Conserving macroinvertebrate diversity in headwater streams: the importance of knowing the relative contributions of a and ß diversity

Amber Clarke, Ralph MAC NALLY, Nick Bond, P. Lake

    Research output: Contribution to journalArticle

    35 Citations (Scopus)

    Abstract

    Aim We investigated partitioning of aquatic macroinvertebrate diversity in eight headwater streams to determine the relative contributions of a and b diversity to c diversity, and the scale dependence of a and b components. Location Great Dividing Range, Victoria, Australia. Methods We used the method of Jost (Ecology, 2007, 88, 2427–2439) to partition c diversity into its a and b components. We undertook the analyses at both reach and catchment scales to explore whether inferences depended on scale of observation. Results We hypothesized that b diversity would make a large contribution to the c diversity of macroinvertebrates in our dendritic riverine landscape, particularly at the larger spatial scale (among catchments) because of limited dispersal among sites and especially among catchments. However, reaches each had relatively high taxon richness and high a diversity, while b diversity made only a small contribution to c diversity at both the reach and catchment scales. Main conclusions Dendritic riverine landscapes have been thought to generate high b diversity as a consequence of limited dispersal and high heterogeneity among individual streams, but this may not hold for all headwater stream systems. Here, a diversity was high and b diversity low, with individual headwater stream reaches each containing a large portion of c diversity. Thus, each stream could be considered to have low irreplaceability since losing the option to use one of these sites in a representative reserve network does not greatly diminish the options available for completing the reserve network. Where limited information on individual taxonomic distributions is available, or time and money for modelling approaches are limited, diversity partitioning may provide a useful ‘first-cut’ for obtaining information about the irreplaceability of individual streams or subcatchments when establishing representative freshwater reserves.
    Original languageEnglish
    Pages (from-to)725-736
    Number of pages12
    JournalDiversity and Distributions
    Volume16
    DOIs
    Publication statusPublished - 2010

    Fingerprint

    headwater
    macroinvertebrates
    macroinvertebrate
    catchment
    reserve networks
    partitioning
    Victoria (Australia)
    subwatersheds
    aquatic invertebrates
    ecology
    methodology
    modeling
    method

    Cite this

    @article{b9a62f0d2696442aa856627f8b1fb160,
    title = "Conserving macroinvertebrate diversity in headwater streams: the importance of knowing the relative contributions of a and {\ss} diversity",
    abstract = "Aim We investigated partitioning of aquatic macroinvertebrate diversity in eight headwater streams to determine the relative contributions of a and b diversity to c diversity, and the scale dependence of a and b components. Location Great Dividing Range, Victoria, Australia. Methods We used the method of Jost (Ecology, 2007, 88, 2427–2439) to partition c diversity into its a and b components. We undertook the analyses at both reach and catchment scales to explore whether inferences depended on scale of observation. Results We hypothesized that b diversity would make a large contribution to the c diversity of macroinvertebrates in our dendritic riverine landscape, particularly at the larger spatial scale (among catchments) because of limited dispersal among sites and especially among catchments. However, reaches each had relatively high taxon richness and high a diversity, while b diversity made only a small contribution to c diversity at both the reach and catchment scales. Main conclusions Dendritic riverine landscapes have been thought to generate high b diversity as a consequence of limited dispersal and high heterogeneity among individual streams, but this may not hold for all headwater stream systems. Here, a diversity was high and b diversity low, with individual headwater stream reaches each containing a large portion of c diversity. Thus, each stream could be considered to have low irreplaceability since losing the option to use one of these sites in a representative reserve network does not greatly diminish the options available for completing the reserve network. Where limited information on individual taxonomic distributions is available, or time and money for modelling approaches are limited, diversity partitioning may provide a useful ‘first-cut’ for obtaining information about the irreplaceability of individual streams or subcatchments when establishing representative freshwater reserves.",
    keywords = "Alpha diversity, beta diversity, diversity partitioning, headwater stream, irreplaceability, macroinvertebrates.",
    author = "Amber Clarke and {MAC NALLY}, Ralph and Nick Bond and P. Lake",
    year = "2010",
    doi = "10.1111/j.1472-4642.2010.00692.x",
    language = "English",
    volume = "16",
    pages = "725--736",
    journal = "Diversity and Distributions",
    issn = "1366-9516",
    publisher = "Wiley-Blackwell",

    }

    Conserving macroinvertebrate diversity in headwater streams: the importance of knowing the relative contributions of a and ß diversity. / Clarke, Amber; MAC NALLY, Ralph; Bond, Nick; Lake, P.

    In: Diversity and Distributions, Vol. 16, 2010, p. 725-736.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Conserving macroinvertebrate diversity in headwater streams: the importance of knowing the relative contributions of a and ß diversity

    AU - Clarke, Amber

    AU - MAC NALLY, Ralph

    AU - Bond, Nick

    AU - Lake, P.

    PY - 2010

    Y1 - 2010

    N2 - Aim We investigated partitioning of aquatic macroinvertebrate diversity in eight headwater streams to determine the relative contributions of a and b diversity to c diversity, and the scale dependence of a and b components. Location Great Dividing Range, Victoria, Australia. Methods We used the method of Jost (Ecology, 2007, 88, 2427–2439) to partition c diversity into its a and b components. We undertook the analyses at both reach and catchment scales to explore whether inferences depended on scale of observation. Results We hypothesized that b diversity would make a large contribution to the c diversity of macroinvertebrates in our dendritic riverine landscape, particularly at the larger spatial scale (among catchments) because of limited dispersal among sites and especially among catchments. However, reaches each had relatively high taxon richness and high a diversity, while b diversity made only a small contribution to c diversity at both the reach and catchment scales. Main conclusions Dendritic riverine landscapes have been thought to generate high b diversity as a consequence of limited dispersal and high heterogeneity among individual streams, but this may not hold for all headwater stream systems. Here, a diversity was high and b diversity low, with individual headwater stream reaches each containing a large portion of c diversity. Thus, each stream could be considered to have low irreplaceability since losing the option to use one of these sites in a representative reserve network does not greatly diminish the options available for completing the reserve network. Where limited information on individual taxonomic distributions is available, or time and money for modelling approaches are limited, diversity partitioning may provide a useful ‘first-cut’ for obtaining information about the irreplaceability of individual streams or subcatchments when establishing representative freshwater reserves.

    AB - Aim We investigated partitioning of aquatic macroinvertebrate diversity in eight headwater streams to determine the relative contributions of a and b diversity to c diversity, and the scale dependence of a and b components. Location Great Dividing Range, Victoria, Australia. Methods We used the method of Jost (Ecology, 2007, 88, 2427–2439) to partition c diversity into its a and b components. We undertook the analyses at both reach and catchment scales to explore whether inferences depended on scale of observation. Results We hypothesized that b diversity would make a large contribution to the c diversity of macroinvertebrates in our dendritic riverine landscape, particularly at the larger spatial scale (among catchments) because of limited dispersal among sites and especially among catchments. However, reaches each had relatively high taxon richness and high a diversity, while b diversity made only a small contribution to c diversity at both the reach and catchment scales. Main conclusions Dendritic riverine landscapes have been thought to generate high b diversity as a consequence of limited dispersal and high heterogeneity among individual streams, but this may not hold for all headwater stream systems. Here, a diversity was high and b diversity low, with individual headwater stream reaches each containing a large portion of c diversity. Thus, each stream could be considered to have low irreplaceability since losing the option to use one of these sites in a representative reserve network does not greatly diminish the options available for completing the reserve network. Where limited information on individual taxonomic distributions is available, or time and money for modelling approaches are limited, diversity partitioning may provide a useful ‘first-cut’ for obtaining information about the irreplaceability of individual streams or subcatchments when establishing representative freshwater reserves.

    KW - Alpha diversity

    KW - beta diversity

    KW - diversity partitioning

    KW - headwater stream

    KW - irreplaceability

    KW - macroinvertebrates.

    U2 - 10.1111/j.1472-4642.2010.00692.x

    DO - 10.1111/j.1472-4642.2010.00692.x

    M3 - Article

    VL - 16

    SP - 725

    EP - 736

    JO - Diversity and Distributions

    JF - Diversity and Distributions

    SN - 1366-9516

    ER -