Extinction

"Biological diversity is being lost at a rate unequalled since the appearance of modern ecosystems more than 40 million years ago. A quarter of all mammals are threatened with extinction and nearly 70% of the world’s fish stocks are fully exploited, overexploited, or depleted"

Going the way of the Dodo

Extinction, Wikipedia

Has the 6th Mass Extinction Arrived? / Nature

Sixth Mass Extinction Is Here: Humanity Threatened / Science Daily / June 19, 2015 /

Source: Stanford University / Summary: Biologists have use highly conservative estimates to prove that species are disappearing faster than at any time since the dinosaurs' demise.

Species Extinction Threat Grows

"Warning: 6th Extinction"

○

Human's Creating Sixth Great Extinction

'Sixth mass extinction': Earth's species disappearing at frightening rate, new study says

19 June 2015

In the most sobering study of extinction yet, a team of Bay Area scientists says that animal species are disappearing at an accelerating rate -- portending the sixth mass extinction in the 4.5-billion-year history of the Earth. "We are entering a mass extinction equivalent to what happened to the dinosaurs" unless conservation efforts are intensified, said UC Berkeley paleontologist Anthony D. Barnosky and an author of the Science Advances report, which was published Friday. If the trend continues, "within two human lifetimes we are in danger of losing three of four species on Earth,"...

UC Berkeley's Anthony Barnosky says the "sixth mass extinction" is not yet a done deal. In his new book "Dodging Extinction," he offers these preventive actions:Spread the word that the crisis is real.

Reduce your carbon footprint.

Buy products from companies that limit deforestation by using sustainably produced palm oil, a major ingredient in food, cosmetics and soap.

Eat fish from healthy fisheries. Learn more at the Monterey Bay Aquarium's Seafood Watch list at www.seafoodwatch.org.

Eat less meat, to reduce agriculture's clear-cutting of rainforests.

Never buy anything made from ivory.

Adopt a species, or become a "citizen scientist" for a conservation group.

Support efforts to educate women in developing nations in order to slow population growth.

Vote for leaders who recognize the importance of conservation and carbon-neutral energy policies.

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

http://www.globalissues.org/article/171/loss-of-biodiversity-and-extinctions

http://www.eniscuola.net/en/argomento/biodiversity1/loss-of-biodiversity/causes-of-the-loss-of-biodiversity/

https://www.iucn.org/iyb/about/biodiversity_crisis/

http://www.millenniumassessment.org/proxy/Document.354.aspx

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Habitat fragmentation and its lasting impact on Earth’s ecosystems / March 2015

“There are really only two big patches of intact forest left on Earth”

... the studies showed that when patches of forest become smaller and more isolated, the abundance of birds, mammal, insects and plants decreases in kind — those pressures reduced the species’ ability to persist... On average... fragmented forests lose more than half of their species within just 20 years; in the one experiment that’s still ongoing after more than two decades, the losses are continuing to compound.

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

The Sixth Extinction by Elizabeth Kolbert, published February 2014

Editorial Reviews

Reader Comments

Wikipedia / Book: The Sixth Extinction

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

BIODIVERSITY -- https://en.wikipedia.org/wiki/Biodiversity

http://science.jrank.org/pages/861/Biodiversity-Species-richness-biosphere.html

https://en.wikipedia.org/wiki/Biodiversity_action_plan

THE BIOSPHERE

The biosphere is integral to the functioning of earth systems. First, the present atmosphere is the product of respiration on the part of plants, which receive carbon dioxide and produce oxygen. In addition, transpiration, a form of evaporation from living organisms (primarily plants), is a mechanism of fundamental importance for moving moisture from the hydrosphere through the biosphere to the atmosphere....

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

http://www.biodiversitya-z.org/

http://www.biodiversitylibrary.org/

http://www.biodiversitymapping.org/visualizations.htm

https://www.cbd.int/gbo3/ - Convention on Biological Diversity

http://www.eol.org/

http://globaia.org/

https://en.wikipedia.org/wiki/International_Union_for_Conservation_of_Nature

http://www.biodiversityassociation.org/

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

SMALL v LARGE SPECIES

Phytoplankton obtain energy through the process of photosynthesis and must therefore live in the well-lit surface layer (termed the euphotic zone) of an ocean, sea, lake, or other body of water. Phytoplankton account for half of all photosynthetic activity on Earth. Thus phytoplankton are responsible for much of the oxygen present in the Earth’s atmosphere – half of the total amount produced by all plant life. http://en.wikipedia.org/wiki/Phytoplankton

○

Marine Biodiversity Strongly Linked to Ocean Temperature

ScienceDaily (July 29, 2010) — In an unprecedented effort that will be published online on the 28th of July by the international journal Nature, a team of scientists mapped and analyzed global biodiversity patterns for over 11,000 marine species ranging from tiny zooplankton to sharks and whales. The researchers found striking similarities among the distribution patterns, with temperature strongly linked to biodiversity for all thirteen groups studied. These results imply that future changes in ocean temperature, such as those due to climate change, may greatly affect the distribution of life in the sea.

http://www.sciencedaily.com/releases/2010/07/100728131707.htm

○

LARGE "CHARISMATIC" SPECIES

https://en.wikipedia.org/wiki/The_world's_100_most_threatened_species

The standard approach, when looking at threatened species, is to focus on well-known larger species.

These are often called the 'charismatic' or 'iconic' species, versus the rarely considered 'worthless' species or the species that are not even 'known', or known to be in danger ... The reality is that much of the extinction in our era is of the small species, the lesser known, the unknown and unconsidered species... whether in the rich biospheres of the rainforest or the oceans, the micro-organisms are at risk and in peril of collapse.

When we speak of plankton, as a profoundly critical keystone species, the food chain of the oceans begins with plankton, yet the disruption of the atmosphere and the heating of the ocean, or acidification, will have great consequences to the phytoplankon flagellates, who cannot move with their limited locomotion system... the increases of heat or strengthened suns rays due to changes in atmospheric conditions, and UV radiation, can have deadly consequences.

If the food chain is disrupted, endangered and/or destroyed, the rest of the food chain, the connectivity between species, will be disrupted, endangered, and/or destroyed.

This is a great challenge of the era in which we live... loss of biodiversity and a 'ripple effect' over time, a threat environment that demands strategic environmental security as a key goal, as a policy objective of awareness and sustainability.

○

‎