Kenya faces devastating Prosopis invasion: What can be done

By Purity Rima Mbaabu. Originally published on The Conversation.

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Prosopis in Lake Baringo, Kenya. Photo: ©CABI

Woody plant species have been deliberately introduced into many arid and semi-arid regions across the world as they can help combat desertification and provide resources – like fuelwood – to the rural poor. But some of these alien trees and shrubs have become invasive, having devastating effects on other species as well as people.

This is big problem in the mainly arid Baringo County, in Kenya’s Rift valley as well as other counties north, east and south of the country.

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Invasive species are Australia’s number-one extinction threat

By Andy Sheppard and Linda Broadhurst. Originally published on The Conversation.

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Barking Owls are one of Australia’s 1,770 threatened or endangered species. Navin/FlickrCC BY-SA

This week many people across the world stopped and stared as extreme headlines announced that one eighth of the world’s species – more than a million – are threatened with extinction.

According to the UN report from the Intergovernmental Science-Policy Platform for Biodiversity and Ecosystem Services (IPBES) which brought this situation to public attention, this startling number is a consequence of five direct causes: changes in land and sea use; direct exploitation of organisms; climate change; pollution; and invasion of alien species.

It’s the last, invasive species, that threatens Australian animals and plants more than any other single factor.
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Invasive weed could cut crop yields by 30 per cent

By Nicholas Okeya. Originally published on SciDev.Net.

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Cuscuta campestris infestation on ornamental plant in Mombasa County, Kenya Copyright: Innocent Ngare

A dangerous invasive alien weed known as field dodder could be a serious menace to agriculture and biodiversity across Sub-Saharan Africa, and reduce crop yields, scientists say.

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How a wasp might save the Christmas Island red crab

By Stephanie Dittrich. Reblogged from Island Conservation.

Invasive crazy ants threaten Christmas Island Red Crab populations, but a certain species of wasp might be able to help.

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The Christmas Island red crab is a land crab endemic to Christmas Island and Cocos Islands in the Indian Ocean. Credit: John Tann, Wikimedia

Christmas Island, a remote Australian territory in the Indian Ocean, is known for an abundance of Red Crabs, a species once recorded in numbers nearing 44 million. The Red Crab has captured the hearts of naturalists and nature novices alike, due to the beauty and magnificence of their yearly mass migration from land to sea to lay their eggs in the ocean. However, in recent years, they have suffered a tremendous decline of roughly 40 million, according to recent population surveys. The cause? Invasive crazy ants, which are believed to have been introduced by a ship sometime during the early 20th century.

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Not Just Maize: Africa’s Fall Armyworm Crisis Threatens Sorghum, Other Crops, Too

By Sara Hendery. Reblogged from Entomology Today.

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The fall armyworm (Spodoptera frugiperda) is causing significant damage to maize since its arrival in Africa in 2016, but it is in fact a polyphagous pest. Sorghum, a key cereal crop in Africa (shown here), is also vulnerable, and researchers are working on biocontrol and other integrated pest management methods in hopes of containing the fall armyworm’s impact around the world. (Photo credit: Feed the Future Innovation Lab for Integrated Pest Management)

Scientists from the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in Niger say that 99 percent of the media and research coverage on the fall armyworm focuses on the invasive pest’s deadly threat to maize.

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Indian farmers using smartphones to fight fast-moving crop killer

By Eric Marx. Reblogged from Ethical Corporation.

Plantix is a diagnostic app that uses image recognition software and AI. It is being used to halt the advance of the fall armyworm pest.

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An app that uses artificial intelligence to identify plant disease is being deployed in India as an early-warning system to stop the advance of a crop-destroying caterpillar that is having a devastating impact on maize crops in Africa.

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Largest Invasive Alien Plant dataset is now published online!

By Samantha Garvin. Reblogged from JRS Biodiversity Foundation.

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Lantana Camara is an invasive species in East and Southern Africa

CABI has published one of the most complete and current datasets on Invasive Alien Plants (IAP) in East and Southern Africa. This extraordinary dataset is already being translated into new research findings and conservation action on the ground.

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