Spider assemblages across elevational and latitudinal gradients in the Yukon Territory, Canada. LIFE HISTORY OF PARDOSA MOESTA AND PARDOSA MACKENZIANA (ARANEAE, LYCOSIDAE) IN CENTRAL ALBERTA, CANADA Journal of Arachnology, 28 (3), 319-328 DOI: 10.1636/0161-8202(2000)0282.0.CO 2īowden, J. Determinants of Ground-Dwelling Spider Assemblages at a Regional Scale in the Yukon Territory, Canada Ecoscience, 17 (3), 287-297 DOI: 10.2980/17-3-3308īuddle, C. Life history of tundra-dwelling wolf spiders (Araneae: Lycosidae) from the Yukon Territory, Canada Canadian Journal of Zoology, 90 (6), 714-721 DOI: 10.1139/z2012-038īowden, J., & Buddle, C. You will see that this post is titled Part 1: some more work will hopefully be published soon – stay tuned for Part 2…īowden, J., & Buddle, C. As the Arctic warms, research shows wolf. In the Arctic, wolf spiderswhich, in terms of pure biomass, outweigh the region’s gray wolves by a ratio of at least 80-to-1typically hunt springtails, primitive wingless insects that. Life-history studies are the cornerstone of biology, and I’m thrilled that Joseph recognized that fact and did this research on Arctic wolf spiders. Wolf spiders may play a role decreasing decomposition rates in a warming climate. It’s pretty difficult to progress in ecology without a deep understanding of a species’ biology and life-history. The methods are straightforward, but the findings are significant. egg sacs of wolf spiders (Edgar 1971 Cobb & Cobb 2004) with the. In sum, this paper by Joseph is about studying some good old-fashioned natural history of a fascinating group of animals. Arctic wolf spider species: Par dosa sodalis Holm 1970, Par dosa lapponica (Thorell. There are a LOT of Arachnids living on the tundra! ![]() With confidence, this estimate of 4000 spiders per hectare represents a minimum. Don’t forget – wolf spiders are only part of the Arachno-fauna in the Arctic. Some simple calculations will tell you just how common wolf spiders are on the Tundra: 4000 wolf spiders per hectare. Results? Well… the most common species Pardosa lapponica averaged about 0.4 spiders per square metre. ![]() This protocol was adapted from Buddle (2000). The ring was haphazardly and firmly placed on the tundra surface in each site and all wolf spiders collected inside the ring were identified and counted. The Arctic Wolf (Canis lupus arctos) is a large North American canine featured in the Arctic Pack DLC for Planet Zoo. Here’s the text of the CJZ paper that describes the methods (straightforward but time consuming):ĭensities of the three focal species were estimated using a ring of hard plastic measuring 1.13 m in diameter (1 m x 1 m area) and about 12 cm high. Joseph also calculated tundra wolf spider densities. The offspring in the first clutch will depend on the size of the female wolf spider, but the second clutch size does not depend on the body size of its parent.An Arctic Pardosa (Lycosidae) female, with egg sac Research suggests that when earlier snowmelt occurs in higher arctic site, Pardosa glacialis produces its first clutch earlier and its second clutch generally occurs later in the summer. Scientists have known for almost a decade that climate change would impact spider populations. This species is cannibalistic, and as adults grow they will devour spiderlings as prey, keeping the population in check. Larger adult females may increase spider populations as larger females produce larger and greater numbers of offspring. Ī 10-year study of the Arctic wolf spider revealed that the exoskeleton thickness averaged 0.104 inch (2.65 millimeters), a 2 percent increase over the 0.102 inch (2.6 millimeters) commonly found in the early years of the study, possibly the result of longer summers. The Arctic wolf spider can live for at least two years, grows as long as 1.6 inches (4 centimeters), and is a carnivore. 2017) and are present at high densities in many habitats (Bowden and Buddle 2012 Høye et al. ![]() The Arctic wolf spider ( Pardosa glacialis) is a type of wolf spider in the genus Pardosa, with a holarctic distribution and endemic to the Arctic, particularly Greenland. In Arctic ecosystems, wolf spiders are dominant top predators in the food web (Høye and Hammel 2010 Schmidt et al.
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