Category Archives: Endangered Plants

North America’s Ubiquitous Ash Trees Declared Endangered

Five of the six most prominent ash tree species in North America enter The IUCN Red List as Critically Endangered – only one step from going extinct – with the sixth species assessed as Endangered. These species are being decimated by the invasive Emerald Ash Borer beetle(Agrilus planipennis). Three of them – Green Ash (Fraxinus pennsylvanica), White Ash (Fraxinus americana) and Black Ash (Fraxinus nigra) – are the country’s most dominant ash trees, comprising nearly nine billion trees in the forested lands of the contiguous U.S. (Click on title for full story.)

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Reconsidering The Value Of Alien Plants When Native Ecosystems Are Too Degraded

“Conservation practitioners are investing millions of dollars to eradicate invasive species, but what if some of those invasive species are actually benefiting native species and ecosystem services? Our experimental study shows for the first time that this can be the case.” (Click on title for full story.)

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Long Buried “Ghost Ponds” May Hide Extinct Plant Species

“Given the range of different seed types that we found capable of germination after 150-plus years, it could be reasonable to expect that ghost ponds could provide suitable reservoirs of rare or even extinct species,” (Click on title for full story.)

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Is Every Endangered Plant Species Worth An All Out Conservation Effort?

One in five of the world’s plant species is threatened with extinction, according to the annual State of the World’s Plants report from Royal Botanic Gardens, Kew. That’s a lot of plants that need tender love and care – and money – to keep them from going extinct. (Click on title for full story.)

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Watching The Lights Go Out On Extinct Species: The Botanist’s Burden

Let’s say for 20 years you’ve been observing a tree on a fern-covered crag thousands of feet above sea level on an island in the Pacific. Then one day you hike up to check on the plant and find it dying. You know it’s the last one of its species, and that you’re the only witness to the end of hundreds of thousands of years of evolution, the snuffing out of a line of completely unique genetic material. You might have to sit down and write a poem. Or at least bring a bit of the dead plant to a bar and raise a beer to its life. (Click on title for full story.)

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What Happens After Invasive Plants Are Eradicated? It Will Never Be The Same

By the end of the three years of the study, the plant community in the plots where stiltgrass had been removed had diverged even further from the community present in the plots that had never been invaded at all (and from the ones were stiltgrass was allowed to remain). In other words, when the invaders left, the place changed even more than before. (Click on title for full story.)

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Extinct Plant Comes Back From Oblivion To Stop A Development Project

“As far as we understand, the hibbertia was found on the project site in October last year and was the first time it had been seen since 1823. The planning assessment commission then approved the development in December – but wasn’t provided with any information about this newly rediscovered threatened species,” (Click on title for full story.)

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Devastated Rain Forests Aren’t Just Going To Restore Themselves

The results of the research have implications for the restoration of rainforests: “It is highly unlikely that the tree species we studied is able to recolonise cleared patches in a fragmented habitat by natural seed dispersal alone,” says Kettle. He adds that the same applies to other endangered species of tropical tree with large fruit and seeds dispersed by birds, as evidence from other fragmented tropical forests around the world shows that seeds of this kind are dispersed only locally. “For rainforest restoration projects to be successful, you have to give special attention to these trees,” says Kettle. “If you want to encourage them to spread, the only option is to collect their seeds, set up tree nurseries and then actively plant out the saplings at a later stage.” (Click on title for full story.)

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A Successful Strategy To Control Asian Longhorned Beetle Infestation

The Asian longhorned beetle (Anoplophora glabripennis) is one of the 10 most dangerous quarantine pests in the world. More than 30 ALB infestations have been reported in eight European countries to date; six of these infestations have now been eradicated. In most cases, it took more than 10 years to wipe out the beetle population in large outdoor infestations. The pest has killed millions of poplar trees in China. Winterthur (Switzerland) has recently shown that it is possible, however, to eradicate even large outdoor infestations within the statutory minimum period of four years. This requires decisive action right at the start of an outbreak, because only the best and most experienced people on the ground can isolate the infested area in the first year. (Click on title for full story.)

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Are Coconut Palms Doomed?

In this day and age, coconuts seem to be, somehow, everything at once. You can buy oil from coconuts—not to be confused with butter from coconuts—and flour and sugar and milk and aminos and vinegar from coconuts. The coconut market is booming. But the long-term outlook for coconuts? Not as good. In the Caribbean, bacteria that cause lethal yellowing are wiping out coconut trees (Click on title for full story).