Sentences with phrase «liana theodoratou»

liana over at mixed plate asked to do a feature interview with me.

Research into potential feedbacks between liana growth, carbon sequestration, and climate change is ongoing, Jones said.

«However, only one experimental study — a large liana removal experiment in Panama, has proven lower carbon uptake in forest with lianas versus forests where lianas have been removed.»

«We were surprised that [they] appeared to be remarkably robust to the negative impacts of landscape - scale habitat fragmentation caused by reservoir creation,» she noted, «and saw no difference in the liana communities on islands compared to the mainland.»

Jones and her team studied tree and liana communities in 77 study plots scattered across 36 of those islands.

But what do thriving liana communities mean for Balbina in the long - term, and for the Amazon in general, as hydropower development rapidly expands across the basin?

But even so, «we were still expecting to see some effects associated with isolation within a water matrix because, for example, liana seed dispersal across water may have been affected by the severe reduction in vertebrate dispersers seen across the archipelago,» said Jones.

The impact of dams on tree and liana composition «will for sure have an impact on carbon sequestration,» agreed Verbeeck.

For reservoir islands, «a persistent liana community will likely exacerbate the degradation of remnant tree communities,» the scientists warn.

That particular experiment was carried out by Stefan Schnitzer, of Marquette University, as part of a major liana ecology research project.

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By contrast, liana removal increased reproduction in palms and understory plants only slightly.

«Untangling the complex taxonomic history of a Neotropical liana genus.»

When Schultes was in the Amazon in the 1940s, the Seona in Ecuador identified for him 17 varieties of ayahuasca liana, and all of them, to his Harvard - trained taxonomic eye, were the same species.

Many hours later, it leads to an area of protected land called Iwokrama, a Rhode Island - size forest in the heart of Guyana, crowded with ancient buttress - trunked trees draped in liana vines.

The lianas monopolize resources like carbon dioxide — which is rising by 0.5 percent per year globally — eventually covering some trees and pulling them down.

Now a real celestial threat is propagating a different kind of killer plant: Woody vines known as lianas are growing so quickly in the Amazonian rain forest that they're choking trees.

Finally, in a world of rising temperatures, lianas often out - compete tropical trees for resources like light, water, and nutrients.

For Francisco and Lohmann it took three field expeditions to different states of the Brazilian Amazon, combined with deep morphological and molecular studies, to set straight uncertainties in the complex taxonomic history of Pachyptera lianas.

However, while some species have continued to exhibit elevating rates of flower activity in response to higher concentrations of carbon dioxide, others, like certain canopy trees and lianas, have shown more stabilized flowering in recent years.

«We used an integrative approach, which means we combined data from different sources to further understand the taxonomy, evolutionary history and biogeography of Amazonian lianas,» explains Ms. Jéssica Francisco.

«Lianas are important members of tropical forests, constituting ca. 25 % of their species diversity and contributing up to 40 % of leaf productivity.

Of the former, fifty - two species, mostly trees, shrubs and lianas, are listed as threatened — more than those in any other existing forest in Benin.

The advantage was persistent: five years after lianas had been removed, the number of canopy trees with fruits was 150 percent higher, the number of tree species with fruits was 109 higher and fruiting trees had 31 percent more of their canopy covered by fruits.

In a new study published in the African Journal of Ecology, scientists advocate the temporary removal of lianas in selected areas to help tropical forests grow back.

They established 16 experimental plots where all trees and lianas more than one centimeter in diameter were identified to species, tagged, mapped and measured.

Dr Marshall said the problem had been caused by commercial logging, which allowed the lianas to flourish.

Instead of taking decades to recover, tropical forests are at risk of taking hundreds of years to re-grow because of lianas, which spread rapidly following extensive tree - felling.

«We don't have enough data yet to know which species respond well to clearing out lianas, that is the next stage in the research.»

Woody vines, known as lianas, compete intensely with trees and their numbers are on the rise in many tropical forests around the world.

Lianas climb up tree trunks into the sunlit forest canopy, where they spread their leaves and reduce the light available to the very trees that support them.

«Lianas stifle tree fruit and seed production in tropical forests.»

«We don't want to advocate taking all the lianas out of the forest, that would be terrible.

The effects of removing the lianas were dramatic.

«In tropical rain forests, the seeds of 80 to 90 percent of trees and lianas are dispersed by animals.

«We suspected that lianas might have a negative effect on tree reproduction, but the strength of the effect, only five years after cutting the lianas, was surprising» said Maria Garcia León, the lead author, who began working with Schnitzer as an undergraduate at the University of Panama and is now operations manager for the Schnitzer lab.

A new study at the Smithsonian Tropical Research Institute (STRI) in Panama shows that lianas prevent canopy trees from producing fruit, with potentially far - reaching consequences for other plants and animals.

Woody climbing vines, known as lianas, are preventing tropical forests from recovering and are hampering the ability of forests to store carbon, scientists are warning.

What this study suggests is a trend; that lianas are impacting on the tropics but not just in selected sites.»

They repeated these counts again in 2016, five years after the initial removal of lianas.

While previous experimental studies have shown that lianas affect reproduction in single species of trees, this is the first experimental study to demonstrate the effects of lianas on the reproduction of an entire tree community.

Ola Olsson stressed that the present study does not give any definite answers to how the composition of the forests could change, but in his view, there could well be an increase in bushes and lianas.

He dropped the peccary he was carving up, grabbed the lianas he had cut to lash the carcass to his back, and sprinted in the opposite direction, toward the nearby river.

As lianas proliferate in tropical forests, their suppression of tree reproduction could alter the dynamics of forest regeneration and threaten the maintenance of the high diversity of these forests.

However, Dr Marshall says the lianas also help to promote biodiversity and help sustain an abundance of plants and animals — creating «bridges» across the trees, food for monkeys and other animals, and generally adding to the overall function of forests.

In 2011, they cut all of the lianas in eight of the plots, leaving the lianas in the other eight plots for comparison.

Undaunted, Goodman entered stands of wet, green trees dense with tangled bushes and lianas.

The effect of atmospheric CO2 on flowering has diminished over the most recent decade for lianas and canopy trees, whereas flowering of midstory trees and shrub species continued to increase with rising CO2.

Turn the letter - writing event into a botany lesson by explaining to students that there are 18 species of holly and that this plant can be deciduous or evergreen and grow into trees, shrubs, or lianas.