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N[sub2](C[sub2]H[sub2])-fixation in early stages of a primary succession on a reclaimed salt marsh.
- Source :
-
Holarctic Ecology . May1984, Vol. 7 Issue 2, p165-170. 6p. 4 Charts, 3 Graphs. - Publication Year :
- 1984
-
Abstract
- Nitrogen fixation activity was determined for <em>Lotus tenuis</em>, <em>Medicago lupulina</em> and <em>Trifolium pratense</em>. The three species grew in clones in grassland in an area reclaimed from brackish water in the 1940s. The N2[C2H2]-fixation was measured in soil cores throughout 1974 and 1975. From cores taken in dense and uniform stands of the species, the yearly N2[C2H2]-fixation at maximum cover was estimated. <em>L. tenuis</em> fixed about 4 g N m-2 yr-1 (area with max. cover 130%). i.e. 30-56% of its requirement. Both <em>M. lupulina</em> and <em>T. pratense</em> fixed about 7 g N m-2 yr -1 (maximum cover 37% and 80%) i.e. 67% of their N-requirement. Average N2[C2H2]-fixation for the whole area was 0.4 g N m-2 yr-1, considerably less than the N-addition through rainfall. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NARROWLEAF trefoil
*MEDICAGO
*LEGUMES
*RED clover
*NITROGEN
Subjects
Details
- Language :
- English
- ISSN :
- 01059327
- Volume :
- 7
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Holarctic Ecology
- Publication Type :
- Academic Journal
- Accession number :
- 18544516
- Full Text :
- https://doi.org/10.1111/j.1600-0587.1984.tb01117.x