Figure 1

Figure 2
![River basin and location of the Aral Sea [Micklin 2007, modified].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_002.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=e217ca7aaea11a6fca8b7acfd9c3be85b541356968328fa84d852ea7aacdf415&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 3
![Changes in the water volume of the Aral Sea after I960 based on the observed and estimated values [Gaybullaev et al. 2012, modified]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_003.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=062eca9e398e21d582883cd5ebf7ed9a70c1e59dd517b9a4e74a7ecb94add096&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 4
![Disappearing of the Aral Sea after the hydrotechnical regulations of the Amu Darya and Syr Darya (white line, estimated waterline in I960; the situation in 2001 and 2014 in the satellite imagery) [www.earthobservatory.nasa.gov, photo by NASA]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_004.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=a09981eb4b43586972546cf0fdbd066548b6040cbbbe32c0eb5e482d5738005e&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 5
![Land mammals seeking shelter in shipwrecks in the area of the former Aral Sea, now the Aral Karakum Desert [(a) Micklin 2007, photo by P. Micklin; (b) www.fly4free.pl, photo by M. Pitcher]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_005.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=9f7f0ec5d3c171b9dc3b9c9c7969946c2e68266b928e8759aeb3736592733114&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 6
![Physico-geographical location of Hazaribagh [www.google.com/earth]. 1, Hazaribagh; 2, the Himalayas; 3, the Bay of Bengal.](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_006.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=c8fe211cb5628c16391c1c0715e346e84a5f9f17ce66e123d929d82efa109f13&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 7
![The contaminated Buriganga, the only river in Hazaribagh [Varene, Darblay 2012].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_007.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=10571b5b7b5f8ac9236e128a45ee322ab187673a4f2a67c25c6af70c9902d305&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 8
![The area of polymer waste concentration (1) in the northeast Pacific between Hawaii (2) and the western coast of the United States (3) [based on Moore et al. 2005 and www.google.com/earth].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_008.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=a65b5de55cf764c36acbb881de18301a7dce16e885eef34a3cf983a44e2ea2d6&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 9
![Plastic macrowaste found in the ocean (the northeast Pacific) [Sato 2014, photo by S. Lardeux].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_009.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=260b0e165f4aab325dc7b5bf5a01fcc54ac25518c48d7c53dbc9b2ddcc33064a&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 10
![Plastic waste in a dead seabird [Sato 2014],](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647269d0215d2f6c89dc7232/j_oszn-2018-0006_fig_010.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251206%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251206T163454Z&X-Amz-Expires=3600&X-Amz-Signature=46ed8e6f1ff65bbe41802639faa001e5796dfa75c0dcd6ccea4f3643fe958174&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Concentrations of selected metals in tannery sewage from Hazaribagh in comparison to the concentration limits (according to NEQS 2000) considered for directing sewage to inland waterways [Kabir et al_ 2017, modified]_
| Concentration [mg/L] Chromium [Cr] | Ferrum [Fe] | Lead [Pb] | |
|---|---|---|---|
| Sample 1 | 5,866.942 ± 1.02 | 1.37 ± 5.44 | 28.976 ± 6.68 |
| Sample 2 | 6,769.554 ± 1.59 | 108.556 ± 2.97 | 32.026 ± 6.92 |
| Sample 3 | 288.454 ± 1.87 | 98.292 ± 1.42 | 20.842 ± 4.88 |
| Sample 4 | 1,474.020 ± 4.99 | 14.26 ± 1.41 | 23.384 ± 2.53 |
| Sample 5 | 2,857.182 ± 3.23 | 41.952 ± 7.56 | 21.858 ± 2.33 |
| Sample 6 | 144.604 ± 2.21 | 64.392 ± 4.00 | 20.334 ± 2.50 |
| Sample 7 | 50.792 ± 1.22 | 23.57 ± 6.22 | 18.808 ± 4.09 |
| Sample 8 | 14.282 ± 1.17 | 30.732 ± 5.47 | 24.400 ± 1.21 |
| Sample 9 | 26.984 ± 6.57 | 19.512 ± 4.83 | 22.368 ± 5.68 |
| Standard acceptable limits for directing to inland waterways according to NEQS 2000 [www.elaw.org] NEQS 2000 [www.elaw.org] | 1.00 | 8.00 | 0.50 |
Average weight (kg) of marine waste (based on the size range) caught within 24 hours (22 November 2004) from three rivers in the southern California [Moore et al_ 2011]_
| Coyote Creek | San Gabriel River | Los Angeles River | Total | |||
|---|---|---|---|---|---|---|
| 1.0-4.75 mm | >4.75 mm | 1.0-4.75 mm | >4.75 mm | 1.0-4.75 mm | >4.75 mm | |
| 4.06 | 257.59 | 106.86 | 18,429.41 | 3,851.81 | 1,175.42 | 23,825.15 |