N1. 2 July 2002—After this chapter was published, several errors were found in Table T3, Table T5, and Table T6. The diatoms species Nitzschia aurica, N. interfrigidaria, N. praecurta, and N. praeinterfrigidaria (Table T3) and N. separanda (Table T5 and Table T6) should have been identified as Fragilariopsis aurica, F. interfrigidaria, F. praecurta, F. praeinterfrigidaria, and F. separanda, respectively. Also in Table T3, Simonseniera barboi should have been identified as Proboscia barboi. The correct species appear in this version. In addition, some spelling errors in Table T3, T5, and T6 have been corrected.
*Dates reflect file corrections or revisions.