Glengonnar Water Field Results and What Next.....

Glengonnar WaterField Results and What Next....

Mouse WaterCamps WaterGlengonnar Water

Land Use & Geography

Slope11.13 km from Source to confluence with River Clyde

0 2 4 6 8 10 120

50100150200250300350400450

Glengonnar Water

Distance From Confluence with River Clyde (km)

Heig

ht (m

)

0 2 4 6 8 10 12 14 16 18 20 22 24 260

100

200

300

400

500

600

Gradient Profiles

Camps WaterSeries2Glengonnar WaterMouse Water

Distance From Confluence with River Clyde (km)

Heig

ht (m

)

Land Use & Geography

• Need to consider– Land Use– Slope– Altitude– Rainfall– Water Use– Land Runoff

Data Gathered

• Fisheries Survey• Invertebrate Survey• Water Velocity• River Discharge• Substrate Size• Water Chemistry• Land Use• Geography

Water Chemistry

Water Velocity - Oranges• Timed how long it took for an orange to travel

10m

Water Velocity - Oranges

• Used equation: speed = distance ÷ time

Water Velocity – Flow Meter

• Recorded the number of revolutions per minute and converted using an equation

VelocityOrange vs Flow Meter

• Orange = 0.58m per second• Flow Meter = 0.25m per second

Are these comparable results??

NO!!!!

River Discharge

River Discharge - Results

Average River Discharge = 0.23m3s

Substrate Size

• Measured 100 random pieces of substrate• Average size 8.1 cm

Erosion, Transportation or Deposition

• Substrate = 8.1 cm

• Velocity = 0.25 cm/sec

We need to consider all the different sized

substrates and flow changes

Invertebrate Data

• 3 min kick sample• Count how many families present in river =

Number of Taxa

Invertebrate Data

• 3 min kick sample• Count how many families present in river =

Number of Taxa• Calculate the BMWP (Biological Monitoring

Working Party) score

(10x6)+ (7x4)+ 6 + (5x3) + 4 + 1

= 114

These scores are based on tolerance to organic pollution

Mayfly - Heptageniidae least tolerant (more likely to die)

Worm - Oligochaeta most tolerant – unlikely to die

Invertebrate Data

• 3 min kick sample• Count how many families present in river =

Number of Taxa• Calculate the BMWP (Biological Monitoring

Working Party) score • Calculate the ASPT (Average Score per Taxon)=

BMWP Score/Number of TAXA

114÷16 = 7.13

Invertebrate Data

• 3 min kick sample• Count how many families present in river =

Number of Taxa• Calculate the BMWP (Biological Monitoring

Working Party) score • Calculate the ASPT (Average Score per Taxon)=

BMWP Score/Number of TAXA• Compare our scores against expected scores

where no pollution existed (output from RIVPACS)

Invertebrate Results

• Site Taxa ÷ Expected Taxa= EQI Taxa16 ÷ 21 = 0.76

• Site ASPT÷ Expected ASPT= EQI ASPT7.13 ÷ 6.58 = 1.08

Invertebrate Results

Class DescriptionASPTEQI

TAXAEQI

A1 Excellent > 1.0 > 0.85

A2 Good > 0.9 > 0.70

B Fair > 0.77 > 0.55

C Poor > 0.50 > 0.30

DSeriously Polluted

< 0.50 < 0.30

• EQI Taxa = 0.76

• EQI ASPT = 1.08

Use lowest score Site = A2 Good

Fisheries Data

• 3 Run Depletion Fishing• Fish a measured area of river• Calculate a minimum estimate of fish density

per 100m2

Fisheries Results

Fisheries Results

Fisheries Results

• Number of Trout Caught -23• Area Fished (m2) - 114• Brown Trout minimum estimate density per 100m2 =

20• Fry found at site – no• 19 fish had black tails

What is good habitat?• Good Bankside and instream

cover for fish to hide in• Holds banking together to

prevent erosion• Water depth – not too shallow or

deep

What is good habitat?

• Changes in flow type• Meandering nature

What is good habitat?

• Not all rivers are the same shape….upland rivers that are steep tend to be straighter and full of boulders and large cobbles.

What next?

• Examine your site results• Compare with a ‘perfect’ river• How is your site different?• How could it be improved?• Can it be improved?• Do you need to work with pupils from other classes?• Check out the website where all of the information for the

field results can be found.• Use Kidblog to talk to each other and ask questions• Email• Internet

Presentation

• A group from each site will present their findings to us

• Looking for you to highlight the biggest problems faced at your site.

• Date to be confirmed...June 2014.