Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Cosmopolitan Chrysophytes

Jørgen Kristiansen
Systematics and Geography of Plants
Vol. 70, No. 2, Fresh Water Algae: Taxonomy, Biogeography and Conservation (2000), pp. 291-300
DOI: 10.2307/3668648
Stable URL: http://www.jstor.org/stable/3668648
Page Count: 10
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Cosmopolitan Chrysophytes
Preview not available

Abstract

With the routine use of electron microscopy it has now become possible to obtain a detailed knowledge of the global distribution of silica-scaled chrysophytes. After the original opinion that they were restricted to cool temperate and subarctic environments has been abandoned, it is now clear that as a group they occur in all climates. Of the altogether 250 taxa, 19 taxa are definitely cosmopolitan, and further 34 taxa are widely distibuted. In addition, many more very small and insufficiently known species might belong in these groups. Others have specific distributions depending on suitable environment and on dispersal possibilities. The importance of investigation intensity and of available specialists for reaching correct conclusions is emphasized. Correct identifications are indeed necessary, but the species concept is inconsistent and purely morphological, and the use of molecular techniques in chrysophyte taxonomy and biogeography is only in its beginning.

Page Thumbnails

  • Thumbnail: Page 
[291]
    [291]
  • Thumbnail: Page 
292
    292
  • Thumbnail: Page 
293
    293
  • Thumbnail: Page 
294
    294
  • Thumbnail: Page 
295
    295
  • Thumbnail: Page 
296
    296
  • Thumbnail: Page 
297
    297
  • Thumbnail: Page 
298
    298
  • Thumbnail: Page 
299
    299
  • Thumbnail: Page 
300
    300