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Growth and biomass turnover of Hydrocharis dubia L. cultured under different nutrient conditions
Author(s) -
Tsuchiya Takayoshi
Publication year - 1989
Publication title -
ecological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.628
H-Index - 68
eISSN - 1440-1703
pISSN - 0912-3814
DOI - 10.1007/bf02347148
Subject(s) - nutrient , biomass (ecology) , biology , dry weight , botany , zoology , nitrogen , agronomy , ecology , chemistry , organic chemistry
Growth of a floating‐leaved plant, Hydrocharis dubia L., was examined under varying nutrient conditions between 0.3 and 30 mgN l −1 total inorganic nitrogen. H. dubia plants cultured under the most nutrient‐rich condition showed the highest maximum ramet density (736 m −2 ), the highest maximum biomass (80.4 g dry weight m −2 ), and the highest total net production (185 g dry weight m −2 in 82 days). Plants under nutrient‐poor conditions had a relatively large proportion of root biomass and a small proportion of leaves with a long life span. Compared with other floating‐leaved and terrestrial plants, the maximum biomass of H. dubia was relatively small. This, and the rapid biomass turnover, was related to the short life span of leaves (13.2–18.7 days) and large biomass distribution to leaves.