Soil biota in boreal urban greenspace : Responses to plant type and age

Show full item record



Permalink

http://hdl.handle.net/10138/312553

Citation

Francini , G , Hui , N , Jumpponen , A , Kotze , D J , Romantschuk , M , Allen , J A & Setala , H 2018 , ' Soil biota in boreal urban greenspace : Responses to plant type and age ' , Soil Biology & Biochemistry , vol. 118 , pp. 145-155 . https://doi.org/10.1016/j.soilbio.2017.11.019

Title: Soil biota in boreal urban greenspace : Responses to plant type and age
Author: Francini, G.; Hui, N.; Jumpponen, A.; Kotze, D. J.; Romantschuk, M.; Allen, J. A.; Setala, H.
Contributor: University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Ecosystems and Environment Research Programme
Date: 2018-03
Language: eng
Number of pages: 11
Belongs to series: Soil Biology & Biochemistry
ISSN: 0038-0717
URI: http://hdl.handle.net/10138/312553
Abstract: Plant functional type influences the abundance and distribution of soil biota. With time, as root systems develop, such effects become more apparent. The relationship of plant type and time with the structure and abundance of soil microbial and invertebrate communities has been widely investigated in a variety of systems. However, much less is known about long-term soil community dynamics within the context of urban environments. In this study, we investigated how soil microbes, nematodes and earthworms respond to different plant functional types (lawns only and lawns with deciduous or evergreen trees) and park age in 41 urban parks in southern Finland. As non-urban controls we included deciduous and evergreen trees in 5 forest sites. We expected that microbial biomass and the relative abundance of fungi over bacteria would increase with time. We also expected major differences in soil microbial and nematode communities depending on vegetation: we hypothesized that i) the presence of trees, and evergreens in particular, would support a greater abundance of fungi and fungal-feeding nematodes over bacteria and bacterial-feeding nematodes and ii) the fungi to bacteria ratio would be lowest in lawns, with deciduous trees showing intermediate values. In contrast to our predictions, we showed that old deciduous trees, rather than evergreens, supported the highest fungal abundances and fungal-feeding nematodes in the soil. Consistent with our predictions, microbial biomass in urban park soils tended to increase with time, whereas - in contrast to our hypotheses - fungal-feeding nematode abundance declined. Even in the oldest parks included in the current study, microbial biomass estimates never approximated those in the minimally managed natural forests, where biomass estimates were three times higher. Anecic earthworm abundance also increased with time in urban parks, whereas abundances of fungal-feeding, plant-feeding and omnivorous nematodes, as well as those of epigeic and endogeic earthworms remained constant with time and without any distinct differences between urban parks and the control forests. Our findings highlight that although urban park soils harbor diverse soil communities and considerable microbial biomass, they are distinct from adjacent natural sites in community composition and biomass.
Subject: Microbial biomass (PLFA)
Urban greenspace
Nematodes
Earthworms
NEMATODE COMMUNITY STRUCTURE
LAND-USE GRADIENT
ECOSYSTEM SERVICES
MICROBIAL COMMUNITY
NITROGEN MINERALIZATION
EARTHWORM POPULATIONS
CARBON ALLOCATION
ABANDONED FIELDS
SOUTH BOHEMIA
FOOD-WEB
1181 Ecology, evolutionary biology
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
Francini_et_al._Soil_Biota_....pdf 469.5Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record