University of Oulu

Lindholm, M., Grönroos, M., Hjort, J. et al. Hydrobiologia (2018) 816: 213.

Different species trait groups of stream diatoms show divergent responses to spatial and environmental factors in a subarctic drainage basin

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Author: Lindholm, Marja1; Grönroos, Mira2; Hjort, Jan1;
Organizations: 1Geography Research Unit, University of Oulu, Oulu, Finland
2Department of Environmental Sciences, Section of Environmental Ecology, University of Helsinki, Lahti, Finland
3Finnish Environment Institute, Freshwater Centre, Oulu, Finland
4Finnish Environment Institute, Biodiversity Centre, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.1 MB)
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Language: English
Published: Springer Nature, 2018
Publish Date: 2019-06-13


Understanding the drivers of community structure is an important topic in ecology. We examined whether different species trait groups of stream diatoms (ecological guilds and specialization groups) show divergent responses to spatial and environmental factors in a subarctic drainage basin. We used local- and catchment-scale environmental and spatial variables in redundancy analysis and variation partitioning to examine community structuring. Local and catchment conditions and spatial variables affected diatom community structure with different relative importance. Local-scale environmental variables explained most of the variation in the low-profile and motile guilds, whereas local and spatial variables explained the same amount of the variation in the high-profile guild. The variations in the planktic guild and the specialist species were best explained by spatial variables, and catchment variables explained most variation only in generalist species. Our study showed that diatom communities in subarctic streams are a result of both environmental filtering and spatial processes. Our findings also suggested that dividing whole community into different groups by species traits can increase understanding of metacommunity organization.

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Series: Hydrobiologia
ISSN: 0018-8158
ISSN-E: 1573-5117
ISSN-L: 0018-8158
Volume: 816
Issue: 1
Pages: 213 - 230
DOI: 10.1007/s10750-018-3585-0
Type of Publication: A1 Journal article – refereed
Field of Science: 1181 Ecology, evolutionary biology
119 Other natural sciences
Funding: This study is part of the project ‘Spatial scaling, metacommunity structure and patterns in stream communities’ funded by the Academy of Finland (project number 273557). During this research, J. Hjort acknowledges the Academy of Finland (project number 285040).
Academy of Finland Grant Number: 273557
Detailed Information: 273557 (Academy of Finland Funding decision)
285040 (Academy of Finland Funding decision)
Copyright information: © Springer International Publishing AG, part of Springer Nature 2018. This is a post-peer-review, pre-copyedit version of an article published in Hydrobiologia. The final authenticated version is available online at: