GlazNozaisArseneault2009

Référence

Glaz, P.N., Nozais, C. and Arseneault, D. (2009) Macroinvertebrates on coarse woody debris in the littoral zone of a boreal lake. Marine and Freshwater Research, 60(9):960-970. (Scopus )

Résumé

Logging activity was a regular practice in the boreal forest of Quebec during the 19th century and may have had an impact on the temporal dynamics of aquatic coarse woody debris (CWD) and associated organisms. The dynamics of white cedar (Thuja occidentalis) CWD inputs from the riparian environment in a boreal lake in Eastern Quebec, Canada, over the past 350 years were reconstructed and differences in the macroinvertebate communities according to CWD age, season of sampling (spring, summer and autumn), depth and site were investigated. It was hypothesised that CWD macroinvertebrate community structure would change with CWD age, season and depth, but not among sites. No significant correlation was found between CWD age and macroinvertebrate densities and taxa number. The macroinvertebrate community was highly variable in space and time. Season was the main factor influencing taxa composition and the relative densities of individuals. The mean density was more than twofold greater in autumn than in spring and summer (1046, 1049 and 2335 individuals m-2 in spring, summer and autumn respectively). Density and taxa number decreased with depth, but site did not appear to influence the community. As CWD inputs increased during the log-driving period, impacts on macroinvertebrate communities were likely to be important and should be documented across the boreal zone. © 2009 CSIRO.

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@ARTICLE { GlazNozaisArseneault2009,
    AUTHOR = { Glaz, P.N. and Nozais, C. and Arseneault, D. },
    TITLE = { Macroinvertebrates on coarse woody debris in the littoral zone of a boreal lake },
    JOURNAL = { Marine and Freshwater Research },
    YEAR = { 2009 },
    VOLUME = { 60 },
    PAGES = { 960-970 },
    NUMBER = { 9 },
    NOTE = { cited By 4 },
    ABSTRACT = { Logging activity was a regular practice in the boreal forest of Quebec during the 19th century and may have had an impact on the temporal dynamics of aquatic coarse woody debris (CWD) and associated organisms. The dynamics of white cedar (Thuja occidentalis) CWD inputs from the riparian environment in a boreal lake in Eastern Quebec, Canada, over the past 350 years were reconstructed and differences in the macroinvertebate communities according to CWD age, season of sampling (spring, summer and autumn), depth and site were investigated. It was hypothesised that CWD macroinvertebrate community structure would change with CWD age, season and depth, but not among sites. No significant correlation was found between CWD age and macroinvertebrate densities and taxa number. The macroinvertebrate community was highly variable in space and time. Season was the main factor influencing taxa composition and the relative densities of individuals. The mean density was more than twofold greater in autumn than in spring and summer (1046, 1049 and 2335 individuals m-2 in spring, summer and autumn respectively). Density and taxa number decreased with depth, but site did not appear to influence the community. As CWD inputs increased during the log-driving period, impacts on macroinvertebrate communities were likely to be important and should be documented across the boreal zone. © 2009 CSIRO. },
    AUTHOR_KEYWORDS = { Dendrochronology; Forest; Lake coupling; Lake ecosystems; Riparian forest; Spatio-temporal dynamics. },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1071/MF08260 },
    KEYWORDS = { boreal forest; coarse woody debris; community structure; dendrochronology; intertidal environment; lake ecosystem; logging (timber); macroinvertebrate; nineteenth century; reconstruction; riparian forest; seasonal variation; spatiotemporal analysis; vertical distribution, Canada; North America; Quebec [Canada], Chamaecyparis; Chronic wasting disease prion; Thuja occidentalis },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-70349512712&partnerID=40&md5=530dd0f473eaad4f83eacb223e7f2eb2 },
}

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