The Perturbation of Mangla Watershed Ecosystem in Pakistan Due to Hydrological Alteration

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F23%3A97291" target="_blank" >RIV/60460709:41330/23:97291 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3390/w15040656" target="_blank" >http://dx.doi.org/10.3390/w15040656</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/w15040656" target="_blank" >10.3390/w15040656</a>

Result language

angličtina

Original language name

The Perturbation of Mangla Watershed Ecosystem in Pakistan Due to Hydrological Alteration

Original language description

Hydrological regimes influence an aquatic ecosystem's biotic composition, structure, and functioning. But construction of dams or anthropogenic activities substantially alter the hydrologic regimes. In this study, we used a method named as the Indicators of Hydrologic Alteration to examine the degree of hydrologic alteration at seven flow gauge stations in the Mangla watershed. The assessment of alteration is carried out according to the Range of Variability (RVA). This method relies on analyzing hydrologic data obtained from existing measurement points (e.g., stream gauges) within an ecosystem or model-generated data. We used 33 parameters categorized into 5 groups based on magnitude, duration, frequency, timing, and rate of change to characterize hydrologic variation within a year statistically. We then examine the hydrologic perturbations by comparing the measure of central tendency and dispersion for each parameter between the pre-impact (1967-1994) and post-impact (1995-2014) periods. The results show that within the Mangla watershed, the high alteration was noted in the magnitude of monthly flows and extreme flows at Azad Pattan, Gari Habibullah, Palote and at Muzafarabad stations. The flow at Domel and Kohala stations are found in low hydrological alteration among all groups of indicators. The study indicates that Neelum Basin at Muzaffarabad has significantly high alteration with maximum negative values. On the other hand, a high frequency of alteration observed in the monthly flows and extreme water conditions. Overall, a moderate alteration is observed in the whole watershed, which may produce adverse effects on the aquatic ecosystem of the Mangla watershed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10501 - Hydrology

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Water

ISSN

0310-0367

e-ISSN

0310-0367

Volume of the periodical

15

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

16

Pages from-to

1-16

UT code for WoS article

000942007200001

EID of the result in the Scopus database

2-s2.0-85149234959