A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability
A simulation model has been developed that focuses on the ability of two competing submersed macrophytes, meadow-forming and canopy-forming, to maintain their biomass under different environmental conditions. Vallisneria americana (American wildcelery) serves as the example for meadow-forming plants...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2004
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA428026 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA428026 |
id |
ftdtic:ADA428026 |
---|---|
record_format |
openpolar |
spelling |
ftdtic:ADA428026 2023-05-15T18:46:09+02:00 A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability Best, Elly P. Kiker, Gregory A. Boyd, William A. ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB 2004-09 text/html http://www.dtic.mil/docs/citations/ADA428026 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA428026 en eng http://www.dtic.mil/docs/citations/ADA428026 Availability: Document partially illegible. DTIC Biology *NUTRIENTS *AQUATIC PLANTS NITROGEN FRESH WATER SUSPENDED SEDIMENTS PHOSPHORUS UNDERWATER LIGHT PLANTS(BOTANY) TEMPERATE REGIONS SHALLOW DEPTH MACROPHYTES POTAMOGETON PECTINATUS VALLISNERIA AMERICANA Text 2004 ftdtic 2016-02-21T09:17:26Z A simulation model has been developed that focuses on the ability of two competing submersed macrophytes, meadow-forming and canopy-forming, to maintain their biomass under different environmental conditions. Vallisneria americana (American wildcelery) serves as the example for meadow-forming plants and Stuckenia pectinata (until recently known as Potamogeton pectinatus or sago pondweed) for canopy-forming plants. The model can be used to predict changes in species composition of submersed vegetation as a result of changes in the availability of resources in shallow freshwater bodies. In the model, the two plant species compete for light and exhibit different species-specific relationships between plant tissue nitrogen (N):phosphorus (P) ratio and plant biomass production. The latter species-specific relationships have not been determined in V. americana and P. pectinatus, and, therefore, for calibration of the model, the specific relationships between plant tissue N:P ratio and reduction in plant biomass production of Zannichellia palustris and Elodea canadensis were used. The latter species have habitat preferences similar to those of V. americana and P. pectinatus. Competition for light proved to be a far more important determinant of species composition than the availabilities of N and P in the sediment. Intraspecific competition for light did not occur in V. americana in a temperate climate, but it was observed at densities > 8-9 plants m-2 in a more southern climate. It occurred in P. pectinatus at plant densities >4-5 plants m-2. Coexistence of both species occurred only at V. americana:P. pectinatus plant density ratios of 28:2 to 26:4 plants m-2 in the absence of N and P limitation of growth, irrespective of climate (temperate and more southern climates tested). At density ratios higher than 28:2, V. americana excludes P. pectinatus, and at density ratios lower than 26:4, P. pectinatus excludes V. americana. Text Zannichellia palustris Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Biology *NUTRIENTS *AQUATIC PLANTS NITROGEN FRESH WATER SUSPENDED SEDIMENTS PHOSPHORUS UNDERWATER LIGHT PLANTS(BOTANY) TEMPERATE REGIONS SHALLOW DEPTH MACROPHYTES POTAMOGETON PECTINATUS VALLISNERIA AMERICANA |
spellingShingle |
Biology *NUTRIENTS *AQUATIC PLANTS NITROGEN FRESH WATER SUSPENDED SEDIMENTS PHOSPHORUS UNDERWATER LIGHT PLANTS(BOTANY) TEMPERATE REGIONS SHALLOW DEPTH MACROPHYTES POTAMOGETON PECTINATUS VALLISNERIA AMERICANA Best, Elly P. Kiker, Gregory A. Boyd, William A. A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability |
topic_facet |
Biology *NUTRIENTS *AQUATIC PLANTS NITROGEN FRESH WATER SUSPENDED SEDIMENTS PHOSPHORUS UNDERWATER LIGHT PLANTS(BOTANY) TEMPERATE REGIONS SHALLOW DEPTH MACROPHYTES POTAMOGETON PECTINATUS VALLISNERIA AMERICANA |
description |
A simulation model has been developed that focuses on the ability of two competing submersed macrophytes, meadow-forming and canopy-forming, to maintain their biomass under different environmental conditions. Vallisneria americana (American wildcelery) serves as the example for meadow-forming plants and Stuckenia pectinata (until recently known as Potamogeton pectinatus or sago pondweed) for canopy-forming plants. The model can be used to predict changes in species composition of submersed vegetation as a result of changes in the availability of resources in shallow freshwater bodies. In the model, the two plant species compete for light and exhibit different species-specific relationships between plant tissue nitrogen (N):phosphorus (P) ratio and plant biomass production. The latter species-specific relationships have not been determined in V. americana and P. pectinatus, and, therefore, for calibration of the model, the specific relationships between plant tissue N:P ratio and reduction in plant biomass production of Zannichellia palustris and Elodea canadensis were used. The latter species have habitat preferences similar to those of V. americana and P. pectinatus. Competition for light proved to be a far more important determinant of species composition than the availabilities of N and P in the sediment. Intraspecific competition for light did not occur in V. americana in a temperate climate, but it was observed at densities > 8-9 plants m-2 in a more southern climate. It occurred in P. pectinatus at plant densities >4-5 plants m-2. Coexistence of both species occurred only at V. americana:P. pectinatus plant density ratios of 28:2 to 26:4 plants m-2 in the absence of N and P limitation of growth, irrespective of climate (temperate and more southern climates tested). At density ratios higher than 28:2, V. americana excludes P. pectinatus, and at density ratios lower than 26:4, P. pectinatus excludes V. americana. |
author2 |
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB |
format |
Text |
author |
Best, Elly P. Kiker, Gregory A. Boyd, William A. |
author_facet |
Best, Elly P. Kiker, Gregory A. Boyd, William A. |
author_sort |
Best, Elly P. |
title |
A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability |
title_short |
A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability |
title_full |
A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability |
title_fullStr |
A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability |
title_full_unstemmed |
A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability |
title_sort |
simulation model on the competition for light of meadow-forming and canopy-forming aquatic macrophytes at high and low nutrient availability |
publishDate |
2004 |
url |
http://www.dtic.mil/docs/citations/ADA428026 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA428026 |
genre |
Zannichellia palustris |
genre_facet |
Zannichellia palustris |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA428026 |
op_rights |
Availability: Document partially illegible. |
_version_ |
1766237597542121472 |