Species composition and biotopic distribution of leaf beetles (Coleoptera: Megalopodidae, Chrysomelidae) in the Sikhote-Alin State Nature Reserve (Russia)

Egorov

2021

Diversity

Studies on the vertical distribution of arthropods in temperate forests have revealed the uneven vertical distribution of communities. Many factors influence these patterns simultaneously. However, there are still many questions related to the vertical distribution of Coleoptera in deciduous forests of the temperate zone. The research was carried out within the territory of the Republic of Mordovia (the center of the European part of Russia). Fermental traps with a bait made of fermenting beer with sugar were used to collect Coleoptera. The collections were carried out from May to September 2020 at five sites in a deciduous forest. We set traps at a height of 1.5, 3.5, 7.5 and 12 m above the ground) on the branches of trees. Ninety-two species were identified at the end of studies at different heights. The families Nitidulidae (15 species), Cerambycidae (14 species), Elateridae (7 species), Curculionidae (7 species) and Scarabaeidae (7 species) had the greatest species diversity. The greatest species diversity was recorded at a height of 1.5 m, while the smallest one was recorded at a height of 7.5 m. The minimum number of specimens was recorded at a height of 12 m. The largest differences in the Jaccard similarity index were obtained between samples from a height of 1.5 and 12 m. The Shannon’s diversity index was higher near the ground than in the tree crowns (at heights of 7.5 and 12 m), and the Simpson index had the opposite tendency. Glischrochilus hortensis and to a lesser extent Cychramus luteus preferred to live in the lowest layers of deciduous forest (1.5 m). Cryptarcha strigata was mainly found with relatively high numbers at heights of 3.5 m and 7.5 m. The abundance and occurrence of Protaetia marmorata and Quedius dilatatus were higher in the uppermost layers of the crowns. The number of saproxylic beetle species at heights of 3.5–12 m was almost the same, while in the surface layer it decreased. The number of anthophilic beetle species was also lower at a low altitude. Our data confirm the relevance of sampling in forest ecosystems at different altitudes while studying arthropod biodiversity.

Section: Introductionmentioning

confidence: 99%

Vertical Stratification of Beetles in Deciduous Forest Communities in the Centre of European Russia

Egorov

2021

Diversity

“…The biodiversity of protected areas is usually significantly higher than in surroundings (Schulman et al 2007;Cantú-Salazar and Gaston 2010;Françoso et al 2015;Egorov et al 2020;Mohd-Azlan et al 2020;Polevoi 2021). The varying conservation status of landscapes, the time since formation of protected areas (their age), the ecosystem uniqueness, the absence of anthropogenic impacts and other factors are also important (Williams et al 2011;Tantipisanuh et al 2016;Dorji et al 2019;Ahissa et al 2020;Khapugin 2020;Sergeev 2020;Shinkarenko et al 2021). Unfortunately, in many cases, insect diversity in protected areas is less well studied than that of other groups insect diversity in protected areas is less studied than that of other groups (Vertebrata).…”

Section: Discussionmentioning

confidence: 99%

Sawfly Fauna (Hymenoptera: Symphyta) in the Mordovia State Nature Reserve (Central Russia)

Vikberg²,

Lengesova

et al. 2022

TRAVAUX

Protected areas are biodiversity hotspots of the world. Knowledge of their overall biodiversity is essential for nature conservation. Sawflies are an integral part of terrestrial ecosystems; being phytophages, they play a significant role in the processing of primary production. The aim of the research was to study the biodiversity of sawflies in the Mordovian Reserve. The research was carried out in 2008, 2009 and 2012-2019 on the territory of the Mordovia State Nature Reserve (Republic of Mordovia, Central part of European Russia). The article provides information on records of 169 species of sawflies of 9 families in the Mordovia State Nature Reserve. The annotated list includes 103 new species for the reserve, of which 1 species (Dineura parcivalvis) is listed for the European part of Russia for the first time, and 3 species are specified for the first time for the Central part of European Russia (Arge beckeri, Rhogogaster genistae, Tenthredo amurica).

“…Among beetles, some species prefer forests of various types and can be found in these closed biotopes [10][11][12]. However, there are also species that prefer open biotopes [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Vertical Stratification and Seasonal Dynamics of Coleoptera in Open Biotopes of Forest Ecosystems (Centre of European Russia)

Egorov

2022

Forests

There are few studies on the vertical distribution and seasonal activity of arthropods in open habitats (in glades) in temperate forests due to methodological problems associated with the arrangement of certain structures for trapping. However, glades in forests are places of significant biodiversity of native animals, which are attracted to such areas by the possibilities of nutrition, reproduction, and wintering. The research was carried out on the territory of the Republic of Mordovia (the center of the European part of Russia). Fermental traps (bait—fermenting beer with sugar) were used to collect Coleoptera. They were installed on a special structure at heights of 2, 4, 6, 8, and 10 m. The collections were carried out from May to October 2020 in a glade with an area of 0.93 hectares in a deciduous forest. At the end of the research, 745 specimens of 80 species were registered from 30 Coleoptera families. The greatest species diversity was recorded in Nitidulidae (11 species), Cerambycidae (10 species), Scarabaeidae (7 species), Elateridae, Coccinellidae, and Curculionidae (5 species each). The greatest species diversity (53 species) and numerical abundance were obtained at a height of 2 m, and the smallest one (16 species) at a height of 10 m. The largest differences in the Jaccard similarity index were obtained between samples from a height of 2 and 10 m. The maximum values of the Shannon index and the minimum values of the Simpson index were recorded at the height of 2 m. The most significant relative number of saproxylic species was obtained at a height of 4 m. The relative number of anthophilic species was minimal at a height of 10 m. The seasonal dynamics of Coleoptera abundance were the same at different heights and the highest abundance was observed in late May and early June. However, the seasonal dynamics were different for some Coleoptera species in the glade located and inside the forest. Our data confirm the relevance of sampling in open biotopes at different heights in the study of arthropod biodiversity.