by Christoph — ...by glo­bal se­quenc­ing of en­vi­ron­men­tal DNA (eDNA) col­lect­ed from a sam­pling site and its ta­xo­nom­ic clas­si­fi­ca­tion and quan­ti­fi­ca­tion by bio­in­for­matics. When an­a­lyz­ing such vo­lu­min­ous da­ta­sets, ope­ra­tion­al ta­xo­nom­ic units (OTUs) of­ten pop up that cor­res­pond to known ta­xa/spe­cies never found at the samp­ling site − the to­pic that brought you here − in ad­di­tion to...