Response of Benthic Invertebrates to Disturbance From Stream Restoration: The Importance of Bryophytes

The response of benthic invertebrates to disturbance from stream restoration was studied in the Reinikankoski rapids, central Finland. I hypothesized that stream bryophytes could act as a refugium for invertebrates. The restoration procedure destroyed nearly half of the bryophytes present at the stu...

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Bibliographic Details
Published inHydrobiologia Vol. 523; no. 1-3; pp. 37 - 45
Main Author Korsu, Kai
Format Journal Article
LanguageEnglish
Published Dordrecht Kluwer Academic Publishers 01.07.2004
Springer
Springer Nature B.V
Subjects
Animal, plant and microbial ecology
Applied ecology
Aquatic ecosystems
Aquatic plants
Benthic fauna
Biological and medical sciences
Bryophyta
Bryopsida
Conservation, protection and management of environment and wildlife
Creeks & streams
Environmental degradation: ecosystems survey and restoration
Environmental restoration
Flowers & plants
Freshwater
Fundamental and applied biological sciences. Psychology
Habitats
Invertebrata
Invertebrates
mosses and liverworts
refuge habitats
Refugia
streams
winter
Finland
Finland, Reinikankoski R
disturbance
Bryophyta
Perturbation
recovery
Refuge
benthic macroinvertebrates
bryophytes
Freshwater environment
Aquatic environment
stream restoration
Hydrobiology
refugium
Stream
Ecological recovery
Invertebrata
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Summary:The response of benthic invertebrates to disturbance from stream restoration was studied in the Reinikankoski rapids, central Finland. I hypothesized that stream bryophytes could act as a refugium for invertebrates. The restoration procedure destroyed nearly half of the bryophytes present at the study reach, and invertebrate densities decreased sharply immediately after the restoration. Within 2 weeks, invertebrates had recolonized the disturbed reach, and within 1 month peak numbers were attained. Invertebrates showed a clear association with bryophytes, especially after the restoration. My study shows that invertebrate recovery can be relatively fast in winter, and underlines the importance of stream mosses as invertebrate habitat and refugia. They should be taken in consideration in stream restoration projects by leaving patches of stream bottom intact.
Bibliography:http://dx.doi.org/10.1023/B:HYDR.0000033086.09499.86
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ISSN:0018-8158
1573-5117
DOI:10.1023/B:HYDR.0000033086.09499.86