The effects of species immigrations and changing conditions on isoetid communities

Borman, Susan C.; Galatowitsch, Susan M.; Newman, Raymond M.

doi:10.1016/j.aquabot.2009.05.001

Cited by 9 publications

(4 citation statements)

References 29 publications

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“…Lemna minor also had a positive relationship with total phosphorus, whereas Ranunculus reptans and Isoetes lacustris were negatively associated with phosphorus concentration. Lemna species favour lakes with high trophic status and isoetids are known to suffer from an enrichment of nutrients in water, which further results in lowered light availability and increased organic sedimentation (Rorslett, 1991;Borman et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Regional and local determinants of macrophyte community compositions in high-latitude lakes of Finland

et al. 2016

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Species distributions are structured by regional and local determinants, which operate at multiple spatial and temporal scales. The purpose of our work was to distinguish the relative roles of local variables, climate, geographical location and post glaciation condition (i.e. delineation between supra-and subaquatic lakes during the post-glacial Anculys Lake) in explaining variation in macrophyte community composition of all taxa, helophytes and hydrophytes. In addition, we investigated how these four explanatory variable groups affected macrophyte strategy groups based on Grime's classification. Using partial linear regression and variation partitioning, we found that macrophyte communities are primarily filtered by local determinants together with regional characteristics at the studied spatial scale. We further evidenced that post glaciation condition indirectly influenced on local water quality variables, which in turn directly contributed to the macrophyte communities. We thus suggest that regional determinants interact with local-scale abiotic factors in explaining macrophyte community patterns and examining only regional or local factors is not sufficient for understanding how aquatic macrophyte communities are structured locally and regionally.

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Section: Discussionmentioning

confidence: 99%

Regional and local determinants of macrophyte community compositions in high-latitude lakes of Finland

et al. 2016

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“…In the last few decades, eutrophication has become the cause of the most significant changes in lakes of various types. In 23 so-called seepage lakes in the north-western State of Wisconsin (USA), between 1930 and 2000, elodeids and stoneworts appeared at sites with isoetids (Borman et al 2009) as a result of an increase in the electrolytic conductivity of the water of those lakes.…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic changes in properties of the water and spatial structure of the vegetation of the lobelia lake Lake Modre in the Bytów Lakeland

Kraska

Klimaszyk

Piotrowicz

2013

Oceanological and Hydrobiological Studies

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Lake Modre is a lobelia lake. Numerous typical plant species occur here, including Lobelia dortmanna, Littorella uniflora, Isoetes lacustris, and Sphagnum denticulatum. They develop the following associations: Lobelietum dortmannae (Oswald 1923) Tx. ap. Dierss. 1972, Isoetetum lacustris Szańkowski et Kłosowski 1996 n.n., and a community with Sphagnum denticulatum Brid.In 1991, the water of the lake was characterised by low concentrations of nutrients and calcium, acid reaction (pH<5), and Secchi depth visibility of 12 m. Following fry stocking in the lake in 1993 fish farming took place until approximately 1996. During this period the water quality in the lake changed radically in physiochemical terms. Water transparency decreased. Thermal and oxygen stratification developed, with oxygen deficits in the near-bottom layer. Concentrations of nutrient elements increased.Drastic long-term changes were observed in the spatial and quantitative features of the lake vegetation. These particularly related to the instability of Lobelia dortmanna, and the diminishment of the phytocoenosis of Lobelietum dortmannae.

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“…Greene ex Bigelow, a submersed rootless plant of the Lentibulariaceae family, comprises modified stems (Crow and Hellquist 2000a) that can penetrate and anchor in muddy substrates (Gleason and Cronquist 1991;Rhoads and Block 2007). Utricularia resupinata is also capable of living in sediment types (Borman et al 2009) and acidic water (Brouwer et al 2002) containing isoetids. Its habitat, combined with the small stature of its stems, has led some researchers to describe U. resupinata as an isoetid (Borman et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Utricularia resupinata is also capable of living in sediment types (Borman et al 2009) and acidic water (Brouwer et al 2002) containing isoetids. Its habitat, combined with the small stature of its stems, has led some researchers to describe U. resupinata as an isoetid (Borman et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Sediment oxidation capabilities of four submersed aquatic macrophytes

Freeman

Urban

2012

Journal of Freshwater Ecology

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Isoetids are submersed aquatic plants that thrive in soft water, oligotrophic bodies of water and possess small, stiff rosettes and extensive root systems. These roots absorb carbon dioxide and release oxygen, altering the biogeochemistry of sediment. Eriocaulon aquaticum and Lobelia dortmanna are representative isoetids. While Eleocharis acicularis and Utricularia resupinata do not strictly qualify as isoetids, they are commonly found anchored in or attached to sediment populated with isoetids. In a greenhouse experiment, the four macrophytes were planted in two contrasting sediment types to determine how the different species modify sediment redox potential, carbon dioxide concentration, and porewater pH. Eleocharis acicularis and U. resupinata oxidized both sediment types and acidified the porewater more than or equally as extensively as the isoetids ( p 5 0.05). Eleocharis acicularis was the only species that significantly reduced porewater carbon dioxide ( p 5 0.05). In the field study, sediment cores were collected over bare sediment and over each of the four species concurrently with redox and pH measurements. Sediment cores associated with all four aquatic plants had significantly higher redox potentials compared to bare sediment ( p 5 0.05). However, the redox values measured near E. acicularis and U. resupinata were generally lower than those taken near the isoetids. The field sediment oxidation data may be explained by the significantly lower biomass of U. resupinata and E. acicularis compared to the isoetids in the field study ( p 5 0.05). These results show that E. acicularis and U. resupinata are capable of isoetid-like sediment oxidation under greenhouse and field conditions.

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The effects of species immigrations and changing conditions on isoetid communities

Cited by 9 publications

References 29 publications

Regional and local determinants of macrophyte community compositions in high-latitude lakes of Finland

Regional and local determinants of macrophyte community compositions in high-latitude lakes of Finland

Anthropogenic changes in properties of the water and spatial structure of the vegetation of the lobelia lake Lake Modre in the Bytów Lakeland

Sediment oxidation capabilities of four submersed aquatic macrophytes

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