Functional Assemblages of Macroinvertebrates in Pools and Ditches in Drained Forest Landscape
Laen...
Kuupäev
2018
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Springer
Abstrakt
Artificially drained commercial forests are hydrologically novel ecosystems, where the array of aquatic habitats consists of
ditches and remnant pools. In general the network of ditches has been found to have longer hydroperiod, the knowledge,
however, about aquatic invertebrates in this system is scarce. We examined which environmental factors are impacting the
biomass and abundance of functional feeding groups. Scrapers and shredders were aggregated to ditches and gatherers to pools.
Filterers’ distribution pattern suggested that the function of filtering is carried out by different taxa in pools and ditches. Ditches
were rather more suitable for feeding groups that rely on autochthonous resources. Acidity was a major driver of functional
community composition, for example, one of the causes for higher scraper frequency in ditches. Predators exhibited greater
quantities in extensive macrophyte cover regardless of water body type. Our results suggest that the trophic organization in
ditches and pools is different because habitat factors select the feeding groups directly through food resources, but also because of
the environmental filter on the other biological traits of the organisms. To support complex ecosystems with several trophic levels
also in commercial forests, we suggest to avoid destroying macrophyte rich pools and ditches during silvicultural management.
The research was funded by the European Union through the European Regional Development Fund (program 3.2.0802.11-0043) and the Estonian Research Council (grants no 9051 and IUT 34-7).
The research was funded by the European Union through the European Regional Development Fund (program 3.2.0802.11-0043) and the Estonian Research Council (grants no 9051 and IUT 34-7).
Kirjeldus
Märksõnad
functional feeding groups, forestry drainage, temporary water bodies, drainage ditches, articles