Ecological attributes of a native and exotic emergent subtropical marsh community in lake okeechobee, Florida (USA)
Ecological attributes of native Eleocharis cellulosa and exotic-invasive Panicum repens communities were compared in the western littoral marsh of Lake Okeechobee, USA. Water quality, periphyton and macroinvertebrates were monitored for 2 years. Fish and zooplankton were monitored during the second...
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Veröffentlicht in: | Wetlands ecology and management 2013-04, Vol.21 (2), p.87-105 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Ecological attributes of native
Eleocharis cellulosa
and exotic-invasive
Panicum repens
communities were compared in the western littoral marsh of Lake Okeechobee, USA. Water quality, periphyton and macroinvertebrates were monitored for 2 years. Fish and zooplankton were monitored during the second year. Mean dissolved oxygen, pH and Secchi transparency were significantly higher in
Eleocharis
while total phosphorus was marginally higher in
Panicum.
Periphyton biomass was higher in
Panicum
but biovolumes were higher in
Eleocharis.
There were clear differences in the within-habitat periphyton assemblages, less difference in the among-habitat assemblages and moderate to clear differences in periphyton over time in both habitats. Both habitats were dominated by small omnivorous fish. Habitat and date were the most influential factors in differences among both macroinvertebrates and zooplankton, although these differences were marginal to moderate in both cases. Macroinvertebrate densities were higher in
Eleocharis
while zooplankton densities were higher in
Panicum.
These data suggest that contrary to the paradigm that
Panicum
is undesirable as habitat, sparse ( |
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ISSN: | 0923-4861 1572-9834 |
DOI: | 10.1007/s11273-013-9281-y |