Species richness of saproxylic beetles in woodlands is affected by dispersion ability of species, age and stand size

Irmler, Ulrich; Arp, Helge; Nötzold, Rolf

doi:10.1007/s10841-009-9249-7

Cited by 37 publications

(31 citation statements)

References 21 publications

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“…These landscapes have become exceedingly rare and T. opacus now has a distribution restricted to the most oak-rich areas in Sweden. Looking at individual forest patches, a recent study of saproxylic beetles in Germany studying deciduous forest patches of different size and age, showed that the highest diversity of low-mobility species were found in patches larger than 100 ha and older than 130 years (Irmler et al, 2010). Maps showing oak distribution, and the predicted range of three species' (!50% probability of occurrence) in the same landscape based on the species characteristic scale of response (CSR) and requirements of oak density; Mycetophagus piceus (grey areas), CSR = 2284 m, 0.03 oaks ha À1 , Calambus bipustulatus (black areas), CSR = 106 m, 3.9 oaks ha À1 , Tenebrio opacus (grey for the broad scale and black for the fine scale), CSR 1 = 92 m, 6.2 oaks ha À1 , CSR2 = 859 m, 0.7 oaks ha À1 .…”

Section: Discussionmentioning

confidence: 99%

How much and at what scale? Multiscale analyses as decision support for conservation of saproxylic oak beetles

Bergman

Jansson

Claesson

et al. 2012

Forest Ecology and Management

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Section: Discussionmentioning

confidence: 99%

How much and at what scale? Multiscale analyses as decision support for conservation of saproxylic oak beetles

Bergman

Jansson

Claesson

et al. 2012

Forest Ecology and Management

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“…Local factors such as patch quality (French et al 2008;Fuentes-Montemayor et al 2012), management history (Wulf 2004), ecological continuity (Nordén and Appelqvist 2001;Fritz et al 2008) and patch area (Dolman et al 2007;Lindborg et al 2012) are also known to affect biodiversity. However, it can be difficult to separate out the impacts of these local factors as they often work in tandem with the matrix (Prevedello and Vieira 2010) and other landscape attributes such as the amount of surrounding habitat surrounding a patch (Andrén 1994;Hinsley et al 1995;Fischer and Lindenmayer 2007;Hodgson et al 2011) and the degree of isolation between habitat patches (Brunet 2007;Irmler et al 2010;Fuentes-Montemayor et al 2013). Changes in landscape pattern and composition also have species-specific impacts depending on species mobility Kindlmann and Burel 2008) and operate at a range of different spatial and temporal scales (Bennett et al 2006), making it difficult to generalise between taxa and localities.…”

Section: Introductionmentioning

confidence: 99%

What can studies of woodland fragmentation and creation tell us about ecological networks? A literature review and synthesis

et al. 2014

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The development of ecological networks could help reverse the effects of habitat fragmentation on woodland biodiversity in temperate agricultural landscapes. However, efforts to create networks need to be underpinned by clear evidence of the relative efficacy of local (e.g. improving or expanding existing habitat patches) versus landscape-scale actions (e.g. creating new habitat or corridors in the landscape matrix). Using cluster analyses we synthesised the findings of 104 studies, published between 1990 and 2013 focusing on the responses of woodland vascular plant, vertebrate, cryptogam and invertebrate species to local and landscape variables. Species responses (richness, diversity, occurrence) were strongly influenced by patch area, patch characteristics (e.g. stand structure) and isolation (e.g. distance between habitat patches). Patch characteristics were of overriding importance for all species groups, especially cryptogams. Many studies recording significant species responses to patch characteristics did not record significant responses to patch area and vice versa, suggesting that patch area may sometimes act as a surrogate for patch characteristics (i.e. larger patches being of ‘better quality’). Ecological continuity was important for vascular plants, but assessed in only a few vertebrate and invertebrate studies. Matrix structure (e.g. presence of corridors) was important for vertebrates, but rarely assessed for other species groups. Actions to develop ecological networks should focus on enhancing the quality and/or size of existing habitat patches and reducing isolation between patches. However, given that very few studies have assessed all local and landscape variables together, further information on the relative impacts of different attributes of ecological networks in temperate agricultural landscapes is urgently needed

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“…Coscaron et al 2009;Danielsen et al 2009). In analogy to extrapolation, also rarefaction methods are frequently used to overcome influences of uneven sampling effort or sampling success on species counts (Irmler et al 2010).…”

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confidence: 99%

Species richness measures fail in resolving diversity patterns of speciose forest moth assemblages

Fiedler

Truxa

2012

Biodivers Conserv

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We used data from a light-trapping study at 28 sites on floodplain forest moths in eastern Austria to assess the performance of a variety of species richness and species diversity measures. At each site the data (32,181 individuals from 448 species) contain a large fraction of species represented only as singletons. Sampling effort was evenly spread across sites, but sampling success varied greatly. Influx of moths from the landscape matrix surrounding floodplain forest patches lead to substantial proportions of stray individuals from the regional species pool. Under these conditions, observed species numbers as well as eight extrapolation estimators of species totals failed to reflect differences between three study regions or between flooded and non-flooded forest habitats. Rarefied species numbers and Fisher's a of the log-series distribution captured differences in moth diversity between regions, but failed to mirror flooding impact. Only Shannon's diversity captured all expected diversity differences, at high significance levels. Application of Chao and Shen's bias correction increased figures of Shannon's diversity, but did not affect the outcome of statistical comparisons. We conclude that for species-rich incompletely sampled communities of highly mobile insects the evaluation of the complete species-abundance information using Shannon's diversity is the most promising mode to compare local species diversity with a high degree of ecological resolution. Species richness measures apart from those obtained through rarefaction cannot be recommended, as they are sensitive to sources of bias that pertain to many empirical sets of field data.

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Species richness of saproxylic beetles in woodlands is affected by dispersion ability of species, age and stand size

Cited by 37 publications

References 21 publications

How much and at what scale? Multiscale analyses as decision support for conservation of saproxylic oak beetles

How much and at what scale? Multiscale analyses as decision support for conservation of saproxylic oak beetles

What can studies of woodland fragmentation and creation tell us about ecological networks? A literature review and synthesis

Species richness measures fail in resolving diversity patterns of speciose forest moth assemblages

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