Habitat moisture availability and the local distribution of the Antarctic Collembola Cryptopygus antarcticus and Friesea grisea

Hayward, Susan

doi:10.1016/s0038-0717(04)00057-4

Cited by 9 publications

(14 citation statements)

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“…This suggests that either there was appreciable production of new individuals in these cores or else individuals migrated into these cores. Cryptopygus antarcticus is a relatively mobile springtail; its furcula or jumping organ allows it to actively search for more favorable moisture and temperature regimes (Hayward et al , 2004) and its high mobility and dispersal rate make it an efficient colonizer of new areas (Block, 1997). While it is desiccation sensitive, it is able to actively disperse across unfavorable interpatch zones (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…While it is desiccation sensitive, it is able to actively disperse across unfavorable interpatch zones (e.g. bare rock) in search of more favorable conditions (Hayward et al , 2004). The abundance of C. antarcticus was not lower in other treatments in the second growing season, suggesting that individuals migrated to warmed cores that received supplemental precipitation from the area surrounding our plots.…”

Section: Discussionmentioning

confidence: 99%

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Response of plants and the dominant microarthropod,Cryptopygus antarcticus, to warming and contrasting precipitation regimes in Antarctic tundra

Day

Ruhland

Strauss

et al. 2009

Global Change Biology

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We examined the influence of warming and supplemental precipitation on plant production and abundance of the dominant microarthropod, the springtail Cryptopygus antarcticus (Collembola), in tundra dominated by the vascular plants Colobanthus quitensis and Deschampsia antarctica along the Antarctic Peninsula. Tundra cores were placed in plots near Palmer Station where they were warmed with infrared heaters in combination with receiving supplemental precipitation. Diel canopy air and soil temperatures and air vapor pressure deficits in warmed plots were elevated 0.8 1C, 2.2 1C and 0.13 kPa, respectively. After two growing seasons, total aboveground plant production was greater under warming as a result of enhanced production by C. quitensis, which more than offset declines in moss biomass. Total aboveground plant production was also greater under supplemental precipitation primarily as a result of enhanced moss production. Total aboveground plant production was greatest under the combination of warming and supplemental precipitation, primarily as a result of enhanced C. quitensis production. C. antarcticus were more abundant in cores receiving supplemental precipitation and there was a strong treatment interaction; these springtails were most abundant in warmed cores receiving supplemental precipitation. Over 50% of the variability in the abundance of C. antarcticus could be explained by differences in aboveground plant biomass. However, plant production did not appear directly responsible for differences in C. antarcticus abundance; when we examined C. antarcticus abundance per unit of aboveground plant biomass, differences in its abundance among treatments were still apparent implying these differences were not the direct result of plant biomass. The responses of C. antarcticus were consistent with its known moisture and thermal preferences, suggesting that abiotic factors played a dominant role in controlling its abundance. Precipitation regime had large impacts on warming responses and these were species specific, illustrating the importance of future precipitation regimes in predicting system responses to warming.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Response of plants and the dominant microarthropod,Cryptopygus antarcticus, to warming and contrasting precipitation regimes in Antarctic tundra

Day

Ruhland

Strauss

et al. 2009

Global Change Biology

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“…These humidity preferences were substantiated by experiments on field and acclimated (to 11°C) individuals: the springtail selecting 100% RH in the temperature range 0–3°C and the mite having no RH preference in the temperature range 0–6°C (Hayward et al , 2003). Comparison of the effects of habitat moisture conditions on the distribution of C. antarcticus and Friesea grisea , another Antarctic collembolan, showed clearly different hygropreferences, which were reflected in their activity over the temperature range 10–20°C (Hayward et al , in press). The former species was restricted to microhabitats with high moisture contents, while F. griesea dominated in dry rocky sites at Rothera Point, Adelaide Island on the Antarctic Peninsula.…”

Section: Discussionmentioning

confidence: 99%

Soil arthropods as indicators of water stress in Antarctic terrestrial habitats?

Convey

Block

Peat

2003

Global Change Biology

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Abiotic features of Antarctic terrestrial habitats, particularly low temperatures and limited availability of liquid water, strongly influence the ecophysiology and life histories of resident biota. However, while temperature regimes of a range of land microhabitats are reasonably well characterized, much less is known of patterns of soil water stress, as current technology does not allow measurement at the required scale. An alternative approach is to use the water status of individual organisms as a proxy for habitat water status and to sample over several years from a population to identify seasonal or long‐term patterns. This broad generalization for terrestrial invertebrates was tested on arthropods in the maritime Antarctic. We present analyses of a long‐term data set of body water content generated by monthly sampling for 8–11 years of seven species of soil arthropods (four species of Acari, two Collembola and one Diptera) on maritime Antarctic Signy Island, South Orkney Islands. In all species, there was considerable within‐ and between‐sample variability. Despite this, clear seasonal patterns were present in five species, particularly the two collembolans and a prostigmatid mite. Analyses of monthly water content trends across the entire study period identified several statistically significant trends of either increase or decrease in body water content, which we interpret in the context of regional climate change. The data further support the separation of the species into two groups as follows: firstly, the soft‐bodied Collembola and Prostigmata, with limited cuticular sclerotization, which are sensitive to changes in soil moisture and are potentially rapid sensors of microhabitat water status, secondly, more heavily sclerotized forms such as Cryptostigmata (=Oribatida) and Mesostigmata mites, which are much less sensitive and responsive to short‐term fluctuations in soil water availability. The significance of these findings is discussed and it is concluded that annual cycles of water content were driven by temperature, mediated via radiation and precipitation, and constituted reliable indicators of habitat moisture regimes. However, detailed ecophysiological studies are required on particular species before such information can be used to predict over long timescales.

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“…Based on its morphology and distribution, C. nanjiensis is synonymized with C. antarcticus here as suggested earlier (P. Greenslade, personal communication quoted in ). This species is probably the most abundant and widespread species on in the maritime Antarctic region and consequently the most studied and numerous papers have been published on its habitat, reproduction and feeding behaviours and cold temperature adaptation (Haward et al 2004, Bokhorst et al 2007, Schulte et al 2008, Benoit et al 2009, Day et al 2009 and its complete mitochondrial genome has been described (Carapelli et al 2008). Although Shao et al (2000) stated that they sequenced mitochondrial DNA cytochrome oxidase II of this species (the use of the name C. nanjiensis in their paper was invalid), on reanalysis of the sequence, we found the data appeared anomalous.…”

Section: Cryptopygus Antarcticus Antarcticusmentioning

confidence: 99%

Collembola fauna of the South Shetland Islands revisited

Greenslade

2010

Antarctic Science

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A review of the collembolan fauna of the South Shetland Islands is presented. Cryptopygus nanjiensis Yue & Tamura is synonymized with C. antarcticus Willem. A record of Tullbergia mediantarctica Wise from King George Island is considered a misidentification of Tullbergia mixta Wahlgren and Tillieria penai Weiner & Najt, described from the same island, is synonymized with T. mixta. The current fauna stands at eleven species, of which at least three are introduced. A checklist of Collembola currently considered to occur in the South Shetland Islands is supplied with distributional data.

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Habitat moisture availability and the local distribution of the Antarctic Collembola Cryptopygus antarcticus and Friesea grisea

Cited by 9 publications

References 0 publications

Response of plants and the dominant microarthropod,Cryptopygus antarcticus, to warming and contrasting precipitation regimes in Antarctic tundra

Response of plants and the dominant microarthropod,Cryptopygus antarcticus, to warming and contrasting precipitation regimes in Antarctic tundra

Soil arthropods as indicators of water stress in Antarctic terrestrial habitats?

Collembola fauna of the South Shetland Islands revisited

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