Restoration Objectives Flashcards
According to Woolsey, what are the 5 stages of river restoration
Strategic planning, preliminary survey, project planning, execution, utilization
what base line information might you want to get out of a baseline survey
water qual, geomorphology, landscape, vegetation, invertebrates, fish, birds, mammals, public perception, aspiratrions
what objectives need to be set before a project
specific objectives to that project
what sort of things might we need to know about a site
space, past habitats, current pressures
what analysis may we perform if looking at habitats for fish
limiting factor analysis
why would we use limiting factor analysis for fish
fish react differently to change in their different life cycles
what changes in terms of fish life cycle development between species
may stay for longer at different stages
what questions might you ask at the start of preliminary survey
what is the potential for site recovery, what will limit revovery, what are we aiming towards
in what ways might macro invertebrate colonise an area
drift, upward hyporheic migration, ariel dispersal, other organisms carrying them
what is crucial in colonisation from upstream sites
that good upstream sites are there in the first place
why will fauna colonise an area
need to choose to live their, must be attractive
what is important to note after the first initial colonisation of a restored habitat
sucession, community will change
what happens if there are good spawning gravels but no food
lots of fry, but they don’t grow to parr
what may negatively impact spawning gravels
over widened rivers, high siltation, bed disturbance
what did woolsely do in order to try and determine success
49 indicator guidelines in report, able to monitor specific changes
what did Gregory say about river habitats
various physical chemical and biological processes shape river habitats and distribution of biota
what option is there to supply upstream reaches with fish
re stocking
what sill decrease siltation
buffer zones
what might be required for taget setting
modelling
what limiting factors might kingfishers and water voles have
may have ample food, but need nesting a burrowing sites
what other species can colonise downstream
macro phytes
what are the functional biotic indicators
keystone species, species equilibrium, trophic equilibrium,production
what is important when thinking about trophic equilibrium
are there all of the trophic groups
what are the structural biotic factors
density, speices richness, diversity, similarity, indicator, keystone species
what might be a typical river keystone species
brown trout
what do we derive the endpoints from
similar sites, or pre disturbed state
what are the abiotic factors indicators
water quality and habitat quality
when do we go back and measure after we have set endpoints
depends on the scheme and what work was done, eg channel modifications might take over 10 years to show effect
why might density be a bad thing
lots of one species, bad diversity
what do the RRC use to decide goals in resoration
RRC decision tree
what river did woolsely do her study
thur switzerland
what did woosely use to measure success
indicator values
how were woolseys indicators spit up
direct and indirect
what might stop restoration on a salmonid river
need to restore between 16th june 20th october
what cost analysis might you do after a project
cost benefit analysis
how might you monitor a project after it has been completed
biological monitoring
what groups can be used for monitoring
bacteria, protozoa, algae, macroinverts, macro phytes, fish
