Collembola of Canada

The state of knowledge of diversity of Collembola in Canada was assessed by examination of literature and DNA barcode data. There are 474 described extant Collembola species known from Canada, a significant change compared to the 520 species estimated to occur in Canada in 1979 (Richards 1979) and the 341 reported in the most recent national checklist (Skidmore 1993). Given the number of indeterminate or cryptic species records, the dearth of sampling in many regions, and the growing use of genetic biodiversity assessment methods such as Barcode Index Numbers, we estimate the total diversity of Collembola in Canada to be approximately 675 species. Advances in Collembola systematics and Canadian research are discussed

Токсикологическая характеристика Максаквина

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Globally invariant metabolism but density-diversity mismatch in springtails.

Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among the most abundant soil arthropods regulating soil fertility and flow of energy through above- and belowground food webs. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains unknown. Here, using a global dataset representing 2470 sites, we estimate the total soil springtail biomass at 27.5 megatons carbon, which is threefold higher than wild terrestrial vertebrates, and record peak densities up to 2 million individuals per square meter in the tundra. Despite a 20-fold biomass difference between the tundra and the tropics, springtail energy use (community metabolism) remains similar across the latitudinal gradient, owing to the changes in temperature with latitude. Neither springtail density nor community metabolism is predicted by local species richness, which is high in the tropics, but comparably high in some temperate forests and even tundra. Changes in springtail activity may emerge from latitudinal gradients in temperature, predation and resource limitation in soil communities. Contrasting relationships of biomass, diversity and activity of springtail communities with temperature suggest that climate warming will alter fundamental soil biodiversity metrics in different directions, potentially restructuring terrestrial food webs and affecting soil functioning

Global fine-resolution data on springtail abundance and community structure

Springtails (Collembola) inhabit soils from the Arctic to the Antarctic and comprise an estimated ~32% of all terrestrial arthropods on Earth. Here, we present a global, spatially-explicit database on springtail communities that includes 249,912 occurrences from 44,999 samples and 2,990 sites. These data are mainly raw sample-level records at the species level collected predominantly from private archives of the authors that were quality-controlled and taxonomically-standardised. Despite covering all continents, most of the sample-level data come from the European continent (82.5% of all samples) and represent four habitats: woodlands (57.4%), grasslands (14.0%), agrosystems (13.7%) and scrublands (9.0%). We included sampling by soil layers, and across seasons and years, representing temporal and spatial within-site variation in springtail communities. We also provided data use and sharing guidelines and R code to facilitate the use of the database by other researchers. This data paper describes a static version of the database at the publication date, but the database will be further expanded to include underrepresented regions and linked with trait data.</p

Agrenia agilis Fjellberg 1986

&lt;p&gt; &lt;i&gt;agilis&lt;/i&gt; Fjellberg, 1986: 101. &lt;i&gt;Agrenia&lt;/i&gt;.&lt;/p&gt; &lt;p&gt;Holotype: 1 (alcohol) Canada. B[ritish] C[olumbia], Garibaldi Park, Black Tusk Meadows, 2.ix.1983, wet moss in brook, 1710 m, A. Fjellberg, 405/83 (CNC 165642, Type No. 21203). Paratypes: 20 (alcohol) and 3 (slide), same collection as holotype (CNC 166155 and 165065, respectively).&lt;/p&gt;Published as part of &lt;i&gt;Stebaeva, Sophya, Lonsdale, Owen &amp; Babenko, Anatoly, 2016, Catalogue of type materials of springtails (Hexapoda, Collembola) in the Canadian National Collection of Insects, Arachnids &amp; Nematodes, pp. 429-437 in Zootaxa 4088 (3)&lt;/i&gt; on page 430, DOI: &lt;a href="http://zenodo.org/record/267103"&gt;10.5281/zenodo.267103&lt;/a&gt

Willemia arida Fjellberg 1991

&lt;p&gt; &lt;i&gt;arida&lt;/i&gt; Fjellberg, 1991: 205. &lt;i&gt;Willemia&lt;/i&gt;.&lt;/p&gt; &lt;p&gt; The original description noted deposition of type material in the CNC, but this material cannot be located. Data for the holotype are as follows: 1 female (slide) Canada. Alberta, Cypress Hills, Reezor Lake, 3.vi.1983, &lt;i&gt;Festuca&lt;/i&gt; -meadow on top of plateau, A. Fjellberg. There are 4 non-type specimens (slide) in the CNC that were listed in the original description from Canada, Alberta: Kananaskis, Fisher Peak, 2460 m, meadow, 26.vi.1983, A. Fjellberg (CNC 330945); and 4 non-type specimens (slide) from U.S.A., Alaska, Toolik Lake, [dry, stony, moraine, &lt;i&gt;Dryas, Potentilla, Carex, Salix, Betula nana&lt;/i&gt;], 19.viii.1976, 43, A. Fjellberg (CNC 330946). All of these specimens were listed in the original description as &ldquo;Additional material&rdquo;.&lt;/p&gt;Published as part of &lt;i&gt;Stebaeva, Sophya, Lonsdale, Owen &amp; Babenko, Anatoly, 2016, Catalogue of type materials of springtails (Hexapoda, Collembola) in the Canadian National Collection of Insects, Arachnids &amp; Nematodes, pp. 429-437 in Zootaxa 4088 (3)&lt;/i&gt; on page 430, DOI: &lt;a href="http://zenodo.org/record/267103"&gt;10.5281/zenodo.267103&lt;/a&gt

Orchesella folsomi Maynard 1933

&lt;p&gt; &lt;i&gt;folsomi&lt;/i&gt; Maynard, 1933 &lt;i&gt;in&lt;/i&gt;: James, 1933: 102. &lt;i&gt;Orchesella&lt;/i&gt;.&lt;/p&gt; &lt;p&gt; Syntypes: 2 (2 slide) [Canada. Ontario], Niagra Glen, 14.xi.1931, [in moss (&lt;i&gt;Polytrichum&lt;/i&gt;) and under the loose bark of old stumps], H.G. James (CNC 165144&ndash; 165145).&lt;/p&gt; &lt;p&gt;Redescription of this species is provided in Maynard (1951: 190).&lt;/p&gt;Published as part of &lt;i&gt;Stebaeva, Sophya, Lonsdale, Owen &amp; Babenko, Anatoly, 2016, Catalogue of type materials of springtails (Hexapoda, Collembola) in the Canadian National Collection of Insects, Arachnids &amp; Nematodes, pp. 429-437 in Zootaxa 4088 (3)&lt;/i&gt; on page 431, DOI: &lt;a href="http://zenodo.org/record/267103"&gt;10.5281/zenodo.267103&lt;/a&gt

Xenylla canadensis Hammer 1953

&lt;p&gt; &lt;i&gt;canadensis&lt;/i&gt; Hammer, 1953: 20. &lt;i&gt;Xenylla&lt;/i&gt;.&lt;/p&gt; &lt;p&gt;Syntypes: 3 (slide) Canada. [Northwest Territories], Yellowknife, 395, [11&ndash;21.vii.] 1948, [in wet yellow-green moss in very shallow depression on rocks], M. Hammer (CNC 165124, Type No.18188).&lt;/p&gt;Published as part of &lt;i&gt;Stebaeva, Sophya, Lonsdale, Owen &amp; Babenko, Anatoly, 2016, Catalogue of type materials of springtails (Hexapoda, Collembola) in the Canadian National Collection of Insects, Arachnids &amp; Nematodes, pp. 429-437 in Zootaxa 4088 (3)&lt;/i&gt; on page 430, DOI: &lt;a href="http://zenodo.org/record/267103"&gt;10.5281/zenodo.267103&lt;/a&gt