FORUM: Restoration of Stream Habitats in the Western United States: Restoration as Reexpression of Habitat Capacity

/ Ecological restoration is increasingly invoked as a tool for the maintenance and regeneration of biodiversity. Yet the conceptual foundations and assumptions underlying many restoration management activities are frequently unclear or unstated. Unforeseen, undesirable consequences of restoration activities may emerge as a result. A general conceptual framework for restoration is needed to better accommodate dynamic habitat systems and evolving biota in restoration strategies. A preliminary framework for stream habitat restoration emphasizing stream habitat-biota development is proposed. As developing systems, streams and stream biota exhibit temporal behaviors that change with stream environments. Underlying the dynamic development of streams is potential capacity. Streams express this capacity as an array of habitats over time and across the landscape. Human land uses in the western United States have rapidly altered aquatic habitats and the processes that shape habitat. As a result, the diversity of native fishes and their habitats has been suppressed. Restoration is fundamentally about allowing stream systems to reexpress their capacities. Several steps are provided to guide stream restoration activities. Key tasks include: identification of the historic patterns of habitat development; identification of developmental constraints; relief of those constraints; classification of sensitive, critical, or refuge habitats; protection of the developmental diversity that remains; and monitoring of biotic responses to habitat development. KEY WORDS: Stream habitat; Stream biota; System capacity; System development; Restoration; Classification

[1]  J. Lynch,et al.  Battle Against Extinction: Native Fish Management in the American West , 1991 .

[2]  J. Hewlett,et al.  STREAM TEMPERATURE UNDER AN INADEQUATE BUFFER STRIP IN THE SOUTHEAST PIEDMONT , 1982 .

[3]  M. Westoby,et al.  Opportunistic management for rangelands not at equilibrium. , 1989 .

[4]  C. Frissell,et al.  Incidence and Causes of Physical Failure of Artificial Habitat Structures in Streams of Western Oregon and Washington , 1992 .

[5]  Val Crispin,et al.  Changes in Instream Habitat, Large Woody Debris, and Salmon Habitat after the Restructuring of a Coastal Oregon Stream , 1993 .

[6]  E. Taylor.  A review of local adaptation in Salmonidac, with particular reference to Pacific and Atlantic salmon , 1991 .

[7]  C. Frissell,et al.  A hierarchical framework for stream habitat classification: Viewing streams in a watershed context , 1986 .

[8]  James R. Sedell,et al.  Importance of streamside forests to large rivers: The isolation of the Willamette River, Oregon, U. S. A., from its floodplain by snagging and streamside forest removal: With 2 figures and 1 table in the text , 1984 .

[9]  C. S. Holling.  Resilience of ecosystems: local surprise and global change. , 1985 .

[10]  N. Poff,et al.  Physical habitat template of lotic systems: Recovery in the context of historical pattern of spatiotemporal heterogeneity , 1990 .

[11]  A. Lind,et al.  Implications of fish habitat improvement structures for other stream vertebrates , 1992 .

[12]  J. Goering,et al.  Recycling of marine elements transported into freshwater systems by anadromous salmon: With 4 figures and 3 tables in the text , 1988 .

[13]  M. Wolman,et al.  Relative scales of time and effectiveness of climate in watershed geomorphology , 1978 .

[14]  P. Moyle,et al.  Loss of Biodiversity in Aquatic Ecosystems: Evidence from Fish Faunas , 1992 .

[15]  R. Gresswell,et al.  Life-history organization of Yellowstone cutthroat trout (Oncorhynchus clarki bouvieri) in Yellowstone Lake , 1994 .

[16]  C. Young,et al.  Impact of flooding in a Sonoran desert stream, including elimination of an endangered fish population ( Poeciliopsis o. occidentalis, Poeciliidae. , 1981 .

[17]  R. Noss.  Indicators for Monitoring Biodiversity: A Hierarchical Approach , 1990 .

[18]  T. R. E. Southwood,et al.  HABITAT, THE TEMPLET FOR ECOLOGICAL STRATEGIES? , 1977 .

[19]  G. Niemi,et al.  Recovery of temperate-stream fish communities from disturbance: A review of case studies and synthesis of theory , 1992 .

[20]  J. Ward,et al.  The Four-Dimensional Nature of Lotic Ecosystems , 1989, Journal of the North American Benthological Society.

[21]  P. J. Boer,et al.  Spreading of risk and stabilization of animal numbers , 1968 .

[22]  M Allen,et al.  Conceptual frameworks and the philosophical foundations of general living systems theory. , 1979, Behavioral science.

[23]  Hiram W. Li,et al.  Influence of Habitat Complexity on Resistance to Flooding and Resilience of Stream Fish Assemblages , 1992 .

[24]  Joseph L. Ebersole,et al.  A Resource in Crisis: Changing the Measure of Salmon Management , 1997 .

[25]  P. Moyle,et al.  Invasion Resistance to Introduced Species by a Native Assemblage of California Stream Fishes. , 1993, Ecological applications : a publication of the Ecological Society of America.

[26]  S. Schumm.  Geomorphic thresholds: the concept and its applications' , 1979 .

[27]  J. Stanford,et al.  Management of Aquatic Resources in Large Catchments: Recognizing Interactions Between Ecosystem Connectivity and Environmental Disturbance , 1992 .

[28]  R. Hughes,et al.  A regional framework for establishing recovery criteria , 1990 .

[29]  W. Junk.  The flood pulse concept in river-floodplain systems , 1989 .

[30]  W. Graf.  Fluvial adjustments to the spread of tamarisk in the Colorado Plateau region , 1978 .

[31]  J. Karr,et al.  Interim protection for late-successional forests, fisheries, and watersheds: national forests east of the Cascade Crest, Oregon, and Washington , 1994 .

[32]  D. Patten,et al.  Response of a Sonoran riparian forest to a 10-year return flood , 1993 .

[33]  S. Leonard,et al.  Viewpoint: range site/ecological site information requirements for classification of riverine riparian ecosystems. , 1992 .

[34]  C. S. Holling.  Resilience and Stability of Ecological Systems , 1973 .

[35]  A. Dwight Baldwin,et al.  Beyond Preservation: Restoring and Inventing Landscapes , 1994 .

[36]  L. Fahrig,et al.  Connectivity is a vital element of landscape structure , 1993 .

[37]  W. Jordan,et al.  Ecological restoration as a strategy for conserving biological diversity , 1988 .

[38]  J. Kauffman,et al.  Ecological Approaches to Riparian Restoration in Northeast Oregon , 1995, Restoration & Management Notes.

[39]  J. Karr,et al.  Entering the watershed , 1993 .

[40]  C. Frissell,et al.  Topology of Extinction and Endangerment of Native Fishes in the Pacific Northwest and California (U.S.A.) , 1993 .

[41]  G. Minshall.  Stream Ecosystem Theory: A Global Perspective , 1988, Journal of the North American Benthological Society.

[42]  T. Beacham,et al.  Adaptive Variation in Body Size, Age, Morphology, Egg Size, and Developmental Biology of Chum Salmon (Oncorhynchus keta) in British Columbia , 1987 .

[43]  James D. Williams,et al.  Extinctions of North American Fishes During the past Century , 1989 .

[44]  S. Milton,et al.  A Conceptual Model of Arid Rangeland Degradation , 1994 .

[45]  David P. Larsen,et al.  Trout Distribution and Habitat in Relation to Geology and Geomorphology in the North Fork Humboldt River Drainage, Northeastern Nevada , 1992 .

[46]  G. Meffe.  Effects of Abiotic Disturbance on Coexistence of Predator-Prey Fish Species , 1984 .

[47]  Charles P. Hawkins,et al.  Role of refugia in recovery from disturbances: Modern fragmented and disconnected river systems , 1990 .

[48]  J. Stanford,et al.  The hyporheic habitat of river ecosystems , 1988, Nature.

[49]  R. Sparks,et al.  Disturbance and recovery of large floodplain rivers , 1990 .

[50]  J. Lichatowich,et al.  Pacific Salmon at the Crossroads: Stocks at Risk from California, Oregon, Idaho, and Washington , 1991 .

[51]  F. Swanson,et al.  An Ecosystem Perspective of Riparian ZonesFocus on links between land and water , 1991 .

[52]  G. Meffe.  Techno‐Arrogance and Halfway Technologies: Salmon Hatcheries on the Pacific Coast of North America , 1992 .

[53]  S. Rood,et al.  Collapse of riparian poplar forests downstream from dams in western prairies: Probable causes and prospects for mitigation , 1990 .

[54]  C. Armour,et al.  Position statement on the effects of livestock grazing on riparian and stream ecosystems , 1991 .

[55]  D. Houston,et al.  Fate of Coho Salmon (Oncorhynchus kisutch) Carcasses in Spawning Streams , 1989 .

[56]  H. Regier,et al.  Ecosystem Science for the Great Lakes: Perspectives on Degradaiive and Rehabilitative Transformations , 1987 .

[57]  M. McHenry,et al.  Changes in Salmon Spawning and Rearing Habitat from Increased Delivery of Fine Sediment to the South Fork Salmon River, Idaho , 1989 .

[58]  James A. Lichatowich,et al.  An Approach to the Diagnosis and Treatment of Depleted Pacific Salmon Populations in Pacific Northwest Watersheds , 1995 .

[59]  P. Lawson,et al.  Cycles in Ocean Productivity, Trends in Habitat Quality, and the Restoration of Salmon Runs in Oregon , 1993 .