Untitled

Grandchamp, Anne-Catherine; Niemelä, Jari; Kotze, Johan

doi:10.1023/a:1015707916116

Cited by 42 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various interacting mechanisms can be responsible for differences in community structure between landscapes, ranging from light pollution in the city compared to other landscapes to differences in chemical pollution and pesticide types (insecticides and other pesticides in agricultural landscapes vs. heavy metals in the city [Halfwerk & Slabbekoorn, 2015; Botías et al., 2017; Forister et al., 2019; Eggleton, 2020]). In addition, a more constant heat‐island effect in the city versus variable temperatures in other landscapes (Lövei & Magura, 2022; Manoli et al., 2019) and higher soil compaction and human use in urban forests (but also on lake islands during the summer) compared to forest patches in other landscapes (Grandchamp et al., 2000; Hamberg et al., 2008; Kotze et al., 2012) likely play a role. Control forests were utmost similar in their carabid assembly, and different from forest patches in the other landscapes, primarily because of their low species richness, and their dominance of generalist (64% of the number of individuals) and forest‐associated individuals (36%) with no open‐habitat species collected.…”

Section: Discussionmentioning

confidence: 99%

Matrix type affects carabid beetle community and trait composition, and intraspecific variation in remnant forests

Kotze,

Gabor,

Kohout

et al. 2023

Journal of Biogeography

View full text Add to dashboard Cite

AimThe Anthropocene is characterised by urban and agricultural landscapes. Within these landscapes, natural to semi‐natural habitats are fragmented, isolated and disturbed to varying degrees. Species associated with these natural habitats have to content with the surrounding landscape, both in terms of level of isolation, and matrix type and quality. We investigated the community structure, trait distribution and individual traits of carabid beetles in boreal forest fragments within three matrices: urban, agricultural and freshwater lake.LocationCity of Lahti and its surroundings, southern Finland.TaxonColeoptera, Carabidae.MethodsUsing pitfall traps from June to October 2019, we collected carabid beetles from eight spruce‐dominated forest fragments in the urban matrix, 10 fragments in an agricultural matrix, seven fragments on lake islands and three large control forests at the outskirts of the city.ResultsCompared to natural forests, carabid beetles in forest fragments in these matrices showed distinct assemblages, and with beetle diversity the highest in fragments in the agricultural landscape. Fragments in the urban and lake island landscapes were characterised by small‐sized species, and those capable of flight. We also found strong intraspecific trait responses in terms of body size, with some generalist species being significantly smaller in urban, agricultural or lake island fragments compared to the controls.Main ConclusionsThe matrix has a clear effect on carabid beetle communities, both in terms of taxonomic and trait distribution, and filters for communities of smaller sized species and those capable of flight. Such overall community and intraspecific effects can have considerable effects on populations and community assemblages: As anthropogenic effects intensify in urban and agricultural landscapes, our findings may be the expression of further morphological and physiological responses, and eventually in the adaptation of those species that can cope with the Anthropocene.

show abstract

Section: Discussionmentioning

confidence: 99%

Matrix type affects carabid beetle community and trait composition, and intraspecific variation in remnant forests

Kotze,

Gabor,

Kohout

et al. 2023

Journal of Biogeography

View full text Add to dashboard Cite

show abstract

“…We therefore recommend handnetting in addition to the canopy Malaise and blue-vane trapping method in future OSFL studies. Repeated ground surveys can disturb boreal forest understory vegetation, which is sensitive to trampling, and thereby alter the composition of vegetation and ground-dwelling arthropod communities (Grandchamp et al 2000, Lehvävirta et al 2006, Hamberg et al 2010, Kotz et al 2012. However, net surveys could be designed to minimize impact, similar to bird nest search and monitoring protocols that require multiple visits (e.g., Geupel 1993, Martin et al 1997).…”

Section: Additional Techniques and Modificationsmentioning

confidence: 99%

An efficient method for sampling aerial arthropods at nest sites of an insectivorous songbird in steep decline

Haberski¹,

Hagelin²,

Barger³

et al. 2021

ACE

View full text Add to dashboard Cite

The decline of aerial insectivorous birds has been hypothesized to stem, in part, from a decline in aerial arthropod prey, underscoring the need for long-term monitoring of both bird and arthropod populations. However, trapping arthropods can be time consuming and efficient methods are required. Our primary goal was to identify the optimal combination of insect traps to collect taxonomic orders of prey in the diet of a songbird in steep decline, the Olive-sided Flycatcher (Contopus cooperi). Our secondary goal was to sample the arthropod community as broadly as possible, and thereby monitor for general changes in arthropod assemblages, which may affect multiple species of migratory insectivores. In the boreal forest of central Alaska, we compared captures of canopy Malaise traps and three types of near-ground pollinator traps (blue vane traps, yellow vane traps, and chemically baited wasp traps) at 22 breeding territories where adult flycatchers actively foraged and bred. Combined, traps collected 11,193 specimens from 12 arthropod orders, of which moths (Lepidoptera, 36%), flies (Diptera, 34%), and wasps (Hymenoptera, 18%) were the most abundant, and also known components of flycatcher diets. General linear mixed models determined that canopy Malaise traps collected the greatest overall ordinal richness (11 orders) with a significantly greater abundance of specimens from six orders, two of which are aquatic specialists linked to breeding success of Tree Swallows (Tachycineta bicolor), another declining aerial insectivore. The three types of near-ground pollinator traps overlapped in taxa collected, but blue vane traps captured the most flies, bees, and yellowjackets, all of which were not well represented in Malaise samples. All trap types failed to collect dragonflies (Odonata), a known prey item of breeding Olive-sided Flycatchers. We therefore conclude that a combination of canopy Malaise traps and blue vane traps, plus handnetting of dragonflies, is an efficient combination for quantifying prey abundance on Olive-sided Flycatcher territories, while simultaneously monitoring the broadest possible number of arthropod orders near flycatcher nests within the boreal forest.Une méthode efficace d'échantillonnage des arthropodes aériens sur les sites de nidification d'un passereau insectivore en forte baisse RÉSUMÉ. On pense que la baisse des oiseaux insectivores aériens a peut-être découlé, en partie, d'une diminution des arthropodes aériens, soulignant le besoin d'avoir un suivi à long terme des populations d'oiseaux et d'arthropodes mis en place. Cependant, le piégeage des arthropodes peut prendre beaucoup de temps et des méthodes efficaces pour ce faire sont nécessaires. L'objectif principal de notre étude était de déterminer la combinaison optimale de pièges à insectes permettant de collecter les ordres taxonomiques de proies dans le régime alimentaire d'un passereau en forte baisse, le Moucherolle à côtés olive (Contopus cooperi). Notre objectif secondaire était d'échantillonner la communauté d'arthropodes au...

show abstract

“…There is a large effect of pollution from neighbouring roads and houses (Pickett et al, 2001). Many people visit these forests, disturbing vulnerable species (Grandchamp et al, 2000). In addition, forest management of urban forests differs from that in rural forests because dead trees and branches are often removed from urban forests for aesthetic and safety reasons (Tyrväinen et al, 2003), affecting endangered species that inhabit these dead wood microhabitats (Speight, 1989).…”

Section: Introduction Uvodmentioning

confidence: 99%

Hoverflies (Diptera: Syrphidae) as biodiversity indicators for assessing urban forest habitats

Groot¹,

Simončič²,

Verlič³

et al. 2022

Acta Silvae et Ligni

View full text Add to dashboard Cite

Urban and peri-urban forests are important habitats for maintaining biodiversity in cities. In this paper, we report a method for using hoverflies as biodiversity indicators in urban forest habitats. As a case study, forest habitats in three peri-urban and urban forests were assessed and compared to rural forests in Slovenia. Rožnik (Ljubljana) was chosen as the urban forest site, Mestni log (Ljubljana) and Brdo (Kranj) were chosen as the peri-urban sites, and eight sites were chosen in rural forests in different ecoregions in Slovenia. Forest hoverfly species richness and the species composition of different biological traits were compared between the peri-urban forests, urban forest and rural forest sites. In addition, species richness was assessed for changes in response to weather conditions between years. The number of species with the investigated traits in the urban and peri-urban forests was within the range of the number of species observed in the rural forests. The number of saproxylic species was higher in the urban forest but lower in the peri-urban forests compared to the rural forests. The proportions of species with different feeding modes and different development times were similar between the peri-urban, urban and rural forests. The proportions of species with development times of less than 2 months or more than 1 year and of predatory species were similar in the urban and peri-urban forests but higher in the rural forests. The species composition of the other biological traits differed between the peri-urban, urban and rural forests. Species richness and abundance displayed large differences in phenological patterns between 2012 and 2013; these differences are related to differences in the minimum temperature for these years. The results are discussed in relation to forest management in urban forests, the usefulness of hoverflies as a biodiversity indicator and possible extrapolation to other species groups.

show abstract

Untitled

Cited by 42 publications

References 19 publications

Matrix type affects carabid beetle community and trait composition, and intraspecific variation in remnant forests

Matrix type affects carabid beetle community and trait composition, and intraspecific variation in remnant forests

An efficient method for sampling aerial arthropods at nest sites of an insectivorous songbird in steep decline

Hoverflies (Diptera: Syrphidae) as biodiversity indicators for assessing urban forest habitats

Contact Info

Product

Resources

About