Succession of Diptera on dead beech wood: A 10-year study

Hövemeyer, Klaus; Schauermann, J.

doi:10.1078/0031-4056-00170

Cited by 44 publications

(33 citation statements)

References 11 publications

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“…Similarly, individual pieces of CWM with larger diameter [and thus presumably volume] have higher beetle richness than smaller pieces (Jonsell et al 1998). However, for other groups of saproxylic insects such as flies (Order: Diptera), species richness has been reported to increase (Hovemeyer and Schauermann 2003) or decrease (Schiegg 2001) with log diameter and little information is available on how changes in CWM volume at the stand-level will effect species richness.…”

Section: Introductionmentioning

confidence: 99%

“…Downed coarse woody material (CWM) is widely regarded as an important conservation element in managed forest ecosystems (Siitonen 2001, Franklin et al 2002 providing habitat for numerous species including saproxylic arthropods (Schiegg 2001, Grove 2002, Hovemeyer and Schauermann 2003, Hammond et al 2004, fungi (Edman and Jonsson 2001) and mammals (Lee 2004). For groups such as saproxylic beetles, volumes of CWM within forest stands are strongly and positively correlated with species richness at least in mature and old-growth stands (Martikainen et al 2000).…”

Section: Introductionmentioning

confidence: 99%

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Estimating species loss of saproxylic insects under scenarios of reduced coarse woody material in eastern boreal forests

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Hibbert

2011

Ecosphere

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Abstract. Increased exploitation of forests and residual biomass remaining after harvest has the potential to reduce biodiversity particularly of saproxylic organisms. We compare incidence-based species accumulation curves based on saproxylic flies collected using in situ emergence cages in 2006 and 2007 under two biomass harvesting scenarios. In these scenarios volume-based biomass targets would be achieved by either 1) selective removal of the largest individual pieces of coarse woody material (CWM) or alternatively 2) selective removal of smaller pieces of CWM with preferential retention of larger pieces of CWM with presumably greater conservation value. We then extrapolated a species accumulation curve to estimate thresholds of potential species loss as a function of CWM volume left within a forest stand using binomial mixing. More species would be maintained under the scenario that selectively targets larger individual pieces of CWM because of extremely large species turnover between individual sample logs and little relation between species richness and diameter of CWM. Given these circumstances, the number of individual pieces of CWM present in a stand may be more important in determining species richness than total volume of CWM for flies. When the species accumulation curve was extrapolated to stand-level volumes, species richness began to decline when CWM volumes were reduced below 40 m 3 /ha. We suggest that intensive management strategies aimed at recovering additional woody biomass should not exploit CWM volumes below these thresholds without mitigative measures aimed at replenishing dead wood volumes such as standing retention if maintaining biodiversity is an objective.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimating species loss of saproxylic insects under scenarios of reduced coarse woody material in eastern boreal forests

Work

Hibbert

2011

Ecosphere

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“…As a general pattern, saproxylic insects respond to different aspects of dead wood availability, such as total amount (Økland et al 1996;Martikainen et al 2000), quality (Irmler et al 1996;Schiegg 2001;Ho¨vemeyer and Schauermann 2003;Similaë t al. 2003) or spatial distribution (Schiegg 2000).…”

Section: Introductionmentioning

confidence: 99%

Contrasting Responses of Saproxylic Insects to Focal Habitat Resources: The Example of Longhorn Beetles and Hoverflies in Belgian Deciduous Forests

et al. 2006

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Although both saproxylic longhorn beetles and hoverflies benefit from the presence of woody substrates for reproduction, they differ in their requirements for floral resources and for microbiotopes of overmature and senescent trees. This led us to expect contrasting responses between the two species groups in relation to these essential resources. We examined this prediction in 22 mature oak-and beech-dominated stands of southern Belgium by relating their species assemblages to local vegetation structure and composition, altitude and landscape composition. Stands were organised in pairs as a function of their overall dead wood supply. Free-hanging window traps, stump emergence traps and Malaise traps produced 30 longhorn beetle species (1637 individuals) and 106 hoverfly species (3020 individuals). Paired-comparisons controlling for annual variation in captures showed that, unlike saproxylic hoverflies, stands with dead wood hosted more species and individuals of longhorn beetles. Accordingly, the two species groups were found to be independent on ordination axes, responding to different sets of environmental conditions. While stands dominated by oaks with a high snag volume were highly favoured by longhorn beetles, saproxylic and threatened syrphids were limited to open-stands with large trees and a well-developed, species rich herb layer providing the floral resources required for their reproduction. Our results suggest that, when defining criteria to identify or restore important habitats for saproxylic insect conservation, variables related to different aspects of dead wood supply should not be the only criteria taken into account.

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“…In any case, the presence of vegetable organic matter is necessary for larval development. In fact, larvae of C. lutescens as well as C. belgica (Becker, 1912) (Hö vemeyer & Schauermann 2003 were found on decaying vegetable organic matter and in dead wood (Venturi 1956). The same was observed for other species belonging to the Chioneinae subfamily in which Chionea is included (Podeniene et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Studies on the distribution and ecology of snow fliesChionea lutescensandChionea alpina(Diptera, Limoniidae) in Italy

Vanin

Masutti

2008

Italian Journal of Zoology

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We report here the results of studies on two species of Chionea (subgenus Sphaeconophilus), based on 328 specimens of C. alpina and 242 of C. lutescens collected in Italy. The insects were collected using different methods during the period 1969-2006. Sampling was mainly carried out in the Alps, although some records from the Apennines were also obtained. Specimens of C. lutescens were collected for the first time in the regions Lazio and Abruzzo (Central Italy) and these records represent the southern distribution limits of this species in Italy. Samples collected in the Apennines, in the region Emilia Romagna, represent the southern limits of C. alpina. For both species, most specimens were found on snow, in different ecosystems, both in habitats rich of vegetation (beech forest, spruce forest, Pinus mugo ecosystem, alpine meadow) and at higher altitude on stony ground in glacier retreat zones. However, several samples were obtained in caves or using subnivean pitfall traps. No specimens of C. lutescens were collected in caves, whereas c. 19% of the collected C. alpina came from this environment. The obtained data highlight that C. alpina is active in an altitudinal range between 1100 and 2500 m a.s.l. whereas C. lutescens were collected between 800 and 2000 m a.s.l. Considering the ecological (e.g. microclimate, presence inside caves) and geographical (e.g. limits of distribution) data, it is possible to assert that the distribution of the subgenus Sphaeconophilus is related to the glacial events which occurred during the Pleistocene period.

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Succession of Diptera on dead beech wood: A 10-year study

Cited by 44 publications

References 11 publications

Estimating species loss of saproxylic insects under scenarios of reduced coarse woody material in eastern boreal forests

Estimating species loss of saproxylic insects under scenarios of reduced coarse woody material in eastern boreal forests

Contrasting Responses of Saproxylic Insects to Focal Habitat Resources: The Example of Longhorn Beetles and Hoverflies in Belgian Deciduous Forests

Studies on the distribution and ecology of snow fliesChionea lutescensandChionea alpina(Diptera, Limoniidae) in Italy

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