Presentation is loading. Please wait.

Presentation is loading. Please wait.

Bull Trout Recovery & Watershed Restoration in the Clark Fork River Basin.

Similar presentations


Presentation on theme: "Bull Trout Recovery & Watershed Restoration in the Clark Fork River Basin."— Presentation transcript:

1

2 Bull Trout Recovery & Watershed Restoration in the Clark Fork River Basin

3

4 Bull Trout Salvelinus confluentus

5

6

7 How to Identify Bull Trout

8 Juvenile Bull Trout

9

10 Bull Trout Life History Forms Fluvial- grow large in a river & migrate to spawn in small stream Adfluvial- grow large in a lake or reservoir & migrate to spawn in small stream Resident- spend entire life in one stream Anadromous- grow large in saltwater & migrate to spawn in freshwater stream

11 Bull Trout Life Cycle

12

13

14

15

16

17 The Five Cs of Bull Trout Habitat Cold Clean Complex Connected Comprehensive

18 Cold Water Bull Trout require colder water than other native fish Ideal stream temperature is < 58 degrees F. and 48 degrees F. or lower for spawning and rearing habitats

19

20 Clean Water Bull Trout Require Water Free of Excessive Fine Sediment Loads Fine sediments < 6.35 mm should not be more than 20% of the streambed material in spawning areas Higher sediment levels severely reduce fry emergence and reproductive success

21

22 Complex Habitat Bull Trout stream habitat includes: Deep pools Riffles Undercut banks & overhanging vegetation Large woody debris & rocks in the stream

23

24 Connected Bull Trout require habitat connectivity in order to maintain the migratory life history form and genetic variation Blockages to historic migrations must be addressed including dams, water diversions, thermal barriers & road culverts

25 Comprehensive Recovery of Bull Trout will require a comprehensive approach addressing multiple major watersheds in the Northern Rockies and Pacific Northwest Restoring Bull Trout to some areas of historically occupied habitat is necessary

26 Indicator Species Because of their unique habitat needs and wide range, Bull Trout are known as an “indicator species” Bull Trout are monitored to track the health of watersheds and water quality A species with a wide range & special habitat needs are also called “umbrella species.” By protecting them, hundreds of other species with lesser needs can also be protected under the habitat “umbrella.”

27 END PART I

28 Current Status & Distribution of Bull Trout Bull Trout were listed as a Threatened Species under the federal Endangered Species Act in 1998 Bull Trout distribution is now less than 50% of its historic range and a fraction of its former numbers Few genetically viable populations (> 1,000 adults) remain

29 Historic & Current Bull Trout Distribution Area

30 Bull Trout Distribution & Core Watersheds in Montana

31 Status of Bull Trout Populations According to a survey of 102 Bull Trout populations in the Columbia River Basin (U.S. Fish & Wildlife Service 2003)- 13.7% were found to be extirpated 22.5% were declining 23.5% had an unknown trend but half are from populations described as “rare” or “uncommon” 33.3% stable, but most are very small populations 5.9% were increasing

32 Annual Redd Counts are Used to Track Bull Trout Populations Bull Trout females excavate a nesting area with their tails which is called a redd. Biologists count these redds each Fall to track population trends and spawning success.

33 Bull Trout Viability A viable population is one that is large enough to maintain the population’s genetic variation indefinitely Two leading experts, Dr. Bruce Rieman with the U.S. Forest Service and Dr. Fred Allendorf with the University of Montana, report a minimum of 1,000 adult Bull Trout (approximately 500 redds) each year are necessary to ensure viability A viable population could be one population >1,000 adults, or 10 sub-populations of 100 adults that are connected as a “meta-population” or any combination that adds up to 1,000, so long as they are connected

34 Major Threats to Bull Trout Survival & Recovery Dams Improper Mining Practices Improper Logging Practices Improper Grazing Practices Roads & Inadequate Culverts Exotic Fish Species Climate Change

35 Dams Block historic migrations Fragment bull trout populations into genetically non-viable units

36 Improper Mining Improper mining practices can damage water quality by introducing heavy metals into the streams Inadequate cleanup can result in continuous degradation of water quality

37 Improper Logging Practices Increases fine sediment loads in streams Removes shade and damages riparian areas

38 Improper Grazing Practices Damages water quality by- Trampling banks Removing riparian vegetation Widening streams and reducing the depth Leads to increases in water temperatures Can divert water so that native fish do not have adequate water flows

39

40

41 Roads & Inadequate Culverts

42 Non-Native Fish Can directly predate on bull trout and other native fish Can out-compete bull trout for habitat and food Non-native brook trout can interbreed with bull trout, creating sterile offspring

43 Homesite Development

44 END PART II

45 Bull Trout Recovery Recovery is defined under the Endangered Species Act as “the use of all methods and procedures which are necessary to bring any endangered species or threatened species to the point at which the measures provided under this Act are no longer necessary.“

46 Watershed Restoration: The 3 Rs Remediation Restoration Redevelopment

47 Recovery & Restoration Actions Identify Important Habitat Identify Specific Problems Prioritize Recovery Actions Implement Recovery Actions

48

49 Critical Habitat The U.S. Fish & Wildlife Service has proposed designation of critical habitat for Bull Trout Critical habitat is defined as “ the specific area within the geographical area occupied by a species… on which are found those biological features (I) essential to the conservation of the species and (II) which may require special management considerations or protection: and (ii) specific areas outside the geographical area occupied by a species…upon a determination that such areas are essential for the conservation of the species.

50

51 Cleanup of Mining Wastes

52 Historic Project to Remove Milltown Dam

53 Blackfoot River Clark Fork River Remove Milltown Dam Build a temporary bypass channel for the Clark Fork River Remove contaminated sediments Construct a new, natural channel for the river

54 REMEDIATION Roads Flood Berm Bypass Channel Sediment Stockpiling & Removal Diversion Dike Spillway removal Powerhouse removal 6 7 3 4 1 2 5

55

56

57

58

59 Fish Passage Fish passage allows Bull trout and other native fish to migrate to natal spawning grounds Re-connects genetically isolated subpopulations Can be accomplished through complete dam removal or by constructing a passage facility

60

61

62

63 Restoring Riparian Areas Planting Native Vegetation Fencing Cattle Out of Riparian Areas

64

65

66

67 Before & After Culvert Repair

68 Fish Screens Save Native Fish

69 Negotiate In-Stream Flows For Native Trout

70 Creating Pool Habitat by Putting Large Woody Debris in the Stream

71

72

73

74 Education is the Key to Watershed Restoration

75

76 Clean Water Supports Many Uses and Native Plants & Wildlife

77

78 Important Links to Websites on Bull Trout & Watershed Restoration www.cfwep.org www.fws.gov/pacific/bulltrout/ http://fwp.mt.gov/education/fishingeducation/ www.streamnet.org/

79 Special Thanks to the Agencies & Individuals Who Provided Graphic Images Ladd Knotek, Montana Department of Fish, Wildlife & Parks Montana Dept. of Justice, Natural Resource Damage Program U.S. Environmental Protection Agency U.S. Forest Service Clark Fork Watershed Education Program Joseph Tomelleri Mark Alan Wilson Peter Metcalf

80 This Program Was Designed & Produced for the Clark Fork Watershed Education Program by: Bader Consulting, Missoula, Montana 406.721.4835; mbader@montana.commbader@montana.com © 2007 ALL RIGHTS RESERVED Do Not Duplicate Without Permission


Download ppt "Bull Trout Recovery & Watershed Restoration in the Clark Fork River Basin."

Similar presentations


Ads by Google