Effects of altered precipitation and wolf spiders on the density and activity of forest-floor Collembola

Shultz, Benjamin J.; Lensing, Janet R.; Wise, David H.

doi:10.1016/j.pedobi.2005.10.001

Cited by 19 publications

(10 citation statements)

References 30 publications

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“…The influence of Collembola on nutrient cycling changes with their population density (Hanlon and Anderson 1979;Ineson et al 1982;Teuben 1991). In field manipulation experiments, Lindberg et al (2002) and Shultz et al (2006) observed that high rainfall increased the populations of Collembola. Many Collembola species are parthenogenetic (Lavelle and Spain 2001), so any acceleration of growth rate has a strong influence on population growth.…”

Section: Introductionmentioning

confidence: 99%

Influence of Collembola on nitrogen mineralization varies with soil moisture content

Kaneda

Kaneko

2011

Soil Science and Plant Nutrition

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Changes in soil moisture determine the reproductive, respiratory, and metabolic activities of soil microorganisms and hence the rate of microbial nitrogen (N) mineralization. Soil moisture also affects the feeding activity and movement of soil invertebrates. Bacterial and fungal grazing by soil invertebrates such as Collembola and nematodes is known to increase N mineralization by increasing the reproductive, respiratory, and metabolic activities of microorganisms. Therefore, to assess the effect of soil moisture on N mineralization, faunal responses need to be considered. We used microcosms to investigate the effect of soil moisture on N mineralization mediated by a species of Collembola, Folsomia candida Willem. We used four moisture levels corresponding to matric potentials of À42.5, À11.8, À0.8, and À0.5 kPa and investigated the effects of these on Collembola with respect to feeding activity, growth, and contribution to N mineralization. The microbial biomass and ratio of bacterial to fungal biomass tended to increase with increasing soil moisture. Collembola feeding activity and growth increased with increasing soil moisture conditions. Collembola significantly enhanced N mineralization in soil at water potentials of À11.8 and À0.5 kPa. The greatest relative increase in N mineralization attributed to Collembola occurred in the À11.8 kPa treatment. The change in contribution of the Collembola to N mineralization with soil moisture was most likely induced by changes in Collembola feeding activity and microbial community structure. The growth in body length of the Collembola was significantly greater at higher moisture conditions than at the lowest moisture condition, indicating that increases in both metabolic activity and biomass of the Collembola population contributed to the enhanced N mineralization.

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Section: Introductionmentioning

confidence: 99%

Influence of Collembola on nitrogen mineralization varies with soil moisture content

Kaneda

Kaneko

2011

Soil Science and Plant Nutrition

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“…For example, the density of small arthropods, a common prey type for numerous predators, is affected by rainfall (Shultz, Lensing, & Wise, 2006;Staley et al, 2007) and temperature (Bale et al, 2002;PearceHiggins, Dennis, Whittingham, & Yalden, 2010), both of which may change unexpectedly. Additionally, for ectothermic predators, rate (and potentially efficiency) of foraging is positively correlated with temperature (Kruse, Toft, & Sunderland, 2008).…”

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confidence: 99%

Temporal patterns of nutrition dependence in secondary sexual traits and their varying impacts on male mating success

Rosenthal

Hebets

2015

Animal Behaviour

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“…For example, spiders have been found variously to reduce (Lawrence and Wise, 2000;Wise, 2004;Miyashita and Niwa, 2006), increase (Lensing and Wise, 2006;Schultz et al, 2006), and have no effect (Schultz et al, 2006) on densities of Collembola within forest litter, as well as to have contrasting effects on litter decomposition within even the same study locality Wise, 2000, 2004). As with terrestrial salamanders, the causes of this variation are not fully understood, but have been associated with complex interactions among precipitation, drainage properties of forest soils, and changes in Collembola behavior in response to hydric conditions and availability of fungal resources (Lawrence and Wise, 2004;Lensing and Wise, 2006;Schultz et al, 2006). Hence, the magnitude and direction of top-down effects of arthropod predators seem contingent upon microclimate and bottom-up conditions of moisture content and resource availability.…”

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confidence: 99%

Top-Down Regulation of Litter Invertebrates by a Terrestrial Salamander

Walton

2013

Herpetologica

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Terrestrial plethodontid salamanders are abundant predators within the forest floor litter of eastern North America, and are hypothesized to regulate soil and litter invertebrate density and species composition. I tested this hypothesis during a 6-yr study of the effects of the Eastern Red-backed Salamander (Plethodon cinereus) on the invertebrate community of a forest site in northeast Ohio. Salamander surface density, invertebrate abundance, and community composition were monitored within 30 open, circular plots. Variation in plot occupancy by P. cinereus was achieved by supplying plots with differing amounts of artificial cover (0, 1, or 4 ceramic tiles) that served as refuges for the salamanders. Salamander plot occupancy, invertebrate density, leaf litter mass, and leaf litter moisture were quantified each spring and fall from 2003 through 2008. Statistically significant effects of salamander plot-occupancy on invertebrate densities were found for several taxa of mesofauna, including several Collembola taxa, oribatid mites, pseudoscorpions, and psocoptera. The strength and direction of salamander effects varied among taxa and included negative, positive, and no effects on invertebrate densities. The magnitude and sign of salamander effects on invertebrate densities were predicted by seasonal and interannual variation in leaf litter mass and, to a lesser extent, litter moisture content. Salamander effects decreased with increasing litter mass and were more often negative when litter mass was high, whereas positive effects on invertebrate densities were more likely when litter mass was low. For several taxa, the positive effect of P. cinereus also increased with litter moisture. I propose two mechanistic hypotheses for these dynamics that integrate behavioral ecology of salamander prey selection and territorial defense with variation in litter mass and litter moisture.

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Effects of altered precipitation and wolf spiders on the density and activity of forest-floor Collembola

Cited by 19 publications

References 30 publications

Influence of Collembola on nitrogen mineralization varies with soil moisture content

Influence of Collembola on nitrogen mineralization varies with soil moisture content

Temporal patterns of nutrition dependence in secondary sexual traits and their varying impacts on male mating success

Top-Down Regulation of Litter Invertebrates by a Terrestrial Salamander

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