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Open AccessArticle

Spatio-Temporal Distribution of Carabids Influenced by Small-Scale Admixture of Oak Trees in Pine Stands

Department of Forest Sciences, Faculty of Environmental Sciences, Institute of Silviculture and Forest Protection, TU Dresden, 01737 Tharandt, Germany
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Diversity 2020, 12(10), 398; https://doi.org/10.3390/d12100398
Received: 10 August 2020 / Revised: 26 September 2020 / Accepted: 14 October 2020 / Published: 15 October 2020
(This article belongs to the Special Issue Interactions between Oaks and Insects)
In a region with poor soil fertility, low annual precipitation and large areas of homogenous Pinus sylvestris L. forests, conservation of old sessile oak (Quercus petraea (Matt.) Liebl.) trees is one option to enrich structure and species richness. We studied the affinities of Carabus coriaceus, C. violaceus, C. hortensis and C. arvensis for specific tree species and the resultant intra- and interspecific interactions. We focused on their temporal and spatial distributions. Pitfall traps were used as a surface-related capture method on a grid over an area of three hectares. Generalised linear models and generalised linear geostatistical models were used to analyse carabid activity densities related to distance-dependent spatial effects corresponding to tree zones (oak, oak–pine, pine). The results demonstrated significant spatial affinities among these carabids, especially for females and during the period of highest activity. Individuals of C. coriaceus showed a tendency to the oak zone and C. hortensis exhibited a significant affinity to the oak–pine mixture. Imagines of C. arvensis and C. violaceus were more closely related to pine. The observed temporal and spatial coexistence of the different Carabus species reveals that single admixed old oak trees can support greater diversity within pine-dominated forests. View Full-Text
Keywords: Carabus species; sessile oak; structural element; climate conditions; intra- and interspecific interactions; coexistence; spatio-temporal distribution; geostatistical models Carabus species; sessile oak; structural element; climate conditions; intra- and interspecific interactions; coexistence; spatio-temporal distribution; geostatistical models
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Wehnert, A.; Wagner, S.; Huth, F. Spatio-Temporal Distribution of Carabids Influenced by Small-Scale Admixture of Oak Trees in Pine Stands. Diversity 2020, 12, 398.

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