Potential for estimating macrophyte surface area from biomass
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522, more
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| Keywords |
Ammonium compounds
Analytical techniques > Colorimetric techniques
Attenuation > Light attenuation
Biology > Organism morphology > Plant morphology
Canada, Boreal Plain
Chemical elements > Nonmetals > Phosphorus
Nutrients (mineral)
Population characteristics > Biomass
Ceratophyllum demersum L. [WoRMS]; Myriophyllum exalbescens; Potamogeton pusillus L. [WoRMS]; Potamogeton richardsonii (Benn.) Rydb. [WoRMS]; Potamogeton zosterformis; Utricularia vulgaris
Fresh water |
| Author keywords |
macrophyte; surface area; biomass; leaf morphology; boreal plain |
| Authors | | Top |
- Armstrong, N.
- Planas, D.
- Prepas, E.
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| Abstract |
Relationships between macrophyte surface area and biomass were studied in four lakes on Canada's Boreal Plain, representing a gradient of nutrient concentration and light penetration (mean summer total phosphorus 13-60 µg l-1 ; ammonium 4-35 µg l-1; vertical light extinction coefficient 0.7-1.6 m-1). We used colorimetry and dry weight to establish relationships between surface area and biomass for six species (Ceratophyllum demersum, Potamogeton richardsonii, P. zosterformis, P. pusillus, Utricularia vulgaris and Myriophyllum exalbescens). Except for P. pusillus, a positive relationship existed between surface area and biomass. The relationship was species-specific; general groupings could not be made based on leaf morphology. For three of the four species found in more than one lake, relationships did not differ across lakes. Only C. demersum, which may be sensitive to fluctuating water levels, exhibited a lake-specific relationship between surface area and biomass. |
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