Trophic structure of a macroarthropod litter food web in managed coniferous forest stands: a stable isotope analysis with δ15N and δ13C

Halaj, Juraj; Peck, Robert W.; Niwa, Christine G.

doi:10.1016/j.pedobi.2004.09.002

Cited by 55 publications

(33 citation statements)

References 31 publications

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“…Therefore, these ratios can be used to study the foodweb. Recent publications have described soil foodwebs using these ratios (Ponsard and Arditi 2000;Scheu and Falca 2000;Halaj et al 2005;Tiunov 2007;Okuzaki et al 2009). However, isotopic studies on soil foodwebs are still under development.…”

Section: Introductionmentioning

confidence: 99%

Effects of Vegetation Switch and Subsequent Change in Soil Invertebrate Composition on Soil Carbon Accumulation Patterns, Revealed by Radiocarbon Concentrations

et al. 2010

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Vegetation types strongly affect soil organic carbon (SOC) accumulation in the terrestrial ecosystem through multiple factors such as litter quality and soil biodiversity. However, the roles of soil fauna in SOC accumulation remain unclear. The objectives of this study were to (1) examine how changes in litter types and soil animal communities affect SOC accumulation in continuously forested or vegetation-switched forest areas; and (2) discuss the role of soil animals in SOC accumulation in forest ecosystems. We focused on soils that have accumulated on top of a volcanic ash layer in the 268 yr since a volcanic eruption in 1739. The radiocarbon “bomb spike”' in the late 1950s and early 1960s provides a unique isotopic signature of soil carbon age. We investigated the combined effects of litter quality and soil invertebrate function on soil 14C accumulation patterns. To determine the effects of vegetation types on SOC accumulation, we selected 4 types of cool temperate forests, 2 of which had undergone a vegetation switch in about 1960 (conifer to broadleaved forest, CB; broadleaved forest to conifer, BC), and 2 that had continuous forests (conifer forest, CC; broadleaved forest, BB). The Δ14C values at depth intervals in CC were consistent with the expected bomb-14C profile. In contrast, Δ14C patterns in BB, BC, and CB differed from that of CC. Compared to CC, Δ14C values of the other sites showed relatively high 14C concentrations even in deeper soil layers, which suggests the bomb-induced 14C has been transported to a greater depth by soil animals. Current broadleaved forests (BB and CB) had higher biomass of litter-feeding invertebrates than in current coniferous forests (CC and BC). These results suggest that carbon from leaf litter was vertically translocated to deeper soil layers by the abundant soil invertebrates in broad-leaved forests. Disagreement with the expected soil profile in BC suggests that past vegetation (broadleaved forest) has affected the present SOC accumulation pattern.

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Section: Introductionmentioning

confidence: 99%

Effects of Vegetation Switch and Subsequent Change in Soil Invertebrate Composition on Soil Carbon Accumulation Patterns, Revealed by Radiocarbon Concentrations

et al. 2010

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“…Abundance was significantly lower in raked than intact stands for Tomoceridae in 2009 and 2010 (Tukey HSDs, p = 0.001); in contrast, abundance was higher in raked than intact stands for Isotomidae in 2010 (Tukey HSD, p = 0.017, Figure 4). Springtails are highly abundant, low-mobility microarthropods at the bottom of food webs [47], where they are responsible for mineralizing soil nutrients. Because of their relative abundance and their role as decomposers, they have a high potential to influence site productivity.…”

Section: Abundance Of Collembolamentioning

confidence: 99%

“…Grasshoppers and crickets are relatively low-mobility arthropods that occupy an intermediate tropic position, serving primarily as herbivores [47]. Previous research has found mixed responses of this taxa to disturbances, with some families increasing in abundance [65] and others decreasing, often followed by a fairly quick recovery [43].…”

Section: Occurrence Of Orthopteramentioning

confidence: 99%

Repeated Raking of Pine Plantations Alters Soil Arthropod Communities

Ober

DeGroote

2014

Forests

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Terrestrial arthropods in forests are engaged in vital ecosystem functions that ultimately help maintain soil productivity. Repeated disturbance can cause abrupt and irreversible changes in arthropod community composition and thereby alter trophic interactions among soil fauna. An increasingly popular means of generating income from pine plantations in the Southeastern U.S. is annual raking to collect pine litter. We raked litter once per year for three consecutive years in the pine plantations of three different species (loblolly, Pinus taeda; longleaf, P. palustris; and slash, P. elliottii). We sampled arthropods quarterly for three years in raked and un-raked pine stands to assess temporal shifts in abundance among dominant orders of arthropods. Effects varied greatly among orders of arthropods, among timber types, and among years. Distinct trends over time were apparent among orders that occupied both high trophic positions (predators) and low trophic positions (fungivores, detritivores). Multivariate analyses demonstrated that raking caused stronger shifts in arthropod community composition in longleaf and loblolly than slash pine stands. Results highlight the role of pine litter in shaping terrestrial arthropod communities, and imply that repeated removal of pine straw during consecutive years is likely to have unintended consequences on arthropod communities that exacerbate over time. OPEN ACCESSForests 2014, 5 690

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“…PRPs were established for a growth and yield model constructed for five main tree species in the 60's and 70's for the conditions of the Czechoslovakia (Halaj 1978;Halaj et al 1987;Halaj, Petráš 1998). Out of all plots, the plots that are located in the Western Carpathians were selected for these analyses (Fig.…”

Section: Site and Stand Descriptionmentioning

confidence: 99%

“…Hägglund, Lundmark 1977;Monserud 1984;Schönau 1987;Rayner, Turner 1990;Rayner 1992;MacFarlane et al 2000). In pure, even-aged stands, the height of dominant trees at a reference age (site index) is almost independent of competition (Halaj 1978;Lanner 1985;Šmelko et al 1992). On the contrary, a few studies showed some density dependence of height growth even for dominant trees in even-aged stands (e.g.…”

Section: Height-age Modelmentioning

confidence: 99%

Site classification vs. wood production: a case study based on Silver fir growth dynamics in the Western Carpathians

Bošeľa¹,

Petráš²,

Smelko³

2011

J. For. Sci.

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ABSTRACT:We analysed wood production on an example of Silver fir growth ability within site units defined in the site classification that is currently used in the Western Carpathians. It has arisen as a very important issue, since the site units have been widely used in forestry practice and, moreover, it represents one of the input variables of growth model. Research plots established for development of a yield model for Silver fir in the sixties were used. The Korf growth equation was used to model the Silver fir growth, since it showed the best fit to the data compared to other equations. The test of residual variance of the growth models and the test of regression coefficients of the growth models were employed to investigate the differences in top-height growth of Silver fir occurring on different sites. Results showed a very high variability of the top height development within the site units. Nevertheless, two main groups of sites being different from each other were recognized. But, significant differences in the height growth of fir between site units were found mainly in mature stands starting at the age of 60, which could be due to different soil depth and nutrient regime. Lastly, discussions about the approaches to site classifications all over the world showed many alternatives used to develop a classification scheme with different and in many cases unknown precision, and thus there is a need for the objectivity of classification.

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Trophic structure of a macroarthropod litter food web in managed coniferous forest stands: a stable isotope analysis with δ15N and δ13C

Cited by 55 publications

References 31 publications

Effects of Vegetation Switch and Subsequent Change in Soil Invertebrate Composition on Soil Carbon Accumulation Patterns, Revealed by Radiocarbon Concentrations

Effects of Vegetation Switch and Subsequent Change in Soil Invertebrate Composition on Soil Carbon Accumulation Patterns, Revealed by Radiocarbon Concentrations

Repeated Raking of Pine Plantations Alters Soil Arthropod Communities

Site classification vs. wood production: a case study based on Silver fir growth dynamics in the Western Carpathians

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