Abundance and pest classification of scolytid species (Coleoptera: Curculionidae, Scolytinae) follow different patterns

Bußler, Heinz; Bouget, Christophe; Brustel, Hervé; Brändle, Martin; Riedinger, Verena; Brandl, Roland; Müller, Jörg

doi:10.1016/j.foreco.2011.08.011

Cited by 30 publications

(39 citation statements)

References 51 publications

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“…Furthermore, various day‐degree requirements for individual development of numerous and different forest insect species have been reported (Topp , Inward et al ). For several bark beetle species, the number of generations per year increases with increasing temperature and is related to their pest status (Jönsson et al , Bussler et al ). The range expansion and unprecedented outbreaks of bark beetles have been explained by global warming (Seidl et al , de la Giroday et al ).…”

Section: Discussionmentioning

confidence: 99%

Increasing temperature may compensate for lower amounts of dead wood in driving richness of saproxylic beetles

et al. 2014

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Global warming and land‐use change are expected to be additive threats to global diversity, to which insects contribute the highest proportion. Insects are strongly influenced by temperature but also require specific habitat resources, and thus interaction between the two factors is likely. We selected saproxylic beetles as a model group because their life cycle depends on dead wood, which is highly threatened by land use. We tested the extent to which higher temperatures compensate for the negative effects of low amounts of dead wood on saproxylic beetle species richness (Temperature–Dead wood compensation hypothesis) on both a macroclimate and a topoclimate scale (north‐ and south‐facing slopes). We analyzed 1404 flight‐interception trap catches across Europe to test for interaction effects of temperature and dead‐wood amount on species richness. To experimentally test our findings from the activity trap data, we additionally reared beetles from 80 bundles of dead wood initially exposed at high and low elevations. At the topoclimate scale, we analyzed trap catches and reared beetles from dead wood exposed in 20 forest stands on south‐facing and north‐facing slopes in one region. On the macroscale, both temperature and dead‐wood amount positively affected total and threatened species richness independently, but their interaction was significantly negative, indicating compensation. On both scales and irrespective of the method, species richness decreased with temperature decline. Our observation that increasing temperature compensates for lower amounts of dead wood has two important implications. First, managers of production forests should adapt their dead‐wood enrichment strategy to site‐specific temperature conditions. Second, an increase in temperature will compensate at least partially for poor habitat conditions in production forests. Such a perspective contrasts the general assumption of reinforcing impacts of global warming and habitat loss on biodiversity, but it is corroborated by recent range expansions of threatened beetle species.

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Section: Discussionmentioning

confidence: 99%

Increasing temperature may compensate for lower amounts of dead wood in driving richness of saproxylic beetles

et al. 2014

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“…This group of wood boring insects has tremendous ecological importance in most forest ecosystems – they influence nutrient cycling, canopy thinning, gap dynamics, biodiversity, soil structure, hydrology, disturbance regimes, and successional pathways (Raffa et al ., ). They are also responsible for widespread destruction of elm trees (Dutch elm disease), boreal conifer forests, the avocado industry, oak forests in Asia, and, not the least, they commonly figure as invasive species (Bussler et al ., ; Vega & Hofstetter, ). Although some of the most notorious invasives in this beetle group disperse widely on their own (Gohli et al ., ), they are frequently transported out their natural biogeographical regions and around the world in wooden packaging material (Haack, , ).…”

Section: Introductionmentioning

confidence: 99%

“…Conversely, widely distributed and highly abundant genera of host-plants may secure successful colonization of many areas for those species that specialize on such large monocultures. Hence, forest composition may determine the colonization success for invasive bark beetles, albeit with unpredictable outcomes (Bussler et al, 2011;Rassati et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Explaining biogeographical range size and measuring its effect on species diversification in bark beetles

Gohli

Jordal

2017

Journal of Biogeography

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Aim To test whether geographical range size is influenced by ecological factors and whether species diversification increases with range sizes in bark beetles. Location Global Methods Here, we (1) evaluate how several predictors – namely mode of reproduction, symbiotic associations with fungi, host‐plant type, utilization of specific host‐plant clades, and level of host‐plant specialization – influence geographical range size, and (2) explicitly test whether range size is associated with species diversification. Analyses were performed with a dataset of 109 genera using Ornstein‐Uhlenbeck adaptation models which control for phylogenetic constraints. Results We found regular inbreeding by sibling mating to predict an increase in geographical range size, whereas angiosperm hosts type predicted smaller geographical ranges compared to gymnosperm associated lineages. Variation in range size was also associated with utilization of specific host‐plant clades, with conifers being the strongest predictor. Furthermore, the number of utilized host‐plant clades showed a positive association with genera level range size. Our analyses also found fungus farming to predict a reduction in geographical range size, but with a smaller effect size than for inbreeding and host‐type. Lastly, we found a strong positive association between biogeographical range size and species diversification rates. Main conclusions We conclude that allopatric speciation is an important contributor to the distribution of species richness in bark beetles. Our study supports the idea that range expansion and speciation are intrinsically linked, and that reproductive behaviour and host‐type preference – through their influence on biogeographical dispersal ability – are ultimately determining factors of species diversification in bark beetles.

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“…Nevertheless, we are aware that the low Ciidae species richness of a geographically restricted and rare host fungus could also contain a statistical component caused by under‐sampling of this fungus. This is a general problem of studies that compile existing literature dealing with host–parasite interactions (Kennedy & Southwood, ; Brändle & Brandl, ; Bussler et al ., ). However, Reibnitz () conducted an exhaustive field survey to cover rare species of fungi as well.…”

Section: Discussionmentioning

confidence: 99%

Host abundance, durability, basidiome form and phylogenetic isolation determine fungivore species richness

Thorn

Müller

Bässler

et al. 2015

Biol J Linn Soc Lond

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Species with close associations to a specific host species, such as parasites and phytophages, make immense contributions to biodiversity. Hence, factors determining the variation in species richness among hosts are a main focus of ecological research. Investigations of determining factors of fungivorous species among host species are still scarce. Based on ecological patterns of parasites and phytophages, we hypothesized that the species richness of tree‐fungus beetles of the family Ciidae (Coleoptera) would increase with increasing basidiome size, niche diversity of the growth form, durability, increasing abundance and decreasing phylogenetic isolation of the host fungus. Our generalized least‐squares model, controlled by host phylogeny, revealed that Ciidae species richness increases with host abundance, but decreases with host phylogenetic isolation. In contrast with our prediction, Ciidae species richness was higher in annual basidiomes than in perennials. Pileate basidiomes revealed higher species richness than resupinate and stipitate basidiomes, which may be interpreted as being a result of their higher host niche diversity. The importance of host abundance, measured on the landscape scale, corroborates that fungivore species richness among macrofungal hosts is determined by factors similar to those that determine parasite and phytophage species richness among their hosts. © 2015 The Linnean Society of London, Biological Journal of the Linnean Society, 2015, 114, 699–708.

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Abundance and pest classification of scolytid species (Coleoptera: Curculionidae, Scolytinae) follow different patterns

Cited by 30 publications

References 51 publications

Increasing temperature may compensate for lower amounts of dead wood in driving richness of saproxylic beetles

Increasing temperature may compensate for lower amounts of dead wood in driving richness of saproxylic beetles

Explaining biogeographical range size and measuring its effect on species diversification in bark beetles

Host abundance, durability, basidiome form and phylogenetic isolation determine fungivore species richness

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