Email
tihde@vims.edu
Office
Fisheries Science Laboratory
Rm.130
Phone
(804) 684-7583
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Thomas F. Ihde
Zoology
Marine Science
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Research Interests
My research interests concern the assessment of exploited fisheries, and the development of new
models and
field methods to conserve fishery resources. Abundance estimation in data
limited circumstances has been the concern of my dissertation work.
Of specific interest are: invertebrate species like lobster, which are difficult (if not
impossible, currently) to age, and anadromous populations of shad, which
require individual assessment by river, but whose abundance is unknown until
they return to their natal rivers to spawn in their third or fourth year.
The long-term consequences of fisheries exploitation are of particular interest
to me, especially the potential for size-selective fishery pressure to cause
evolution in exploited populations. Of critical importance to management
are the effects of fisheries-selection on long-term yield, and the capacity for
recovery in stocks that have been overexploited for
decades.
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Current Projects
- Estimating abundance in the Tasmanian rock lobster fishery (With J.M.
Hoenig and S.D.
Frusher.)
- Lab and field experimental investigations of hypothesized behavioral
inhibition of juvenile lobster (Jasus edwardsii) from entering traps in
the presence of large lobster (With J.M.
Hoenig and S.D.
Frusher.)
PLEASE
NOTE: this is a BIG file (10MB
MP3), not
recommended for slow connections:
Radio Interview on this project broadcast
on November 3rd, 2003 on
Tasmanian Public Radio
- Design of a generalized index-removal model to estimate spawning run size of
American shad, Alosa sapidissima, which allows for various assumptions about
catchability (With J.M.
Hoenig)
- Life history of the spotted seatrout, Cynoscion nebulosus, in the
Chesapeake Bay. (With M.E.
Chittenden, Jr.)
- Evaluating the effectiveness of a marine protected
area at Glover's Reef Atoll, Belize, C.A.. (With J.M.
Hoenig and the Wildlife
Conservation Society)
- New morphological descriptions of Chrysophyte cysts of Lake Baikal, Siberia.
(With C.D.
Sandgren)
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Selected Publications
-
Ihde, T.F., S.D. Frusher and J.M. Hoenig. Do
Large Rock Lobsters Inhibit Smaller Ones From Entering Traps?
– A Field Experiment.
Marine and Freshwater Research. In Second Review.
- Frusher, S.D., J.M. Hoenig and T.F. Ihde. Evaluating the
performance of change-in-ratio and index- removal estimators, with
application to southern rock lobster. In Review.
- Ihde, T.F., J.M. Hoenig and S.D. Frusher. Evaluation
of a multi-year index-removal abundance estimator, with application to a
Tasmanian rock lobster fishery. In Prep.
- Ihde, T.F., J.M. Hoenig and S.D. Frusher. An
index-removal abundance estimator that allows for seasonal change in
catchability, with application to rock lobster. In Prep.
- Ihde, T.F. and M.E. Chittenden, Jr. Reproductive life history, age
and size composition, growth and mortality of Chesapeake Bay spotted
seatrout. In Prep.
- Ihde, T.F., and J.M. Hoenig. Generalized index-removal models of
iteroparous species with application to
the Virginia stock of American
shad in York River. In Prep.
- Sandgren, C.D., T.F. Ihde and Ye.V. Likhoshway. Morphological
descriptions and stratigraphic distributions of chrysophyte cysts from
the recent sediments of Lake Baikal, Siberia. In Prep.
-
Ihde, T.F., and M.E. Chittenden, Jr. 2002.
Comparison of calcified structures for aging spotted
seatrout.
Transactions
of the American Fisheries Society 131:634–642. (pdf
file)
-
Ihde,
T.F. and M.E. Chittenden, Jr.
2003. Validation of presumed
annual marks on sectioned otoliths of
spotted
seatrout, Cynoscion nebulosus, in the Chesapeake Bay region. Bulletin of
Marine Science. 72:77-87. (Draft MS pdf
file)
Many thanks to the following institutions for funding my PhD studies:
Check out these great organizations:
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