Articles tagged with Seasonal Changes
A new international study suggests that starvation is contributing to the mortality of gray whales along the west coast of Mexico, USA, and Canada. The researchers used drone photogrammetry to measure the body condition of the whales, which showed a marked decline in juvenile and adult gray whales visiting Laguna San Ignacio.
Researchers analyzed tree rings in Alaska to understand the climate's response to the 1783 Laki Volcano eruption. They found that tree growth stopped suddenly after the eruption, suggesting a sudden cooling at the end of the growing season.
Researchers found the error source of a sea-ice model varies with the season, leading to discrepancies between simulations and observations in both cold and warm seasons. The study suggests using an ensemble approach to consider seasonal variations in model errors, improving future simulation and prediction of Arctic sea ice.
Researchers studied a 40-year-old bunchgrass prairie in Montana and found that climate change is altering the ecosystem. Annual aboveground primary production increased by 110%, but plant composition changed with a 108% increase in invasive species, while dicot non-grass plants decreased by 65%.
Researchers analyzed acoustic data from humpback whale songs to track population changes in the North Pacific. The study found a significant decrease in acoustic energy levels between 2014-15 and 2018-19, mirroring the declining number of whales during this period.
The article highlights various Christmas-related health risks, including arsenic poisoning, injuries from falls and slips, and gastrointestinal problems. The authors argue that while some sources suggest the benefits of Christmas outweigh its harms, they themselves found no strong evidence of widespread adverse effects.
Research by Mariana Muñoz-Romo and colleagues found that male fringed-lipped bats produce larger, more pungent forearm crusts in males with higher testosterone levels and larger testes. These findings suggest that the size of the crust is linked to mating and reproduction.
New research from Portland State University predicts an increase in wildfire hazard in the Clackamas Basin by mid-century due to projected changes in temperature and relative humidity. This could lead to longer fire seasons and more severe fire weather, resulting in larger, more frequent fires.
A study found that warmer springs in southern Illinois allow prothonotary warblers to start laying eggs earlier, increasing the chances of raising two broods of offspring. This adaptability may provide a reproductive advantage for the birds, but could be threatened by continued climate change.
Researchers predict soybean maturity date within two days using drone images and artificial intelligence, greatly reducing the need for boots on the ground. The developed model performs well independent of data collection frequency, accounting for variables such as image quality and location.
Research reveals Xylella fastidiosa transmission peaks in July and August, affecting grapevine Pierce's disease in California. The study suggests late-season infections are more likely to persist, highlighting the need for regionally specific data.
Researchers discovered moulins in Greenland ice sheet are much larger than previously thought, with extra volume influencing the ice sheet's stability and movement towards the sea. The study's findings add to knowledge of how meltwater interacts with the base of the ice sheet.
A new study reveals that footballers are conserving energy for intense bursts in games with congested fixture lists. Coaches are also rotating players more frequently to manage fatigue and injury risks, particularly among central defenders. The findings highlight the impact of fixture congestion on player performance and team management.
Researchers from the University of Sydney have reconstructed ancient seasonal migration routes of Bronze Age herders in Xinjiang using satellite imagery and archaeological evidence. This innovative methodology provides new insights into how Bronze Age people adapted to life in the region and capitalised on available resources.
By 2100, the vernal window could be 2-4 weeks longer in the northeast, leading to reduced melting snow and detrimental effects on spring conditions. This shift may render states like Connecticut and Pennsylvania snow-free, altering river dynamics and ecosystems.
Researchers found that small loans during the lean season led to higher quality of life, increased agricultural output, and greater wages. The study's results validated the importance of seasonal variability to rural farmers' livelihoods, highlighting the need for economic interventions that account for this factor.
Research shows malaria parasites can remain dormant in human blood stream during dry season, re-emerging when mosquito populations resurge. The parasite alters gene expression and uses spleen to evade immune system detection.
UC Santa Barbara researchers modeled the spread of SARS-CoV-2 in different temperatures and relative humidities. They found that respiratory droplets can travel longer distances than recommended social distancing guidelines, especially in cooler environments. The study suggests aerosol transmission may be more significant in summer, re...
A new study from Binghamton University suggests that coaches who focus on transformational leadership can help athletes become less reliant on them over time. This means that coaches who inspire and mentor their players to achieve their full potential are more likely to have a positive impact on their development.
Research shows that Impala's mixed feeding strategy makes them abundant despite non-migratory nature, rivaling migratory grazers like wildebeest. This adaptation helps them thrive in savannas with seasonal food availability changes.
Researchers found that blue whales sing mainly at night during the summer feeding season, but switch to daytime singing when preparing to migrate. This discovery may explain inconsistencies in whale song patterns.
Researchers found that pairs of shorebirds that successfully raised chicks were more likely to divorce than those that failed. In contrast to other bird species, unsuccessful pairs tended to stick together and try again.
As temperatures rise, tree swallow populations are shifting their egg-laying dates forward by up to 13 days. This shift is linked to increased risk of mass chick mortality due to reduced aerial insect availability during cold snaps, highlighting the complex impacts of climate change on animal life cycles.
A recent study found that nonnative plant invasions can occur through hitchhiking seeds on shipping containers, with potential risks to agriculture and native ecosystems. The researchers propose strategies such as liquid pre-emergent herbicide application and inspection for exterior seeds to reduce risk of invasion.
Tropical Storm Paulette set a new record for the earliest 16th named storm of any Atlantic season by 10 days. The storm's organization improved significantly since September 7, with forecasters noting improved convection and wind shear restrictions.
A recent study by Syracuse University researchers challenges the use of Adjusted Plus-Minus (APM) as a reliable metric for evaluating NBA player performance. The study finds that teammates' quality affects a player's APM score, suggesting that APM does not accurately account for individual contributions.
Researchers used Loon LLC's data from high-flying balloons to calculate gravity wave motions, finding larger waves in the tropics during summer and smaller waves near the poles during winter. The study's findings help constrain circulation responses to climate change and improve regional weather forecasts.
A study of Serengeti National Park camera-trap data found that leopard population densities are similar to other protected areas but fluctuate between wet and dry seasons. The fluctuations appear to be driven by the abundance of prey and interactions with other large carnivores like lions.
A study by Louisiana State University researchers found that heavy rainfall in August can suppress crawfish harvest yields in the spring due to low oxygen levels in ponds. Winter temperatures also impact crawfish growth, with freezing conditions slowing it down.
Adrienne Bryant Godwin receives funding to create a performance project exploring human migration through the eyes of four children. The project aims to reflect on global migration issues using artistic expressions, suitable for audiences aged 10 and older.
The American Academy of Sleep Medicine supports eliminating daylight saving time, citing increased risks of motor vehicle accidents, cardiovascular events, and mood disturbances. A recent survey found that 63% of US adults support the elimination of seasonal time changes.
Researchers found a biological switch in the pituitary gland that enables animals to adapt to changing seasons, governed by hormones and genes. The study reveals a crucial role of the circadian gene BMAL2 in seasonal adaptations, shedding light on the underlying processes.
Researchers found that summit success rates doubled to two-thirds of climbers reaching the top, while death rates remained at around 1% since 1990. Improved weather forecasting and safer climbing techniques may contribute to the increased success rate.
A new study found that US adults' flu vaccination rates differ significantly by demographics such as age, insurance status, and chronic conditions. The researchers suggest that boosting vaccination rates requires a concerted public health campaign and proactive primary care outreach strategy.
Researchers found that teams traveling east had higher scoring and predicted win probabilities, while westward travel was associated with lower scores. The unique 2020 NBA playoff format eliminated advantages and disadvantages related to long-distance travel.
A Berkeley Lab study predicts warmer California temperatures will impact cool-season crops like broccoli and lettuce, while warm-season crops like tomatoes may require relocation. The research aims to ensure food security by predicting future climate conditions and informing agricultural response strategies.
Research in Niger links measles outbreaks to rainfall and temperature patterns, revealing a strong annual cycle associated with agricultural labor migrations. Vaccination strategies targeting migrating populations during the rainy season may break this pattern, reducing outbreaks.
A recent study found that human-induced climate change is responsible for changes in global average water availability on land during the dry season. The research analyzed data from 1902 to 2014 and showed a reduction in average water availability at a global level, with some regions experiencing increased humidity.
Brigham-Grette will lecture on her Arctic drilling research, including the longest sediment core ever collected, which provides new knowledge of Arctic climate from 2.2 to 3.6 million years ago. Her work highlights the importance of scientific drilling in understanding natural variability of climate change.
NASA-NOAA satellite imagery reveals the development of Tropical Storm Josephine, which formed from Tropical Depression 11. The storm is expected to continue moving west-northwest and strengthen over the next 48 hours.
A study found that personal content, such as family photos and selfies, receives almost 17% more likes and 31% more comments than policy-focused posts. The study also shows that well-known congress members have significantly more followers.
Research predicts significant rise in East African rainfall due to climate change, with short rains expected to double by 2100. The region's long rains are less sensitive to greenhouse gas forcing and are expected to remain stable.
Research shows that climate change will shift the timing of prescribed burning windows along the east coast of Australia, with some months experiencing more frequent fires. However, the overall number of prescribed burning days is expected to remain similar or even increase in some cases.
Researchers identified two major factors: dry climate and city life, which led to the evolution of Aedes aegypti mosquitoes to specialize in biting humans. In regions with intense dry seasons, these mosquitoes showed a strong preference for human hosts.
A team of researchers found that 73 boreal bird species experienced a contraction in their breeding periods over a 43-year period, with most species starting to breed earlier and ending earlier. The study suggests that warmer temperatures may be causing this shift, allowing birds to take advantage of earlier food availability.
Research suggests that having more flowers and a more diverse bee community could reduce the spread of bee parasites. The study found that when bee communities are at their most diverse, the proportion of infected bees is lowest, and when flowers are at their most abundant, fewer are likely to act as transmission hubs.
Climate shift, forest loss and fires have led to the expansion of Amazon fires beyond flammable savannas to moist tropical forests. The fire season was initialized earlier than two decades ago due to extreme climate events making the forest more vulnerable.
Bird species at mid- to high latitudes have changed their breeding season durations over the last four decades. Climate change has influenced this shift, with some species contracting their breeding periods, typically breeding earlier and having shorter seasons.
Researchers have identified key agronomic traits for high yield in short-duration rice, which can enhance source capacity during grain filling. The new breeding lines yielded 11-38% higher than the most popular short-duration variety, indicating enormous potential for developing improved varieties.
A tracking study of 56 tiger sharks reveals that older sharks travel faster and swim into deeper habitats than juvenile sharks. The analysis also shows that core habitats of tiger sharks overlap with locations designated as Habitat Areas of Particular Concern.
Researchers at Clemson University found that climate change will lead to more extreme wet and dry seasons globally. The study predicts that regions already prone to drought and flooding will be disproportionately affected.
Andean condors flap their wings for only 1.3% of the total recorded flight time, with most time spent gliding and soaring. Flapping is most frequent during takeoffs and in early morning, when thermal updrafts form.
Researchers found that climate change positively impacts yellow-bellied marmot survival during short, wet summers and negatively affects it during harsh winters. This study suggests that certain species may benefit in one season while facing unfavorable conditions in another due to climate change.
A global assessment of heatwaves has found increasing frequency and duration since the 1950s, with regions like the Mediterranean experiencing rapid changes. The cumulative heat metric shows accelerating trends worldwide, but not in heatwave intensity.
Fish are highly sensitive to heat during mating and embryonic stages due to temperature-dependent cardiovascular strain. Climate change may force up to 60% of all fish species to abandon traditional spawning areas.
Climate researchers projected changes in nine monsoon regions across five continents, revealing delayed onset and intensified seasonal fluctuation. The study found that reduced greenhouse gas emissions under RCP2.6 scenario could minimize long-term shifts, while RCP8.5 scenario predicts significant changes.
Tropical Cyclone Boris weakened to a remnant low-pressure area over the Central Pacific Ocean, dissipating by June 30. The NASA-NOAA satellite animation provided an image of the storm's progression from June 26 to June 29.
Deforestation and land-clearing in Brazil's Cerrado biome are degrading weather conditions, reducing corn yields and increasing temperatures. Climate change impacts on the region's agricultural production are a concern for Brazil's food supply.
Exposure to wildfire smoke affects the body's respiratory and cardiovascular systems almost immediately, according to a UBC study. The researchers found that even within one hour of exposure, ambulance dispatches related to respiratory and cardiovascular conditions increased.
During an unusually ice-free season, Adélie penguins in East Antarctica covered more ground while swimming for prey, resulting in shorter dives and increased foraging success. This led to faster chick growth and increased body mass in adult males and females.