Related Experiment Video
Updated: Aug 10, 2026
05:28
Quantifying Corticolous Arthropods Using Sticky Traps
Published on: January 19, 2020
Increasing grazing intensity reduces arthropod diversity and overrides topography-driven community patterns in
Attila Torma1, István Elek Maák2, Gábor Lőrinczi1
1Department of Ecology, University of Szeged, Szeged, 6726, Hungary.
Journal of Environmental Management
|August 8, 2026
Summary
Grazing intensity impacts arthropod communities in karst dolines, affecting biodiversity. Managed grazing can help conserve arthropod diversity in these vital microrefugia.
Area of Science:
- Ecology
- Conservation Biology
- Karst Geomorphology
Background:
- Dolines in karst landscapes are crucial microrefugia for biodiversity.
- Anthropogenic disturbances, like grazing, significantly impact doline ecosystems.
- The influence of grazing intensity on arthropod communities in dolines remains understudied.
Purpose of the Study:
- To investigate the effects of grazing intensity on arthropod communities (spiders, true bugs, ants) in karst dolines.
- To compare arthropod diversity and abundance between doline bottoms and adjacent plateaus under varying grazing conditions.
- To analyze the interactive effects of habitat type and grazing intensity on arthropod communities using structural equation models.
Main Methods:
- A multi-taxa approach using spiders, true bugs, and ants as bioindicators.
- Sampling in 18 doline bottoms and adjacent plateaus in the Aggtelek Karst, Hungary, over two years (one with grazing, one control).
- Application of structural equation models (SEMs) to assess influences of habitat type and grazing intensity.
Main Results:
- Habitat type significantly influenced arthropod diversity, with higher richness and abundance in dolines during the control year.
- Grazing intensity partially altered the habitat-specific diversity patterns through direct and indirect pathways.
- The impact of grazing varied among the studied arthropod taxa.
Conclusions:
- Habitat type, vegetation height, and grazing intensity interact to shape arthropod diversity in karst landscapes.
- Appropriately managed grazing can help maintain arthropod biodiversity in doline microrefugia.
- Conservation planning for karst landscapes should consider the role of managed grazing in preserving biodiversity.
More Related Videos
Related Concept Videos
02:31Habitat Fragmentation
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.
01:50Threats to Biodiversity
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
02:26Ecological Disturbance
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.Ecological disturbances can be caused by an event as small as the trampling of underbrush to an incident as wide-ranging as a forest...
02:39Predator-Prey Interactions
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.Although predation is commonly associated with carnivory, for...
03:33Genetic Drift
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.Life is not fair. A deer grazing contentedly in a field can have her meal cut tragically short by a bolt of lightning. If the doomed doe is one of only three in the population, 1/3 of the population’s gene pool is lost. Random events like this can...
01:39Keystone Species
Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a pivotal role in the...