Autumn drought drives functional diversity of benthic diatom assemblages of continental intermittent streams

Viktória B-Béres, B. Tóthmérész, István Bácsi, G. Borics, András Abonyi, Kálmán Tapolczai, Frederic Rimet, Ágnes Bouchez, Gábor Várbíró, Péter Török

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Climate change is predicted to increase drought occurrence and severity in small continental watercourses. Here, we studied the structure and the functional diversity of benthic diatom assemblages in lowland intermittent and permanent watercourses of the Carpathian Basin. We assumed that the community structure of intermittent and permanent watercourses would be markedly different, and the functional diversity in both would be strongly influenced by autumn drought. We found that intermittent streams were primarily characterized by small-sized generalists and aerophilic taxa, while permanent watercourses were inhabited by large-sized planktic or fast moving groups. The functional richness was significantly lower in intermittent than in permanent streams. This decrease in the functional richness of benthic algal communities may negatively affect the functioning of lotic algal communities. We conclude that diatom assemblages in lowland intermittent watercourses are sensitive indicators of changes in ecosystem properties, and should be considered in appropriate evaluation and management of extreme climatic events on aquatic ecosystems.

Original languageEnglish
Pages (from-to)129-136
Number of pages8
JournalAdvances in Water Resources
Volume126
DOIs
Publication statusPublished - Apr 1 2019

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diatom
drought
autumn
algal community
generalist
aquatic ecosystem
community structure
watercourse
climate change
ecosystem
basin

Keywords

  • Continental region
  • Diatoms
  • Ecosystem functioning
  • Intermittent streams

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Autumn drought drives functional diversity of benthic diatom assemblages of continental intermittent streams. / B-Béres, Viktória; Tóthmérész, B.; Bácsi, István; Borics, G.; Abonyi, András; Tapolczai, Kálmán; Rimet, Frederic; Bouchez, Ágnes; Várbíró, Gábor; Török, Péter.

In: Advances in Water Resources, Vol. 126, 01.04.2019, p. 129-136.

Research output: Contribution to journalArticle

B-Béres, Viktória ; Tóthmérész, B. ; Bácsi, István ; Borics, G. ; Abonyi, András ; Tapolczai, Kálmán ; Rimet, Frederic ; Bouchez, Ágnes ; Várbíró, Gábor ; Török, Péter. / Autumn drought drives functional diversity of benthic diatom assemblages of continental intermittent streams. In: Advances in Water Resources. 2019 ; Vol. 126. pp. 129-136.
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