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- Title
QUANTITATIVE SAMPLING OF SUBAQUATIC VEGETATION.
- Authors
Forsberg, Curt
- Abstract
1. In order to get exact unit areas of subaquatic vegetation for investigations on standing crops and productivity, a new way of sampling has been tried. Taking the samples from above involves destroying parts of the vegetation. The new sampler takes the vegetation from below. The sampler has been constructed for luxuriant subaquatic meadows on soft bottoms. 2. Investigations on Myriophyllum verticillatum and Nitella mucronata in Ösby Lake, Djursholm, show that the maximum values of the oven-dry weight are 240 and 310 g/m². The highest productivity data are 2.8 g/m²/day for M. verticillatum and 2.5 for N. mucronata. In the autumn the data are negative: M. verticillatum -1.3 and N. mucronata -0.9 g/m²/day. Then decomposition and dissimilation are greater than assimilation.
- Subjects
MYRIOPHYLLUM; PARROT'S-feather (Plant); MEADOWS; CROPS; NITELLA; ALGAE
- Publication
Oikos, 1959, Vol 10, Issue 2, p233
- ISSN
0030-1299
- Publication type
Article
- DOI
10.2307/3565149