Coarse-scale riverine process domains of Pacific Northwest drainage basins
Download
1 / 14

Coarse-scale riverine process domains of Pacific Northwest drainage basins - PowerPoint PPT Presentation


  • 105 Views
  • Uploaded on

Coarse-scale riverine process domains of Pacific Northwest drainage basins. Montgomery, David R. 1999. Process Domains and the River Continuum. J. Am. Water Res. Assoc. Vol. 35, no. 2. Process Domains Conceptual Model. Headwater Reaches Colluvial Transfer Reaches Bedrock Cascade

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Coarse-scale riverine process domains of Pacific Northwest drainage basins' - keita


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Coarse-scale riverine process domains of Pacific Northwest drainage basins

Montgomery, David R. 1999. Process Domains and the River Continuum. J. Am. Water Res. Assoc. Vol. 35, no. 2.


Process Domains Conceptual Model drainage basins

  • Headwater Reaches

  • Colluvial

  • Transfer Reaches

  • Bedrock

  • Cascade

  • Step-pool

  • Depositional Reaches

  • Plane-bed

  • Pool-riffle

  • Regime

  • Braided

Montgomery 1999


Carl Sammons drainage basins

Process Domains and the Aquatic and Riparian Herpetofauna: An Ecogeographic Study of the Mattole Watershed

Hartwell H. Welsh, Jr. and Garth R. Hodgson

Redwood Sciences Laboratory, Arcata, California


Kilometers drainage basins

0 2 4 6

Geomorphic Process Domains of the Mattole

Mattole Watershed

Longitudinal profiles

Cascade

Step pool

Plane bed

Pool riffle

1

Petrolia

Honeydew

2

3

Ettersburg

Channel morph.

Type

1 Cascade

2 Step pool

3 Plane bed

4 Pool riffle

4

Whitethorn

N

Shelter

Cove


NMS2 drainage basins

I

II

III

IV

Reach Types based on Non-metric Multidimensional Scaling Ordination

  • Variables used in NMS ordination:

  • Sub-basin area

  • Roughness

  • Slope

  • Substrates

I

II

NMS2 groups

Reach Type I

Reach Type II

Reach Type III

Reach Type IV

III

IV


NMS2 drainage basins

I

II

III

IV


Species Distribution by Process Domains drainage basins

Amphibian richness

Rough-skinned newt

Coastal giant salamander

I II III IV

Channel Types

I II III IV

Channel Types

I II III IV

Channel Types

Tailed frog

S. torrent salamander

I II III IV

Channel Types

I II III IV

Channel Types


Water temperature drainage basins

Canopy closure

Water temperature (oC)

Canopy closure (%)

I II III IV

Channel types

I II III IV

Channel types

Key Differences Between Channel Types


Water Temperature niches of four species drainage basins

15.8

Coho

DITE

ASTR

RHVA

12.8

11.7

11.4

Water temperature (oC)

Water Temperature Realized Niches


The Stream Continuum Concept drainage basins

the network environment changes continuously and predictably

Abiotic gradients

Flow rate

Light

Water temperature

Water chemistry

Substrate composition

Larger in smaller streams

Biotic gradients

Bacteria

more in slower water

Primary producers

Phytoplankton and periphyton

Macroinvertebrates

Insects to crayfish

Vertebrates

Large rivers have more species


Tailed Frog drainage basins

Southern Torrent Salamander

Late Seral

Petrolia

Honeydew

Ettersburg

Pacific Ocean

Whitethorn

N

Shelter

Cove

km

0

1

2

3

4

5

Late-seral Forest in the Mattole in 1947 and 1997

1947

1997

Data from: Welsh, H. H. Jr., G. R. Hodgson, and A. J. Lind. 2005. Ecogeography of the herpetofauna of a Nothern California watershed: linking species patterns to landscape processes. Ecography, Vol. 28: 521-536.


Olson, D. H., P. D. Anderson, C. A Frissell, H. H. Welsh, Jr., D. F. Bradford. 2007. Biodiversity management approaches for stream-riparian areas: Perspectives for Pacific Northwest headwater forests, microclimates, and amphibians. Forest Ecology and Management 246: 81-107.


> 30 % Jr., D. F. Bradford. 2007. Biodiversity management approaches for stream-riparian areas: Perspectives for Pacific Northwest headwater forests, microclimates, and amphibians. Forest Ecology and Management 246: 81-107.


10 m Jr., D. F. Bradford. 2007. Biodiversity management approaches for stream-riparian areas: Perspectives for Pacific Northwest headwater forests, microclimates, and amphibians. Forest Ecology and Management 246: 81-107.


ad