About GarryRogers

Dr. Garry Rogers is a biogeographer with interests in natural landscapes, vegetation ecology, and nature conservation. He agrees with the logic of the ecocentric view that all of nature, the atmosphere, biosphere, geosphere, and hydrosphere, has intrinsic value.

Yikes! Stinknet is Here!

Stinknet Has Reached Dewey-Humboldt, Arizona

Yesterday (June 14, 2019), I discovered a new invasive weed growing in Humboldt. The plant’s small yellow flowers caught my attention as I walked along Old Black Canyon Highway. Roads are common dispersal routes for invading weeds. First the roadsides, next the yards and hillsides.

Stinknet (Oncosiphon piluliferum), an invasive desert weed.

The first thought produced by Stinknet is that its bright yellow flowers are beautiful. The next thought, however, is that something stinks. Stinknet produces resinous sap that smells like a rotten pineapple. The odor plus the tendency for the plants to grow in tight formation create real impediments to outdoor activity. Even worse, Stinknet is a strong competitor that replaces native plants. But worse still, the plants are highly flammable and encourage destructive wildfires. If Stinknet invades, the quality of natural habitats will decline and many soil organisms, native plants, and native animals will disappear.

Stinknet is spreading across the hot deserts of California and Arizona. I’ve known about the weed since 2008 when Andrew Salywon of the Phoenix Botanical Garden ranked it as one of four weeds posing the greatest threats to Agua Fria National Monument 20mi south of Humboldt. The plant has not been reported above 2300ft in Arizona, and I assumed that at 4500ft, Lonesome Valley winters would be too cold for Stinknet. I did not even include it in the list of possible future weeds in Weeds of Dewey-Humboldt, Arizona. Let’s hope that other dangerous weeds that I did not list will not reach Lonesome Valley.

Stinknet is a member of the Sunflower family. It’s small round yellow flower heads are composed of 100 to 250 flowers packed into a ball no more than 1cm (1/2in) in diameter (Copyright 2019, Garry Rogers).

Stinknet is a small plant rarely more than 2ft tall. This plant is about 6 1/2in (Copyright 2019, Garry Rogers).

 

Treatment: How to Control Stinknet

Though people have carried Stinknet thousands of miles from its South African home, and though the plant has dispersed rapidly along Arizona highways, Stinknet may not survive and spread in Dewey-Humboldt. However, that’s not a safe bet. Like medical doctors, weed professionals practice EDRR (Early Detection Rapid Response). Now’s the time to begin watching for the plant along the highway and town streets. At this early point in Stinknet’s invasion of Dewey-Humboldt, the best control tactic is pulling and bagging the complete plant including the roots. If the plant spreads, control will become much more difficult and expensive. Like any disease, weed invasions are easier to cure when discovered early.

Stinknet (Copyright Max Licher).

Identification

Stinknet (Oncosiphon piluliferum) Daisy Family—ASTERACEAE.
Annual with persistent roots. Small, less than 2ft tall. One to five or more thin stems arising from base, sparse alternate leaves, striking yellow flowers in small tight balls less than 10mm diameter. Stinky.

Saving Coldwater Farm

Conservation Easement Nearing Completion

Thanks to generous donors, the Coldwater Farm conservation easement is almost complete. During the spring we’ve had several guided bird walks to reward contributors. The walks were led by ornithologists Ryan Crouse and Carl Tomoff. A final walk, for contributors of $1,000 or more, is in two weeks. It will be led by field ornithologist Felipe Guerrero and will be followed by a picnic breakfast in the Farm’s bird garden. (Photo: Rare Black Hawk at Coldwater Farm, Copyright, 2019, Garry Rogers).

The conservation easement will protect the farm from all future development. We will continue to occupy our house and pay property taxes, but no other building will ever be permitted. !

Common Black-Hawk nests at Coldwater Farm. (photo copyright 2019, Garry Rogers).

Biodiversity Loss and Human Extinction

Global Extinction Emergency

Present day human impacts are causing global extinctions comparable in number to the dinosaur extinction of 65 million years ago. Research reports across all plant and animal groups are documenting falling numbers, and the losses are speeding up.

The loss of species and ecosystems is at least as dangerous as climate change. People cause both as we use and harvest soils, plants, animals, and fossil fuels. Soon we will begin to reach the limits of nature’s reserves. As marine fisheries and farming regions lose their productivity, there will be moments when the failure of one region to meet the needs of people will cause demands to shift to other regions. Then, like falling dominos, the cascading failure of ecosystems will force the same desperate international migrations that have already begun due to climate change. The great danger is that once it begins, the cascade of extinction and ecosystem failure will ripple around the world and will be unstoppable.

Here’s a story about the status of international efforts to halt biodiversity loss. As you can see, the extinction emergency is not being treated as an emergency. We need another Greta Thunberg to arise and lead the protest against extinction. And we need it now.

Deforestation in Indonesian to make way for a palm oil concession. Photograph: Ulet Ifansasti/Greenpeace

“The world must thrash out a new deal for nature in the next two years or humanity could be the first species to document our own extinction, warns the United Nation’s biodiversity chief.” —The Guardian.

Saving Nature and Human Civilization

Government Inaction on the Climate Emergency

More than 90% of the countries signing the Paris Climate Agreement have failed to meet their target emission reductions. Some countries, notably the U. S., have instead grown their emissions beyond the worst-case predictions.

BLUNDELL

The original goal was to keep global temperature rise below 1.5 degrees celsius (2.7 degrees fahrenheit). However, national actions that would keep warming below 2 degrees celsius (3.6 degrees fahrenheit) were acceptable. Only three countries are on track to do either of these. Most are on the way to increases of 3 or 4 degrees celsius. Scientist fear that these higher increases will wipe out human civilization.

Government Inaction on the Mass Extinction of Wildlife

At the same time global warming is threatening humanity, global wildlife numbers are plummeting. This itself threatens the survival of human civilization even without the compounding effect of global warming. Under threat here is the soil, the foundation of life on Earth. And in the oceans, the delicate chemical and temperature balance that allows abundant marine life to exist.

The Extinction Rebellion

As the majority of the world’s citizens become aware that both climate and extinction are in danger of spiraling out of control, there are growing efforts to direct our governments to take action. Since the time India separated from the British Empire, we have all known that peaceful demonstration and protest can force major changes. The Student Strike, the progressive politics embodied by the Green New Deal, and The Sunrise Movement are starting to have an impact on government policies. It is essential that these groups welcome and endorse the efforts of the Extinction Rebellion. It is essential that all of us take part in local demonstrations sponsored by these and other groups concerned with avoiding extinction.

 

Photo: Rupert Read

Here are the basic demands of the Extinction Rebellion. I expect these will be expanded in the months ahead:

WE DEMAND:

These demands only represent XR US. They are still in the process of development.

  1. That the Government must tell the truth about the climate and wider ecological emergency, it must reverse all policies not in alignment with that position and must work alongside the media to communicate the urgency for change including what individuals, communities and businesses need to do.
  2. The Government must enact legally-binding policies to reduce carbon emissions to net zero by 2025 and take further action to remove the excess of atmospheric greenhouse gases. It must cooperate internationally so that the global economy runs on no more than half a planet’s worth of resources per year.

  3. We do not trust our Government to make the bold, swift and long-term changes necessary to achieve these changes and we do not intend to hand further power to our politicians. Instead we demand a Citizens’ Assembly to oversee the changes, as we rise from the wreckage, creating a democracy fit for purpose.

  4. We demand a just transition that prioritizes the most vulnerable people and indigenous sovereignty; establishes reparations and remediation led by and for Black people, Indigenous people, people of color and poor communities for years of environmental injustice, establishes legal rights for ecosystems to thrive and regenerate in perpetuity, and repairs the effects of ongoing ecocide to prevent extinction of human and all species, in order to maintain a livable, just planet for all.

The first U. S. XR (Extinction Rebellion) events begin tomorrow.