Temperaturna odvisnost razgradnje opada v tleh travnikov v zaraščanju

The aim of the study was to examine whether the effect of projected temperature rises due to the global climate change could accelerate plant litter decomposition in soils of overgrown grasslands. The experiment was carried out under natural conditions at the locations of Bohinj-Polje and Uskovnica with similar environmental conditions (precipitation, parent material and soil development, plant communities) and the difference in air temperatures. The average difference in monthly air temperatures during our study were higher in Bohinj for 4.4 °C (± 1.5 °C) than in Uskovnica. Nylon mesh bags with mixed plant litter from both locations were placed into the Of horizon of the soil profiles at both locations in autumn 2007. The litter bags were sampled successively at 4 sampling times until May 2009 in 5 replicates. The litter degradation, expressed as mass loss, was throughout our study 57.1 ± 1.2 % (0 - 526 days) in Bohinj, 57.3 ± 2.6 % (0 - 555 days) at Uskovnica. No statistically significant differences in litter decomposition rate and seasonal pattern of mass loss was found between the sites. The dynamics of the total content of cellulose and lignin, Corg and N and their soluble forms (DOC and DON) were similar between the sites as well. The lignin content in the plant material did not statistically significantly change during the experiment. The results of our experiment did not confirm the effect of the difference in average air temperature on decomposition rate decreases. The results did not confirm any effect from the difference in the average monthly air temperature between the sites on the plant litter decomposition in our study.

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A field study of tundra plant litter decomposition rate via mass loss and carbon dioxide emission: The role of biotic and abiotic controls, biotope, season of year, and spatial-temporal scale

Biology Bulletin Reviews ◽

10.1134/s2079086415010077 ◽

2015 ◽

Vol 5 (1) ◽

pp. 1-16 ◽

Cited By ~ 2

Author(s):

A. V. Pochikalov ◽

D. V. Karelin

Keyword(s):

Carbon Dioxide ◽

Mass Loss ◽

Field Study ◽

Litter Decomposition ◽

Decomposition Rate ◽

Carbon Dioxide Emission ◽

Plant Litter ◽

Plant Litter Decomposition ◽

Abiotic Controls

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Spatial Variability of Plant Litter Decomposition in Stream Networks: from Litter Bags to Watersheds

Ecosystems ◽

10.1007/s10021-017-0169-1 ◽

2017 ◽

Vol 21 (3) ◽

pp. 567-581 ◽

Cited By ~ 9

Author(s):

Alan Mosele Tonin ◽

Luiz Ubiratan Hepp ◽

José Francisco Gonçalves

Keyword(s):

Spatial Variability ◽

Litter Decomposition ◽

Plant Litter ◽

Stream Networks ◽

Litter Bags ◽

Plant Litter Decomposition

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Temperature sensitivity of plant litter decomposition rate in China's forests

Ecosphere ◽

10.1002/ecs2.3541 ◽

2021 ◽

Vol 12 (6) ◽

Author(s):

Fan Zhang ◽

Yuhao Feng ◽

Shanshan Song ◽

Qiong Cai ◽

Chengjun Ji ◽

...

Keyword(s):

Litter Decomposition ◽

Temperature Sensitivity ◽

Decomposition Rate ◽

Plant Litter ◽

Litter Decomposition Rate ◽

Plant Litter Decomposition

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Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects

The Rangeland Journal ◽

10.1071/rj18070 ◽

2019 ◽

Vol 41 (5) ◽

pp. 371

Author(s):

Mariela L. Ambrosino ◽

Carlos A. Busso ◽

Yanina A. Torres ◽

Leticia S. Ithurrart ◽

Juan M. Martínez ◽

...

Keyword(s):

Litter Decomposition ◽

Leaf Blade ◽

Plant Litter ◽

Perennial Grasses ◽

Litter Production ◽

Litter Bags ◽

N Content ◽

Plant Litter Decomposition ◽

Root Litter ◽

Aboveground Litter

Plant litter decomposition is critical for terrestrial ecosystem productivity. Poa ligularis Nees ex Steud and Nassella tenuis (Phil.) Barkworth are native, desirable perennial grasses in central Argentina’s rangelands. Amelichloa ambigua (Speg.) Arriaga & Barkworth is only consumed when a better forage is unavailable. Litter traps were used to collect aboveground litter during two years. In March 2012, six bags, each one containing either leaf blade (three bags, one per species) or root litter (three bags, one per species) of the three species were located below the canopy of each replicate plant of the studied species (hereafter referred to as ‘location’). Blade litter bags were located on the soil surface, and root litter bags buried at 10cm soil depth. This allowed evaluation of the effects of defoliation, the different species canopies and the microbial community activity around their roots on decomposition of above- and belowground litter. For each species, twenty plants were either defoliated twice (5cm stubble height) or remained undefoliated during the growing season. Litter bags were collected after 2, 7, 13 and 24 months incubation. The study was repeated in 2013, with additional bags were placed for N content determination on leaf blade and root litters. Aboveground litter production was highest in P. ligularis; however, no differences were observed among species when the effect of plant size was eliminated. Aboveground litter of desirable species had higher N content and decomposed faster than that of A. ambigua. The opposite was recorded for root litter. Defoliation had no effect on litter decomposition, but location effects were detected after one year of incubation. Desirable perennial grasses promoted organic matter loss from litter, a key factor in increasing soil fertility in this semiarid ecosystem.

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Ants accelerate litter decomposition in a Costa Rican lowland tropical rain forest

Journal of Tropical Ecology ◽

10.1017/s0266467412000375 ◽

2012 ◽

Vol 28 (5) ◽

pp. 437-443 ◽

Cited By ~ 15

Author(s):

Terrence P. McGlynn ◽

Evan K. Poirson

Keyword(s):

Mass Loss ◽

Leaf Litter ◽

Litter Decomposition ◽

Rain Forest ◽

Costa Rican ◽

Tropical Rain Forests ◽

Rain Forests ◽

Food Web Structure ◽

Litter Bags ◽

Lowland Rain Forest

Abstract:The decomposition of leaf litter is governed, in part, by litter invertebrates. In tropical rain forests, ants are dominant predators in the leaf litter and may alter litter decomposition through the action of a top-down control of food web structure. The role of ants in litter decomposition was investigated in a Costa Rican lowland rain forest with two experiments. In a mesocosm experiment, we manipulated ant presence in 50 ambient leaf-litter mesocosms. In a litterbag gradient experiment, Cecropia obtusifolia litter was used to measure decomposition rate constants across gradients in nutrients, ant density and richness, with 27 separate litterbag treatments for total arthropod exclusion or partial arthropod exclusion. After 2 mo, mass loss in mesocosms containing ants was 30.9%, significantly greater than the 23.5% mass loss in mesocosms without ants. In the litter bags with all arthropods excluded, decomposition was best accounted by the carbon: phosphorus content of soil (r2 = 0.41). In litter bags permitting smaller arthropods but excluding ants, decomposition was best explained by the local biomass of ants in the vicinity of the litter bags (r2 = 0.50). Once the microarthropod prey of ants are permitted to enter litterbags, the biomass of ants near the litterbags overtakes soil chemistry as the regulator of decomposition. In concert, these results support a working hypothesis that litter-dwelling ants are responsible for accelerating litter decomposition in lowland tropical rain forests.

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