Insect conservation in temperate biomes: issues, progress and prospects.

Stewart, Alan J. A.; New, T. R.

doi:10.1079/9781845932541.0001

Cited by 16 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our present study highlights that insect taxa may respond differently to management intensity and local and landscape factors, and that regional characteristics can influence their responses. This conclusion must be taken into consideration when developing conservation‐oriented agri‐environmental schemes and a community‐based approach to insect conservation (Stewart & New, 2007).…”

Section: Discussionmentioning

confidence: 99%

Effects of grazing, vegetation structure and landscape complexity on grassland leafhoppers (Hemiptera: Auchenorrhyncha) and true bugs (Hemiptera: Heteroptera) in Hungary

Kőrösi

Batáry

Orosz

et al. 2011

Insect Conserv Diversity

View full text Add to dashboard Cite

Abstract. 1. Agricultural intensification is a major cause of biodiversity loss in European farmlands. Grasslands are particularly important habitats for the conservation of rich insect assemblages of Central and Eastern Europe. Although regular grazing or mowing of these grasslands is required to maintain diversity, there is no information about how such management and other factors influence Hemiptera assemblages. 2. We studied leafhopper and true bug assemblages in semi‐natural grasslands in three regions of the Great Hungarian Plain. We investigated how local vegetation factors and landscape complexity influence assemblages and whether they interact with management effects. 3. Seven pairs of intensively (>1 cow/ha) versus extensively (∼0.5 cow/ha) grazed pastures were sampled in each region by sweep‐netting. 4. Sward height was the most important explanatory factor for leafhoppers (84 species, 27264 individuals), as it increased both species number and abundance, and influenced assemblage composition. The extent of grassland surrounding the sample sites negatively affected leafhoppers, whereas extensive grazing decreased abundance and influenced composition. True bug assemblages (140 species, 6656 individuals) were positively affected only by mean sward height, whereas regional differences determined the community composition of both taxa. 5. We conclude that vegetation structure is the primary factor shaping Hemiptera communities and that the various types of grasslands studied are all important habitats for the taxon. Therefore, cattle grazing in its current form is beneficial for the rich Hemiptera fauna in lowland pastures of Hungary. However, in some cases, local and landscape factors and great regional differences may confound the effects of grazing, and this must be considered in conservation planning in the future.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of grazing, vegetation structure and landscape complexity on grassland leafhoppers (Hemiptera: Auchenorrhyncha) and true bugs (Hemiptera: Heteroptera) in Hungary

Kőrösi

Batáry

Orosz

et al. 2011

Insect Conserv Diversity

View full text Add to dashboard Cite

show abstract

“…It has been shown that assemblages of insect communities can vary according to vegetation (e.g. Botha, Siebert, & Van den Berg, ; Stewart & New, ). In addition, it has been shown that, in insectivorous bats, jaw size and muscle strength are considerably more important in smaller than in larger species and, thus, have a significant effect on diet (Ghazali, Moratelli, & Dzeverin, ).…”

Section: Discussionmentioning

confidence: 99%

Spatial and environmental factors predict skull variation and genetic structure in the cosmopolitan bat Tadarida brasiliensis

Morales

De‐la‐Mora

2018

Journal of Biogeography

View full text Add to dashboard Cite

Aim:To assess if geographical and/or environmental factors are driving skull morphology and genetic structure in the cosmopolitan bat species, Tadarida brasiliensis. Location: North, Central and South America, Greater and Lesser Antilles. Methods:We analysed morphometric, genetic and environmental data from the entire distribution of T. brasiliensis. Individuals were genotyped at nine nuclear loci, and clustering analyses were used to detect genetic groups and test correlations between genetic, geographical, and environmental distances. Museum specimens were photographed and 111 two-dimensional landmarks were digitized per individual. Multivariate analyses were applied to explore whether factors such as sex, genetic group, subspecies, biogeographical regions, latitude, longitude and/or environment contribute to the morphometric variation of this species. We also applied a novel approach based on trend surface analyses and model selection to compare models of spatial and environmental dependence and to predict size, shape, and allometry-free variation across the Americas.Results: Genetic and morphometric differences among populations coincide with major biogeographical and climatic breaks in Nearctic, Neotropical and Antillean regions. Trend surface analyses showed that skull size variation can be explained by spatial factors (latitude and longitude), whereas skull shape can be explained by the interaction of spatial and environmental factors. However, allometry-free shape variation might respond to complex interactions not captured by our models. Main conclusion:Our explicit testing of spatial and environmental dependence using geostatistical model selection approaches allowed us to identify extrinsic factors that shape genetic and phenotypic responses in a cosmopolitan bat species. Our findings suggest that skull size is primarily driven by geographical factors (genetic drift), whereas shape variation is driven by adaptive responses to environmental conditions. K E Y W O R D S

show abstract

“…In the course of the literature study for the environmental risk assessment for N. typhlocybae it was noticed that, with just a few exceptions, potential risks of the release of exotic invertebrates for the control of pests have not been routinely assessed in pre-release evaluations, and that screening information on the impact on non-target organisms is required in only a few countries (van Lenteren et al 2006;Stewart et al 2007;Bale 2011). to mitigate the risk associated with the introduction of exotic natural enemies of plant pests in a new geographic region, the threat to the native fauna, in particular, needs to be assessed before a new species is released (Hoddle 2004;Bélanger and Lucas 2011;Maisonhaute and Lucas 2011).…”

Section: Discussionmentioning

confidence: 99%

Environmental risk assessment for Neodryinus typhlocybae, biological control agent against Metcalfa pruinosa, for Austria

Strauss

2013

European Journal of Environmental Sciences

View full text Add to dashboard Cite

The potential environmental risks of Neodryinus typhlocybae, a parasitic wasp from North America, were evaluated with regard to its safe use as an exotic biocontrol agent for the planthopper Metcalfa pruinosa in Austria. Following an earlier host range study of N. typhlocybae conducted in the laboratory, the present study assessed the potential for establishment and spread as well as negative indirect effects on non-target organisms. The potential release sites in Austria were analysed for matching of the climatic requirements for establishment of N. typhlocybae. The two proposed release locations, Vienna and Graz, have a predominantly similar climate to the parasitoid's region of origin, though the comparably cooler mean summer temperatures might result in a low emergence rate of the partial second generation. The natural spread potential of N. typhlocybae was reviewed and is considered to be sufficiently good for released individuals to reach nearby sites infested with M. pruinosa. However, a perceptible spreading of N. typhlocybae females only occurs a few years after release and seems to be strongly dependent on the host density. Gelis areator, a hyperparasitoid of N. typhlocybae known to occur in Austria, might have negative effects on the population of the beneficial organism. Advantages and disadvantages of chemical and biological control methods against M. pruinosa were evaluated. It is concluded that N. typhlocybae is very well suited as a biological control agent for M. pruinosa in Austria, as no adverse effects on non-target species are expected but its release offers advantages with regard to sustainable and environmentally friendly pest management.

show abstract

Insect conservation in temperate biomes: issues, progress and prospects.

Cited by 16 publications

References 0 publications

Effects of grazing, vegetation structure and landscape complexity on grassland leafhoppers (Hemiptera: Auchenorrhyncha) and true bugs (Hemiptera: Heteroptera) in Hungary

Effects of grazing, vegetation structure and landscape complexity on grassland leafhoppers (Hemiptera: Auchenorrhyncha) and true bugs (Hemiptera: Heteroptera) in Hungary

Spatial and environmental factors predict skull variation and genetic structure in the cosmopolitan bat Tadarida brasiliensis

Environmental risk assessment for Neodryinus typhlocybae, biological control agent against Metcalfa pruinosa, for Austria

Contact Info

Product

Resources

About