Places In News: Lake Retba

25 Jan 2024

Context: 

Lake Retba is disappearing in Senegal. 

  • In this lake, only a few microscopic algae and bacteria are found. 

About Lake Retba

  • Lake Retba is better known as Lac Rose or the pink lake.

Lake Retba

  • Reason for Pink Color: The pink color of the lake is due to the presence of halophilic green algae, specifically Dunaliella salina, containing red pigments.
  • Source of Water: The lake Retba is isolated from the sea by sand dunes. Its fresh water comes from the seasonal water table in the dunes, which are higher than the lake. 
    • Thus the sea provides most of the lake’s water and all of its salt.
  • It is situated approximately 35 km from Dakar, Senegal.

Challenges at Senegal’s Pink Lake

  • Salt accumulation is the major problem for the pink lake. 
The World Health Organization (WHO) deems water potable when nitrate levels are below 50 mg/l.
  • Release of toxic substances from nearby industries, hotels, and tourism can bring harmful chemicals into the water, impacting the lake’s overall ecosystem. 
  • Uncontrolled tourism can put a strain on the ecosystem which can cause pollution from boats and disturb wildlife.
  • Infrastructure projects or land development near the lake can disrupt natural water flow and threaten surrounding dunes, contributing to the water balance.
  • Excessive sand extraction and exploitation of surrounding areas can destabilize the lake’s delicate environment.
Also Read: Indian Lakes: Water Ecosystem, Origins, And Challenges

 

News Source: DownToEarth

Must Read
NCERT Notes For UPSC UPSC Daily Current Affairs
UPSC Blogs UPSC Daily Editorials
Daily Current Affairs Quiz Daily Main Answer Writing
UPSC Mains Previous Year Papers UPSC Test Series 2024

 

Archive Calendar

Mon Tue Wed Thu Fri Sat Sun
 123
45678910
11121314151617
18192021222324
25262728293031

Need help preparing for UPSC or State PSCs?

Connect with our experts to get free counselling & start preparing

Know about Physics Wallah

Physics Wallah is an Indian online education platform, that provides accessible & comprehensive learning experiences to students of classes 6 to 12 and those preparing for JEE and NEET exams. We also provide extensive NCERT solutions, sample papers, NEET, JEE Mains, BITSAT previous year papers, which makes us a one-stop solution for all resources. Physics Wallah also caters to over 3.5 million registered students and over 78 lakh+ Youtube subscribers with 4.8 rating on its app.

We Stand Out because

We successfully provide students with intensive courses by India's qualified & experienced faculties. PW strives to make the learning experience comprehensive and accessible for students of all sections of society. We believe in empowering every single student who couldn't dream of a good career in engineering and medical field earlier.

Our Key Focus Areas

Physics Wallah’s main focus is to create accessible learning experiences for students all over India. With courses like Lakshya, Udaan, Arjuna & many others, we have been able to provide a ready solution for lakhs of aspirants. From providing Chemistry, Maths, Physics formulae to giving e-books of eminent authors, PW aims to provide reliable solutions for student prep.

What Makes Us Different

Physics Wallah strives to develop a comprehensive pedagogical structure for students, where they get a state-of-the-art learning experience with study material and resources. Apart from catering students preparing for JEE Mains and NEET, PW also provides study material for each state board like Uttar Pradesh, Bihar, and others.

Aiming for UPSC?

Download Our App

# #
Quick Revise Now !
AVAILABLE FOR DOWNLOAD SOON
UDAAN PRELIMS WALLAH
Comprehensive coverage with a concise format
Integration of PYQ within the booklet
Designed as per recent trends of Prelims questions
हिंदी में भी उपलब्ध
Quick Revise Now !
UDAAN PRELIMS WALLAH
Comprehensive coverage with a concise format
Integration of PYQ within the booklet
Designed as per recent trends of Prelims questions
हिंदी में भी उपलब्ध

<div class="new-fform">






    </div>

    Subscribe our Newsletter
    Sign up now for our exclusive newsletter and be the first to know about our latest Initiatives, Quality Content, and much more.
    *Promise! We won't spam you.
    Yes! I want to Subscribe.