity}  Microbes from the genera Methylotenera, Planctomyces, Rhodobacter, and Providencia are the most common amongst all the sites and SAV species. Site P1 specifically had a higher relative abundance of the genus Prosthecobacter and family Verucomicrobiaceae than the other sites. In addition, site P2 had a high relative abundance of Cylindrospermopsis in the leaves of Eurasian watermilfoil and Vallisneria. The genera Sulfuricurvum and Sulfurimonas, which are sulfur reducing sulfur-oxidizing  bacteria, were present in the roots at site P2 and were particularly high in relative abundance in Redhead Grass. Rhodocyclaceae was also commonly present in root samples from sites P2 and P3. \subsection{Beta Diversity}  Fig. 2 shows a PCoA using unweighted UniFrac. A shows the whole dataset. Leaves and roots tend to cluster separately within each site. In addition, the sites cluster into two groups: P1, P3, P4 make up one group and P2 makes up another group. Panel B shows data for only site P2 in order to examine patterns between samples within only one site. Site P2 was chosen since it was the most distinct in microbial community compared to P1, P3, and P4. It is apparent that samples are differentiated by whether they are leaves or roots and by the host species. Leaves and roots are most differentiated in Redhead Grass and Vallisneria. At the same time, the leaves (regardless of host) tend to cluster more tightly with each other than the roots with themselves. Still, there are distinct clusters differentiated by the host species within site P2.