Study of the invertebrate biodiversity and vegetation similarity of two temporary wetlands and weather influence on invertebrates in Evo, Finland
Foteinos, Ilias (2025)
2025
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2025051411542
https://urn.fi/URN:NBN:fi:amk-2025051411542
Tiivistelmä
Wetlands are precious ecosystems for the environment and provide a lot of services to humans. Temporary wetlands, characterized by non-permanent water coverage, are crucial for biodiversity. They are not thoroughly studied, and a lot of parameters are left unnoticed. This report aims to explore the invertebrate biodiversity and vegetation similarity of two forest temporary wetlands in Evo, Finland, during their dry phase, and to investigate how the weather conditions and the vegetation composition can influence their biodiversity patterns. One of the wetlands belongs in the N2000 area.
The invertebrates were collected by malaise traps and identified at family level. The vegetation was collected with the transect method and plants were identified to species level. Data analysis was done in R software, and non-parametric tests were used due to sample size, while parametric tests used were done for visualisation.
Vegetation comparison showed differences between the two wetlands with only about 26% similarity. Invertebrate biodiversity was similar across most weeks, except for week 12. The families with the greatest differences were studied further and possible ecological explanations were proposed, justifying the dissimilarity. The malaise trap could also cause some bias based on its location and colour. Among weather variables, UV index presented the strongest positive correlation with biodiversity variables, followed by a weaker tendency with temperature.
Research from this thesis will be used on an article that is not published yet.
The invertebrates were collected by malaise traps and identified at family level. The vegetation was collected with the transect method and plants were identified to species level. Data analysis was done in R software, and non-parametric tests were used due to sample size, while parametric tests used were done for visualisation.
Vegetation comparison showed differences between the two wetlands with only about 26% similarity. Invertebrate biodiversity was similar across most weeks, except for week 12. The families with the greatest differences were studied further and possible ecological explanations were proposed, justifying the dissimilarity. The malaise trap could also cause some bias based on its location and colour. Among weather variables, UV index presented the strongest positive correlation with biodiversity variables, followed by a weaker tendency with temperature.
Research from this thesis will be used on an article that is not published yet.