Related Experiment Video
Updated: Aug 18, 2025
10:20
Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
Published on: March 12, 2013
13.5K
Multidimensional stoichiometric mismatch explains differences in detritivore biomass across three forest types
Bing Zhang1, Haozhen Chen1, Mingqin Deng1
1Key Laboratory for Earth Surface Processes of the Ministry of Education, Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing, China.
The Journal of Animal Ecology
|December 8, 2022
Summary
Long-term pine plantations reduce soil animal biomass by increasing stoichiometric mismatches between detritivores and their litter resources. This highlights the impact of forest management on soil ecosystems.
Area of Science:
- Ecology
- Soil Science
- Environmental Science
Background:
- Ecological stoichiometry theory explains organism fitness and population dynamics via resource-consumer stoichiometric mismatch.
- Soil animals occupy distinct multidimensional stoichiometric niches (MSNs), influencing their responses to resource alterations.
- Forest plantations can alter soil elemental composition and affect detritivore communities.
Purpose of the Study:
- To investigate the long-term effects of forest plantations on the elemental content of litter and detritivores (earthworms and millipedes).
- To analyze how multidimensional stoichiometric niches (MSNs) and stoichiometric mismatches influence detritivore population size (density and biomass).
- To compare these effects across natural oak forests, pine plantations, and larch plantations.
Main Methods:
- Evaluated the elemental content of 10 elements in litter and two detritivore taxa (earthworms, millipedes) across three forest types.
- Quantified multidimensional stoichiometric niches (MSNs) and stoichiometric mismatches for each detritivore taxon.
- Assessed the relationship between mismatch patterns and detritivore density and biomass.
Main Results:
- Sixty-year pine plantations altered litter elemental content but not detritivore elemental composition.
- Earthworms and millipedes showed distinct MSNs and mismatch patterns, with greater mismatches in pine plantations compared to oak and larch forests.
- Increased stoichiometric mismatches in pine plantations correlated with lower detritivore density and biomass, despite maintained body elemental content.
Conclusions:
- Pine plantations create conditions of low litter quality and severe stoichiometric mismatches, leading to reduced detritivore population biomass.
- The multidimensional stoichiometric framework effectively explains the impact of forest plantations on soil animal population dynamics.
- This approach can aid in understanding ecosystem responses to global environmental changes.
Related Concept Videos
00:46Trophic Efficiency
21.1K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
21.1K
01:14Multicompartment Models: Overview
214
Multicompartment models are mathematical constructs that depict how drugs are distributed and eliminated within the body. They segment the body into several compartments, symbolizing various physiological or anatomical areas connected through drug transfer processes such as absorption, metabolism, distribution, and elimination.
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
214
02:02Ecological Niches
24.1K
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
24.1K
01:13Multiple Comparison Tests
4.0K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
4.0K
02:31Habitat Fragmentation
17.7K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
17.7K
01:23Mechanistic Models: Compartment Models in Individual and Population Analysis
75
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
75