SUCCESSION

  a universal process of directional change in vegetation, on an ecological time scale. occurs when a series of communities replace one another due to large scale destruction either natural or manmade. continously -one community replacing another community, until a stable, mature community develops. The first plant to colonise an area is called the pioneer … Read more

Noise Pollution

  Sound is measured in decibels (dB). An increase of about 10 dB is approximately double the increase in loudness. A person’s hearing can be damaged if exposed to noise levels over 75 dB over a prolonged period of time. The World Health Organization recommends that the sound level indoors should be less than 30 … Read more

Environmental Impact Assessment (EIA)

Notification on Environmental Impact Assessment (EIA) of developmental projects 1994 under the provisions of Environment (Protection) Act, 1986 making EIA  mandatory for 29 categories of developmental projects. One more item was added to the list in January, 2000. environmental impact assessment statutory for 30 activities Environment Impact Assessment Notification of 2006 has categorized the developmental … Read more

DMPQ: . What are wetlands? What is Ramsar convention?

Wetlands are areas of marsh or peatland with water that is static or flowing, fresh, brackish or saline, including areas of marine water the depth of which at low tide does not exceed 6 m.   Wetlands are transition zones between terrestrial and aquatic ecosystems. E.g. Mangroves, lake littorals (marginal areas between highest and lowest … Read more

ENVIRONMENT POLLUTION 2

E — WASTE E-waste is not hazardous if it is stocked in safe storage or recycled by scientific methods or transported from one place to the other in parts or in totality in the formal sector. The e-waste can be considered hazardous if recycled by primitive methods Survey was carried out by the Central Pollution … Read more

Assam Planned development

Assam  Planned development:- On September 25th 2015, countries adopted a set of goals to end proverty, protect the planet, and ensure prosperity for all as part of a new sustainable development agenda. Each goal has specific targets to be achieved over the next 15 years. Assam is among the first states in the country to … Read more

LAKE ECOLOGY

  Any – body of standing water, generally large enough in area and depth, irrespective of its hydrology, ecology, and other characteristics is generally known as lake. Ageing of Lakes The nutrient enrichment of the lakes promotes the growth of algae, aquatic plants and various fauna. This process is known as natural eutrophication. Similar nutrient … Read more

28.02.18 APSC (Assam) Current Affairs

ASSAM Guwahati organises tribal festival ‘Aadi Mahotsava’ Assam has organised a tribal festival called ‘Aadi Mahotsava’ at Gandhi Mandir Indoor stadium field in Guwahati to celebrate the ethnic tribal culture of the country. The 10-day festival is being conducted by the Tribal Cooperative Marketing Development Federation of India in collaboration with the Ministry of Tribal … Read more