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Subject: Environment

  • ‘Sea Snot’ outbreak in Turkey

    There has been growing environmental concern in Turkey over the accumulation of ‘sea snot’, a slimy layer of grey or green sludge in the country’s seas, which can cause considerable damage to the marine ecosystem.

    What is ‘Sea Snot’?

    • ‘Sea snot’ is marine mucilage that is formed when algae are overloaded with nutrients as a result of water pollution combined with the effects of climate change.
    • A ‘sea snot’ outbreak was first recorded in the country in 2007. Back then, it was also spotted in the Aegean Sea near Greece.
    • But the current outbreak in the Sea of Marmara is by far the biggest in the country’s history.
    • The nutrient overload occurs when algae feast on warm weather caused by global warming. Water pollution adds to the problem.
    • Environmental experts have said that the overproduction of phytoplankton caused by climate change and the uncontrolled dumping of household and industrial waste into the seas has led to the present crisis.

    Where has it been found?

    • Turkey’s Sea of Marmara, which connects the Black Sea to the Aegean Sea, has witnessed the largest outbreak of ‘sea snot’.
    • The sludge has also been spotted in the adjoining Black and Aegean seas.

    How badly can the crisis affect the marine ecosystem?

    • The growth of the mucilage, which floats upon the surface of the sea like brown phlegm, is posing a severe threat to the marine ecosystem of the country.
    • Divers have said that it has caused mass deaths among the fish population, and also killed other aquatic organisms such as corals and sponges.
    • The mucilage is now covering the surface of the sea and has also spread to 80-100 feet below the surface.
    • If unchecked, this can collapse to the bottom and cover the sea floor, causing major damage to the marine ecosystem.
    • Over a period of time, it could end up poisoning all aquatic life, including fishes, crabs, oysters, mussels and sea stars.

  • Anti-hail guns to mitigate hailstorms crop damage

    To help out horticulturists who face crop damage due to hailstorms, the Himachal Pradesh government will be testing the use of indigenously developed ‘anti-hail guns’.

    What are anti-hail guns?

    • An anti-hail gun is a machine that generates shock waves to disrupt the growth of hailstones in clouds, according to its makers.
    • It comprises a tall, fixed structure somewhat resembling an inverted tower, several metres high, with a long and narrow cone opening towards the sky.
    • The gun is “fired” by feeding an explosive mixture of acetylene gas and air into its lower chamber, which releases a shock wave (waves that travel faster than the speed of sound, such as those produced by supersonic aircraft).
    • These shock waves supposedly stop water droplets in clouds from turning into hailstones, so that they fall simply as raindrops.

    Answer this PYQ in the comment box:

    Q.During a thunderstorm, the thunder in the skies is produced by the

    1. meeting of cumulonimbus clouds in the sky
    2. lightning that separates the nimbus clouds
    3. violent upward movement of air and water particles

    Select the correct option using the codes given below:

    (a) 1 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) None of the above

    How do they ‘prevent’ a hailstorm?

    • It is this hail formation process that the shock waves from anti-hail guns try to disrupt in a radius of 500 meters, so that the water droplets fall down before they can be lifted by the updrafts.
    • The machine is repeatedly fired every few seconds during an approaching thunderstorm.
    • However, the effectiveness of anti-hail guns has remained a contentious issue.

    How do Hailstorms occur?

    • Hail is produced by cumulonimbus clouds, which are generally large and dark and may cause thunder and lightning.
    • In such clouds, winds can blow up the water droplets to heights where they freeze into ice.
    • The frozen droplets begin to fall but are soon pushed back up by the winds and more droplets freeze onto them, resulting in multiple layers of ice on the hailstones.
    • This fall and rise is repeated several times, till the hailstones become too heavy and fall down.

  • [pib] SDG India Index 2021

    The third edition of the SDG India Index and Dashboard 2020–21 was released by NITI Aayog.

    SDG India Index

    • The index measures the progress at the national and sub-national level in the country’s journey towards meeting the Global Goals and targets.
    • It has been successful as an advocacy tool to propagate the messages of sustainability, resilience, and partnerships, as well.
    • From covering 13 Goals, 39 targets, and 62 indicators in the first edition in 2018-19 to 17 Goals, 54 targets and 100 indicators in the second; this third edition of the index covers 17 Goals, 70 targets, and 115 indicators.

    Aims and objectives

    • The construction of the index and the ensuing methodology embodies the central objectives of measuring the performance of States and UTs on the SDGs and ranking them.
    • It aims at supporting States and UTs in identifying areas which require more attention; and promoting healthy competition among them.

    Methodology and Process

    • The index estimation is based on data on indicators for the first 16 goals, with a qualitative assessment for Goal 17.
    • The technical process of target setting and normalization of scores follow the globally established methodology.
    • While target setting enables the measurement of the distance from the target for each indicator, the process of normalization of positive and negative indicators allows for comparability and estimation of goal-wise scores.
    • The composite score of a State is derived by assigning each goal the same weight, keeping in mind the indivisible nature of the 2030 Agenda.
    • The selection of indicators is preceded by a consultative process undertaken in close coordination with MoSPI, Union Ministries and stakeholders from States and UTs.

    Highlights of the 2021 Report

    States and Union Territories are classified as below based on their SDG India Index score:

    • Aspirant: 0–49
    • Performer: 50–64
    • Front-Runner: 65–99
    • Achiever: 100

    Its significance

    • The index represents the articulation of the comprehensive nature of the Global Goals under the 2030 Agenda while being attuned to the national priorities.
    • The modular nature of the index has become a policy tool and a ready reckoner for gauging the progress of States and UTs on the nature of goals including health, education, gender, economic growth and climate change and the environment.

    Back2Basics: Sustainable Development Goals

    • The UN General Assembly in its 70thSession considered and adopted the Sustainable Development Goals (SDGs) for the next 15 years.
    • The 17 SDGs came into force with effect from 1st January 2016.
    • Though not legally binding, the SDGs have become de facto international obligations and have the potential to reorient domestic spending priorities of the countries during the next fifteen years.
    • Countries are expected to take ownership and establish a national framework for achieving these goals.
    • Implementation and success will rely on countries’ own sustainable development policies, plans, and programs.

  • International Nitrogen Initiative (INI)

    The United Nations (UN) Sustainable Development Goals (SDGs) are the main focus of the eighth triennial conference of the International Nitrogen Initiative (INI) being held virtually this week.

    International Nitrogen Initiative

    • INI is an international program, set up in 2003 under the sponsorship of the Scientific Committee on Problems of the Environment (SCOPE) and from the International Geosphere-Biosphere Program (IGBP).
    • The key aims of the INI are to:
    1. optimize nitrogen’s beneficial role in sustainable food production, and
    2. minimize nitrogen’s negative effects on human health and the environment resulting from food and energy production.

    Answer this PYQ in the comment box:

    Q.Which of the following adds/add nitrogen to the soil?

    1. Excretion of Urea by animals
    2. Burning of coal by man
    3. Death of vegetation

    Select the correct answer using the code given below:

    (a) 1 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2, and 3

    Why nitrogen?

    • Reactive nitrogen compounds like NOx, ammonia and the greenhouse gas nitrous oxide impact air, water and soil quality, health, biodiversity and climate change, among others.
    • These compounds are lost from fertilizers, manures, and sewage as well as from fuel burning in transport and industry.
    • Assessing and managing them sustainably will be crucial to achieving the 17 UN SDGs targeted for 2030.

    Also read:

    [Burning Issue] Nitrogen Pollution in India

    Back2Basics: Nitrogen Pollution

    • While nitrogen is the dominant gas in the atmosphere, it is inert and doesn’t react.
    • However, when it is released as part of compounds from agriculture, sewage and biological waste, nitrogen is considered reactive.
    • It may be polluting and even exert a potent greenhouse gas effect.
    • Nitrous oxide (N2O) is 300 times more potent than carbon dioxide but isn’t as prevalent in the atmosphere.
    • Other than air pollution, nitrogen is also linked to the loss of biodiversity, the pollution of rivers and seas, ozone depletion, health, economy, and livelihoods.
    • Nitrogen pollution is caused, for example, by emissions from chemical fertilizers, livestock manure and burning fossil fuels.
    • Gases such as ammonia (NH3) and nitrogen dioxide (NO2) contribute to poor air quality and can aggravate respiratory and heart conditions, leading to millions of premature deaths across the world.
    • Nitrate from chemical fertilizers, manure, and industry pollute the rivers and seas, posing a health risk for humans, fish, coral, and plant life.

  • Species in news: Litoria Mira

    A species of frog lives in the rainforests of New Guinea that appears to be made from chocolate — just like the magical sweets popular in the wizarding world of J K Rowling’s Harry Potter.

    Litoria mira

    • The cocoa-colored frogs have turned out to be a new species — and an addition to our knowledge of the animal kingdom.
    • It has a well-known relative — the common green tree frog of Australia called Litoria cerulean.
    • Litoria Mira can be distinguished from all other Litoria by its unique combination of moderately large size, webbing on hand, relatively short and robust limbs, and a small violet patch of skin on the edge of its eyes.

  • Why people are Protesting in Lakshadweep

    The article highlights the issues with development model sought to be pursued in Lakshadweep.

    Background of Island Development Authority’

    • A specially constituted Island Development Authority (IDA) for the island territories of India, chaired by no less than the former Prime Minister, Rajiv Gandhi.
    • IDA had in 1988, approved a framework for the development of India’s island territories.
    • IDA sought an environmentally sound strategy for both island groups hinges on better exploitation of marine resources coupled with much greater care in the use of land resources.
    • Deliberations of the IDA wanted that Lakshadweep, with its land ownership constitutionally protected, be opened to international tourism.

    Issues with following Maldives model for development of Lakshadweep

    •  Recently, the Administrator, Lakshadweep, introduced a slew of draft legislation that will have a wide-ranging impact on the islands.
    • One such legislation is the Lakshadweep Development Authority Regulation 2021 with intentions to develop Lakshadweep like neighbouring Maldives, “a renowned international tourist destination”.
    • Rejecting the Maldives model, the plan for Lakshadweep required that the industry had to be people-centric and enrich the fragile coral ecology.
    • Today, long lines and refrigeration have aided the expansion of the fishing sector but income disparities have grown.
    • Indiscriminate trawling endangers the coral, as experienced in the Maldives and now banned there.
    • The Government recognises the need to develop policies for enhancing employment opportunities, environment-friendly management of fisheries, sanitation, waste disposal and widening access to drinking water, with the youth, having acquired a modern education, preferring salaried jobs over pursuing traditional occupations.

    Conclusion

    What Lakshadweep needs is a clear policy must include conservation and natural resource management arrived at after wide consultation, eminently possible within the existing infrastructure of the Union Territory, and also taking into account climatic compulsions.

  • Monsoon onset over Kerala delayed: IMD

    • The monsoon’s arrival over Kerala has been delayed to June 3, according to an update by the India Meteorological Department (IMD).
    • Private weather forecast agency, Skymet, however, said that the monsoon had arrived.
    • This was because two of the three criteria — as defined by the IMD — had been met.
    • Currently, IMD’s own data indicated that except for the OLR, the other criteria were met. Thus, there is an element of subjectivity in arrival.

    What are those criterias defined by IMD?

    1. Rain-bearing westerlies being at a minimum depth and speed;
    2. At least 60% of the available 14 stations in Kerala and coastal Karnataka, reporting rainfall of 2.5 mm or more for two consecutive days after May 10;
    3. A certain degree of clouding, indicated by a parameter called ‘outgoing long wave radiation’ (OLR), being below 200 W/square meter.

    What is meant by ‘Outgoing Long Wave Radiation’ (OLR)?

    • Outgoing Long-wave Radiation (OLR) is electromagnetic radiation of wavelengths from 3–100 μm emitted from Earth and its atmosphere out to space in the form of thermal radiation.
    • It is also referred to as up-welling long-wave radiation and terrestrial long-wave flux, among others.
    • The flux of energy transported by outgoing long-wave radiation is measured in W/m.
    • In the Earth’s climate system, long-wave radiation involves processes of absorption, scattering, and emissions from atmospheric gases, aerosols, clouds and the surface.
    • Over 99% of outgoing long-wave radiation has wavelengths between 4 μm and 100 μm, in the thermal infrared part of the electromagnetic spectrum.

    Factors responsible for south-west monsoon formation:

    1. Intense heating of Tibetan plateau during summer months.
    2. Permanent high pressure cell in the South Indian Ocean (east to north-east of Madagascar in summer).

    Factors that influence the onset of south-west monsoons:

    1. Above points +
    2. Subtropical Jet Stream (STJ).
    3. Tropical Easterly Jet (African Easterly Jet).
    4. Inter Tropical Convergence Zone.

    Factors that influence the intensity of south-west monsoons:

    1. Strengths of Low pressure over Tibet and high pressure over southern Indian Ocean.
    2. Somali Jet (Findlater Jet).
    3. Somali Current (Findlater Current).
    4. Indian Ocean branch of Walker Cell.
    5. Indian Ocean Dipole.

    Factors responsible for north-east monsoon formation:

    1. Formation and strengthening of high pressure cells over Tibetan plateau and Siberian Plateau in winter.
    2. Westward migration and subsequent weakening of high pressure cell in the Southern Indian Ocean.
    3. Migration of ITCZ to the south of India.

  • Cost and complications of transplanting a tree

    The Central Public Works Department (CPWD) wants to transplant over 1,800 trees which are inside what used to be the Indira Gandhi National Centre for the Arts (IGNCA) complex, as part of the Central Vista redevelopment project.

    Transplantation of trees

    • The transplantation of trees is a complex and delicate process whose outcome cannot be predicted.
    • A tree cannot be transplanted by simply uprooting it and placing it in a pit dug elsewhere. The process involves multiple steps and requires significant expertise.

    How it is done?

    • First, the soil around the tree is dug up to isolate the roots. The big branches are lopped off, leaving only small shoots for regeneration. This is done to make transportation of the tree to the new location easier.
    • The root system is covered with wet gunny bags to protect the roots and to keep the tree hydrated.
    • The tree has to be first sent to a nursery to acclimatize to a new kind of soil, and to regenerate.
    • Once new shoots start sprouting, the tree is lowered into a pit created in its new spot.

    What factors determine the success of a transplant?

    • Even after all steps are meticulously followed, a lot depends on luck. The survival rate of a transplanted tree is about 50%.
    • Not all trees can be transplanted. While peepal, ficus, semal and sheesham are tolerant to transplantation, trees such as dak, palash, arjun, shahtoot and jhilmil are not.

    (1) Roots

    • Any tree that has a tap root system cannot be transplanted, as the root goes deep into the soil, and it is not possible to isolate it without damage.

    (2) Size

    • Transplanting any tree with a trunk girth of more than 80-90 cm is not advisable as the tree cannot bear the shock, and will eventually die.

    (3) Age

    • That effectively means that big, old trees cannot, in most cases, be removed to another location.

    (4) Soil

    • It is important to consider soil type before transplantation.
    • A tree growing on, say, the Delhi Ridge will not easily acclimatize to the soil in the Yamuna floodplain, as the two ecosystems are entirely different.

    How expensive is transplantation?

    • The cost of transplanting an average-sized tree might come to around Rs 1 lakh, which included post-transplantation care.
    • For larger trees, the cost could go up to Rs 3 lakh.
    • Private and voluntary organizations, however, claim that the cost is between Rs 5,000 and Rs 10,000 per tree.

  • Odisha’s blackbucks double in 6 years

    Odisha’s blackbuck population has doubled in the last six years, according to figures from the latest population census.

    Blackbucks in Odisha

    • Blackbucks are found only in the Ganjam district in the southern part of the state, which is where the census was carried out.
    • It is known in Odisha and Ganjam as Krushnasara Mruga.
    • The people of Ganjam believe the sighting of a blackbuck in a paddy field is a harbinger of luck for them.
    • It used to be sighted in the Balukhand-Konark Wildlife Sanctuary in Puri district till 2012-13, but now has vanished from the area.
    • The blackbuck is a Schedule-1 animal according to the Wild Life (Protection) Act, 1972 (amended in 1992) and is considered as ‘Vulnerable’ according to the Red Data Book.

    Reasons for their rise

    • Improvement of habitats, the protection given by the local people and forest staff were some of the reasons for the increase of the population.
    • The people of Ganjam had been enthusiastically protecting the animal like the Bishnois of western Rajasthan and the Vala Rajputs of Saurashtra.

    Answer this PYQ:

    Q.With reference to ‘Eco-Sensitive Zones’, which of the following statements is/are correct?

    1. Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972.
    2. The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities, in those zones except agriculture.

    Select the correct answer using the code given below:

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2

    Back2Basics: Wildlife (Protection) Act, 1972

    • WPA provides for the protection of the country’s wild animals, birds, and plant species, in order to ensure environmental and ecological security.
    • It provides for the protection of a listed species of animals, birds, and plants, and also for the establishment of a network of ecologically important protected areas in the country.
    • It provides for various types of protected areas such as Wildlife Sanctuaries, National Parks, etc.
    • There are six schedules provided in the WPA for the protection of wildlife species which can be concisely summarized as under:
    Schedule I: These species need rigorous protection and therefore, the harshest penalties for violation of the law are for species under this Schedule.
    Schedule II: Animals under this list are accorded high protection. They cannot be hunted except under threat to human life.
    Schedule III & IV: This list is for species that are not endangered. This includes protected species but the penalty for any violation is less compared to the first two schedules.
    Schedule V: This schedule contains animals which can be hunted.
    Schedule VI: This list contains plants that are forbidden from cultivation.

     

  • Data central to effective climate action

    Article highlights the importance of data driven approach in dealing with the future disruptions and suggests the reforms in the system.

    Managing the disruption through data-driven tools

    • The data-driven tools were used for managing pandemic induced disruption.
    • This offers an opportunity to restructure the data ecosystem for managing the disruptions of the future that are more likely to be driven by climate change.

    Policies for data sharing in India

    • The National Data Sharing and Accessibility Policy (NDSAP), 2012 recognises the importance of data.
    • NDSAP recognised the importance of data in improving decision making, meeting the needs of civil society and generating revenue by permitting access to datasets.
    • In 2012, a government portal, data.gov.in was also established as a unified platform to enable sharing of data available with ministries, departments and other public agencies for wider public use.
    • The sharing of data in this platform, apart from others, is further streamlined through the nodality of Chief Data Officer-CDO in respective ministries.

    Challenges

    • Challenge remains about whether the collected data is usable, accessible and if it captures the details that end users are interested in.
    • Even after years of the portal’s operationalisation, there are multiple data-sets that aren’t updated regularly.
    • Though NITI Aayog has brought indices to track climate actions such as under SDG-13 of SDG India Index, but it remains vague in tracking improvements in climate resilience, by solely using number of lives lost due to extreme weather events.

    Reforms needed in data-ecosystem

    • 1) Complete dataset: There is a need to collect complete datasets required to assess climate risks and vulnerabilities.
    • This involves collection of datasets that are sex-disaggregated and geo-spatial and collect more nuanced dimensions like disaster response capacities.
    • Targeted research: There is a requirement of targeted research for designing better questionnaires and identifying new nodes for data collection.
    • 2) Reliability of data: The data collected has to be made reliable and usable through an accountability framework.
    • Legislation: A separate legislation in this regard would bring in the much-needed consistency in periodic collection of identified datasets and their proactive sharing in designated platforms.
    • 3) Centralisation of data: There is a need for centralising public data that currently exists with different departments and public institutions.
    • The National Data Governance Centre was planned to be set up in 2019 for precisely this objective.
    • But it is yet to be operationalised.

    Consider the question “How data driven approach could help India deal with the future disruptions that are more likely to be from climate change? Suggest the reforms needed in India’s data ecosystem.”

    Conclusion

    It is time that India places itself on track to address the issues around the known unknowns of climate change through data driven apporach.

    Source:

    https://www.financialexpress.com/opinion/data-central-to-effective-climate-action/2258964/