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Related Concept Videos

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...
Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
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Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
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Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
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.
Ecological Disturbance02:26

Ecological 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...

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Rapid Diagnosis of Avian Influenza Virus in Wild Birds: Use of a Portable rRT-PCR and Freeze-dried Reagents in the Field
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Deforestation and avian infectious diseases.

R N M Sehgal1

  • 1Department of Biology, San Francisco State University, San Francisco, CA 94132, USA. sehgal@sfsu.edu

The Journal of Experimental Biology
|March 2, 2010
PubMed
Summary

Deforestation significantly impacts infectious disease spread in birds, with unknown consequences for avian health and potential risks to humans. Further research is crucial for predicting and preventing future outbreaks.

Area of Science:

  • Ecology
  • Epidemiology
  • Wildlife Health

Background:

  • Global changes like climate change and habitat loss increase infectious disease spread.
  • Deforestation is a major global event with significant, immediate effects on tropical and temperate regions.
  • The impact of deforestation on avian infectious diseases remains largely unknown.

Purpose of the Study:

  • To investigate the effects of deforestation on the spread of pathogens in birds.
  • To understand how habitat degradation influences disease transmission and susceptibility in avifauna.
  • To explore the potential for altered bird migration and dispersal patterns to introduce novel pathogens.

Main Methods:

  • Utilizing advances in mathematical and computer modeling.
  • Leveraging genomic technologies for pathogen and host analysis.

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  • Employing satellite tracking to monitor bird movements and habitat changes.

    • Main Results:

    • Landscape transformation can have complex and confounding effects on avian diseases, including avian malaria and viral infections.
    • Habitat degradation poses a direct threat to bird species and can alter disease dynamics.
    • Changes in bird dispersal may expose populations to new infectious agents.

    Conclusions:

    • Understanding the disease ecology of deforestation is critical for predicting and preventing outbreaks.
    • Research is imperative to safeguard avifauna, human, and wildlife health globally.
    • New technologies provide powerful tools to study these complex interactions.