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Diversity and variability of macroinvertebrates in ponds within the limestone post-exploitation area in Górażdże (Poland) over a 10-year period
  • Izabela Czerniawska-Kusza,
  • Agnieszka Brożonowicz
Izabela Czerniawska-Kusza
Uniwersytet Opolski

Corresponding Author:[email protected]

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Agnieszka Brożonowicz
Uniwersytet Opolski
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Abstract

Artificial ponds are an integral feature of the landscape in many parts of the world and contribute greatly to regional diversity. The study aimed to (1) investigate the structure and diversity of macroinvertebrate assemblages in five small permanent water bodies within a limestone quarry area, (2) determine the environmental variables shaping assemblages, and (3) evaluate changes over a relatively long period. 2. Benthic samples were collected monthly from April to November in 2009 and 2019, and basic physical and chemical water parameters were measured. Macroinvertebrates were sampled according to the time-limited and habitat-dependent sampling technique using a standard pond net. Several biocenotic indices based on taxon composition or percentage of individuals were calculated to describe the assemblages. The relationships between environmental variables and macroinvertebrates were evaluated using multivariate analyses. 3. The results showed that the assemblages were dominated by mayflies (Baetidae and Caenidae), damselflies (Coenagrionidae), and dipterans (Chironomidae), with a total of 42 taxa recorded. Over the ten-year period, taxon richness and diversity increased, especially in spring, and became more diverse among the ponds. The abundance and frequency of occurrence of hololimic organisms, such as snails (Lymnaeidae and Planorbidae), oligochaetes, and water mites, also increased. The RDA analysis indicated that temperature, seasonality, pond margin shading, and morphometry were the main environmental factors influencing macroinvertebrates, which explained 38.6% of the total variance in macroinvertebrate abundance. 4. This study indicates a significant spatial and temporal variation in macroinvertebrate distribution and assemblage structure among small artificial water bodies created in the limestone quarry, despite their proximity.