 |
C. Andrew Dolloff, Ph.D.
|
|---|
Academic Interests:
- Stream ecology
- Watershed and riparian management
- Forestry and fishery interactions
Courses Taught:
- Stream Habitat Management
- Values, Uses and Conflicts in Management of Renewable Natural Resources
- Watershed Restoration
Professional Achievements:
- Program Committee, 1997, 98 American Fisheries Society (AFS) Annual Meetings
- Program Chair, 1999, AFS Time and Place Committee 1999-2000
- Associate Editor, Transactions of the American Fisheries Society 1996-1998
Recent Publications:
Verry, E. S., J. Hornbeck, and C. A. Dolloff, eds. 2000. Riparian management in forests of the eastern continental United States. CRC-Lewis Publishers, FL.
Dolloff, C. A. 2000. Fish and aquatic organisms. Chapter 17 in G. E. Dissmeyer, ed. Drinking water from forests and grasslands - A synthesis of the scientific literature. USDA Forest Service WO-GTR. 248 pages.
Burrell, K. H., D. H. Van Lear, D. B. Bunnell, J. J., and C. A. Dolloff. 2000. Seasonal movement of brown trout in a southern Appalachian river. Transactions of the American Fisheries Society 129:1373-1379.
Bulger, A. J., B. J. Cosby, C. A. Dolloff, K. N. Eshelman, J. R. Webb, and J. N. Galloway. 2000. The Shenandoah National Park: Fish In Sensitive Habitats (SNP: FISH) project: an integrated assessment of fish community responses to stream acidification. Final Report, Volumes 1-4.
Stahl, G., and C. A. Dolloff. 2002. Coarse woody debris. Entry for Encyclopedia of Environmetrics, edited by A. El-Shaarawi and W. Piegorsch, section editor Timothy Gregoire. J. Wiley & Sons, Ltd.
Angermeier, P. L., K. L. Krueger, and C. A. Dolloff. 2002. Discontinuity in stream-fish distributions: Implications for assessing and predicting species occurrence. In Predicting species occurrences: issues of accuracy and scale, (Scott, J. M., P. J. Heglund, M. Morrison, M. Raphael, J. Haufler, B. Wall, eds) Island Press, Covello, CA. 840 p.
Roghair, C. N., C. A. Dolloff, and M. K. Underwood. 2002. Response of a brook trout population and instream habitat to a catastrophic flood and debris flow. Transactions of the American Fisheries Society 131:718-730.
Danehy, R. J., C. Luce, N. H Ringler, and C. A. Dolloff. 2002. Reflection on Forest Management: Can Fish and Fiber Coexist? A review of an American Fisheries Society Symposium. Western Forester Sept./Oct. issue.
Bilby, R. E., G. H. Reeves, and C. A. Dolloff. 2003. Sources of Variability in Aquatic Ecosystems: Factors controlling biotic production and diversity. Chapter 6 (pages 129-146) in R. C. Wissmar and P. A. Bisson (editors) Strategies For Restoring River Ecosystems: Sources of Variability And Uncertainty in Natural and Managed Systems. American Fisheries Society Special Publication.
Dolloff, C. A., and M. L. Warren. In Press. Fish Relationships with Wood in Small Streams. Proceedings of the International Conference on Wood in World Rivers. American Fisheries Society Special Publication.
Recent Activities:
The Effects of Forested Riparian Buffer Width and Timber Harvest Intensity
on Headwater Appalachian Streams
(USFS Southern Research Station; National Council on Air and Stream Improvement;
MeadWestvaco Corp.)
Natural resource managers widely recognize the benefits associated with forested
riparian buffers, also known as streamside management zones (SMZs), forested
filter strips, or simply buffer strips. Although best management practices
(BMPs) - including SMZs - when properly installed and monitored have been
shown to protect water quality during performance of silvicultural operations,
use of BMPs is voluntary and inconsistent across most jurisdictions. In addition,
there is little research which documents how wide SMZs should be and what
level of residual timber should be left to protect water quality. We are documenting
how specific activities within forested streamside management zones (SMZs)
influence water quality and other attributes related to ecosystem health and
function. We anticipate that guidelines will be developed for use by forest,
farm, or urban landowners for protection and enhancement of stream water quality,
channel stability, and aquatic biota.
Recovery of a Fish Assemblage Following a 500+ Year Flood and Debris
Flow
(USFS Southern Research Station; USGS Biological Resources Division, 1997-2005)
Public lands, especially national parks, are often the last refuge from anthropogenic
disturbance for native fish communities. By definition few in number, each
refuge stream assumes increasing importance as disturbances across landscapes
increase in frequency and magnitude. When one of these refuges is lost or
severely damaged by a large disturbance, the negative effects are amplified
because of the scarcity of the resource. To properly manage and protect such
rare resources, we need to determine the recolonization potential of native
fishes in the context of fragmented habitats, and to determine potential physical,
chemical, and biological barriers to recolonization (both permanent and seasonal).
Fish populations were completely extirpated from 3 km of stream during a combined
flood and debris flow in Staunton River, Shenandoah National Park. We are
conducting basinwide habitat and fish surveys and mark?recapture studies to
estimate rates, patterns, seasonality, and sources of recolonizing species.
The potential rate of recovery from disturbances of a magnitude such as experienced
in the 1995 flood are largely unknown because information on predisturbance
conditions is lacking. Because the physical, chemical, and biological environment
of Staunton River was relatively well described before the flood, we have
a rare opportunity - including a natural experimental design - to study and
understand the response and recovery of a native fish assemblage to a catastrophic
natural event.
Basinwide Estimation of Habitat and Fish Production in an Acid-sensitive
Watershed
(USFS Southern Research Station, USNPS Shenandoah National Park, 1992-2004)
Specific attributes (e.g. distribution, species composition, production) of
fish populations in an acid-sensitive stream are being evaluated each spring
and fall. Levels of acid neutralizing capacity (ANC) are linked to fish community
response and within basin variability of physical habitat.
Longitudinal Patterns of Community Structure for Stream Fishes in a
Virginia Tailwater
(Virginia Dept. of Game and Inland Fish, 2001-2005)
Peaking flow regimes associated with hydroelectric facilities pose unnatural
conditions through the frequency of high magnitude flows and the rate of change
in flow. Few aquatic organisms are adapted to thrive in this type of environment
though some species are more resistant than others to habitat variability.
A peaking flow environment is associated with changes in critical habitat
variables during water release including changes in depth, width, velocity,
water temperature, and water quality. We are examining the abundance, composition,
and distribution of 34 fishes within the first 24 km below Philpott Dam on
the Smith River, a hydropeaking system in Virginia. This project is part of
a larger effort to determine the probable influence of variable flow regimes
on fish community dynamics.
Influence of Large Woody Debris on Stream Habitat and Fish Populations
(USFS Southern Research Station, 1993-?)
Because of past land use, large woody debris is absent or in short supply
in most southern mountain streams. This study is documenting the amount, in-stream
role, persistence, and relationship to trout, macroinvertebrates, and channel
morphology of large woody debris added to two southern Appalachian streams.
Distribution and Movement of American Eels in Selected Virginia Watersheds
(USFS Southern Research Station, USF, George Washington and Jefferson National
Forest, Virginia Dept. of Game and Inland Fish, 1999- 2003)
The upstream distribution and relative abundance of American eels Anguilla
rostrata in Virginia is incompletely known. Eels historically have occupied
streams in every Atlantic coast watershed. However, barriers of various types
may be limiting eel access to traditional headwater habitats. In addition,
little is known about the seasonal movements and habitat use by American eels
in Virginia. This research is designed to: 1), document the presence/absence,
distribution, and relative abundance of American eels in selected headwater
tributaries of the James and Potomac rivers in Virginia, and 2), use radiotelemetry
and passive integrated transponders to monitor the seasonal movements and
habitat use of American eels along a stream network.
Development of Methods for Inventorying Rare Fish
(USFS Southern Research Station and Center for Aquatic Technology Transfer,
1997-2003)
The distribution and abundance of many threatened or endangered fish
species cannot be determined by standard techniques such as electrofishing.
We are developing new ways to evaluate fish populations using combinations
of techniques such as calibrated diver counts and limited electrofishing.
Examples of fish species examined include the blackside dace Phoxinus cumberlandensis
and the candy darter Etheostoma osburni.
Last updated April 2, 2003