Mechanisms of Diatom Assembly in a Hydrologically-Managed Subtropical Wetland

Lee, Sylvia

doi:10.25148/etd.fi14040846

Cited by 1 publication

(2 citation statements)

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“…Diatom assemblages respond to stressors by altering their composition and relative species abundance [40,41]. For successful restoration of a riverine ecosystem, it is important to set achievable ecological goals and to use appropriate assessment strategies based on a comprehensive understanding of biotic reactions of manipulated variables, with particular reference to hydrology, as hydrology is an important driver of changes in aquatic ecosystems [42].…”

Section: Structure Of Diatom Assemblagementioning

confidence: 99%

“…In Szigetköz, there was a decrease in nutrient content (the proportion of meso-eutrophic species increased with time), but as we cannot speak of nutrient limitation, nutrient decrease did not cause a trend change in the temporal dynamics of core species. The success of the Everglades restoration, an oligotrophic subtropical wetland in South Florida, USA, has been associated with the abundance of core species and studies have shown that high diatom core species abundance must be maintained for success [42]. Changes in the relative number of common species showed a significant correlation with water discharge.…”

Section: Structure Of Diatom Assemblagementioning

confidence: 99%

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Long-Term Changes of Species Composition and Functional Traits of Epiphytic Diatoms in the Szigetköz Region (Hungary) of the Danube River

Ács

Bíró

Berta

et al. 2020

Water

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Here we report the results of our decades-long study on epiphytic communities from two tributary systems of the Szigetköz section of the Danube River. The main goal of the investigation was to detect changes in the epiphytic communities at structural (core species, changes in the relative abundance of common species) and functional (trait changes) levels as a result of the most important anthropogenic effects on Szigetköz, i.e., hydro-morphological modifications. We also examined the impact of rehabilitation on the tributary systems in terms of ecological potential. We discovered that mainly motile diatom species characterized the epiphyton due to reduced water volume were introduced into the tributary system after the diversion of the Danube. The ecosystem stabilized in the rehabilitated section, while the non-rehabilitated section showed a worsening tendency, mainly in the parapotamic branches. Our long-term data sets may provide a good basis for comparisons of different aquatic ecosystems, to define changes in the abundance of core species and in the structure of community in response to different anthropogenic pressures. It is fundamental to determine adaptive traits in assessing the impact of global warming stressors on biodiversity.

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Section: Structure Of Diatom Assemblagementioning

confidence: 99%

Section: Structure Of Diatom Assemblagementioning

confidence: 99%