Invasive plants could become even more prevalent and destructive as climate change continues, according to a new analysis of data stretching back more than 150 years.Writing in the journal PLoS ONE, the Harvard University scientists who conducted the study say that nonnative plants, and especially invasive species, appear to thrive during times of climate change because they’re better able to adjust the timing of annual activities such as flowering and fruiting.“These results demonstrate for the first time that climate change likely plays a direct role in promoting nonnative species’ success,” says author Charles C. Davis, assistant professor in Harvard’s Department of Organismic and Evolutionary Biology. “Secondly, they highlight the importance of flowering time as a trait that may facilitate the success of nonnative species. This kind of information could be very useful for predicting the success of future invaders.”Davis and his colleagues analyzed a data set that began with Henry David Thoreau’s cataloging of plants around Walden Pond in the 1850s, when the famed naturalist kept meticulous notes documenting natural history, plant species occurrences, and flowering times. Since then, the mean annual temperature around Concord, Mass., has increased by 2.4 degrees Celsius, or 4.3 degrees Fahrenheit, causing some plants to shift their flowering time by as much as three weeks in response to ever-earlier spring thaws.“We set out to use this data set to examine which plants have been the beneficiaries of climate change,” Davis says. “Our research suggests quite decisively that nonnative and invasive species have been the climate change winners. Climate change will lead to an as-yet-unknown shuffling of species, and it appears that invasive species will become more dominant.”Davis and colleagues compared a plethora of plant traits — everything from height at maturity to flower diameter to seed weight — against species’ response to more than a century and a half of climate change. Alone among all these traits, plants that have fared well share a common phenology, a suite of traits related to the timing of seasonal events such as flowering, leaf growth, germination, and migration.By contrast, many plants with a less flexible flowering schedule — and thus prone to flowering at suboptimal times — have declined in population, in many cases to the point of local extinction.The current work builds on a 2008 paper by Davis and colleagues that showed that some of the plant families hit hardest by climate change at Walden Pond include beloved species like lilies, orchids, violets, roses, and dogwoods. The scientists also reported that some 27 percent of all species Thoreau recorded from 1851 to 1858 are now locally extinct, and another 36 percent are so sparse that extinction may be imminent.“Invasive species can be intensely destructive to biodiversity, ecosystem function, agriculture, and human health,” Davis says. “In the United States alone the estimated annual cost of invasive species exceeds $120 billion. Our results could help in developing predictive models to assess the threat of future invasive species, which may become greatly exacerbated in the face of continued climate change.”Davis’ co-authors on the PLoS ONE paper are Charles G. Willis of Harvard and Duke University, Brad R. Ruhfel and Jonathan B. Losos of Harvard, Richard B. Primack of Boston University, and Abraham J. Miller-Rushing of the USA National Phenology Network and the Wildlife Society. Their work was supported by Harvard University.
Everton Manager Carlo Ancelloti Some analyst has tipped Everton to have an easy victory against the visitors basing their submission of past records. Read Also Ndidi’s surgery successful, says Rodgers Everton have never lost in the five Premier League meetings between Everton and Brighton (four wins and a draw) with the Toffees winning both games at Goodison Park. Brighton on the other hand have never won away against Everton in any competition, drawing two and losing five of their visits. Everton Manager Carlo Ancelotti though unhappy to have Nigerian international Alex Iwobi and Ivorian international Jean-Pierre Gbamin on the sidelines following injuries, he is however delighted that there are no other injury worries ahead Saturday’s clash against Bright & Hove Albion. The former PSG and Real Madrid manager is equally happy that midfielder Andre Gomez is bouncing back to form suffering dislocation last November. Everton have recorded two loses two victories and a draw in the last five matches including a lone goal loss to Liverpool in the FA Cup. The Toffees are 11th on the log with 25 points in 21 matches with Ancelotti eager to steer the side to the top four. Brighton who will be parading Super Eagles defender Leon Balogun have only managed a victory against Bournemouth the last five matches with last match against Sheffield Wednesday in the FA cup ended in lone goal defeat for Balogun and his teammates.Advertisement FacebookTwitterWhatsAppEmail分享 Loading… Promoted Content6 Extreme Facts About HurricanesArchaeologists Still Have No Explanation For These DiscoveriesWho Is The Most Powerful Woman On Earth?6 Incredibly Strange Facts About HurricanesTop 10 Most Romantic Nations In The WorldThe Very Last Bitcoin Will Be Mined Around 2140. Read More10 Irresistibly Cute Albino Animals That Will Make You Day7 Universities In The World Where Education Costs Too Much11 Most Immersive Game To Play On Your Table TopBest & Worst Celebrity Endorsed Games Ever MadeThese Popular Hollywood Stars Got Their Start On Soap OperasWhat Happens To Your Brain When You Play Too Much Video Games?
Two weeks ago, the connection wasn’t there. Drew Allen’s still getting more comfortable with everyone, but less than a month ago he and Ashton Broyld didn’t quite have the chemistry in place.But two weeks is a long time. On Saturday, in Syracuse’s 23-17 loss to Penn State in the New York’s College Classic, Broyld was Allen’s favorite target.“It wasn’t that way early, and I think all the receivers are getting more and more comfortable as he goes,” Orange quarterbacks coach Tim Lester said. “And that will continue to develop over time.”Allen targeted Broyld eight times, completing four passes for 46 yards including a 27-yard strike across the middle for Allen’s first chunk play of the game.Broyld, who’s listed on the roster as a running back, on the depth chart as an H-back and primarily played in the slot, said Tuesday that he and Allen were developing a strong rapport.AdvertisementThis is placeholder textHe’s gaining a bit of extra comfort with a more clearly defined role in the offense and was on the field in most of Syracuse’s offensive packages at MetLife Stadium.“I think he’s benefiting,” Orange head coach Scott Shafer said. “He had a couple opportunities, made a couple plays, had a couple missed assignments, but he’s young. We’ve got three more seasons with him, so we’ve just got to keep finding him ways to get the ball in space and that’s a good place to start.”Broyld committed a personal foul and dropped some passes, but otherwise was an entirely different player than he was last season.In 2012, the only time he was a factor was in a win over Stony Brook. A year later, he’s a staple of the offense and not only SU’s most explosive receiving option, but perhaps also its most consistent.He wasn’t only a factor in medium- and long-range passes, but he was also a popular check-down option for Allen, who needed one in his first-ever start. Wide receiver JarrodWest had just 22 yards. Adrian Flemming had just 18.“Unfortunately we didn’t make the plays that we needed to make to win the game,” Broyld said. “That’s where we fell short.”After the game, Broyld deflected almost every question about his own play. He didn’t comment on his budding chemistry with Allen or how a new role may be benefitting him.Instead, he talked about the team, about what the Orange needs to improve on going forward. There’s time to improve, but Broyld’s suddenly ahead of the curve.“It’s a long season,” Broyld said. “We still have plenty of games left to play. Hopefully we just get better and better each day.” Comments Facebook Twitter Google+ Published on August 31, 2013 at 10:34 pm Contact David: [email protected] | @DBWilson2