Aquatic insects of spring fens: individual species responses to the main environmental gradients

RÁDKOVÁ, Vanda, Vít SYROVÁTKA, Jindřiška BOJKOVÁ, Vendula POLÁŠKOVÁ and Michal HORSÁK. Aquatic insects of spring fens: individual species responses to the main environmental gradients. In 9th Symposium for European Freshwater Sciences: Abstract Book. 2015.

Basic information

• Original name: Aquatic insects of spring fens: individual species responses to the main environmental gradients
• Authors: RÁDKOVÁ, Vanda, Vít SYROVÁTKA, Jindřiška BOJKOVÁ, Vendula POLÁŠKOVÁ and Michal HORSÁK.
• Edition: 9th Symposium for European Freshwater Sciences: Abstract Book, 2015.

Other information

• Type of outcome: Conference abstract
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Keywords (in Czech): slatiniště, hmyz, individuální odpovědi druhů
• Keywords in English: spring fens, insect, individual species responses

Abstract

The role of local environmental conditions in structuring insect assemblages at springs is relatively well explored. In contrast, there are virtually no data on how these gradients affect populations of individual species, thus which species determine the response of the entire assemblages. We selected seven independent predictors (amount of calcium + magnesium, discharge, water temperature, proportion of inorganic substratum, FPOM, CPOM, and mean air temperature in July) and analysed their effects on populations of 34 insect species inhabiting most frequently the Western Carpathian spring fens (at least 25 sites out of 59). We found that discharge and water temperature were the most influential predictors (40% of species). Generalists responded mainly to discharge and also to organic substratum (FPOM, CPOM). Spring-fen specialists were affected by water temperature or mineral richness or both factors. A considerable number of specialists, however, did not respond to any analysed predictor and their populations were probably determined by different factors. We provided the first information about individual species responses to abiotic conditions at spring fens, though for eight species no clear response was identified. This study was financially supported by Czech Science Foundation P505/11/0779.

Links

• GAP505/11/0779, research and development project: Name: Vliv faktorů prostředí a schopnosti šíření na skladbu taxocenóz vodních bezobratlých v izolovaných prameništních slatiništích (Acronym: Bezobratlí v prameništních slatiništích)

Investor: Czech Science Foundation

• MUNI/A/0788/2013, interní kód MU: Name: Flóra, vegetace a vybrané zoocenózy evropských biotopů: diverzita, ekologie, historie, evoluce, vzájemné vztahy (Acronym: FLOVEZ)

Investor: Masaryk University, Category A