Landscape structure affects activity density, body size and fecundity of Pardosa wolf spiders (Araneae: Lycosidae) in winter oilseed rape

Drapela, Thomas; Frank, Thomas; Heer, Xaver; Moser, Dietmar; Zaller, Johann G.

doi:10.14411/eje.2011.079

Cited by 22 publications

(12 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of grassy linear habitats on natural enemies within adjacent fields is still poorly understood. Some studies report no effect for a range of natural enemies or for Araneae and Carabidae, while other studies report enhanced densities of Carabidae, Lycosidae, Tachinidae and various natural enemies in the adjacent crop. For beetle banks, a brief wave of emigration of generalist predators from the banks into the arable field was detected in April or May, followed by a period in which there was a homogeneous distribution of boundary‐overwintering predators across the field .…”

Section: Resultsmentioning

confidence: 99%

Structure, function and management of semi‐natural habitats for conservation biological control: a review of European studies

Holland

Bianchi

Entling

et al. 2016

Pest Management Science

248

158

View full text Add to dashboard Cite

Different semi-natural habitats occur on farmland, and it is the vegetation's traits and structure that subsequently determine their ability to support natural enemies and their associated contribution to conservation biocontrol. New habitats can be created and existing ones improved with agri-environment scheme funding in all EU member states. Understanding the contribution of each habitat type can aid the development of conservation control strategies. Here we review the extent to which the predominant habitat types in Europe support natural enemies, whether this results in enhanced natural enemy densities in the adjacent crop and whether this leads to reduced pest densities. Considerable variation exists in the available information for the different habitat types and trophic levels. Natural enemies within each habitat were the most studied, with less information on whether they were enhanced in adjacent fields, while their impact on pests was rarely investigated. Most information was available for woody and herbaceous linear habitats, yet not for woodland which can be the most common semi-natural habitat in many regions. While the management and design of habitats offer potential to stimulate conservation biocontrol, we also identified knowledge gaps. A better understanding of the relationship between resource availability and arthropod communities across habitat types, the spatiotemporal distribution of resources in the landscape and interactions with other factors that play a role in pest regulation could contribute to an informed management of semi-natural habitats for biocontrol. © 2016 Society of Chemical Industry.

show abstract

Section: Resultsmentioning

confidence: 99%

Structure, function and management of semi‐natural habitats for conservation biological control: a review of European studies

Holland

Bianchi

Entling

et al. 2016

Pest Management Science

248

158

View full text Add to dashboard Cite

show abstract

“…Only adult spiders were included in the analysis of species dominance. Species that represented more than 5% of the assemblage were defined as dominant, whereas species with a contribution of higher than 30% were defined as superdominant (Górny and Grüm, 1981).The epigeic activity pattern and species diversity were assessed based on the species abundance obtained from pitfall traps and were treated as activity densities (Drapela et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Spider assemblages and dynamics on a seasonal island in the Pripyat River, Belarus

Hajdamowicz¹,

Pilacka²,

Meissner³

2015

Turk J Zool

View full text Add to dashboard Cite

Spider assemblages on a seasonal river meadow island were studied in spring 2006 and 2007. Samples were collected with a set of 20-30 pitfall traps once every 5 days. Altogether, 1179 spiders belonging to 30 species were collected. There were 5 constant dominant species: medium-sized wandering Pardosa prativaga, and small-sized air colonizers Oedothorax retusus, Erigone dentipalpis, Oedothorax fuscus, and Pachygnatha degeeri. The relatively low species diversity was higher in 2007 and grew throughout the season with the lowering of the water level. The total turnover of species involved the least abundant species (below 1% of the total), mainly Linyphiidae. Abundance of small-sized species was negatively correlated with abundance of medium-sized species. The activity density of small-sized species was higher at the beginning of the spring season with O. retusus being especially dependent on the high water level, while the number of medium-sized species and P. prativaga were correlated with the water lowering. The assemblages of ground-dwelling spiders were exposed to seasonal and annual changes, but due to the proximity of refugia and rapid colonization, not all assemblages were affected. Spider dynamics on the seasonal island reflected a general activity pattern where, over time, small-sized species avoided larger predators, which were additionally stopped by high water levels.

show abstract

“…Landscape heterogeneity was calculated as the proportion of semi-natural habitats (hedges, tree rows, grass stripes, natural grassland, pasture, fallow, heathland, wetland and woodlots) within a radius of 750 m centered in the plot. This area is within the activity ranges of both spiders [17,49] and springtails [46] in agricultural landscapes. In eight of the study vineyards, the inter-rows had a permanent green cover (PGC) whereas in eight vineyards every second inter-row was periodically mechanically disturbed (PMD).…”

Section: Site Description and Study Designmentioning

confidence: 92%

Contrasting Effects of Tillage and Landscape Structure on Spiders and Springtails in Vineyards

et al. 2019

View full text Add to dashboard Cite

Interactions between predatory species and their potential prey are little studied in vineyards, especially considering the surrounding landscape structure. We examined the effects of soil tillage intensities in vineyard inter-rows on the activity density and diversity of spiders (Araneae) and springtails (Collembola), their potential preys, and assessed whether these effects are altered by non-crop elements in the surrounding landscape. We collected data in 16 vineyards in Austria; eight were periodically mechanically disturbed (PMD), eight had permanent green cover (PGC). The study vineyards were embedded in landscapes ranging from structurally simple to complex. Both, spiders and springtails were collected with pitfall traps. Data analyses using generalized linear mixed models (GLMM) showed different effects of soil tillage intensities on spiders and springtails and an interaction with semi-natural elements (SNEs) in the surrounding landscape. Activities of springtails were higher under PMD than under PGC while spider activity density remained unaffected. Spider family Shannon diversity was lower under PMD than under PGC, while springtail species Shannon diversity was unaffected by tillage. Under PMD, spider activity and family diversity decreased with increasing SNEs in the surroundings indicating spider emigration away from vineyards. Under PGC, spider activity density increased with increasing SNE proportions in the surroundings when springtail activity density was high. Our findings suggest that recommendations on sustainable vineyard management should include both site and landscape factors.

show abstract

Landscape structure affects activity density, body size and fecundity of Pardosa wolf spiders (Araneae: Lycosidae) in winter oilseed rape

Cited by 22 publications

References 52 publications

Structure, function and management of semi‐natural habitats for conservation biological control: a review of European studies

Structure, function and management of semi‐natural habitats for conservation biological control: a review of European studies

Spider assemblages and dynamics on a seasonal island in the Pripyat River, Belarus

Contrasting Effects of Tillage and Landscape Structure on Spiders and Springtails in Vineyards

Contact Info

Product

Resources

About