Tag: "rainforest" at biology news
Why the Amazon rainforest is so rich in species
...as of south and central America such as the Amazon rainforest
are home to some 7500 species of butterfly compare...in species evolution. He said: "Different types of rainforest
butterflies in the Amazon basin are evolving at very different rates, not at all the pattern expecte...
Ability to capture large prey may be origin of army ants' cooperative behavior
...cies and their activity at four New World tropical rainforest
sites in Costa Rica, Panama, Venezuela and Ecuador. The research was funded by the National Geographic Society....
Satellites show Amazon parks, indigenous reserves stop forest clearing
...lite data to demonstrate, for the first time, that rainforest
parks and indigenous territories halt deforestation and forest fires. According to Nepstad, "Protecting indigenous and traditional peoples' lands and natural areas in the Amazon works to stop deforestation. The idea that many parks in the tropic...
Study of tropical forests worldwide reveals that nature encourages diversity
...iverse. They range from dense and species-rich wet rainforest
to drier and more open forest that is often swept by fires. Even so, all the forests show the same pattern of increasing local diversity as trees age. "Each forest in our study is a highly dynamic community," says Kyle Harms, an assistant professor o...
University of Kentucky author captures national attention with 'Lost Mountain'
...le of what scientists regard as the North American rainforest
because of its remarkable density and diversity of plants, birds, and animals. The mountain was also situated in Eastern Kentucky, one of the poorest places in the country, where coal mining has been virtually the only industry for more than a centur...
Amazonian terra preta can transform poor soil into fertile
The search for El Dorado in the Amazonian rainforest
might not have yielded pots of gold, but it has led to unearthing a different type of gold mine: some of the globe's richest soil that can transform poor soil into highly fertile ground. That's not all. Scientists have a method to reproduce this soil...
Vital organs in the Earth system: What is the prognosis?
...ystems The impacts of human activity on the Amazon rainforest
could result in the collapse of large portions of the rainforest
and significant loss of biodiversity within 20 to 50 years. Nobre draws comparisons with similar eve...
First Amazon-Andean crop plant transfer and corn processing in Peru 3600-4000 years ago
...that people were moving tubers from lowland Amazon rainforest
sites east of the Andes west to the Waynuna site. Maize from Mexico. Maize (Zea mays) cultivation also swept through the Americas in the millennia following its domestication from Teosinte, a wild ancestor from Mexico's tropical Balsas river valley,...
Poison dart frog mimics gain when birds learn to stay away
... a harmless, colorful frog living in the Amazonian rainforest
gets protected from predators not by mimicking its most poisonous neighbor, but by looking like a frog who's poison packs less punch. The Texas biologists studied three species of poison dart frogs--one highly toxic species, one less toxic species an...
Amazon rainforest greens up in the dry season
The Amazon rainforest
puts on its biggest growth spurt during the dry se...m of the Amazon rainforest, the largest old-growth rainforest
on the planet, is crucial for understanding how rainforests and other tropical biomes function and h...
Developing nations may save the tropical forest
...he international magazine New Scientist, a leading rainforest
biologist from the Smithsonian Tropical Research Institute in Panama argues that a new initiative by developing nations offers great promise to help reduce the rampant rate of tropical forest destruction. William Laurance, a Smithsonian scientist who...
Diverse tropical forests defy metabolic ecology models
...ndly understory shrubs to enormous buttress-rooted rainforest
giants festooned with vines and peppered with orchids, ferns and bromeliads. Tropical trees depend on animals for pollination and seed dispersal and are constantly assaulted by insects, fungi, maelstrom and machete. Furthermore, soils, rainfall, th...
Female guppies risk their lives to avoid too much male attention
...males. Observing wild population of guppies in the rainforest
of Trinidad, the researchers found that female guppies swim in habitats that contain few males but many predators. "Male guppies spend most of their time displaying to females. But if their courtship displays don't impress the females, males will at...
The vicious cycle of rainforest destruction
...he two major vegetation systems in the tropics are rainforest
and savanna. As it gets warmer and drier the rainforest
gets invaded by savanna, which has fewer trees and holds less carbon in the soil. Savanna also doesn...
Most extensive survey ever of world's tropical forests shows upward trend in sustainable management
...onomically rewarding. "This is why large areas of rainforest
are being turned into soybean fields or oil palm plantations," said Sobral. "Illegal logging, inexpensive plantation wood and trade barriers are undermining efforts to create legitimate markets that support producers who want to manage natural forest...
Butterfly farming to help save rain forest
...in Guyana that will help support 5000 people in 16 rainforest
communities and help save the rainforest
itself. The University of Warwick team will work with the Iwokrama International Centre for Rain For...
Liquid Jungle Lab environs -- home to five new species
...a project to conserve a starkly beautiful piece of rainforest
on Coiba Island"then a penal colony-- about 10 miles southwest of Bahia Honda. After publishing the Flora y Fauna de Parque Nacional de Coiba in 1997, he didn't expect to return to Panama. But in February 2000 he did return-- at the request of two...
Primates take weather into account when searching for fruits
...s from dawn to dusk over 210 days in their natural rainforest
habitat of Kibale Forest, Uganda, the scientists obtained an almost complete record of their foraging decisions in relation to their preferred food, figs. The data showed that the monkeys were more likely to revisit fig trees (in which they had found...
Tropical rainforest nutrients linked to global carbon dioxide levels
...rbon balance, but that has largely revolved around rainforest
vegetation and its ability to 'take up' carbon dioxide," said Caldwell. "This is a new look at tropical rainforests and their relationship to carbon dioxide levels on Earth." The study showed that when phosphorus or nitrogen -- which occur naturally...
Agriculture and tropical conservation: rethinking old ideas
...ewed studies of biodiversity in the Atlantic coast rainforest
of Brazil, a region that is unusual in having areas of tremendous biological variety adjacent to highly developed, industrialized areas. "The area has some of the highest biodiversity in the world, but it all occurs in fragments of forest," Vanderm...
1 2 3 4