Jump to main content.

Research Project Search
 Enter Search Term:
   
 NCER Advanced Search

Anthropogenic Disturbance and Land Use: Impact on Freshwater Parasite Systems

EPA Grant Number: U915734
Title: Anthropogenic Disturbance and Land Use: Impact on Freshwater Parasite Systems
Investigators: McKenzie, Valerie J.
Institution: University of Connecticut
EPA Project Officer: McClure, Karen
Project Period:    
Project Amount: $102,000
RFA: STAR Graduate Fellowships (2000)
Research Category: Academic Fellowships , Aquatic Ecosystems , Fellowship - Aquatic Ecology and Ecosystems

Description:

Objective:

The objective of this research project is to study anthropogenic disturbances to the environment and their effect on parasites and pathogens in wildlife. Parasites are complex and interesting biologically, yet their role in natural ecosystems remains largely unexplored for most animals. The modern world is increasingly altered by human activities that perturbate the surrounding environment (i.e., pollution, watershed alteration, introduced species, etc.). Many of these disturbances confer shifts in parasite abundances of host animals, yet the causal mechanisms are not understood.

Approach:

The research I have begun in Costa Rica investigates whether the parasite burdens are different depending on the habitat quality that the hosts inhabit. I will parameterize and test a model for the relationship between eutrophication, algae production, and host densities. This model will be applicable to many host-parasite systems. I will address these topics in three parts. Part I will develop a descriptive ecology of the parasites of three species of Costa Rican amphibians. Part II will compare the parasite communities of each of the three species across the disturbance gradient defined by rainforest and clear-cut pasture areas. Part III will consider eutrophication and develop a model to create a predictive framework striving to evaluate conditions that increase the impact of trematode parasites on vertebrate hosts.

Supplemental Keywords:

fellowship, land use, parasite systems, parasites, anthropogenic disturbances, pathogens, amphibians. , Ecosystem Protection/Environmental Exposure & Risk, INTERNATIONAL COOPERATION, Geographic Area, Scientific Discipline, RFA, ECOSYSTEMS, Aquatic Ecosystems & Estuarine Research, Terrestrial Ecosystems, Aquatic Ecosystem, Water, Monitoring/Modeling, Environmental Monitoring, International, watershed management, ecosystem indicators, nitrogen uptake, diagnostic indicators, land use, conservation planning, stream geomorphology, watersheds, rain forest, aquatic ecosystems, biological indicators, bioassessment, Costa Rica, anthropogenic stress, ecosystem stress, ecosystem response, ecosystem monitoring, biodiversity

Top of page

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

Local Navigation

Jump to main content.