1. Fluxes of methane and carbon dioxide from a small productive lake to the atmosphere

   • Peter Casper
   • Stephen C. Maberly
   • Bland J. Finlay

   OriginalPaper Pages: 1 - 19

2. Calcium, potassium, and magnesium cycling in aMexican tropical dry forest ecosystem

   • Julio Campo
   • J. Manuel Maass
   • Angelina Martínez Yrízar

   OriginalPaper Pages: 21 - 36

3. Nitrogen limitation of production in a Californianannual grassland: The contribution of arbuscularmycorrhizae

   • P. Grogan
   • F.S. Chapin III

   OriginalPaper Pages: 37 - 51

4. Mycorrhizal weathering: A true case of mineral plant nutrition?

   • Nico van Breemen
   • Roger Finlay
   • Mats Olsson

   OriginalPaper Pages: 53 - 67

5. Nutrient losses in runoff from grasslandand shrubland habitats in southern New Mexico: II. Field plots

   • William H. Schlesinger
   • T.J. Ward
   • John Anderson

   OriginalPaper Pages: 69 - 86

6. Changes in Sr/Ca, Ba/Ca and 87Sr/86Sr ratios between trophic levels in two forest ecosystems in the northeastern U.S.A.

   • Joel D. Blum
   • E. Hank Taliaferro
   • Richard T. Holmes

   OriginalPaper Pages: 87 - 101