Glendon Photo Essay: Best moment at YU

After I finished class, my best friend Nick picked me up at the Keele campus and off we drove to the Glendon campus for our field assignment. As it was not winter yet, we had the chance to climb up trees and logs to get a better overview of the area. Well,  I was mostly climbing around due to my parkour background. We discovered something interesting later on, thanks to my antics!

glendon-campus-assignment

From the above picture, highlighted is our assigned segment (Segment #3)

As Nick was hitting the gym hard, we had to eat before we could actually start ‘working’. On our way down to our assigned segment, we were amazed by the scenery that unfolded before us.

20161117_140858

On our way to our assigned segment.

However, their was no trail to get to the river for our segment. We had to make our way through trees and getting small cuts along the way.

img_1867

Above is our ‘entrance’ to our river segment.

We started from the West side and made our way towards the east while documenting the riverbank.img_1875

Above shows the west side of our stretch, which was already concerning. There was a big pile up of tree debris and man-made products were thrown in there. For example, on the right side of the picture above, we can see a ‘green dinosaur’ on one tree log.

img_1876

img_1877

Severe Erosion

img_1879

Debris

What most likely occurred here was erosion due to slumping of the river bank. Erosion of river bank occurs mainly by 2 processes: Corrasion (erosion due to breaking waves) and slumping (Hooke, 1979). As there is no significant wave here, slumping caused the pictured erosion. A study by Wolman (in 1959) also discovered that erosion occured mostly in winter month, due to increased moisture in the soil and crystallization of ice.  We can see that roots are sticking out from the side of the eroded wall and this may have slowed down the erosion. The fences inside were probably up to restrict access but fell inside later on.

img_1880

These debris reduced the water flow from the stream considerably, as we will see later on. However, wood debris are important as they serve as nutrients pool and store carbon and nitrogen which can be used by organisms in that environment later on (Robertson et al., 1999).

img_1883img_1895

img_1899

Start of our segment-West side

Above is the start of our segment, from the West side. We can see that the stream flow is normal without any hindrance.

img_1903

Slumping on other side (North side) of the bank

img_1907

img_1915

Wood debris on (south side) on the bank

img_1919

Upstream view, before the debris

Above is a full view of upstream our segment, before and including the debris.As we can see on the left (North side),  the river bank is slumping.

img_1921

img_1923

Large portion of the area (south side) covered by debris, making it impossible for water to flow there.

img_1941

Severe Erosion

img_1943

Erosion

img_1954

Considerably reduced water flow: Downstream of the debris and blockade (looking at the East side)

img_1959

Immediately downstream of the debris (East side)

img_1969

img_1973

On the left (North Side), the river bank seems to be man-made (felt and looked like macadam texture)

img_1976

Slumping observed

img_1986

Looking downstream (east side), 10 m after the debris

img_1989

Downstream the debris, looking at the debris (looking at the north side) on the top half of the picture

img_1992

A closer look at the river bank (on the north side), very similar to macadam

img_2009

View of downstream the debris (view from up a tree)

img_2014

Looking downstream

img_2023

Looking upstream. The macadam segment went on for about 50 m, downstream of the debris

img_2006

Me looking at the river bank and analyzing it!

The picture above provides context to the picture below. While up a tree, I discovered something interesting tucked inside a tree crevice. (Forget that I nearly slipped and fell into the river here!)

img_2037

A skull!!!

That’s right, we found a skull! With the help of Dr. Dawn and her husband, Nick and I identified a coyote skull.

img_2045

80 m downstream the river, looking at the north side

img_2047

80 m downstream, looking upstream (West side)

img_2051

80 m downstream the debris, slumping can be seen on the north side of the river nut no macadam was observed.

img_2073

Logs conveniently present to allow me to climb on it and take a picture of the river.

img_2079

100m downstream: upstream view of the river from its center (obtained by standing on the above log). Slumping can be observed on the right (north side) whereas the left side (south side) shows lateral erosion.

img_2084

On the log, preparing to take pictures!

In conclusion, the start of our segment had a large number of debris that were concerning. Walking down the river, we observed slumping on  the north side of the river (banks) but lateral erosion on the south side of the river (bank). Awareness has been raised concerning the issues in Don River by http://paddlethedon.ca/. Hopefully, the above pictures and that of my partner (Glendon Adventures: Diving into the river bank (literally!)) can be used to help restore this beautiful stream.

As a final note, here is a picture of Nick and I, with only me on the log as Nick was a bit scared.

img_2087

Posing on the Don River!!

References:

Hooke JM. 1979. An Analysis of the Processes of River Bank Erosion. Journal of Hydrology. 42: 39-62.

Robertson AI, Bunn SE, Boon PI, Walker KF. 1999. Sources, sinks and transformations of organic carbon in Australian floodplain rivers. Mar. Freshwater Res. 50: 813–829. http://dx.doi.org/10.1071/MF99112.

Wolman MG. 1959. Factors influencing erosion of a cohesive riverbank. American Journal of Science. 257: 204-216

Mohammad Arshad Imrit

Advertisements
This entry was posted in Uncategorized. Bookmark the permalink.

One Response to Glendon Photo Essay: Best moment at YU

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s