Publikationsdatum:
2021-06-24
Beschreibung:
Plant surface areas were measured from samples of twocommon submersed aquatics with widely diverging morphologies:Eurasian watermilfoil (Myriophyllum spicatumL.) andwater stargrass (Heteranthera dubia(Jacq.) MacM.). Measuresfor the highly dissected leaves of Eurasian watermilfoil involveddevelopment of a regression equation relating leaflength to direct measures of a subsample of leaf parts. Measuresfor the simple leaves of the stargrass were sums of measuredtriangles. Stem surfaces for both species werecalculated as measured cylinders. Though the means of thestem length and leaf length were larger for stargrass samples,their mean surface area was 95 cm2which was less than the108 cm2recorded for Eurasian watermilfoil samples. Relatingsurface area to dry weight for the stargrass was straightforward,with 1 mg of dry weight yielding an average 0.678 cm2of surface area. Biomass measures for the water milfoil wereconfounded by the additional weight of epiphytic algae persistingon cleaned samples. The results suggest that a lesstimeconsuming method for surface area measures of plantswith highly dissected leaves and a caveat for using biomassmeasures to estimate surface area in such plants.
Schlagwort(e):
Biology
;
Limnology
;
Myriophyllum spicatum
;
Heteranthera dubia
;
plant
surface area
;
leaf morphology
;
submersed aquatic plants
Repository-Name:
AquaDocs
Materialart:
article
,
TRUE
Format:
119-122
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