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Soils could be affected by climate change, impacting water and food
Climate change may reduce the ability of soils to absorb water in many parts of the world, according to a Rutgers-led study. And that could have serious implications for groundwater supplies, food production and security, stormwater runoff, biodiversity and ecosystems…
Oregon State University research shows bright future for agrivoltaics
Oregon is home to more than 37,000 farms across 16 million acres of the state. Our agricultural producers raise animals, supply dairy products, and grow food – and sometimes even generate renewable energy. Wind energy is a good fit in several rural areas of the state where there are strong wind resources and development is compatible with land use and agricultural requirements. While many in the agricultural community have concerns about the ability to farm around solar arrays, for some Oregon farms and ranches, solar development could fit well into their cropping or grazing operations. Such “dual-use development” is subject to rules adopted in 2018 by the Oregon Land Conservation and Development Commission.
Explainer: Global fossil fuel subsidies on the rise despite calls for phase-out
World governments agreed at the COP26 climate summit in Glasgow two years ago to phase out “inefficient” fossil fuel subsidies to help fight global warming.
Since then, however, global fossil fuel subsidies have risen $2 trillion to $7 trillion, according to the International Monetary Fund, as governments around the world moved to protect consumers from rising energy prices.
The importance of old trees
The study analyzed over 20,000 trees across five continents, with a primary focus on trees from the upper canopy, as these trees have stronger carbon sequestration ability and provide fundamental ecosystem services such as microclimate buffering and habitat provision to other organisms than forest components…
Climate warming from managed grasslands cancels the cooling effect of carbon sinks in sparsely grazed and natural grasslands
Grasslands absorb and release carbon dioxide (CO2), emit methane (CH4) from grazing livestock, and emit nitrous oxide (N2O) from soils. Little is known about how the fluxes of these three greenhouse gases, from managed and natural grasslands worldwide, have contributed to past climate change, or the roles of managed pastures versus natural grasslands.
Monarch butterflies wintering in Mexico drop to second-lowest level ever recorded
Recent years have seen some hope for the migrating monarch butterflies, with a 35% increase in the number of butterflies observed overwintering in Mexico during the 2021 to 2022 season compared to the previous year.
But monarch butterflies face three primary threats, including habitat loss for their breeding and overwintering; the use of pesticides, which can be toxic to the butterflies or can kill their food source, milkweed; and climate change, which can shift their migratory patterns. By the 2022 to 2023 overwintering season, World Wildlife Fund reported a 22% drop in the amount of overwintering monarch butterflies in Mexico…
Bee declines driven by combined stress from parasites, pesticides, and lack of flowers
Bees are subject to numerous pressures in the modern world. The abundance and diversity of flowers has declined; bees are chronically exposed to cocktails of agrochemicals, and they are simultaneously exposed to novel parasites accidentally spread by humans. Climate change is likely to exacerbate these problems in the future. Stressors do not act in isolation; for example, pesticide exposure can impair both detoxification mechanisms and immune responses, rendering bees more susceptible to parasites. It seems certain that chronic exposure to multiple interacting stressors is driving honey bee colony losses and declines of wild pollinators, but such interactions are not addressed by current regulatory procedures, and studying these interactions experimentally poses a major challenge.
Pollinator deficits, food consumption, and consequences for human health: A modeling study
Animal pollination supports agricultural production for many healthy foods, such as fruits, vegetables, nuts, and legumes, that provide key nutrients and protect against noncommunicable disease. Today, most crops receive suboptimal pollination because of limited abundance and diversity of pollinating insects. Animal pollinators are currently suffering owing to a host of direct and indirect anthropogenic pressures: land-use change, intensive farming techniques, harmful pesticides, nutritional stress, and climate change, among others.
The role of climate change in pollinator decline across the Northern Hemisphere is underestimated
•Pollinator conservation strategies lack climate adaptation initiatives.
•Climate change drives homogenization at three levels of pollinator biodiversity.
•Rarely measured aspects of biodiversity tend to be most affected by climate change.
•Seldom considered dimensions of climate change tend to be particularly detrimental.
•Pollinator decline might be especially pronounced due to dispersal limitation….
More flowers are ‘selfing,’ scientists say. That could spell trouble for other species
Other recent studies have found that declining pollinator populations, an offshoot of harmful human activities, threaten the future of food crops and the survival of the many species that depend on them.
The growing body of research bolsters the case for urgent conservation measures — like developing and protecting flower-rich habitats that act as floral and nesting resources — to help stymie global pollinator declines, according to Acoca-Pidolle…