Salmon recovery does not just mean more fish - PowerPoint PPT Presentation

About This Presentation
Title:

Salmon recovery does not just mean more fish

Description:

Rationale - Provides flexibility to persist in the presence of short- and long ... Definition - The geographic distribution of fish ... – PowerPoint PPT presentation

Number of Views:20
Avg rating:3.0/5.0
Slides: 15
Provided by: maryr161
Category:

less

Transcript and Presenter's Notes

Title: Salmon recovery does not just mean more fish


1
  • Salmon recovery does not just mean more fish
  • Management decisions are driven by politics
    logisticsscience can only contribute if we
    provide technically defensible options that
    include bounds of certainty

2
  • Using ecology to help solve conservation
    problems informing salmon recovery
  • Identifying population structure
  • Estimating risk of extinction
  • Prioritizing management actions to help the fish

Goals
How to achieve goals?
3
Technical needs for informing recovery planning
  • Identify
  • population viability criteria,
  • ESU viability criteria.
  • Determine causes of declines
  • Offer technical tools to explore alternative
    routes to achieving recovery goals and how to
    document progress

4
Recovery goals include four components 1)
abundance 2) productivity 3) diversity 4)
spatial structure
5
Diversity Definition - Variation in
characteristics of fish (e.g. age composition,
spawn timing, migration pathways, genetic
composition.) Rationale - Provides flexibility to
persist in the presence of short- and long-term
variation in the environment.
6
Spatial Structure Definition - The geographic
distribution of fish Rationale - Widely
distributed population spreads risk
7
  • Identify
  • population viability criteria,
  • ESU viability criteria.
  • Determine causes of declines
  • Offer technical tools to explore alternative
    routes to achieving recovery goals and how to
    document progress

8
What actions are needed to achieve salmon
recovery?
  • The role of science is to create technically
    defensible options to answer this question

9
Achieving needed improvements
  • Habitat
  • Harvest
  • Hatcheries
  • Hydropower
  • Ocean and climate

10
(No Transcript)
11
Habitat fixes conceptual overview of watershed
function
  • Landscape processes and land use affect habitat
  • Habitat affects abundance, productivity, spatial
    distribution and diversity of salmon

12
Habitat-related questions for recovery planning
  • Where have habitat-forming processes been altered
    and resulted in habitat loss or reduction in
    quality?
  • How have reductions in the amount or quality of
    habitat altered the status (abundance,
    productivity, diversity, spatial structure) of
    listed salmon?
  • What (alternative sets of) restoration or
    protection actions are necessary for recovery in
    each watershed?

13
Ocean conditions, climate change, rate of human
development, etc.
14
(No Transcript)
Write a Comment
User Comments (0)
About PowerShow.com