Science

Clever orchard design for more nuts

Published

2 years ago

March 4, 2023

Daily News Staff

International research team investigates pollination performance in macadamia plantations

image Nuts — Credit: Mina Anders
Unripe nuts hang in bunches on the tree. Insect pollination of the macadamia flowers was essential for successful nut production.
*« Clever orchard design for more nuts*

Newswise — To reduce biodiversity loss in agricultural landscapes, more sustainable and environmentally friendly agricultural practices are needed. A research team from the Universities of Göttingen and Hohenheim in Germany, and Venda in South Africa, investigated how ecosystem services such as pollination could be improved in macadamia plantations. The scientists showed that a certain design of plantations – for instance, how the rows of trees are arranged, the varieties, and the integration of semi-natural habitats in and around the plantations – can increase the pollination performance of bees. The results were published in the Journal of Applied Ecology.

The research team first investigated the role of insect pollinators in the nut production of macadamia trees. “Insect pollination of macadamia flowers is essential for production. A complete loss of insect pollinators would reduce the amount of nuts by 75 percent,” says Professor Ingo Grass, Head of the Department of Ecology of Tropical Agricultural Systems at the University of Hohenheim. To find out which conditions encourage pollinators, the researchers observed and counted the bees and other insects on the macadamia flowers. “Surprisingly, it is less important how many honey bee colonies were established in the vicinity. The more important factor is how large the proportion of semi-natural habitats is in the vicinity of the plantation, since the majority of pollinators fly from the semi-natural habitats into the plantations,” says first author Mina Anders, PhD student in Functional Agrobiodiversity, University of Göttingen.

The arrangement of the rows of trees in the plantations is therefore particularly important: 80 percent more nuts grew at the edge of the plantation, ie land that borders on semi-natural habitats, than in the middle of the plantation. Directly after flowering, the nut formation increased more than threefold in tree rows planted at right angles to semi-natural habitats, compared to rows planted parallel to the habitats. “Pollinators move more easily from their habitat to the plantations when the rows are perpendicular, as they prefer to fly along the rows rather than through them,” Anders explains. Agronomic practices such as artificial irrigation, on the other hand, did not increase the initial nut formation.

“Given the urgency to reduce the harmful environmental impacts of agricultural practices, we emphasise the enormous potential of supporting ecology through intelligent plantation design and the restoration and maintenance of semi-natural habitats in plantations and the surrounding landscape,” says Professor Catrin Westphal, Head of Functional Agrobiodiversity.

Original publication: Anders, M., Grass, I., Linden, V. M. G. und Westphal, C. Smart orchard design improves crop pollination. Journal of Applied Ecology 2023. Doi: 10.1111/1365-2664.14363

Source: University of Göttingen

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astronomy for hobbyist

Stargazing Delight: Catch the Ursid Meteor Shower This Sunday Morning!

Published

4 hours ago

December 22, 2024

Lynette Young

As we cozy up to the end of another year, a delightful celestial event is gearing up to grace our skies: the Ursid meteor shower! Set to peak in the early morning hours of Sunday, December 22, this final meteor shower of the year offers a charming opportunity for some stargazing, even amidst the hustle and bustle of the holiday season.

A Little Background on the Ursids

Often overshadowed by the more prolific Geminid meteor shower that dazzles us just a week earlier, the Ursids tend to be a quieter affair. This year, their peak aligns perfectly with the winter solstice—the shortest day and longest night of the year. With the celestial display taking place during this time, there’s a unique chance to soak in some twinkling “shooting stars” above a snowy landscape.

@stmblog
🌌 Don’t miss the Ursid meteor shower this winter solstice! ✨ Bundle up, head outside, and enjoy the shooting stars! #Stargazing #Ursids ♬ original sound – STMDailyNews

Why Aren’t More People Watching?

Despite their charm, the Ursids are the least observed meteor shower, largely because of the busy holiday season and often unfavorable weather in the Northern Hemisphere—think cold nights filled with clouds. But if you missed the Geminids, fear not! The Ursids provide a wonderful pre-Christmas stargazing treat that is worth a look.

What to Expect from the Ursids

While the Ursids are not renowned for their activity—often delivering a mere 5 to 10 meteors per hour on a good night—there’s still magic in the unpredictability of astronomy. In years past, this meteor shower has surprised us with spectacular displays. Back in 1945 and 1968, observers saw around 100 meteors per hour, while the 1973 shower brought forth about 30 meteors! You never know when the Ursids may decide to put on a show, so keeping your eyes trained on the heavens could lead to some delightful surprises.

Understanding the Ursid Origin

The Ursids get their name from their radiant point in the sky, located in the constellation Ursa Minor, affectionately known as the Little Dipper. What we see as shooting stars are actually small fragments from the comet 8P/Tuttle, which Earth passes through each year. As the debris from the comet enters our atmosphere, it burns up and creates stunning streaks of light against the nighttime backdrop.

Tips for Optimal Viewing

So, how can you maximize your chances of catching the Ursid meteor shower this Sunday?

When to Watch: The Ursids run from December 17 to December 26, with the best viewing time occurring in the predawn hours of December 22. This is when the radiant is highest in the sky, offering the best chance to see those elusive meteors.
Find a Dark Spot: Get as far away from city lights as possible. A clear, dark sky will make it much easier to see the meteors.
Be Patient: Give your eyes time to adjust to the darkness—about 20 minutes is ideal. Bring a comfortable blanket or chair to sit back and enjoy the show.
Check the Weather: Clear skies are essential! Keep an eye on your local weather conditions to ensure a pleasant viewing experience.
Bring a Friend: Stargazing is always more fun when shared! Grab a friend or family member to join you, bringing some hot cocoa for added warmth and comfort.

As you bundle up and head outside this Sunday morning, remember to take a moment to appreciate the vastness of the universe above us. The Ursids may be a modest display compared to their more boisterous meteor shower counterparts, but each little shooting star tells a story of cosmic wonder and beauty. Happy stargazing, and may your sky be filled with twinkling lights! ✨

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unknown

Mysterious Lights Over Oregon: Pilots Report Unusual Aerial Phenomena

Published

3 days ago

December 19, 2024

Rod Washington

This past weekend, the skies of Oregon became the backdrop for an extraordinary event that has both puzzled and dazzled observers. At least four commercial pilots reported encountering unexplained bright lights displaying incredible speeds and erratic movements, renewing interest and debate about aerial phenomena.

The Encounter Details

The first report came from a pilot operating an air ambulance who described a startling experience. A bright, red light zoomed towards his Life Flight plane, only to reverse direction and head back towards the Pacific Ocean at bewildering speeds. The event left the pilot and his crew astounded by the light’s velocity and abrupt maneuvers.

Meanwhile, the pilot of a United Airlines flight over Eugene also reported seeing multiple mysterious objects. These unidentified lights moved vertically and horizontally in patterns that defied easy explanation, with no evidence of military activity in the area at the time.

Adding to the intrigue, the Life Flight pilot noted that one of the lights engaged in a corkscrew pattern, an observation that was corroborated by the aircraft’s collision avoidance system. Air traffic control, maintaining a cautious approach, authorized the pilot to maneuver as necessary to maintain safety.

@stmblog
Spotted strange lights in Oregon’s skies? You’re not alone! UFO sightings are on the rise. #OregonUFOSightings #MysteriousLights 🛸✨ ♬ original sound – STMDailyNews

https://www.tiktok.com/t/ZTYVWd4ew

Visual Evidence and Continued Sightings

Throughout these encounters, several pilots managed to capture brief video clips. These clips, although hard to discern due to the dark conditions, show glimpses of the unusual red, circular lights. Another report from two Horizon Airlines pilots further confirmed that whatever was out there wasn’t isolated to a single incident or observer.

Experts Weigh In: Possible Explanations

In the wake of these mystifying sightings, experts have been quick to offer explanations. Douglas Buettner, a scientist who has researched similar incidents, suggests that these lights could likely be flares from Starlink satellites. Starlink, a constellation designed by SpaceX to provide global broadband coverage, has been known to produce vivid optical flares when its panels reflect sunlight.

Buettner’s research, which includes previous pilot reports and observations, supports the idea that this natural reflection of sunlight could explain the phenomena observed. However, he also admits the current data is insufficient to conclusively rule out other possibilities.

Government and Public Response

Following these reports, the Federal Aviation Administration (FAA) confirmed the sighting of unidentified lights by a pilot, although they have not commented further. In a recent Senate hearing, the Pentagon’s director overseeing unidentified anomalous phenomena indicated a spike in such reports since the launch of satellite constellations like Starlink, underscoring the growing interest and concern regarding these observations.

The Broader Implications

While the most likely explanation for these mysterious lights points to satellite flares, the repeated occurrences of such phenomena continue to stir the public’s imagination and scientific curiosity. As we advance in our technological capabilities, the skies above us grow increasingly populated with human-made objects that can sometimes return to us as bewildering spectacles.

In either case, these events serve as a reminder of the vast and unexplored frontiers above us and the ever-present human quest for understanding the mysteries of our universe. Whether they turn out to be mundane or truly otherworldly, the skies over Oregon this weekend have given us all something to ponder and marvel at.

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New Jersey Drone Sightings: Unraveling the Mystery

Published

4 days ago

December 18, 2024

Rod Washington

In recent weeks, New Jersey has increasingly found itself under the watchful eye of mysterious drones. These sightings have captivated residents and officials alike, leading to widespread speculation and calls for action. Below is a comprehensive update on the current situation regarding drone sightings in the Garden State, including insights from government officials and community reactions.

The Surge of Sightings

Reports of large drones—up to six feet in diameter—flying over various regions of New Jersey have surged since mid-November. Assemblywoman Dawn Fantasia highlighted the unusual characteristics of these drones, often flying with their lights off and evading detection by traditional methods. Though the origin and purpose of these drones remain unclear, many are convinced that they are not the product of hobbyists.

Notably, many sightings have been concentrated near sensitive locations such as the Picatinny Arsenal, a U.S. military research facility, and Trump National Golf Club in Bedminster. Concerns have only intensified since these drones seem to be operating outside the realm of normal commercial or recreational use.

Government Investigations and Assurances

Federal and state law enforcement agencies, including the FBI and the Department of Homeland Security (DHS), have become actively involved in investigating these sightings. Despite receiving over 5,000 tips, officials state that there is currently no evidence suggesting that these drones pose a threat to national security or public safety. Instead, authorities believe that many of the reported sightings can be attributed to legal drones and other aerial phenomena, including misidentified manned aircraft and even celestial bodies like stars.

Governor Phil Murphy has reinforced this perspective, emphasizing that while drone sightings have raised valid concerns, there’s no immediate threat to public safety. The governor has called for federal assistance in the investigation and urged Congress to empower states with more authority to manage drone activities.

Congressional Response and Public Sentiment

The situation has sparked a debate among lawmakers, with some calling for stricter regulations or even a temporary ban on drone flights in New Jersey. Notably, two congressional representatives have gone so far as to request that the military intervene, highlighting the urgency felt by some constituents. U.S. Rep. Jeff Van Drew even suggested that a foreign entity could be behind the sightings, a theory that has been categorically denied by federal officials.

Public sentiment varies significantly, with many residents expressing concerns about the unknown nature of these drones. James Edwards from Succasunna has pointed out the anxiety gripping the community, noting, “There’s so much that’s unknown,” and calling for a measured response to the sightings.

The View from Washington

At the national level, President Joe Biden has responded to the growing unease, asserting that there is nothing nefarious behind the drone sightings. He emphasized the lawful presence of over one million registered drones operating across the country and assured the public that the situation is being closely monitored.

John Kirby, the White House National Security Advisor, reiterated that the majority of drone sightings do not indicate a coordinated threat and stem from common commercial, hobbyist, or law enforcement operations.

What Lies Ahead?

As investigations continue, officials stress the importance of discerning legitimate threats from unwarranted fears. The situation remains fluid, with ongoing dialogues both in Trenton and Washington to address public concerns and craft appropriate regulatory responses.

While the mystery of the New Jersey drones deepens, it’s vital for residents to remain calm and informed. As the investigation unravels the truths behind these sightings, a collective effort from the community, lawmakers, and federal agencies can help ensure safety and transparency in the skies above New Jersey.

Stay tuned for updates as this story continues to evolve, and be sure to report any new sightings or information to the appropriate authorities. Together, we can navigate the complexities of drone activity in our airspace while embracing this new technological frontier.