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Infection
When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
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The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
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[Resource availability and its role in development of invasion processes].
Zhurnal Obshchei Biologii
|November 11, 2010
Summary
Successful biological invasions, like zebra mussels and smelt, depend on unused resources in water bodies. Invasive species thrive when they exploit
Area of Science:
- Ecology
- Aquatic Ecosystems
- Invasive Species Biology
Context:
- Analysis of biotic communities in diverse water bodies to understand invasion dynamics.
- Case studies of zebra mussel (Dreissena polymorpha) in Naroch Lakes and smelt (Osmerus eperlanus) in Lake Syamozero.
Purpose:
- To determine the conditions that facilitate the development of biological invasions.
- To identify key factors influencing the success of invasive species in new environments.
Summary:
- Utilizes mass-balance and dynamic models to analyze invasion mechanisms.
- Identifies the availability of unutilized resources ('excess production') as a primary factor for successful invasions that lengthen food chains.
- Highlights that invasion success is contingent on 'excess' production exceeding a critical threshold and the timing of introduction in heterogeneous environments.
Impact:
- Provides insights into the ecological principles governing biological invasions.
- Informs predictions and management strategies for aquatic invasive species.
- Contributes to understanding ecosystem resilience and the impact of non-native species on food web dynamics.


