Showing posts with label Biodiversity. Show all posts
Showing posts with label Biodiversity. Show all posts

Wednesday, 31 July 2019

The more we carve up natural landscapes with roads and fields, the closer we’re pushing large predators like lions and wolves, toward extinction. by Larry Powell


While the consequences of habitat loss have been known for some time, new research just published, underlines just how grave the situation has become. 
While this latest research is German, animals like the grey wolf
faces similar disruption in North America. 
It’s called “habitat fragmentation.” And, it’s been happening on such a large scale, it’s been hard to tell what aspects are the most destructive. That's because ecologists - at least 'til now - haven't been able to properly keep track of all wildlife within an entire eco-system when human developments confine them to smaller and more isolated patches of livable space. 
Seismic lines dissect the boreal forest in northern Alberta.
Photo by Roland Roesler.
Using a new computer modelling system, German scientists have concluded, such landscapes are a big problem for large predators such as lions and wolves. They're the ones who run out of food first as their prey diminishes. If these large predators disappear, entire wildlife "communities" suffer.


The study concludes, "Habitat isolation is the main driver causing species loss and diversity decline." This can include the collapse of entire, complex "food webs" and make these large "apex" predators the most vulnerable to outright extinctions.


The study was published yesterday in the proceedings of The Royal Society.

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Saturday, 25 May 2019

Soil communities threatened by destruction, instability of Amazon forests


ScienceDaily
 In this image, intact forest is deep green, while cleared areas are tan (bare ground) or light green (crops, pasture, or occasionally, second-growth forest). The fish-bone pattern of small clearings along new roads is the beginning of one of the common deforestation trajectories in the Amazon. 
A NASA photo.
The clearing and subsequent instability of Amazonian forests are among the greatest threats to tropical biodiversity conservation today. Story here.

Friday, 30 November 2018

Researchers say Canada’s race to conserve marine biodiversity may backfire

Laurier
Canada’s race to meet biodiversity conservation targets could jeopardize the very goal it is trying to achieve. More here.
Aerial view of the Bunsby marine park. West coast of Vancouver Island. Bc.
Photo by Kiwican







Friday, 2 June 2017

Biodiversity moves beyond counting species

nature
Ecologists are increasingly looking at how richness of traits — rather than number of species — helps set the health of ecosystems. Details here.

Sunday, 17 July 2016

Scientists Warn of 'Unsafe' Decline in Biodiversity

BBC News

An international team of scientists has issued a warning that biodiversity is dropping below safe levels for the support and wellbeing of human societies. Story here.

Saturday, 29 November 2014

Saturday, 11 May 2013

On World Migratory Bird Day, UN Calls for Greater Protection of Habitats

United Nations News Centre
Yellow-headed blackbird. PinP photo.
As an estimated 50 billion birds commence their annual migrations, the critical staging areas they need to complete these journeys continue to be degraded or are disappearing completely, the United Nations today warned on this year's World Migratory Bird Day. Details here.
Brush-clearing on a Manitoba farm. PinP photos.

Tuesday, 23 April 2013

Saturday, 16 October 2010

Back Biodiversity 100, Save our Wildlife

The Guardian, 4 Oc 2010 - George Monbiot

To press governments into action, not platitudes on the biodiversity crisis,...

Beyond Covid 19. Are we risking yet another pandemic if we continue to embrace "assembly-line" livestock production into the future?

by Larry Powell No one would argue that Covid 19 demands our undivided attention. Surely,  defeating this "beast" has to be &...