Habitat characteristics of the endangered flightless beetle Dorcadion fuliginator (Coleoptera: Cerambycidae): implications for conservation

Baur, Bruno; Zschokke, Samuel; Coray, Armin; Schläpfer, Martin; Erhardt, Andreas

doi:10.1016/s0006-3207(01)00117-3

Cited by 23 publications

(19 citation statements)

References 11 publications

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“…Longhorn beetle diversity and distribution was shown to be affected by forest management practices [6], [7], [8], [9], [10], invasive tree species [11], habitat destruction and degradation [12], [13], habitat fragmentation [14], environmental gradients [15], disturbances of fire, drought and windstorm [16], [17], [18], [19], [20], [21], spatial heterogeneity [22] and effects of host species preferences [23]. Conclusions drawn from those studies are that most longhorn beetle species are concentrated on undisturbed or primary forest, whereas secondary forest and artificial plantations support less species.…”

Section: Introductionmentioning

confidence: 99%

Tree Diversity Mediates the Distribution of Longhorn Beetles (Coleoptera: Cerambycidae) in a Changing Tropical Landscape (Southern Yunnan, SW China)

Meng

Martin

Weigel³

et al. 2013

PLoS ONE

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Longhorn beetles (Coleoptera : Cerambycidae) have been used to identify sites of high biological diversity and conservation value in cultivated landscapes, but were rarely studied in changing landscapes of humid tropics. This study was conducted in a region of southern Yunnan, China, which was dominated by natural rainforest until 30 years ago, but is successively transformed into commercial rubber monoculture plantations since that time. The objectives were to investigate longhorn beetle species diversity and distribution in the major land use types of this landscape and to estimate the effects of an expected expansion of rubber plantations on the longhorn beetle assemblages. The results showed that tree species diversity (181 species in total) and longhorn beetle diversity (220 species in total) were closely related with no significant differences between the tree and longhorn beetles assemblages shown by similarity distance analysis. There was a highly positive relationship between the estimated species richness of longhorn beetles and the number of tree species. Individual numbers of longhorn beetles and trees were also highly positive related at the sampling sites. Non-metric multidimensional scaling revealed that the degree of canopy coverage, succession age and tree diversity explained 78.5% of the total variation in longhorn beetle assemblage composition. Natural forest sites had significantly higher numbers of species and individuals than any other type of habitat. Although young rubber plantations bear the highest longhorn beetle diversity outside forests (half of the total number of longhorn beetle species recorded in total), they can not provide permanent habitats for most of these species, because they develop into closed canopy plantations with less suitable habitat conditions. Therefore, along with an expected expansion of rubber cultivation which largely proceeds at the expense of forest areas, the habitat conditions for longhorn beetles in this region might decrease dramatically in future.

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Section: Introductionmentioning

confidence: 99%

Tree Diversity Mediates the Distribution of Longhorn Beetles (Coleoptera: Cerambycidae) in a Changing Tropical Landscape (Southern Yunnan, SW China)

Meng

Martin

Weigel³

et al. 2013

PLoS ONE

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“…Monitoring research should now focus on a new set of questions. We need better information on how land falling under agroenvironmental schemes functions in the context of entire landscapes (Thies & Tscharntke 1999) and how specific desirable species react to it (Welch 1995; Kleijn et al 2001; Baur et al 2002). Even if set‐aside land fails to protect some species of special concern, it is nevertheless successful at locally enhancing biodiversity typical of traditional agricultural landscapes and therefore may have positive consequences for ecological processes in agroecosystems (Altieri 1999; Loreau et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Enhancement of Farmland Biodiversity within Set‐Aside Land

Buskirk

Willi

2004

Conservation Biology

182

122

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The efficacy of agricultural set-aside policies for protecting farmland biodiversity is widely debated.Based on a meta-analysis of 127 published studies, we found that land withdrawn from conventional production unequivocally enhances biodiversity in North America and Europe. The number of species of birds, insects, spiders, and plants is 1-1.5 standard deviation units higher on set-aside land, and population densities increase by 0.5-1 standard deviation units. Set-aside land may be especially beneficial for desirable taxa because North American bird species that have exhibited population declines react most positively to set-aside agricultural land. Larger and older plots protect more species and higher densities, and set-aside land is more effective in countries with less-intensive agricultural practices and higher fractions of land removed from production. Although policies specifically designed to protect biodiversity might work even better, current incentives clearly improve the standing of plants and animals in farmland. Mejora de la Biodiversidad en Tierras Cultivadas dentro de Terrenos de ReservaResumen: La eficiencia de las políticas de reservas agrícolas para la protección de la biodiversidad en tierras cultivadas estaámpliamente debatida. Con base en un meta-análisis de 127 estudios publicados, encontramos que terrenos retirados de la producción convencional inequívocamente mejoran la biodiversidad en Norte América y Europa. El número de especies de aves, insectos, arañas y plantas es 1-1.5 unidades de desviación estándar más alto en terrenos de reserva, y las densidades de población incrementan en 0.5-1 unidades de desviación estándar. Los terrenos de reserva pueden ser especialmente benéficos para taxones deseables porque especies de aves norteamericanas que han presentado una declinación poblacional reaccionan positivamente a terrenos agrícolas de reserva. Parcelas más grandes y viejas protegen a más especies y tienen mayores densidades, y los terrenos de reserva son más efectivos en países con prácticas agrícolas menos intensivas y con mayores fracciones de tierras removidas de la producción. Aunque las políticas diseñadas específicamente para proteger la biodiversidad pueden ser mejores aún, los incentivos actuales claramente mejoran la situación de plantas y animales en tierras agrícolas.

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“…We monitored the relative population size of the rare, highly endangered longhorn beetle Iberodorcadion fuliginator (L., 1758) (formerly Dorcadion fuliginator) in 13 grassland sites in the border region of Switzerland, France and Germany at yearly intervals over a period of 20 years (1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018); Figs 1 and S1). This flightless beetle inhabits different types of extensively managed grasslands and suffers from a dramatic decline of suitable habitat throughout its distribution area (Coray et al, 2000;Niehuis, 2000;Baur et al, 2002;Schmidl & Bussler, 2003), which extends from the Spanish Pyrenees through Central Europe to the eastern part of Germany and from southern Holland to the northern border of Switzerland (Horion, 1974;Villiers, 1978;Vives, 1983Vives, , 2001Althoff & Danilevsky, 1997). Because of its rarity and endangerment, the species is protected by law in Switzerland, Germany and in the Netherlands (Niehuis, 2000;Monnerat et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Factors contributing to the decline of an endangered flightless longhorn beetle: A 20‐year study

Baur

Coray

Lenzin

et al. 2020

Insect Conserv Diversity

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World‐wide decreases of insect abundance and diversity are of major concern because of their importance for ecosystem functioning and the stability of ecosystems. Various studies reported dramatic declines of butterflies, wild bees and beetles in agricultural areas. Yet, evidence for decreasing abundance in cryptic insect species is scarce. Using a transect‐count technique, we monitored the relative population size of the endangered flightless grassland longhorn beetle Iberodorcardion fuliginator in 13 dry, semi‐natural grassland sites in the border region of Switzerland, France, and Germany at yearly intervals over 20 years (1999–2018). To disentangle potential causes for changes in I. fuliginator abundance over time, we recorded quantitatively the plant communities in all sites in 2004 and 2017 and changes in other habitat characteristics. We found that the overall abundance of I. fuliginator individuals decreased by 90% over 20 years: at one site the population went extinct, at five sites the populations were critically decreasing, at four sites the populations were decreasing and at only three sites population size remained stable. Linear models revealed that the factor ‘change in plant species composition’ is the main driver for the decrease in beetle abundance. Alternative models indicated that – in addition to vegetation changes – area of suitable habitat and low heat load affected the probability of decreasing population size. Our study shows that gradual habitat deterioration measured as reduction in grass cover and change in plant species composition negatively affect the abundance of the highly specialised beetle I. fuliginator.

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Habitat characteristics of the endangered flightless beetle Dorcadion fuliginator (Coleoptera: Cerambycidae): implications for conservation

Cited by 23 publications

References 11 publications

Tree Diversity Mediates the Distribution of Longhorn Beetles (Coleoptera: Cerambycidae) in a Changing Tropical Landscape (Southern Yunnan, SW China)

Tree Diversity Mediates the Distribution of Longhorn Beetles (Coleoptera: Cerambycidae) in a Changing Tropical Landscape (Southern Yunnan, SW China)

Enhancement of Farmland Biodiversity within Set‐Aside Land

Factors contributing to the decline of an endangered flightless longhorn beetle: A 20‐year study

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