Report Number: 32344
Permit Number: CRLA-2004-SCI-0001
Current Status: Checked in
Date Received: Apr 01, 2005
Reporting Year:
2004
Principal Investigator:
Dr Jennifer Apple,
Willamette University,
Biology Department,
Salem, OR
Additional investigator(s):
John G. Bishop
Park-assigned Study Id. #:
CRLA-03031
Permit Expiration
Date:
Apr 30, 2006
Permit Start Date:
Apr 01, 2004
Study Starting
Date:
Apr 01, 2004
Study Ending Date:
Dec 31, 2008
Study
Status:
Suspended
Activity Type:
Research
Subject/Discipline:
Ecology (Aquatic, Marine, Terrestrial)
Objectives:
For over 10 years at Mount St. Helens,
researchers have documented heavy and
spatially structured herbivory on Lupinus
lepidus plants that have colonized the
barren pumice flats that resulted from the
1980 eruption. L. lepidus can be found
throughout the Cascade Range, but usually at
much higher elevations and in more stable
alpine communities than exist at Mount St.
Helens. The insect herbivores of L. lepidus
have never been studied in its typical
nonsuccessional habitat, though they are
known to occur at Crater Lake National Park,
Mount Hood, and Mount Rainier. This project
is designed to both characterize the
relationship between Lupinus lepidus and its
insect herbivores throughout Crater Lake
National Park, and to compare this
interaction to that observed in the
relatively young plant community that exists
at Mount St. Helens. Our study has three
main objectives: (1) To determine the
prevalence of insect herbivory on Lupinus
lepidus at Crater Lake and assess the impact
of herbivore damage on plant fitness; (2) To
characterize any variation in
lupine-herbivore interactions across
different habitats and vegetative
associations throughout Crater Lake National
Park; (3) To assess the genetic similarity
among insect herbivore populations at Crater
Lake, Mount St. Helens, and other locations
throughout the Cascades and to infer their
history of colonization of different lupine
patches. Studying these interactions over
widely separated locations and varied
habitats may identify factors that determine
the strength of the effects of herbivores on
lupines, perhaps explaining the dramatic
impacts that we observe at Mount St. Helens.
Furthermore, our work may provide insight
into the history of particular insect-lupine
interactions and illuminate patterns in the
colonization of new lupine populations (such
as that at Mount St. Helens or in other
primary successional settings) by their
insect herbivores.
Findings and Status:
No
activity was conducted this report year.
For
this study, were one or more specimens collected and
removed from the park but not destroyed during
analyses?
No
Funding provided
this reporting year by NPS:
0
Funding provided
this reporting year by other sources:
0
Full name of
college or university: n/a
Annual funding
provided by NPS to university or college this
reporting year:
0
