Skip to main content

Deepwater Horizon oil spill puts dolphins at risk (downtoearth)

The Deepwater Horizon oil spill has spelt doom for dolphins in Barataria Bay in the Gulf of Mexico. A study conducted by the UK-based University of St Andrews says dolphins are struggling to survive in the gulf.

The spill, which occurred in 2010 in the Mexican gulf, killed thousands of marine mammals and its negative effects are still being felt seven years after the incident. In what can be termed as one of the worst environmental disasters, an explosion in the Deepwater Horizon rig spilled 134 million gallons of oil into the sea.

The study coordinated by the National Oceanic and Atmospheric Administration found that the dolphin population in Barataria Bay will have reduced by 50 per cent within the decade following the spill and that full population recovery will take 40 years. In addition, scientists found that 25 per cent of the current population of dolphins is underweight and 17 per cent are in poor condition.

The chemicals present in oil and petroleum products can affect marine animals either by internal exposure due to inhalation and ingestion, or external exposure through the skin and eyes.

Sea turtles were found dead after being exposed to chemicals following the lxtoic oil spill. On investigation, researchers found that the dead turtles were exposed to massive amounts of hydrocarbons. Presence of oil on the beach also affects turtles’ nesting habit. In the aftermath of the Chennai oil spill, Olive Ridley turtles have been badly affected.

Comments

Popular posts from this blog

Cloud seeding

Demonstrating the function of the flare rack that carries silver iodide for cloud-seeding through an aircraft. 
Water is essential for life on the earth. Precipitation from the skies is the only source for it. India and the rest of Asia are dependent on the monsoons for rains. While the South West Monsoon is the main source for India as a whole, Tamil Nadu and coastal areas of South Andhra Pradesh get the benefit of the North East Monsoon, which is just a less dependable beat on the reversal of the South West Monsoon winds.

SC asks Centre to strike a balance on Rohingya issue (.hindu)

Supreme Court orally indicates that the government should not deport Rohingya “now” as the Centre prevails over it to not record any such views in its formal order, citing “international ramifications”.

The Supreme Court on Friday came close to ordering the government not to deport the Rohingya.

It finally settled on merely observing that a balance should be struck between humanitarian concern for the community and the country's national security and economic interests.

The court was hearing a bunch of petitions, one filed by persons within the Rohingya community, against a proposed move to deport over 40,000 Rohingya refugees. A three-judge Bench, led by Chief Justice of India Dipak Misra, began by orally indicating that the government should not deport Rohingya “now”, but the government prevailed on the court to not pass any formal order, citing “international ramifications”. With this, the status quo continues even though the court gave the community liberty to approach it in …

India’s criminal wastage: over 10 million works under MGNREGA incomplete or abandoned (hindu)

In the last three and half years, the rate of work completion under the Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA) has drastically declined, leading to wastage of public money and leaving villages more prone to drought. This could also be a reason for people moving out of the programme.

At a time when more than one-third of India’s districts are reeling under a drought-like situation due to deficit rainfall, here comes another bad news. The works started under the MGNREGA—close to 80 per cent related to water conservation, irrigation and land development—are increasingly not being completed or in practice, abandoned.

Going by the data (as on October 12) in the Ministry of Rural Development’s website, which tracks progress of MGNREGA through a comprehensive MIS, 10.4 million works have not been completed since April 2014. In the last three and half years, 39.7 million works were started under the programme. Going by the stipulation under the programme, close to 7…