8. Dec, 2019

Blog: Solo or buddy?

Picture of the week: Reef wall, Raja ampat

News: Warming oceans show decrease of oxygen

Climate change and nutrient pollutions are driving the oxygen  from our oceans, and threatening many species of fish.

News: Orcas in peril in Puget sounds

Puget Sounds is a sound in the Pacific Northwest, an inlet of the Pacific Ocean, and part of the Salish Sea. It is located along the northwestern coast of the U.S. state of Washington. The Orca population in the southern resident part is endangered according to U.S. Fish and Wildlife Service. Declining salmon population and pollution pose the largest threats to the killer whales’ survival. The noises produced by increasing numbers of oil tankers passing by might be another factor. Chemicals and pesticides accumulate as the fish feed and eventually end up stored in the orcas’ fat. These toxins suppress the whales' immune systems, leaving them vulnerable to disease, and can affect the females' ability to reproduce.

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News: All modern humans originated in northern Botswana, study says

According to a  new genetic study by Vanessa Hayes all modern humans trace our ancestry to a single spot in southern Africa 200,000 years ago. Suggesting that we all are descendants from the Khoisan in North Botswana. The name of the former paradise is  Makgadikgadi. What is now the Kalahari region of northern Botswana. ‘Mitochondrial Eva’, a DNA transferred from mother to daughter, is seen as a time capsule that gradually transforms with time.  The group investigated DNA extracted from the blood of 1217 African aboriginals. 

News: Dead coral rejuvenated

For the first time ever, scientists have found corals that were thought to have been killed by heat stress have recovered: a glimmer of hope for the world's climate change-threatened reefs. This was discovered by a team led by Diego Kersting at the Columbretes islands near Spain. It concerned the species  Cladacora caespitosa, which stands out as the only reef-building Madreporaria species in the Mediterranean and adjacent Atlantic (picture left by Veronique  Lamare)  In some areas of the Adriatic  Mediterranean sea, these corals may even occupy significant zones. The question, however, is the implication of this finding for other types of corals in the tropical oceans.

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