Coastal Cutthroat Trout: Coastal Cutthroat Trout:

Past, Present, and FuturePast, Present, and Future

R. E. GresswellR. E. Gresswell11,, D. S. BatemanD. S. Bateman33, and C. E.Torgersen, and C. E.Torgersen22

11US Geological Survey, Northern Rocky Mountain Science Center, BoUS Geological Survey, Northern Rocky Mountain Science Center, Bozeman, Montanazeman, Montana22Department of Forest Sciences, Oregon State UniversityDepartment of Forest Sciences, Oregon State University

33US Geological Survey, Forest and Rangeland Ecosystem Science CenUS Geological Survey, Forest and Rangeland Ecosystem Science Center, Corvallis, Oregonter, Corvallis, Oregon

.

U.S. Department of InteriorU.S. Department of Interior

U.S. Geological SurveyU.S. Geological Survey

Coastal cutthroat trout rangeGlacial extent

Guy 2004Guy 2004Guy 2004

Past

“…“… encourage the development of a encourage the development of a

coordinated management plan to coordinated management plan to

restore searestore sea--run cutthroat trout run cutthroat trout

populations”.populations”.

Present

ZZZZ…

Future

DisturbanceDisturbance

Fish Abundance Fish Abundance and Distributionand Distribution

Habitat Habitat QualityQualityand Quantityand Quantity

Landscape Scale Landscape Scale Watershed SamplingWatershed Sampling

Adapted from Frissell et al. 1986

ThirdThird--Order Watersheds Order Watersheds with an Isolated Populationwith an Isolated Population

of Cutthroat byof Cutthroat byEcoregion and GeologyEcoregion and Geology

Coast Range HardCoast Range Hard

Coast Range SoftCoast Range Soft

Cascades HardCascades Hard

Cascades SoftCascades Soft

Klamath HardKlamath Hard

Klamath SoftKlamath Soft

From May and Gresswell (2004) Geomorphology 57:135-149

1998 1999

2000 2001

0 1 km

The H’s Ride Again…The H’s Ride Again…

•• HatcheriesHatcheries

•• HydropowerHydropower

• Habitat

The H’s Ride Again…

• Hatcheries

• Hydropower

• Habitat

•• HarvestHarvest

A Fifth H?A Fifth H?

HypocrisyHypocrisy

Adapted from Currens 1997

Just Do It!Just Do It!