//www.koonmotors.com/news/earth_climate/drought/ Drought Research. Read where droughts are predicted, and what can be done about them. en-us Fri, 08 Sep 2023 12:54:07 EDT Fri, 08 Sep 2023 12:54:07 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/earth_climate/drought/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/09/230904133132.htm Tropical forests in South America lose their ability to absorb carbon from the atmosphere when conditions become exceptionally hot and dry, according to new research. For a long time, tropical forests have acted as a carbon sink, taking more carbon out of the air than they release into it, a process that has moderated the impact of climate change. But new research found that in 2015 -- 2016, when an El Niño climate event resulted in drought and the hottest temperatures ever recorded, South American forests were unable to function as a carbon sink. Mon, 04 Sep 2023 13:31:32 EDT //www.koonmotors.com/releases/2023/09/230904133132.htm //www.koonmotors.com/releases/2023/08/230831121712.htm As climate change continues to pose severe challenges to ensuring sustainable food supplies around the world, scientists are looking for ways to improve the resilience and nutritional quality of potatoes. Scientists have assembled the genome sequences of nearly 300 varieties of potatoes and its wild relatives to develop more nutritious, disease-free, and weather-proof crop. A team has now created a potato super pangenome to identify genetic traits that can help produce the next super spud. Thu, 31 Aug 2023 12:17:12 EDT //www.koonmotors.com/releases/2023/08/230831121712.htm //www.koonmotors.com/releases/2023/08/230830131925.htm New work could help forest managers predict which forests are most at risk from drought and which will survive. Wed, 30 Aug 2023 13:19:25 EDT //www.koonmotors.com/releases/2023/08/230830131925.htm //www.koonmotors.com/releases/2023/08/230829124821.htm Among the negative impacts of extreme weather events around the world is one that most people may not think of: an increase in child marriages. Tue, 29 Aug 2023 12:48:21 EDT //www.koonmotors.com/releases/2023/08/230829124821.htm //www.koonmotors.com/releases/2023/08/230824150448.htm Despite the rapid increase in severe flooding, a new article indicates recent floods and droughts in the Amazon River Basin may have not yet exceeded the range of natural hydroclimatic variability. Thu, 24 Aug 2023 15:04:48 EDT //www.koonmotors.com/releases/2023/08/230824150448.htm //www.koonmotors.com/releases/2023/08/230823122613.htm Climate impacts such as dry, hot summers reduce the growth and increase the mortality of trees in the Black Forest because they negatively influence the climatic water balance, i.e., the difference between precipitation and potential evapotranspiration. That is the central finding of a long-term study of the influence of climate and climate change on trees in the Black Forest. Wed, 23 Aug 2023 12:26:13 EDT //www.koonmotors.com/releases/2023/08/230823122613.htm //www.koonmotors.com/releases/2023/08/230817163948.htm Research attempts to quantify the value of U.S. property at risk in forested areas exposed to increased ecological disturbance associated with climate change, such as wildfire and tree mortality. Property exposed to such climate risks, especially in California, is project to climb substantially if emission-reduction measures are not taken. Thu, 17 Aug 2023 16:39:48 EDT //www.koonmotors.com/releases/2023/08/230817163948.htm //www.koonmotors.com/releases/2023/08/230814122350.htm With climate change, irrigating more crops in the United States will be critical to sustaining future yields, as drought conditions are likely to increase due to warmer temperatures and shifting precipitation patterns. Yet less than 20% of croplands are equipped for irrigation. A new study finds that by the middle of the 21st century under a moderate greenhouse gas emissions scenario, the benefits of expanded irrigation will outweigh the costs of installation and operation over an expanded portion of current U.S. croplands. The study maps where it makes the most sense to install irrigation for corn and soybeans and if there's enough water to do so. Mon, 14 Aug 2023 12:23:50 EDT //www.koonmotors.com/releases/2023/08/230814122350.htm //www.koonmotors.com/releases/2023/08/230809130645.htm While some parts of the world suffer extreme heat and persistent drought, others are being flooded. Overall, continental water volumes vary so much over time that global sea levels fluctuate significantly too. By combining the hydrological model WaterGAP with GRACE satellite data, a team of geodesists have come up with a new set of data that shows how the total distribution of water over the Earth's land surfaces has changed over the past 20 years more accurately than ever before. Wed, 09 Aug 2023 13:06:45 EDT //www.koonmotors.com/releases/2023/08/230809130645.htm //www.koonmotors.com/releases/2023/08/230809130604.htm If climate models predict that much of tropical Africa will become wetter with a warming climate, then why does it keep getting drier in the Horn of Africa? Wed, 09 Aug 2023 13:06:04 EDT //www.koonmotors.com/releases/2023/08/230809130604.htm //www.koonmotors.com/releases/2023/08/230802162503.htm Researchers have sequenced the complete genome for einkorn wheat, the world's first domesticated crop and traced its evolutionary history. The information will help researchers identify genetic traits like tolerance to diseases, drought and heat, and re-introduce those traits to modern bread wheat. Wed, 02 Aug 2023 16:25:03 EDT //www.koonmotors.com/releases/2023/08/230802162503.htm //www.koonmotors.com/releases/2023/07/230731110726.htm The dry summer of 2018 hit Swedish forests hard -- and hardest affected were the managed secondary forests. Mon, 31 Jul 2023 11:07:26 EDT //www.koonmotors.com/releases/2023/07/230731110726.htm //www.koonmotors.com/releases/2023/07/230725171909.htm In a multi-generation experiment, researchers found microbes helped plants cope with drought, but not in response to plants' cries for help. Instead, the environment itself selected for drought-tolerant microbes. And while those hardy microbes were doing their thing, they just happened to make plants more drought-tolerant, too. Tue, 25 Jul 2023 17:19:09 EDT //www.koonmotors.com/releases/2023/07/230725171909.htm //www.koonmotors.com/releases/2023/07/230721113141.htm In Africa, climate change impacts are experienced as extreme events like drought and floods. It has now been possible to predict and monitor these climatic events, providing early warning of their impacts on agriculture to support humanitarian and resilience programming in the most food insecure countries of the world. Fri, 21 Jul 2023 11:31:41 EDT //www.koonmotors.com/releases/2023/07/230721113141.htm //www.koonmotors.com/releases/2023/07/230717143213.htm Scientists once assumed that flooding and mudslides after wildfires were linked to the waxy coating that builds up on charred soil, preventing water absorption. Researchers found that water flow came from absorbed water in both burnt and unburnt areas, suggesting that water was, in fact, being absorbed into burnt ground. The discovery provides valuable insights into where and when potential flooding and mudslides may occur and how landscapes recover after a wildfire. Mon, 17 Jul 2023 14:32:13 EDT //www.koonmotors.com/releases/2023/07/230717143213.htm //www.koonmotors.com/releases/2023/07/230714113430.htm Tucked into the hillsides of Italy, Portugal, and Spain, some of the world's most famous -- and most difficult to maintain -- vineyards are heralded for their unique flavor profiles and centuries of tradition. But as extreme weather and changing socioeconomic conditions make this so-called 'heroic viticulture' even more challenging, scientists worry these grapes and their cultural histories are at risk. Researchers argue that farmers and scientists must work together to protect some of the world's most celebrated wines. Fri, 14 Jul 2023 11:34:30 EDT //www.koonmotors.com/releases/2023/07/230714113430.htm //www.koonmotors.com/releases/2023/07/230712165119.htm A groundbreaking study reveals the critical yet severely understudied factor of salinity changes in ocean and coastlines caused by climate change. Wed, 12 Jul 2023 16:51:19 EDT //www.koonmotors.com/releases/2023/07/230712165119.htm //www.koonmotors.com/releases/2023/07/230710133054.htm America's forests have a tough time in store for them. Climate change is increasing temperatures and decreasing moisture levels across the country, not a winning combination for trees. Mon, 10 Jul 2023 13:30:54 EDT //www.koonmotors.com/releases/2023/07/230710133054.htm //www.koonmotors.com/releases/2023/07/230710113829.htm Plant roots have their own thermometer to measure the temperature of the soil around them and they adjust their growth accordingly. Through extensive experiments, a team was able to demonstrate that roots have their own temperature sensing and response system. In a new study, the scientists also provide a new explanation for how roots themselves detect and react to higher temperatures. The results could help develop new approaches for plant breeding. Mon, 10 Jul 2023 11:38:29 EDT //www.koonmotors.com/releases/2023/07/230710113829.htm //www.koonmotors.com/releases/2023/07/230703185543.htm Researchers found that the effects of climate change on the intensity, frequency, and duration of extreme weather events, like wildfires, could lead to massive increases in all three. Mon, 03 Jul 2023 18:55:43 EDT //www.koonmotors.com/releases/2023/07/230703185543.htm //www.koonmotors.com/releases/2023/06/230628130412.htm A projected rise in droughts could muddy the waters for painted turtles and some fellow freshwater-dwelling reptiles, says 11 years of data collected by 50-plus undergraduates. Two recent studies based on the data suggest that drought can lower the survival odds, slow the growth and even skew the ratio of female-to-male painted turtles inhabiting the ponds of the Cornhusker State. Those outcomes emerged despite the water level of a sampled pond in southwestern Nebraska remaining relatively steady throughout the observed periods of drought. Wed, 28 Jun 2023 13:04:12 EDT //www.koonmotors.com/releases/2023/06/230628130412.htm //www.koonmotors.com/releases/2023/06/230615183112.htm 气候变化在当前时代已经创建的问题ms for humans such as wildfires and reduced growing seasons for staple crops, spilling over into economic effects. Many researchers predict, and have observed in published literature, an increase in interpersonal violence and homicides when temperatures increase. Violence during climatic change has evidence in history, anthropology researchers say. Thu, 15 Jun 2023 18:31:12 EDT //www.koonmotors.com/releases/2023/06/230615183112.htm //www.koonmotors.com/releases/2023/05/230526183216.htm Researchers have published new findings on how our warming climate will affect the frequency of flash droughts and the risk to croplands globally. Fri, 26 May 2023 18:32:16 EDT //www.koonmotors.com/releases/2023/05/230526183216.htm //www.koonmotors.com/releases/2023/05/230523123748.htm Nontraditional water sources can be deployed to help cope with climate-induced water risks and tackle the increasing water demand for decarbonization of fossil fuel-fired power plants, but that could increase the cost of electricity generation by 8 percent to 10 percent. Tue, 23 May 2023 12:37:48 EDT //www.koonmotors.com/releases/2023/05/230523123748.htm //www.koonmotors.com/releases/2023/05/230522145851.htm Droughts can be good for trees. Certain trees, that is. Contrary to expectation, sometimes a record-breaking drought can increase tree growth. Why and where this happens is the subject of a new article. Mon, 22 May 2023 14:58:51 EDT //www.koonmotors.com/releases/2023/05/230522145851.htm //www.koonmotors.com/releases/2023/05/230511164635.htm Researchers recently published a study that focuses on the Sudbury-Assabet and Concord watershed in eastern Massachusetts, and which links hydrological changes, including floods, drought and runoff, to changing patterns of land use. Thu, 11 May 2023 16:46:35 EDT //www.koonmotors.com/releases/2023/05/230511164635.htm //www.koonmotors.com/releases/2023/05/230511164615.htm An international team has reconstructed the evolution of groundwater in the Great Basin, USA -- one of the driest regions on Earth -- up to 350,000 years into the past with unprecedented accuracy. The results shed new light on the effects of climate change on water supply and provide important insights for the sustainable use of groundwater resources. Thu, 11 May 2023 16:46:15 EDT //www.koonmotors.com/releases/2023/05/230511164615.htm //www.koonmotors.com/releases/2023/05/230510120518.htm 比较单个细胞在玉米、高粱,nd millet reveals evolutionary differences among these important cereal crops, according to a new study. The findings bring researchers closer to pinpointing which genes control important agricultural traits such as drought tolerance, which will help scientists faced with a changing climate adapt crops to drier environments. Wed, 10 May 2023 12:05:18 EDT //www.koonmotors.com/releases/2023/05/230510120518.htm //www.koonmotors.com/releases/2023/04/230426210500.htm 主要涉及80名科学家的合作Europe and South America has identified the regions of the Amazon rainforest where trees are most likely to face the greatest risk from drier conditions brought about by climate change. Based on the analysis, the scientists predict trees in the western and southern Amazon face the greatest risk of dying. They also warn that previous scientific investigations may have underestimated the impact of drought on the rainforest because those studies focused on the central-eastern part of the forest, which is the least vulnerable to drought. Wed, 26 Apr 2023 21:05:00 EDT //www.koonmotors.com/releases/2023/04/230426210500.htm //www.koonmotors.com/releases/2023/04/230417142403.htm Temperature and severe drought can drive movement among herds of Plains bison, says a recent study. The team's GPS-backed data suggests that conserving the once-endangered species could depend on accounting for the climate extremes that Plains bison will likely encounter moving forward. Mon, 17 Apr 2023 14:24:03 EDT //www.koonmotors.com/releases/2023/04/230417142403.htm //www.koonmotors.com/releases/2023/04/230413154232.htm 'Flash droughts' have become more frequent due to human-caused climate change and this trend is predicted to accelerate in a warmer future, according to new research. Thu, 13 Apr 2023 15:42:32 EDT //www.koonmotors.com/releases/2023/04/230413154232.htm //www.koonmotors.com/releases/2023/04/230412153102.htm Researchers have developed an electronic patch that can be applied to the leaves of plants to monitor crops for different pathogens -- such as viral and fungal infections -- and stresses such as drought or salinity. In testing, the researchers found the patch was able to detect a viral infection in tomatoes more than a week before growers would be able to detect any visible symptoms of disease. Wed, 12 Apr 2023 15:31:02 EDT //www.koonmotors.com/releases/2023/04/230412153102.htm //www.koonmotors.com/releases/2023/04/230412131133.htm Soil stores more carbon than plants and the atmosphere combined, and soil microbes are largely responsible for putting it there. However, the increasing frequency and severity of drought, such as those that have been impacting California, could disrupt this delicate ecosystem. Microbial ecologists warn that soil health and future greenhouse gas levels could be impacted if soil microbes adapt to drought faster than plants do. Wed, 12 Apr 2023 13:11:33 EDT //www.koonmotors.com/releases/2023/04/230412131133.htm //www.koonmotors.com/releases/2023/04/230405161420.htm Ponderosa pine forests in the Sierra Nevada that were wiped out by western pine beetles during the 2012-2015 megadrought won't recover to pre-drought densities, reducing an important storehouse for atmospheric carbon. Wed, 05 Apr 2023 16:14:20 EDT //www.koonmotors.com/releases/2023/04/230405161420.htm //www.koonmotors.com/releases/2023/03/230331120355.htm 欧洲森林越来越多是棕色的the course of hot, dry summers. In the scorching summer of 2022, Europe experienced more trees turning brown than ever, with 37% of temperate and Mediterranean forest regions affected. In the three-year meteorological history of low-?greenness events, characteristic weather signals can be found as precursors of the events. Fri, 31 Mar 2023 12:03:55 EDT //www.koonmotors.com/releases/2023/03/230331120355.htm //www.koonmotors.com/releases/2023/03/230328145445.htm In North America's hottest, driest desert, climate change is causing the decline of plants once thought nearly immortal and replacing them with shorter shrubs that can take advantage of sporadic rainfall and warmer temperatures. Tue, 28 Mar 2023 14:54:45 EDT //www.koonmotors.com/releases/2023/03/230328145445.htm //www.koonmotors.com/releases/2023/03/230323103328.htm Some plants can survive months without water, only to turn green again after a brief downpour. A recent study shows that this is not due to a 'miracle gene.' Rather, this ability is a consequence of a whole network of genes, almost all of which are also present in more vulnerable varieties. Thu, 23 Mar 2023 10:33:28 EDT //www.koonmotors.com/releases/2023/03/230323103328.htm //www.koonmotors.com/releases/2023/03/230323103313.htm A new study found drought and heat waves could make air pollution worse for communities that already have a high pollution burden in California, and deepen pollution inequalities along racial and ethnic lines. The study also found financial penalties for power plants can significantly reduce people's pollution exposure, except during severe heat waves. Thu, 23 Mar 2023 10:33:13 EDT //www.koonmotors.com/releases/2023/03/230323103313.htm //www.koonmotors.com/releases/2023/03/230320172624.htm Increases in mortality among Douglas-fir in the Klamath Mountains are the result of multiple factors that have the iconic tree in a 'decline spiral' in parts of the region. Mon, 20 Mar 2023 17:26:24 EDT //www.koonmotors.com/releases/2023/03/230320172624.htm //www.koonmotors.com/releases/2023/03/230317144953.htm A new discovery, reported in a global study that encompassed more than a decade of research, could lead to the breeding of corn crops that can withstand drought and low-nitrogen soil conditions and ultimately ease global food insecurity. Fri, 17 Mar 2023 14:49:53 EDT //www.koonmotors.com/releases/2023/03/230317144953.htm //www.koonmotors.com/releases/2023/03/230315143846.htm A recent review study provides an overview of the planet's freshwater supplies and strategies for sustainably managing them. Wed, 15 Mar 2023 14:38:46 EDT //www.koonmotors.com/releases/2023/03/230315143846.htm //www.koonmotors.com/releases/2023/03/230308084410.htm Research into the ability of a wildfire to improve the health of a forest uncovered a Goldilocks effect -- unless a blaze falls in a narrow severity range, neither too hot nor too cold, it isn't very good at helping forest landscapes return to their historical, more fire-tolerant conditions. Wed, 08 Mar 2023 08:44:10 EST //www.koonmotors.com/releases/2023/03/230308084410.htm //www.koonmotors.com/releases/2023/02/230227132619.htm Scientists reveal that a warming world is increasing human-wildlife conflicts globally. They show that climate shifts can drive conflicts by altering animal habitats, the timing of events, wildlife behaviors and resource availability. It also showed that people are changing their behaviors and locations in response to climate change in ways that increase conflicts. Mon, 27 Feb 2023 13:26:19 EST //www.koonmotors.com/releases/2023/02/230227132619.htm //www.koonmotors.com/releases/2023/02/230223193420.htm Growing wheat in drought conditions may be easier in the future. Researchers found the right number of copies of a specific group of genes can stimulate longer root growth, enabling wheat plants to pull water from deeper supplies. Thu, 23 Feb 2023 19:34:20 EST //www.koonmotors.com/releases/2023/02/230223193420.htm //www.koonmotors.com/releases/2023/02/230222115919.htm East Africa's iconic rangelands -- under threat from climate change and human activity -- have the potential to recover from repeated environmental shocks and degradation, a new study has concluded. Wed, 22 Feb 2023 11:59:19 EST //www.koonmotors.com/releases/2023/02/230222115919.htm //www.koonmotors.com/releases/2023/02/230221180113.htm Missouri is home to an array of natural resources, with forests among the state's most valuable ecosystems. As warmer temperatures fueled by climate change affect ecosystems globally, forests are under stress to adapt to these changes and ensure their survival in a warmer world. Researchers now introduce the 'ecosystem wilting point' concept, which explains how whole forests respond to drought. Tue, 21 Feb 2023 18:01:13 EST //www.koonmotors.com/releases/2023/02/230221180113.htm //www.koonmotors.com/releases/2023/02/230221113015.htm Climate change is aggravating the impact of droughts -- one of the factors that only affect plant physiology -- on all plant ecosystems worldwide. Although new tools have been developed to detect and assess drought stress in plants -- transcriptomic or metabolomic technologies, etc. -- they are still difficult to apply in natural ecosystems, especially in remote areas and developing countries. Tue, 21 Feb 2023 11:30:15 EST //www.koonmotors.com/releases/2023/02/230221113015.htm //www.koonmotors.com/releases/2023/02/230216172200.htm The 2015--2018 summer droughts have been exceptional in large parts of Western and Central Europe over the last 400 years, in terms of the magnitude of drought conditions. This indicates an influence of human-made global warming. However, multi-year droughts have occurred frequently in the 17th and 18th century, although not as severe. Thu, 16 Feb 2023 17:22:00 EST //www.koonmotors.com/releases/2023/02/230216172200.htm //www.koonmotors.com/releases/2023/02/230208124227.htm The collapse of the Hittite Empire in the Late Bronze Age has been blamed on various factors, from war with other territories to internal strife. Now, scientists have used tree ring and isotope records to pinpoint a more likely culprit: three straight years of severe drought. Wed, 08 Feb 2023 12:42:27 EST //www.koonmotors.com/releases/2023/02/230208124227.htm //www.koonmotors.com/releases/2023/02/230206104136.htm Widespread tree scorch in the Pacific Northwest that became visible shortly after multiple days of record-setting, triple-digit temperatures in June 2021 was more attributable to heat than to drought conditions, researchers say. Mon, 06 Feb 2023 10:41:36 EST //www.koonmotors.com/releases/2023/02/230206104136.htm //www.koonmotors.com/releases/2023/02/230202112716.htm Small isolated wetlands that are full for only part of the year are often the first to be removed for development or agriculture, but a new study shows that they can be twice as effective in protecting downstream lake or river ecosystems than if they were connected to them. Thu, 02 Feb 2023 11:27:16 EST //www.koonmotors.com/releases/2023/02/230202112716.htm //www.koonmotors.com/releases/2023/02/230201195447.htm A research team examined what happens to mountain snowpacks when sunny, midwinter dry spells occur in forests impacted by severe wildfire. Wed, 01 Feb 2023 19:54:47 EST //www.koonmotors.com/releases/2023/02/230201195447.htm //www.koonmotors.com/releases/2023/01/230131131003.htm Populations of various species of aquatic insects and other invertebrates respond to flooding and waterway drying due to drought in different ways that can be anticipated, according to a new study that employed a novel method to assess the stability of stream ecosystems. Tue, 31 Jan 2023 13:10:03 EST //www.koonmotors.com/releases/2023/01/230131131003.htm //www.koonmotors.com/releases/2023/01/230131124436.htm A new conceptual framework for incorporating the way plants use carbon and water, or plant dynamics, into fine-scale computer models of wildland fire provides a critical first step toward improved global fire forecasting. Tue, 31 Jan 2023 12:44:36 EST //www.koonmotors.com/releases/2023/01/230131124436.htm //www.koonmotors.com/releases/2023/01/230125104007.htm Europe lacks groundwater -- a lot of groundwater. The continent has already been suffering from a severe drought since 2018. This is confirmed by satellite data. Wed, 25 Jan 2023 10:40:07 EST //www.koonmotors.com/releases/2023/01/230125104007.htm //www.koonmotors.com/releases/2023/01/230124101555.htm Scientists are drawing inspiration from plants to develop new techniques to separate and extract valuable minerals, metals and nutrients from resource-rich wastewater. Tue, 24 Jan 2023 10:15:55 EST //www.koonmotors.com/releases/2023/01/230124101555.htm //www.koonmotors.com/releases/2023/01/230117193011.htm Flooding in Australia's Murray-Darling Basin is creating ideal breeding conditions for many native species that have evolved to take advantage of temporary flood conditions. Scientists have now developed virtual models of the Murray River to reveal a crucial link between natural flooding and the extinction risk of endangered southern bell frogs (Litoria raniformis; also known as growling grass frogs). Southern bell frogs are one of Australia's 100 Priority Threatened Species. This endangered frog breeds during spring and summer when water levels increase in their wetlands. However, the natural flooding patterns in Australia's largest river system have been negatively impacted by expansive river regulation that in some years, sees up to 60% of river water extracted for human use. Tue, 17 Jan 2023 19:30:11 EST //www.koonmotors.com/releases/2023/01/230117193011.htm //www.koonmotors.com/releases/2023/01/230116112626.htm Reducing the number of stomata that rice have makes them more tolerant to salt water, according to researchers. Mon, 16 Jan 2023 11:26:26 EST //www.koonmotors.com/releases/2023/01/230116112626.htm //www.koonmotors.com/releases/2023/01/230111075835.htm Despite recent, torrential rains, most of Southern California remains in a drought. Accordingly, many residents plant trees prized for drought tolerance, but a new study shows that these trees lose this tolerance once they're watered. Wed, 11 Jan 2023 07:58:35 EST //www.koonmotors.com/releases/2023/01/230111075835.htm //www.koonmotors.com/releases/2023/01/230105151229.htm Researchers examine the role of spring heatwaves on the melting rates of mountain snowpacks across the West. They found that in April 2021, record-breaking snowmelt rates occurred at 24% of all mountain snowpack monitoring sites in the region, further compounding the impacts of extended drought conditions. Thu, 05 Jan 2023 15:12:29 EST //www.koonmotors.com/releases/2023/01/230105151229.htm