Articles tagged with Seed Dispersal
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Researchers at Nagoya University found that about half of wood mice take time to examine nuts before selecting, potentially increasing their exposure to predators. Despite this risk, the extra time investment pays off as picky eaters are more likely to select undamaged chestnuts.
A recent study mapped the evolutionary history of Asia-Pacific Balanophora species, revealing its retained plastids despite losing photosynthetic genes. This allows it to survive entirely as a parasite on specific tree roots, with some species producing seeds without fertilization.
Researchers analyzed seeds from a now-extinct plant population on Nishinoshima, tracing its lineage to nearby Chichijima island. The study found distinct genetic traits and a strong founder's effect due to limited seed dispersal opportunities.
Seeds can achieve speeds up to 29 miles per hour and reach shooting distances of up to 12 meters, propelled by high-pressure explosions. The fruit stem straightens up during ripening, creating an optimal angle for maximum distance.
A study found that three lizard species in Madagascar consume fruits from over 20 plant species and expel viable seeds, indicating their potential crucial role as seed dispersers. This discovery is significant as environmental degradation affects large frugivores like lemurs, but lizards can continue to inhabit degraded environments.
Researchers found a high-velocity star ejected from a globular cluster at an extreme velocity of nearly 550 km/s, suggesting the presence of an intermediate-mass black hole. The star's similarities with the cluster's chemical composition and age provide strong evidence for the IMBH's existence.
A study analyzing nearly 270,000 seed plant species reveals environmental conditions, particularly climate, play a significant role in shaping global plant distributions. Physical barriers have a smaller effect on ancient plant groups that have had longer periods to disperse widely.
Researchers propose a new biological hypothesis that combines tree dispersal modes and mycorrhizal types to explain the latitudinal variation in forest biodiversity. Advanced spatial analysis techniques reveal a negative aggregation–abundance relationship, stronger in temperate forests, which is linked to animal seed dispersal and myco...
A CSU study reveals trees are contracting in response to climate change, failing to regenerate in hottest areas and not expanding into cooler climates. Human-assisted tree migration is proposed as a solution to help forests adapt to climate change.
A University of Liverpool-led study found that climate warming causes a 28% decline in tree growth since 2005 due to temperature-driven changes in seed production. The study also reveals that under warmer temperatures, beech trees shift resource allocation from growth to reproduction.
Scientists have found a consistent pattern of dispersal events where Inga trees migrated from the Amazon to the Atlantic rainforest, highlighting the importance of conserving riverside forests. The study's findings suggest that these 'highways' played a crucial role in shaping the history of biodiversity in the region.
A recent UC Riverside study found that raking dead grass can boost California's native wildflower diversity, reducing fire danger and increasing plant community changes. The simple, low-cost method of removing invasive grass layers allows native seeds to germinate and grow.
Researchers at Kobe University have discovered that ants and camel crickets are crucial in the pollination and seed dispersal of rare parasitic plants. These tiny arthropods play a unique dual role, visiting flowers for pollen and nectar while later feeding on leaves carrying seeds.
Research led by Penn State scientists found that indigenous hunter-gatherer practices played a key role in seed dispersal and genetic diversity of native plants. The study challenged the conventional notion of agriculture and suggested humans impacted plant populations long before farming began.
Researchers have discovered a new plant seed fossil, Alasemenia, which provides insight into the origin and early evolution of wind dispersal strategies in plants. The study found that Alasemenia's three-winged seeds are more adapted to wind dispersal than one, two, or four-winged seeds.
A Kobe University research team found that insects, specifically camel crickets, act as primary consumers of fruit and dispersers of dust-like seeds. The study confirmed the importance of insects in seed dispersal for light-harvesting plants.
Cultivated rice has also evolved into weedy varieties that shatter and are successful in limiting production worldwide. A long abscission zone is a key factor in ease of shattering across various weedy groups, indicating humans' management inadvertently selects for these traits.
A UMaine graduate student's research found that small mammal personalities determine the effectiveness of pilferage in mice and voles. Deer mice were the most accomplished thieves, while individuals with lower body condition and female voles were more likely to pilfer.
A new study by Kobe University has discovered that woodlice and earwigs can disperse seeds they eat, setting a new record for the smallest animals to do so. This finding challenges traditional views on seed dispersal and highlights the crucial role of small invertebrates in ecosystems.
Fruit eating birds play a vital role in forest ecosystems by consuming, excreting, and spreading seeds to allow trees to grow and function. The study found that highly fragmented landscapes restrict bird movement, reducing carbon recovery potential by up to 38 percent.
A study of 8,859 samples from Danish meadows and pastures reveals a decline in plants with large seeds and thin leaves, contradicting theoretical expectations. The data suggests that nature is changing and acting unexpectedly, with fewer weeds and less grazing, despite the expected increase in heavy-seeded species.
Researchers have discovered the oldest known fossils of the Frankincense and Myrrh family in Indian chert, dating back to the Cretaceous period. The fossils were preserved in pyrenes, which are woody dispersal pods that protect seeds from digestion.
Researchers develop a mathematical model that analyzes the future survival of plants in a changing climate by studying how far wind can carry seeds. The model provides fast and reliable predictions of seed movement, considering factors like seed type, plant height, and wind speed.
A new study found that urban waterfowl, including mallards and Canada geese, play a crucial role in spreading native and alien plants through seed dispersal. The birds disperse seeds for both aquatic and terrestrial plants, with mallards focusing on aquatic plants and geese on terrestrial ones.
Researchers at Nagoya University found that field mice store and transport seeds from once-in-a-century flowering sasa bamboo plants, spreading them throughout the forest. The study reveals that mouse body size affects seed caching behavior, with larger mice carrying seeds to safer locations.
A new study by WCS found that overhunting of fruit-eating mammals and birds can lead to a shift in forest composition, resulting in lower carbon storage. The loss of these species changes the ecosystem, making it more challenging for forests to sequester and store carbon.
Researchers found that witch hazel species with heavier seeds can fling them just as fast as lighter ones due to their spring-loaded fruits. The plants' unique mechanism involves the seed capsule drying out and deforming, releasing elastic energy to propel the seed forward.
A new framework has been defined to predict plant species invasiveness, considering factors such as native range distribution and characteristics. The study found that plants with large distribution ranges occupying diverse habitats and multiple dispersal vectors are most likely to become exotic.
A new method developed by the Max Planck Institute of Animal Behavior has counted Africa's largest bat colony using GoPro cameras and artificial intelligence. The estimate puts the colony at between 750,000 and 1,000,000 bats, making it the largest for bats by biomass anywhere in the world.
Flying squirrels in China's southern rainforests use a unique storage method, chewing grooves into nuts and wedging them between branches, to keep them safe from decomposition. This behavior demonstrates their cognitive and engineering skills, potentially contributing to the dispersal of nut-producing trees throughout the forest.
Current measures to protect grasslands in the Qinghai-Tibetan Plateau are damaging the ecosystem and should be stopped. Small burrowing mammals, like the plateau pika and zokor, play crucial ecological roles in maintaining ecosystem health and biodiversity.
The concept of nature's chefs offers a new perspective on species interactions, highlighting the diversity of food-making and preparing species across the tree of life. This interdisciplinary approach aims to inform how people think about food across various disciplines.
Research from Binghamton University highlights the importance of ants in forest regeneration, with over 95% of New York state forests relying on them to disperse seeds. Ants take seeds with fatty rewards back to their nests, protecting them from consumption by rodents and other organisms, promoting a mutually beneficial arrangement.
A team of researchers at Kyoto University found that the brown lemur is responsible for regenerating large fruit trees in Madagascar's Ankarafantsika National Park. The study shows that lemur seed dispersal can lead to a 1.5% survival rate of seeds, contributing significantly to forest diversity.
Researchers studied pollen data from North America's Neotoma Paleoecology Database to understand plant migration patterns and climate fidelity. Most plant species have exhibited long-term climate loyalty over the past 18,000 years, while some plants adapt locally in response to climate change.
The endangered Amami rabbit plays a key role in dispersing seeds for the non-photosynthetic Balanophora yuwanensis plant. Researchers observed that the rabbit consumed both dry fruits and vegetative tissue from the plant, suggesting it serves as a major seed disperser incentivized by the plant's vegetative tissues.
Researchers mapped strategies to minimize impact of mining on rare plants, finding that protecting 30% of threatened species can ensure long-term survival. The model optimizes energy project placement to balance space use and minimize harm.
A new report reveals that animals are key to forest recovery by carrying a wide variety of seeds into deforested areas. Animals disperse over 80% of tree species in the tropics, and their presence near old-growth forests can improve restoration efforts.
A new study reveals that losing endangered fruit-eating animals in the Atlantic Forest could severely disrupt seed-dispersal networks, leaving plants without an effective means to regenerate. Nearly 55% of specialist plant species rely solely on these frugivores for seed dispersal.
A new study by University of Illinois researchers estimates the costs of removing invasive Miscanthus plants, ranging from $85 to $3,316 per site. The study's findings provide valuable insights into the challenges of eradication and highlight the need for accurate research and planning.
Research reveals forest elephants disperse seeds over long distances, aiding timber species regeneration. Logging can be part of conservation efforts when planned and legally conducted.
Researchers found that arctic shrub growth is limited by seed dispersal and fire, not just environmental suitability. The study used high-resolution satellite imagery to estimate shrub expansion in the Arctic region, revealing a discrepancy with previous models.
Rapid seed dispersal by hornets is essential for the short-lived seeds of Aquilaria sinensis due to their vulnerability to desiccation. The hornets consume fruit elaiosomes and deposit seeds in damp shade, allowing germination.
A study found that large mammals and birds essential for seed dispersal in the Atlantic Rainforest are disappearing due to deforestation. In contrast, smaller animals have lower interaction levels with plants.
A University of Illinois-led study reveals a significant decline in tropical forest bird populations, with 70% of understory bird species experiencing a drop of half or more since 1977. The findings highlight the importance of long-term studies and the need to address the lack of data on tropical bird populations.
Researchers used camera traps to monitor interactions between Panama's epiphytic Zamia pseudoparasitica and animals, revealing that a nocturnal tree-dwelling mammal called northern olingos may be responsible for seed dispersal. The study sheds light on the plant's persistence in the forest canopy.
Seed dispersal rates by Central American agoutis are lower in ocelot habitats with high scent presence. This change allows bruchid beetles to attack seeds for longer periods, promoting forest diversification. The study's findings have implications for understanding the ecology of fear and its effects on ecosystems.
A study at the University of São Paulo found that bird species interacting with more plant species have higher evolutionary stability. This is because they occupy central positions in seed dispersal networks, leading to longer lifespans and increased species accumulation.
Researchers found that pepper plant fruit scents contain complex mixtures of volatile organic compounds, including alpha-caryophyllene and 2-heptanol, which attract specific bat species. The study suggests bats use these chemical signals to select ripe fruits and find the specific Piper species they eat most.
A long-term study by the UK Centre for Ecology & Hydrology found that natural regeneration through seed dispersal by birds, mammals, and wind can produce biodiverse and resilient woodlands. The research suggests that incorporating passive rewilding into national planting targets could result in significant cost savings.
The I-Seed project aims to develop intelligent, biodegradable soft robots that mimic plant seeds' behavior to monitor soil and climate parameters. These innovative robots will be used for detecting pollutants, humidity, CO2 levels, temperature, and water quality.
A study found that nonnative birds in Oahu, Hawaii, dominate seed dispersal networks, with most seeds coming from nonnative plants. This shift has significant implications for the island's ecosystems and biodiversity.
Researchers discovered a complex chemical system in the neotropical shrub Piper sancti-felicis that helps it balance attraction and repulsion from wildlife. The plant produces alkenylphenol compounds with antifungal properties, which protect its fruit from harmful fungi but also make it less appealing to seed dispersers like bats.
Researchers found that introduced species have increased mutualistic relationships seven-fold over the past 75 years, reducing ecosystem stability. As geographic isolation breaks down, regions with distinct species combinations are linked, leading to the loss of unique co-evolutionary trajectories.
Researchers discovered a previously unrecorded seed dispersal mutualism between the dry-fruited Balanophora yakushimensis and its avian visitors. The birds obtain nutrients from larger fleshy bracts, while the plants benefit from seed dispersal.
A study finds that crickets and camel crickets help disperse the seeds of the early-diverging orchid Apostasia nipponica. This mutualistic relationship allows both species to benefit from the association, with the insects obtaining nutrients from the pulp and the orchid achieving long-distance seed dispersal.
Researchers found that smaller forest fragments result in fewer species and interactions between plants and seed-dispersing birds. This leads to a loss of ecological functions, including constant forest regeneration, with larger bird species playing a crucial role in dispersing large seeds.
A new manuscript by Dr. Robert Spengler suggests that all earliest traits of plant domestication are linked to a mutualistic relationship in which plants recruited humans for seed dispersal. This concept, known as seed-dispersal-based evolution, explains why the first traits of domestication in crops were similar across different species.
A 600-year study of lava flows on Réunion Island reveals a significant decline in large frugivore species after human colonization, leading to reduced plant diversity. The findings suggest that rewilding projects could help restore native frugivores and promote ecosystem recovery.
The study found that human disturbance increased the proportion of trees with seeds dispersed by animals, leading to a shift towards small-seeded species. These changes could have long-term implications for carbon storage and drought sensitivity in tropical forests.