Global warming could spread US ragweed to UK, causing misery for hayfever sufferers

Climate change could help the invasive weed from north America, that triggers severe allergic reactions, become common across the UK by 2050, experts have warned Climate change could help a notorious invasive weed known to trigger severe allergy…  Source: www.theguardian.com

GR:  Over recent centuries, people have introduced many invasive species to North and South America.  New World invasive species are fewer, but there have been a few troublesome species introduced to the Old World.  One should note that most of the damage caused by invasive species is by replacing native species.  Whole ecosystems can collapse if too many natives are lost.

See on Scoop.itGarryRogers NatCon News

Why invasive plants are second biggest threat to biodiversity after habitat loss

As experts gather in London for a major conference addressing the often overlooked threat of invasive species to biodiversity, Carrie Madren gets a briefing from those on the frontline in the battle against ‘pest plants’…Source: www.theecologist.org

GR:  I reached the same conclusion about invasive plants, but as the symptoms of global warming grow stronger, I am shifting my central focus to another lost cause–leaving fossil fuels in the ground. The photo shows a barren area carpeted by invasive plants.  Ninety percent of the native shrubs are gone.

Converting A ‘Weedy’ Grass To Quality Forage For Livestock

Messing with Nature and Calling it Range Management

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Purple threeawn

“While native plants are adapted to thrive in our region, they don’t always provide the best forage for livestock or wildlife. But what if you could change that? What if you could convert bad forage to good? That’s the question Agricultural Research Service (ARS) scientist Lance Vermeire asked when studying purple threeawn, a decidedly less than…”

Source: www.roundupweb.com

welfare ranchingGR:  The ignorance displayed by this range manager is shocking.  It should remind us all that focusing too closely on a single goal can cause us to overlook critical alternatives.  This article describes an instance where managing nature to benefit domestic livestock creates a willingness to take chances.  Range managers have gambled on new techniques and new species for many years.  They ignore negative possibilities and focus on their goal—more food for cows or sheep. They do not consider ecosystem responses to their new techniques.  They do not consider the effects on on soil microorganisms, and they do not worry about future invasion potential. The result of similar “range management” has been the loss of more than 100-million acres of productive native grasslands and shrublands in the western U. S.  Go here to read more about the results of foolhardy management of rangelands.

Invasive Species

For several years I’ve been observing, documenting and appreciating nature and the environment in Michigan. During those years, I’ve discovered some of the subjects I’ve photographed and written ab… Source: photonatureblog.com

GR:  After direct habitat destruction by building, invasive species are the most destructive force that humans have dispersed through Earth ecosystems.  Long before global warming has its day, invasive species will have eliminated many native habitats and species.