Ecologic Restoration and History Flashcards Preview

Plant Ecology > Ecologic Restoration and History > Flashcards

Flashcards in Ecologic Restoration and History Deck (25):
1

Describe conceptual model of a degraded ecosystem

Start: Original ecosystem --> Enhance
or
Degradation occurs --> Mitigate (minimize effects) or Restoration (active process)
Finish: Improved habitat

2

What are functional characteristics of ecosystems?

Ecosystem services
- Biodiversity
- Carbon Storage (Blue carbon in coastal systems)
- Food production
- Raw materials
- Waste treatment
- Nutrient filtration
- Erosion control
- Recreational uses

3

Structural characteristics of a coastal ecosystem

Intact marsh (high and low) and mudflat comprise estuary

4

The structure and function of coastal wetland systems are based on what drivers?

external drivers but also internal drivers

5

What are examples of external drivers in the structure and function of a coastal ecosystem?

Sea-level rise
Storm frequency and intensity
Local tides
Freshwater discharge
Precipitation
Surface Drainage
Sediment and nutrient input

6

What are examples of internal drivers in the structure and function of a coastal ecosystem?

Interrelationships between biological factors (microbial activity, herbivory, burrowing)
and
Microtopographic (accretion figure)

7

What are 4 examples of recuperation of a coastal ecosystem?

- Recovery
- Mitigation
- Restoration
- Enhancement

8

Example of Recovery in a coastal ecosystem

Discontinue mosquito control measures (cleaning drainage ditches and spraying Bti)

9

Example of Mitigation in a coastal ecosystem

allow gate on tidal control device to remain open to minimize its tidal control and go back to natural fluctuations

10

Examples of Restoration in a coastal ecosystem

Remove dykes, ditches and tidal gates to allow unrestricted sea water entry
Remove barriers that prevent tidal salt marshes from migrating inland with relative sea level rise

11

What happens when a salt marsh is prevented from migrating inland?

Loss of wetland and habit and associated ecosystem services
Migration inland is necessary with rising sea levels

12

Factors that contribute to soil accretion in a tidal salt marsh (diagram) and reason

Tidal salt marsh ecosystem can only function/survive if it can vertically accrete and move inland with sea level rise (climate change)

13

BACI

Before-After-Control-Impact

14

Mensuration

Natural experiment

15

BACI for IVBRP

Mensuration
Control: James and Sidney Islands
Impact: Allowing sea water into IVBRP

16

When did first silviculture planting occur in BC?

1930s

17

When did interest in restoring GO meadows begin?

Early 1990s on Vancouver Island

18

When was the Watershed Restoration Program created and where?

In 1995 by Forest Renewal BC (FRBC)

19

When was the BC chapter of Society for Ecological Restoration formed?

1999 and still active present day

20

GOERT

Garry Oak Ecosystem Recovery Team
- Established in 1999 and still active present day

21

GCC

Grasslands Conservation Council
- Established in 1999 and still active present day
- Bunchgrass communities in Okanagan (Pocket Deserts)
- Often developed into Vineyards

22

TERP

Terrestrial Ecosystem Restoration Program
- Launched in 2000 by FRBC
- No longer active

23

What is ecological restoration?

Fully restores the components and processes of a damaged ecosystem

24

What are possible restoration targets?

- Previous historical state
- Contemporary standard
- Desired future condition (ie Historical state cannot be achieved)

25

When and why does a restoration plan become a desired future condition vs. previous historical state?

When a historical state cannot be achieved because there is nothing left to restore
or
Historical state cannot be determined
or