Tag: 情调苏州工作室

Ecological segregation of two superabundant, morphologically similar, sister seabird taxa breeding in sympatry

first_imgPrions Pachyptila are the most abundant seabirds in the Southern Ocean and comprise two main groups: those with and without bill lamellae to filter zooplankton. With few exceptions, each breeding location supports at most one species from each of these groups. However, Gough Island supports two morphologically very similar, filter-feeding species: broad-billed P. vittata and MacGillivray’s prions P. macgillivrayi. To understand how these two species co-occur in sympatry, we compared the foraging ranges, habitat selectivity, trophic segregation and moult schedules of these species using combined geolocation-immersion loggers. After breeding, both species showed a well-defined westward migration prior to moulting. Moult lasted 11–19 weeks and was significantly longer in MacGillivray’s than broad-billed prions. Moulting birds occurred in specific areas within the Argentine Basin, with little overlap between the two species. Habitat analysis revealed species-specific preferences, in particular sea surface temperature. Activity patterns also differed; MacGillivray’s prions spent more time in flight, which indicates a more active foraging strategy, relying less on filter feeding. Stable isotope ratios (δ15N) in flight feathers were greater in MacGillivray’s prion, which is consistent with its less specialized bill morphology resulting in feeding at a higher trophic level. Inter-specific spatial segregation was observed for most of the tracking period, in large part because broad-billed prions breed roughly 3 months earlier than MacGillivray’s prions. At Tristan da Cunha, 250 km farther north, where only broad-billed prions breed, they departed, moulted and returned significantly later (15–17 days) than conspecifics from Gough Island, providing evidence for character displacement in sympatry with MacGillivray’s prion.last_img read more

Badgers relying on junior tandem

first_imgThe inexperienced University of Wisconsin men’s tennis team framed an inspiring picture for the upcoming fall season after encouraging results at last weekend’s Cincinnati Invitational. Greg Van Emburgh, who enters his second year as Badgers head coach, believes his squad’s competitiveness ranks among the highest in recent UW tennis history.”I think we have a great team this year, it is probably one of the best teams we have had here in a long time,” Van Emburgh said.The coach’s resounding optimism originates principally from two sources: Jeremy Sonkin and Nolan Polley. During the fall season, the talented tandem earned spots in the national preseason Collegiate Tennis Rankings.In singles, Polley ranks No. 74, six spots ahead of Sonkin. Wisconsin has not placed multiple players in the men’s preseason rankings since 2001, a fact which surely strengthens Van Emburgh’s enthusiasm.Nevertheless, Van Emburgh does not wholeheartedly endorse ITA rankings, and he implied Wednesday that Wisconsin might be underrated.”I don’t think the [current] rankings will be a reflection of where the team will be at the end of the year,” he said.Van Emburgh gave no indication as to which player would fill the team’s No. 1 singles spot next spring as both Polley and Sonkin are capable of holding the coveted top position.Polley, last year’s No. 2 singles player, recorded a team-high 30 victories last season. Sonkin’s profile is equally impressive, as he held UW’s No. 1 singles spot and was named an all-Big Ten selection last season.Team injuries are a principal concern for the young coach. Sonkin and Polley each missed this past weekend’s invitational. Sonkin hopes to return to action this Sunday for the All-American Tennis Championships, but Polley’s nagging shoulder injury will force him to miss the team’s next tournament and limit his play during the fall. Despite these setbacks, Polley, Sonkin and the rest of the team practice two hours a day, in a stalwart effort to improve from last year. A large banner hangs prominently at the Nielsen Tennis Center, with boxed-in names of every UW player named to all-Big Ten honors.Jeremy Sonkin believes this team possesses the ability to add at least a couple of names to that banner. “The one thing we were lacking [last year] was the will and the fight to win … but I think we have that this year,” Sonkin said, who credits two newcomers, freshmen Michael Dierberger and Michael Muskievicz, for improving team chemistry.On the contrary, the Badgers’ structural chemistry remains largely unchanged since last year, as Wisconsin lost no one to graduation.Van Emburgh selected his lone senior, Lachezar Kasarov, as team captain for the 2006-07 season. The head coach also recently named Evan Austin, a former player of Van Emburgh’s at Kentucky, the men’s new assistant head coach.”I think he’s going to be one of the top assistants in the country,” Van Emburgh said. “He’s a great guy and [was once a] great player. He’s had wins against [U.S. professional Andy] Roddick and other top players. We are real fortunate to have him here.”The Badgers’ two nationally ranked players, promising pair of freshman, seven returning starters and new assistant head coach gives the team a competitive edge. Van Emburgh has established a new foundation for the men’s tennis program, but perhaps more importantly, as Jeremy Sonkin articulated, he’s trying to instill a strong competitive drive for success.”He wants us to fight and play as hard as we can, It is really a shame to go into matches, with putting as much effort and work as we have into all our practices, to not give everything we have.”last_img read more

Krautman misses pair of field goals in Syracuse’s loss to Cincinnati; Smith continues streak of 100-yard rushing performances

first_imgCINCINNATI — The inconsistency of Ross Krautman, which seemed to have evaporated when he connected on all four field goals against Connecticut, has resurfaced.Krautman went just one for three in Saturday’s 35-24 loss to Cincinnati on Saturday, with one of his misses pulled to the left and the other blocked for the second time this season. It dropped his season average to a lowly 55.6 percent, tied for 10th worst in the country among kickers who have enough attempts to qualify for the rankings.Afterward, Krautman said he planned to go back and look at the film in practice to determine if there was anything wrong with his mechanics. But he insisted that head coach Doug Marrone believes in him, and that he has confidence in himself as well prior to each kick.“Wherever on the field should be the same thing as long as you line up right,” Krautman said.Like the game against Rutgers, Krautman saw one of his kicks blocked as a result of terrific penetration by an opponent. This time it came from the left side, as defensive lineman Brandon Mills surged forward and got his right hand on the football, which appeared to have a low trajectory from the start.AdvertisementThis is placeholder textThe kick would have pulled Syracuse to within 14-13 early in the second quarter.“You miss a field goal, which is really on me,” Marrone said. “I drilled it all week. I just kept hammering home. If you don’t feel comfortable, then you have to make some changes. And that’s coaching. I knew exactly the way they were coming, and we worked on it all week and they couldn’t execute it.“The block is like a turnover in my mind.”Later in the game, Marrone sent Krautman onto the field to attempt a 42-yarder early in the fourth quarter. Syracuse trailed by 11 at the time, and Krautman’s kick would have made it a one-possession game. But he pulled his kick to the left, sealing a Bearcats victory.“The snap and the hold was fine; I just missed the kick,” Krautman said.Marrone OK with officiatingThere were two plays in Saturday’s game that drew the on-field ire of Doug Marrone. He fumed, yelled, cast aside his headset and implored the officials to rule on Syracuse’s favor.The first was an apparent fumble by Cincinnati tailback George Winn on a read-option play by Munchie Legaux. SU linebacker Dyshawn Davis emerged from the pile with the football, parading toward the sideline in celebration as he and his teammates believed the Orange offense would take over inside the Bearcats 20 yard line.But after the play was reviewed, it stood as called with Winn ruled down by contact.“Upstairs, they say it was a fumble. Down on the field, they didn’t really have it,” Marrone said. “They didn’t really know about the recovery issue. Again, the guys worked hard, and as long as they communicate and tell you what’s going on, I’m fine.”Later, Legaux took a quarterback keeper on a first-and-goal from the 5 yard line and raced toward the front right corner of the end zone. He fumbled inches shy of the goal line, with the ball bouncing backward into the field and then out of bounds inside the 1 yard line.Marrone and his players craved a touchback call from the officials, thinking the ball had gone over the goal line and out of bounds through the end zone.But once again the replay confirmed that a close call would swing in Cincinnati’s direction following an official review and explanation.“I thought the officials — it was a great crew, they do a great job, they did a great job of communicating,” Marrone said. “I don’t have any problems with the calls and what they’ve done.”Smith continues to shineFor the third straight game, Syracuse running back Jerome Smith topped 100 yards to carry the offense. He carried the ball 21 times on Saturday for 116 yards and scored his first touchdown of the season.Smith was stopped short of the goal line on consecutive running plays from inside the 5 yard line midway through the third quarter. But on the third try he leaped up and over the offensive line to give the Orange a 24-21 lead.In his last three games, Smith has run for 376 yards and boosted his total to 731 yards on the season. Comments Published on November 4, 2012 at 11:29 pm Contact Michael: [email protected] | @Michael_Cohen13 Facebook Twitter Google+last_img read more