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Category: Ecology

In the fate of the Delta smelt, warnings of conservation gone wrong

In the fate of the Delta smelt, warnings of conservation gone wrong

Sharon Levy writes: Peter Moyle, an eminent authority on the ecology and conservation of California’s fishes, stands on the narrow deck of a survey boat and gazes out over the sloughs of Suisun Marsh. The tall, tubular stems of tule reeds bend in the wind as a flock of pelicans soars past, their white wings edged in black. It’s an idyllic scene that hints at an earlier time, back before the Gold Rush, when undisturbed creeks and tidal marsh covered…

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Worldwide catastrophe as shorebirds face extinction

Worldwide catastrophe as shorebirds face extinction

  John W. Fitzpatrick and Nathan R. Senner write: A worldwide catastrophe is underway among an extraordinary group of birds — the marathon migrants we know as shorebirds. Numbers of some species are falling so quickly that many biologists fear an imminent planet-wide wave of extinctions. These declines represent the No. 1 conservation crisis facing birds in the world today. Climate change, coastal development, the destruction of wetlands and hunting are all culprits. And because these birds depend for their…

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EU agrees total ban on bee-harming pesticides

EU agrees total ban on bee-harming pesticides

The Guardian reports: The European Union will ban the world’s most widely used insecticides from all fields due to the serious danger they pose to bees. The ban on neonicotinoids, approved by member nations on Friday, is expected to come into force by the end of 2018 and will mean they can only be used in closed greenhouses. Bees and other insects are vital for global food production as they pollinate three-quarters of all crops. The plummeting numbers of pollinators…

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The battle to ban plastic bags

The battle to ban plastic bags

A plastic bag floats in the ocean in this 2016 photo. Creative Commons By Sylvain Charlebois, Dalhousie University and Tony Robert Walker, Dalhousie University There are increasing concerns about the use of plastics in our day-to-day lives. Single-use plastics of any kind, including grocery bags, cutlery, straws, polystyrene and coffee cups, are significant yet preventable sources of plastic land-based and marine pollution. In Canada, bans on plastics have so far been left up to municipalities, and some are taking action….

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Land degradation by human activities pushing Earth into sixth mass extinction and undermining well-being of 3.2 billion people

Land degradation by human activities pushing Earth into sixth mass extinction and undermining well-being of 3.2 billion people

  Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES): Worsening land degradation caused by human activities is undermining the well-being of two fifths of humanity, driving species extinctions and intensifying climate change. It is also a major contributor to mass human migration and increased conflict, according to the world’s first comprehensive evidence-based assessment of land degradation and restoration. The dangers of land degradation, which cost the equivalent of about 10% of the world’s annual gross product in 2010 through…

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‘Shocking’ decline in birds across Europe due to pesticide use, say scientists

‘Shocking’ decline in birds across Europe due to pesticide use, say scientists

The Independent reports: Bird numbers across France have declined by a third in the past 15 years, according to new figures released by researchers. Linked to changes in agricultural practices such as pesticide use, the dramatic collapse is comparable with trends observed in other parts of Europe, including the UK. Nevertheless, the latest figures have shocked scientists who previously thought France’s bird population was relatively stable. “We had some idea because when you are working in the countryside you find…

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The immobilization of life on Earth

The immobilization of life on Earth

One of the defining characteristics of life is movement, be that in the form of locomotion or simply growth. What is inanimate is not alive and yet humans, through the use of technology, are constantly seeking ways to reduce the need to move our own limbs. We have set ourselves on a trajectory that, if taken to its logical conclusion, will eliminate our need to possess a fully functioning body as we reduce ourselves to a corpse-like condition sustained by…

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We’re killing our lakes and oceans

We’re killing our lakes and oceans

Eelco Rohling and Joseph Ortiz write: On January 5, 2018, a paper published in the journal Science delivered a sobering message: The oxygenation of open oceans and coastal seas has been steadily declining during the past half century. The volume of ocean with no oxygen at all has quadrupled, and the volume where oxygen levels are falling dangerously low has increased even more. We’re seeing the same thing happen in major lakes. The main culprits are warming and — especially…

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