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Related Concept Videos

Predator-Prey Interactions02:39

Predator-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...
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Keystone 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...
Habitat Fragmentation02:31

Habitat 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.
Microbial Interactions: Predation01:28

Microbial Interactions: Predation

Microbial predation refers to the process by which one microorganism kills and consumes another to obtain nutrients and energy. It encompasses both bacterial and protozoan predators. This interaction plays a crucial role in shaping microbial communities and regulating nutrient cycling.Bacterial Predators: Epibiotic vs. EndobioticBacterial predators are classified based on their mode of attack as either epibiotic or endobiotic. Epibiotic predators, such as Vampirococcus, attach to the surface of...
Threats to Biodiversity01:50

Threats 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...
Trophic Levels01:35

Trophic Levels

All organisms in an ecosystem occupy a trophic level in the food chain. The lowest level consists of primary producers, which synthesize their food from either solar or chemical energy. Each subsequent level obtains energy from the levels below. Detritivores can occupy any of the levels above primary producers.

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Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
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Published on: March 12, 2013

Red in tooth and claw: how top predators shape terrestrial ecosystems.

Christopher N Johnson1

  • 1School of Maine and Tropical Biology, James Cook University, Townsville, Northern Queensland, Australia. christopher.johnson@jcu.edu.au

The Journal of Animal Ecology
|July 20, 2010
PubMed
Summary
This summary is machine-generated.

Top predators like lynx can control mesopredator populations, such as red foxes. This ecological restoration can reduce overall predation pressure on prey species.

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Area of Science:

  • Ecology
  • Wildlife Conservation
  • Predator-Prey Dynamics

Background:

  • Top predators play a crucial role in regulating ecosystem structure.
  • Understanding predator-prey interactions is vital for effective conservation strategies.

Discussion:

  • Recolonizing lynx populations in Finland are demonstrating control over red fox abundance.
  • This top-down regulation by lynx is leading to reduced predation pressure on certain prey species.
  • The study highlights the cascading effects of top predator reintroduction in ecosystems.

Key Insights:

  • Top predators can effectively manage mesopredator populations.
  • Ecological restoration can leverage apex predators for ecosystem control.
  • Lynx reintroduction is linked to altered predation dynamics and prey release.

Outlook:

  • Future ecological restoration programs could incorporate top predator reintroduction.
  • This approach offers a powerful tool for managing mesopredator populations.
  • Further research can explore the long-term impacts on biodiversity and ecosystem resilience.