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101 results for “saproxylic beetles”
Figs 6, 7 in Effects of diet and feed composition on antibacterial activity of hemolymph of saproxylic beetles: A case study of Zophobas atratus (Coleoptera: Tenebrionidae)
Figs 6, 7. Results of photometric bacterial test. Viability of gram-negative E. сoli ATCC
Figs 4, 5 in Effects of diet and feed composition on antibacterial activity of hemolymph of saproxylic beetles: A case study of Zophobas atratus (Coleoptera: Tenebrionidae)
Figs 4, 5. Results of photometric bacterial test. Dynamics of effects of artificial and
Fig. 4 in A Review Of Latvian Saproxylic Beetles From The European Red List
Fig. 4. Boros schneideri (Panzer, 1795).
Fig. 3 in A Review Of Latvian Saproxylic Beetles From The European Red List
Fig. 3. Hylochares cruentatus (Gyllenhal, 1808).
Fig. 2 in Diversity Of Saproxylic Beetles (Hexapoda: Coleoptera) In Clear-Cut Sites With Removed And Retained Stumps In Central Latvia
Fig. 2. Window trap in clear-cut area with retained stumps (Control plot – O2).
Fig. 1 in Diversity Of Saproxylic Beetles (Hexapoda: Coleoptera) In Clear-Cut Sites With Removed And Retained Stumps In Central Latvia
Fig. 1. Window traps in clear-cut area with removed stumps (Plot - O1).
Data from: Forest age drives saproxylic beetle biodiversity in the southeastern United States
<p><strong>Data from: Forest age drives saproxylic beetle biodiversity in the southeastern United States </strong></p> <p>Clayton R. Traylor, Michael D. Ulyshen, Joseph V. McHugh</p> <p><em>Biological Conservation </em>285: 110238.</p> <p><a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.biocon.2023.110238" target="_blank" rel="noreferrer noopener"><span>https://doi.org/10.1016/j.biocon.2023.110238</span></a></p> <p> </p> <p>Abstract from paper:</p> <p>Old forests are valuable for biodiversity conservation because they provide uninterrupted forest cover over time<br>and late-successional habitat, promoting low-mobility and late-successional species. However, forest age may be<br>less important in highly forested landscapes because dispersal limitation is reduced. We investigated how species<br>richness and community composition of saproxylic beetles (Coleoptera) are influenced by forest age and the surrounding<br>landscape in the southeastern United States (Georgia). Forests in this region are highly fragmented and<br>dominated by early-successional stands. We sampled beetles in 20 old forests (mature in 1938) and 20 young<br>forests (originating after 1938), located along a landscape forest cover (LFC) gradient. Old and young forests<br>were structurally similar but tree communities differed along a Quercus (old) to Pinus (young) gradient. Regional<br>diversity of saproxylic beetles was higher in old forests, and high species turnover between forest age groups suggests<br>they both help to maintain regional biodiversity. Two models of local richness had near equal merit: one<br>showed higher richness in old forests regardless of LFC, while the other showed higher richness in old forests at<br>high LFC. Contrary to expectations, neither model supports old forests losing importance in highly forested landscapes.<br>Higher richness in old forests is likely due to temporal stability and late-successional habitat, promoting<br>low-mobility and specialist species. Because the land area of young forests exceeds that of old forests, old forests<br>are disproportionately important for saproxylic biodiversity in the region.</p>
Morphological trait database of saproxylic beetles
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Data from: How do attached crown parts and branches contribute to the diversity of saproxylic fungi and beetles in downed and decaying spruce trees?
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Influence of tree hollow characteristics and forest structure on saproxylic beetle diversity in tree hollows in managed forests in a regional comparison
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High-resolution 3D forest structure explains ecomorphological trait variation in assemblages of saproxylic beetles
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Surrounding landscape composition influences saproxylic beetle assemblages after prescribed burning
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Data from: Oviposition and larval mycelia preference of the saproxylic European stag beetle
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Diversity and conservation of saproxylic beetles in 42 European tree species: an experimental approach using early successional stages of branches
<p><strong>Correction: In the original version of this dataset, the non‐native <em>Prunus serotina</em> was incorrectly interchanged with the native <em>Prunus padus</em>, and eight individuals of saproxylic beetles were incorrectly removed from the data when splitting beetles in saproxylic and non‐saproxylic species. The correct tree species is <em>Prunus serotina</em>, and results refer to a total of 113 species of saproxylic beetles and 30,550 individuals. </strong></p> <p>1. Tree species diversity is important to maintain saproxylic beetle diversity in managed forests. However, knowledge about the conservational importance of single tree species and implications for forest management and conservation practices are lacking.</p> <p>2. We exposed freshly cut branch-bundles of 42 tree species, representing tree species native and non-native to Europe, under sun-exposed and shaded conditions for one year. Afterwards, communities of saproxylic beetles were reared ex-situ for two years. We tested for the impact of tree species and sun exposure on alpha-, beta-, and gamma diversity as well as composition of saproxylic beetle communities.</p> <p>3. Tree species had a lower impact on saproxylic beetle communities compared to sun exposure. The diversity of saproxylic beetles varied strongly among tree species, with highest alpha- and gamma-diversity found in <i>Quercus petraea</i>. Red-listed saproxylic beetle species occurred ubiquitously among tree species. We found distinct differences in the community composition of broadleaved and coniferous tree species, native and non-native tree species as well as sun-exposed and shaded deadwood.</p> <p>4. Our study enhances the understanding of the importance of previously understudied and non-native tree species for the diversity of saproxylic beetles. To improve conservation practices for saproxylic beetles and especially red-listed species, we suggest a stronger incorporation of tree species diversity and sun exposure into forest management strategies, including the enrichment of deadwood from native tree species and with a specific focus on locally rare or silvicultural less important tree species.</p>
Data from: Conservation value of low-productive forests measured as the amount and diversity of dead wood and saproxylic beetles
In many managed landscapes, low-productive land comprises most of the remaining relatively untouched areas, and is often over-represented within protected areas. The relationship between the productivity and conservational value of a site is poorly known; however, it has been hypothesized that biodiversity increases with productivity due to higher resource abundance or heterogeneity, and that the species communities of low-productive land are a nested sub-set of communities from more productive land. We tested these hypotheses for dead wood-dependent beetles by comparing their species richness and composition, as well as the amount and diversity of dead wood, between low-productive (potential forest growth < 1 m3 ha-1 year-1) and productive Scots pine-dominated stands in Sweden. We included four stand types: stands situated on (i) thin soils and (ii) mires (both low-productive), (iii) managed stands, and (iv) unmanaged stands set aside for conservation purposes (both productive). Beetle species richness and number of red-listed species were highest in the productive set-asides. Species richness was positively correlated with the volume and diversity of dead wood, but volume appeared to be a better predictor than diversity for the higher species richness in set-asides. Beetle species composition was similar among stand types, and the assemblages in low-productive stands were largely subsets of those in productive set-asides. However, 11% of all species and 40% of red-listed species only occurred in productive stands, while no species were unique to low-productive stands. We conclude that low-productive forests are less valuable for conservation than productive forest land. Given the generally similar species composition among stand types, a comparable conservational effect could be obtained by setting aside a larger area of low-productive forest in comparison to the productive. In terms of dead wood volumes, 1.8–3.6 ha of low-productive forest has the same value as 1 ha of unmanaged productive forest. This figure can be used to estimate the conservation value of low productive forests; however, as productive forests harbored some unique species, they are not completely exchangeable.
Data from: The indicator side of tree microhabitats: a multi-taxon approach based on bats, birds and saproxylic beetles
1. National and international forest biodiversity assessments largely rely on indirect indicators, based on elements of forest structure that are used as surrogates for species diversity. These proxies are reputedly easier and cheaper to assess than biodiversity. Tree microhabitats – tree-borne singularities such as cavities, conks of fungi or bark characteristics – have gained attention as potential forest biodiversity indicators. However, as with most biodiversity indicators, there is a lack of scientific evidence documenting their quantitative link with the biodiversity they are supposed to assess. 2. We explored the link between microhabitat indices and the richness and abundance of three taxonomic groups: bats, birds, and saproxylic beetles. Using a nation-wide multi-taxon sampling design in France, we compared 213 plots located inside and outside strict forest reserves. We hypothesized that the positive effect setting aside forest reserves has on biodiversity conservation is indirectly due to an increase in the proportion of large structural elements (e.g. living trees, standing and lying deadwood). These, in turn, are likely to favour the quantity and diversity of microhabitats. We analysed the relationship between the abundance and species richness of different groups and guilds (e.g. red-listed species, forest specialists, cavity dwellers) and microhabitat density and diversity. We then used confirmatory structural equation models to assess the direct and indirect effects of management abandonment, large structural elements and microhabitats on the biodiversity of the target species. 3. For several groups of birds and bats, the indirect effect of management abandonment and large structural elements on biodiversity was mediated by microhabitats. However, the magnitude of the link between microhabitat indices and biodiversity was moderate. In particular, saproxylic beetles' biodiversity was poorly explained by microhabitats, large structural elements or management abandonment. 4. Synthesis and applications: Tree microhabitats may serve as indicators for bats and birds, but they are not a universal biodiversity indicator. Rather, compared to large structural elements, they most likely have a complementary role to biodiversity. In terms of forest management and conservation, preserving diversity of microhabitats at the local scale benefits several groups of both bats and birds.
FIGURE 2 in The Eucnemidae (Coleoptera) of the Maritime Provinces of Canada: new records, observations on composition and zoogeography, and comments on the rarity of saproxylic beetles
FIGURE 2. The distribution of Epiphanis cornutus (Eschscholtz) and Hylis terminalis (LeConte) in the Maritime Provinces of Canada.
FIGURE 4 in The Eucnemidae (Coleoptera) of the Maritime Provinces of Canada: new records, observations on composition and zoogeography, and comments on the rarity of saproxylic beetles
FIGURE 4. The distribution of Onichodon canadensis (Brown), Dromaeolus harringtoni Horn, Deltometopus amoenicornis (Say), and Nematodes penetrans (LeConte), in the Maritime Provinces of Canada.
FIGURE 1 in The Eucnemidae (Coleoptera) of the Maritime Provinces of Canada: new records, observations on composition and zoogeography, and comments on the rarity of saproxylic beetles
FIGURE 1. The distribution of Isorhipis ruficornis (Say) and Isorhipis obliqua (Say) in the Maritime Provinces of Canada.
FIGURE 3 in The Eucnemidae (Coleoptera) of the Maritime Provinces of Canada: new records, observations on composition and zoogeography, and comments on the rarity of saproxylic beetles
FIGURE 3. The distribution of Microrhagus pectinatus LeConte, Microrhagus subsinuatus LeConte, and Microrhagus triangularis (Say) in the Maritime Provinces of Canada.
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