New England Atlantic Salmon Programs DPS Delineations

Transcription

1 New England Atlantic Salmon Programs DPS Delineations (CA) Outer Bay of Fundy Gulf of Maine Central New England 6,000 5,000 4,000 3,000 2,000 1,000 GOM CNE LIS Long Island Sound Number of Atlantic Salmon

2 NEW ENGLAND SALMON RESOURCE NASCO Rivers Database Stock Category Number Lost 30 Maintained 6 Threatened With Loss 7 Unknown 2 Total 45 NO Fisheries Recreational or Commercial

3 THREATS 1) Low marine survival (estuaries and North Atlantic) related to 1) global climate change, 2) predation, 3) shift in ocean ecology. 2 SW Ocean Survival 1.40% 1.20% 1.00% 0.80% 0.60% 0.40% 0.20% 0.00% Smolt Year

4 2) Freshwater survival compromised by reduced habitat access and productivity, and altered thermal and hydrologic regimes (climate change and land use). Connections Conditions Communities

5 CONNECTIONS Reconnect corridors and ecological linkages

6 CONDITIONS Temperature and Hydrology Riparian Land Protection Purchase Easement Education Regulation

7 Temperature, Hydrology, Complexity Remediate Channel Alterations

8 Water Quality Maine rain is ~ ph 4.6 Stream buffering capacity varies Episodic low ph on many streams Meters Marine Mollusk Shell Additions >> Mark Whiting for Information

9 COMMUNITIES Restore Diadromous Fish Shad Smelt Alewife, Herring Eel Limit Non-native Fish Remove Spawners Educate to limit illegal Stocking Eliminate Stocking

10 HATCHERIES LIFE SUPPORT PREVENT EXTINCTION Maintaining genetic legacy Freshwater recruitment

11 Hatchery by Program Long Island Sound: Pawcatuck River, Connecticut River Hatcheries: CT State (1) CT Private (1), RI State (1) Connecticut River stock Fry stocking Central New England: Merrimack River, Saco River Hatcheries: USFWS (2) Private (1) Penobscot River stock Production and stocking end 2014 and 2015 Gulf of Maine: Androscoggin River to Dennys River Hatcheries: USFWS (2), Private (2), USDA (1) Seven river specific stocks All life stages (egg to adult) stocked Outer Bay of Fundy: Aroostook River, St Croix River Hatcheries: Private (1) St. John River stock Fry stocking

12 Hatchery Reared Broodstock Wild Juveniles (Captive) Young-of-year, parr and smolts collected from six Maine watersheds. Hatchery Juveniles (Domestic) Juveniles selected from production to broodstock (Domestic / Captive)

13 Sea-run Broodstock Sea-run returns collected at 1 st Dam Kelt 6 Egg Sources 2012 Families created are (can be) genetically characterized Millions of Eggs Sea Run Kelt Domestic Captive 0 LIS CNE GOM PROGRAM

14 Eyed Egg Planting 1,344,000 eggs were planted in 2012

15 Stocking 5,758,000 Fry 22,000 Parr ,000 Smolts

16 Stocking 5,097 Adults in 2012 Pre-spawn captive reared 257 in Dennys River Primary strategy change Fry to Adult stocking 640 in CNE Captive reared and sea run Remainder Post-spawn broodstock

17 Integrating Habitat & Hatchery Stock newly accessible streams (culvert replacements, log dam removals, fishways) Stock reaches with large wood additions Stock reaches with clam shell additions Adjust smolt stocking location following dam removals Don t stock reaches with natural reproduction

18 Program Goals PREVENT EXTINCTION MAINTAIN GENETIC LEGACY MAINTAIN SALMON IN FW COMMUNITY IMPROVE PRODUCTIVITY OF FW HABITAT RESTORE SELF SUSTAINING POPULATIONS Objectives Program specific: Juvenile abundance & distribution Smolt production Adult abundance & distribution

19 Returns to Traps Monitoring Adult Assessments Spawning Surveys Juvenile Assessments

20 Results of Management Egg planting vs spawning (returns or captive) YOY Parr Relative Ab bundance Relative Ab bundance E Eggs (21) Redds (44) Y E Eggs (19) Redds (70) Y

21 Results of Management Fry vs egg planting & spawning (returns or captive) Relative Abun ndance YOY c a b Relative Abu undance Parr c a b b No Fry (104) No Eggs N-N No Fry N-Y (66) Fry Y-N (63) Y-Y Eggs No Eggs Fry (2) Eggs No Fry (98) (98) No Eggs Eggs (48) Fry (61) (61) No Eggs Fry Eggs N-N No N-Y Fry (48) Y-N Y-Y (28)

22 Program Goals PREVENT EXTINCTION? MAINTAIN GENETIC LEGACY MAINTAIN SALMON IN FW COMMUNITY? IMPROVE PRODUCTIVITY OF FW HABITAT RESTORE SELF SUSTAINING POPULATIONS Program Specific Objectives:?? Juvenile abundance & distribution Adult abundance & distribution?? Genetic diversity Accessible Habitat