| NSF Org: |
DEB Division Of Environmental Biology |
| Recipient: |
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| Initial Amendment Date: | June 22, 2005 |
| Latest Amendment Date: | June 22, 2005 |
| Award Number: | 0508552 |
| Award Instrument: | Standard Grant |
| Program Manager: |
Alan Tessier
DEB Division Of Environmental Biology BIO Directorate for Biological Sciences |
| Start Date: | June 15, 2005 |
| End Date: | May 31, 2007 (Estimated) |
| Total Intended Award Amount: | $9,945.00 |
| Total Awarded Amount to Date: | $9,945.00 |
| Funds Obligated to Date: |
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| History of Investigator: |
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| Recipient Sponsored Research Office: |
6823 SAINT CHARLES AVE NEW ORLEANS LA US 70118-5665 (504)865-4000 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
6823 SAINT CHARLES AVE NEW ORLEANS LA US 70118-5665 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): | POP & COMMUNITY ECOL PROG |
| Primary Program Source: |
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| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.074 |
ABSTRACT
Using a combination of field work in the rain forest of Costa Rica, greenhouse experiments, and laboratory analysis, the investigators will examine the relationships between soil fertility and the ability of plants to defend themselves against the wide variety of insect herbivores that feed on their leaves. Plants produce a broad array of toxic chemicals in their leaves that are not directly related to plant growth or maintenance. These toxins may function as defenses against herbivores or other organisms that attack plants. The amounts of toxic chemicals in plants may vary in response to environmental factors such as soil nutrients or light availability, or in reponse to herbivore attack, although the internal changes in plants that occur when
defensive chemical amounts change are poorly understood. The investigators will manipulate the amounts of defensive chemicals in plants by varying the availability of soil nutrients and then measure overall changes in chemical concentration within the plant.
Broader Impacts: The proposed research will address a long-standing debate about the importance of resources in plant defense against herbivores. Understanding the relationship between environmental variables, plant defense, and herbivores may contribute to conservation, agricultural research, and pest
control. Our research will contribute to the training of high school, undergraduate and graduate students in ecological and chemical research
techniques. The broader community will be affected through involvement of
volunteers in research. This work will contribute to outreach programs in
local public schools in New Orleans and seminars in Costa Rica, and results
will be distributed through popular and scientific publications.
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