A 10-year study in Panama's Barro Colorado Island found that liana density increased dramatically due to natural canopy disturbance, with most of the growth attributed to gaps in the canopy. The study suggests that environmental factors like climate change may also be contributing to this phenomenon, but to a lesser extent.
Ancient human societies adapted to tropical ecosystem dynamics, revealing their adaptability and resourcefulness. By studying these past interactions with the environment, scientists can better understand how to conserve tropical environments.
The MPA Guide categorizes MPAs by stage of establishment and level of protection, highlighting the importance of including local peoples in the decision-making process for effective conservation. The guide specifies outcomes for biodiversity and human well-being depending on the chosen level of protection.
Researchers found that bats with high hearing sensitivity to low frequency sounds are more sensitive to prey sounds, such as frog and katydid calls. This suggests that differences in hearing abilities may be a key factor in the diversity of bat species in tropical forests.
Researchers found that one-third of female hummingbirds resemble males, allowing them to feed without being attacked. This phenomenon suggests non-sexual social selection plays a role in the evolution of female ornamentation.
Researchers have discovered that bat pups 'babble' as part of their initial language-learning stage, mirroring human infant babbling. This behavior suggests social feedback is crucial during vocal development in this species, similar to humans.
Researchers found that larger male giraffe weevils pay lower energy costs per gram of tissue than smaller males despite having disproportionately large snouts. The secret lies in the architecture of the snout, which is made up of cheaper-to-maintain cuticle material.
In a study published in Animal Behaviour, Claire Hemingway found that fruit-eating bats prefer two over one option, but are swayed by the third choice. This suggests that diet and environment play a significant role in shaping their decision-making processes.
In a new study, researchers found that punishments, like dropping non-pollinated flowers, enforce cooperation between fig trees and wasps. Contrary to previous findings, some fig species do not eliminate non-pollinating wasps by aborting their own fruit.
Researchers at Smithsonian Tropical Research Institute characterize an acute marine hypoxic event in the Caribbean, impacting brittlestars and corals. The study reveals a resilient microbial community that adapts to deoxygenation, providing insights into the historical context of such events.
A new fossil discovery in Panama's Los Boquerones town has revealed an ancient cashew relative with a lineage dating back over 30 million years. The find supports the hypothesis of tropical species migrating from Eurasia to North America during warmer climate periods.
Smithsonian scientists discovered shark denticles on fossil- and modern coral reefs, revealing changing shark roles over 7000 years. Shark populations declined due to human hunting and habitat loss, impacting ecosystem balance.
Researchers found that non-native species are more successful in the less-diverse Pacific, where they outnumber native species by 30%, compared to the more-diverse Atlantic. Predation also played a crucial role in controlling invasive species, particularly in tropical regions.
A group of women scientists propose changes to the current system, emphasizing equal, diverse, and inclusive mentoring relationships to promote wellbeing and belonging among underrepresented groups. They also advocate for a multidimensional mentorship model that prioritizes mentee wellbeing.
Researchers discovered that sweat bees use patterns in the canopy overhead to navigate, finding their way home even in extremely low light conditions. This unique navigation system has implications for military applications, such as navigation for drones.
Panama has expanded its Coiba protected area, covering 98,228.25 square kilometers, to achieve the 30x30 Initiative's goal of protecting 30% of the world's marine surface nine years early. The expansion protects unique underwater mountain ranges and migratory marine species.
Two new studies show that whale-watching vessels frequently disregard legal guidelines, chasing whales, getting too close to calves, and forcing changes in behavior. Researchers also found that tourist boats surround a single mother and calf, highlighting the need for better conservation efforts.
Asteroid impact led to 45% plant extinction and paved the way for modern tropical rainforests. Plant diversity took over 10 million years to recover after the impact, with flowering plants dominating ecosystems.
Researchers found that nearly nothing is known about the biggest trees and how they die, making them difficult to study. Climate change, severe storms, and droughts are affecting these giant trees, releasing more carbon into the atmosphere.
Researchers successfully extracted DNA from marine shells, revealing insights into the genetics of animal shrinking. The technique sheds light on how animals like lemurs and lizards adapt to human hunting pressure.
A recent study published by Mariana Muñoz-Romo found that odor-producing glands are present in male bats, attracting reproductive females. The research also highlights the importance of timing and chemistry in bat mating systems.
Researchers observed a young vampire bat pup being adopted by an unrelated female after its mother died, revealing intimate details about changing social relationships between the mother, pup, and adoptive mother. The study highlights the importance of grooming and food-sharing interactions in forming these relationships.
Scientists from the Smithsonian Tropical Research Institute synthesize patterns of tropical forest productivity and carbon storage, finding that warm, wet forests with moderately fertile soils store more carbon. The study's findings reveal consistent relationships across regions, influenced by climate and soil conditions.
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.
Researchers found that sea urchins are more affected by low oxygen levels than ocean acidification when exposed to high temperatures. The study revealed that severe heat, hypoxia, and acidity do not have a synergistic effect on the urchins' performance.
Researchers find that invasive canal grass in Panama originated from a sugarcane breeding program in Florida, where over 500 varieties were sent for testing. The plant's DNA matches those from Indonesia and suggests high ploidy levels, making it challenging to control its spread.
Researchers observed wrinkle-faced bats displaying unique courtship behavior, including ultrasonic echolocation calls and trill song sequences. The species' face masks were found to be crucial in attracting females, with males using them to seduce potential mates.
A team of scientists developed machine-learning models to differentiate among several existing Amherstieae legume genera and classified existing pollen accurately over 80% of the time. The results support previous hypotheses suggesting that Amherstieae originated in Africa and later dispersed to South America.
Researchers studied attine ants and their fungal crops, finding that the ants' ability to target specific nutritional needs evolves as they develop more advanced farming practices. The findings suggest that humans can learn from nature's agricultural systems, which prioritize nutritional sustainability over industrial-scale production.
Researchers found evidence that fringe-lipped bats eat other bats and hummingbirds, challenging previous assumptions about their foraging behavior. The study used DNA analysis to understand the bats' diets and behavioral experiments to confirm these findings.
Archaeologists discovered a rare and unusual collection of artifacts at a Classic Maya sweat bath in Guatemala, suggesting the structure was embodied by an amphibian goddess. The offering included human remains, juvenile animals, and stone tools, indicating the community's attempt to appease the goddess for survival.
Researchers found a new species of sea star that clones itself, allowing it to disperse globally and reach the Caribbean. The discovery was made using DNA barcoding and confirms the larvae's ability to clone themselves is a key factor in its distribution.
Researchers found that the formation of the Isthmus of Panama led to a significant reduction in native South American mammal diversity, allowing North American immigrants to thrive. The resulting asymmetry has lasting effects on modern species distribution.
A new species of nemertean was discovered in Panama by Natsumi Hookabe during a Smithsonian Tropical Research Institute workshop. The species, Euborlasia maycoli sp. nov., is the first of its genus to be found in the Caribbean region.
In the early 20th century, José Carlos Amaringo Chico rose to power as an Ashaninka shaman-chief, driven by his unwavering belief in transformation and immortality. He took a strong anti-slavery stance, fueling social liberation movements and achieving a peaceful transition with Seventh Day Adventist missionaries.
Scientists studied giraffe and elephant foraging patterns in Kenyan savannas to understand how megaherbivores impact vegetation. They found that these animals prefer flat ground while feeding, leading to reduced damage on Acacia mellifera trees on steep slopes.
Research at the Panama Canal has recorded 11 new marine fish species, replacing freshwater fishes in Lake Gatun. The Suez Canal expansion also led to increased salt levels, allowing more non-native species to enter the Mediterranean.
Researchers discovered fossil trees on Peru's Central Andean Plateau, revealing a more humid ecosystem than predicted by climate models. The findings support the hypothesis that tectonic uplift occurred in rapid pulses, shaping the region's climate and vegetation.
Researchers found that mother bats adjust their vocalizations to provide positive feedback to their pups during vocal practice, while male bats transmit the social group's vocal signature. This complex parent-offspring communication may be a key feature of bat language development.
Scientists from the Smithsonian Tropical Research Institute have discovered a new species of mud-shrimp, Strianassa lerayi anker, and a highly mobile clam, in Panama's Coiba National Park. The discovery is part of a larger project to better understand the role of microbes in shaping tropical ecosystems.
Interplanting native tree species like rosewood and amarillo with teak in Central America's nutrient-poor soils improves soil health, increases water management, and boosts biodiversity. These findings suggest a more sustainable approach to reforestation and may protect the Panama Canal from flooding and drought.
Researchers found that native lizards harbor parasites controlling invasive species, keeping their populations under control. The study suggests biodiversity is a key factor in resisting invasions.
Research reveals that lightning damages approximately 832 million tropical trees each year, with a quarter of them dying from injuries. The study found that lightning strikes are more frequent in forests, savannas, and urban areas, altering ecosystem dynamics.
Lionfish in Curacao reefs exhibit strong preference for brown chromis over other two prey fish species. The study suggests that lionfish can be picky about their daily menu as long as they are not starving, with poorer condition fish being less selective.
A new bird checklist from Jicarón and Jicarita islands in Coiba National Park reveals 23 previously unrecorded species, including 10 endemic subspecies and 29 migratory birds. The islands' unique terrain supports a variety of bird species, with some rare migrants recorded.
Researchers from Smithsonian Tropical Research Institute analyzed sediment cores and historical records to study the long-term effects of damming on Lake Gatun's ecosystem. The findings highlight the importance of natural river processes in maintaining biodiversity in tropical ecosystems.
A recent study by Smithsonian Tropical Research Institute scientists found that search-phase echolocation calls contain information about a bat's identity, allowing them to distinguish between group members. This discovery could mean these calls serve a double function: aiding prey detection and conveying individual identities.
A team of researchers found that sweat bees switch from solitary to social behavior by repurposing ancient genes, challenging the long-held assumption that new genetic variants are always necessary for evolution. The study provides evidence that environmental influences can drive the evolution of complex traits like social behavior.
Researchers found that maximum daily temperatures above 32.2 degrees Celsius cause tropical forests to lose stored carbon more quickly. The study highlights the importance of protecting tropical forests and stabilizing the Earth's climate.
A new study found that humpback whales are at risk of collision with vessels in the Magellan Strait, with some individuals encountering ships up to 18 times per season. The researchers propose speed limits and mandatory observers on commercial vessels to reduce the risk of injury or death.