19. Sep, 2019

Blog: Nikon-mania

Picture of the week: the beauty of a sea slug

The superb colors of this Costasiella see slug were captured by  Veeko Wang at Liberty Dive Resort Tulamben, Bali.  Its official name is  Costasiella kuroshimae ,  a species of   Sacoglossa, commonly known as the ‘sap-sucking sea slugs’  that live by ingesting the cellular contents of algae.

Higlighted: climate change refugees: a new class of displaced people?

The Marshall islands an independent nation made up of five islands and 29 atolls equaling about the size of Washington, D.C., are home to an estimated 72,191 people (see also my earlier Blog). Its residents have fled toxic radiation and now face the threat of rising sea levels and to suffer the greatest and most immediate consequences of climate change. A new class of displaced people, so-called “climate change refugees,” has emerged as some populations find their environments increasingly threatened by extreme climate conditions.

News: First success with Ocean Clean up project

A huge floating device designed by the team of  Dutch scientist Boyan Slat to clean up an island of rubbish in the Pacific Ocean that is three times the size of France has successfully picked up plastic from the high seas for the first time. The next step is to scale up the current device and make it more durable so it can retain plastic for up to a year or possibly longer before collection is necessary. Some marine biologists like Rebecca Helm have expressed concern that sweeping up the plastic might also have an impact on drifting small organisms like larval fish called  neuston, using the plastic islands as their territory. Suggesting that some collateral damage might occur when Ocean cleaners sweep up the plastic debris with their mega-nets.

Highlighted: Climate change is reshaping the world’s Oceans and Ice IPCC says.

On Wednesday, the IPCC panel of the United Nations released a major report on the state of the planet's oceans and ice. The 900-page IPCC report which compiles the findings from thousands of scientific studies outlines the damage climate change has already done to the planet’s vast oceans and fragile ice sheets and forecasts the future for these crucial parts of the climate system.

News: Toxic cocktail found in dolphins in the British Channel

Bottlenose dolphins (Tursiops truncatus) in the English Channel have been found to carry a “toxic cocktail” of chemicals in their bodies which may be harming the marine mammals’ health, scientists have said in Scientific reports (see the article). The Biopsy samples of skin and blubber were collected from 82 bottlenose dolphins from the Normanno-Breton Gulf in the English Channel. Many of the chemicals, including so-called PCBs (polychlorinated biphenyls), have been banned since the 1970s and 1980s but persist in the environment, where they can pass through the food chain.  Top predators such as dolphins and whales are particularly likely to accumulate high levels of toxins in their fatty tissue. Mothers can pass the chemicals to their calves during pregnancy and lactation.

Highlighted: E-book update

This ‘E-book’  contains an updated collection of around 80  blog articles for the last three years.   I here provide two separate content lists, a list in which the articles are ordered according to the five most often recurring themes, and a chronological list. A simple click on the title will hopefully guide you to the article of your choice. For download,  click  next to the  PDF icon below

E-book