Posts tagged California
No. 20 Buffs Earn Critical Win Over the Washington Huskies
Feb 24th
Story by B.G. Brooks, Contributing Editor, CUBuffs.com
BOULDER – The No. 20 Colorado Buffaloes outlasted Washington 68-61 on Sunday afternoon at the Coors Events Center and took a large step toward securing the No. 4 seed for next month’s Pac-12 Conference Tournament.
The Buffs, winning their seventh consecutive game, improved to 11-5 in the Pac-12 and moved into a fourth-place tie with the Huskies. But Sunday’s win gives CU the head-to-head tiebreaker, and the Buffs’ remaining schedule appears more favorable than the Huskies’ for securing the No. 4 seed.
CU (22-5) closes the regular season with games at Oregon (March 1) and Oregon State (March 3), while UW (19-8) finishes with home games against Pac-12 co-leaders Stanford and California. The conference tournament is March 7-10 in Seattle.
CU had four players in double figures against UW, topped by Arielle Roberson’s 16. Brittany Wilson added 13, with Chucky Jeffery and Jen Reese chipping in 11 each. Five of Reese’s points came in the final 2:55, with her critical pair of final field goals coming after the Huskies had closed to 59-57.
Jeffery, one of three seniors playing their final regular-season home game, added 13 rebounds for her ninth double-double of the season and 29th of her career. Jeffery left the game with 8.5 seconds to play, while seniors Meagan and Brenna Malcolm-Peck came onto the court about three seconds earlier.
Kristi Kingma led UW with 19 points. Aminah Williams added 12, Talia Walton 11 and Mercedes Wetmore 10. Guard Jazmine Davis, the Pac-12’s No. 2 scorer with a 19.7 average, was held to nine points on two of 13 shooting from the field.
CU never trailed by more than three points in the first half, and after Kingma hit a three-pointer to send the Huskies up 16-14, the Buffs launched a 16-3 run that produced a 30-19 advantage.
An acrobatic put-back by freshman Jamee Swan enabled CU to maintain that 11-point lead (36-25) at intermission. The Buffs got 11 first-half points from Brittany Wilson, who was the only player on either team in double figures.
UW opened the game hitting six of its first 11 shots, but made only three of its final 18 attempts to close the first half. CU hit 15 of its 32 first-half field goal attempts (47 percent) and outrebounded the visitors 25-15.
The Huskies scored the first six points of the second half, pulling to 36-31. The Buffs, meanwhile, had Jeffery leave the game with what appeared to be a left ankle injury at the 19:12 mark. But she was back about four minutes later, and her return might have given CU an emotional lift.
After UW crept to within five points, CU went on an 8-1 run and shot ahead 44-32 with 12:41 to play. Roberson scored six of the Buffs’ points during that surge.
But that 12-point CU lead disappeared quickly.
UW, the Pac-12 leader with 8.5 treys a game, put together an 11-0 run that featured treys by Wetmore and Kingma and another three free throws by Kingma. That pulled the Huskies to within one twice in the final 9:58, but an 8-0 CU that included four points by Jeffery opened a nine-point Buffs lead (56-47).
UW wouldn’t roll. The Huskies outscored the Buffs 8-2 over the next three minutes, closing to 58-55 with 3:38 to play, then pulling to 59-57.
But Reese got her pair of monstrous mid-range jumpers to give CU breathing room at 63-57, and the Buffs hit five of six free throws in the final 48.5 to tuck away the win.
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CU scientists seek solution to the mystery of ever-increasing frog deformities
Feb 14th
CU-Boulder amphibian study shows how
biodiversity can protect against disease
The richer the assortment of amphibian species living in a pond, the more protection that community of frogs, toads and salamanders has against a parasitic infection that can cause severe deformities, including the growth of extra legs, according to a new study by the University of Colorado Boulder.
The findings, published Feb. 14 in the journal Nature, support the idea that greater biodiversity in larger-scale ecosystems, such as forests or grasslands, may also provide greater protection against diseases, including those that attack humans. For example, a larger number of mammal species in an area may curb cases of Lyme disease, while a larger number of bird species may slow the spread of West Nile virus.
“How biodiversity affects the risk of infectious diseases, including those of humans and wildlife, has become an increasingly important question,” said Pieter Johnson, an assistant professor in the Department of Ecology and Evolutionary Biology and lead author of the study. “But as it turns out, solidly testing these linkages with realistic experiments has proven very challenging in most systems.”
Researchers have struggled to design comprehensive studies that could illuminate the possible connection between disease transmission and the number of species living in complex ecosystems. Part of the problem is simply the enormous number of organisms that may need to be sampled and the vast areas over which those organisms may roam.
The new CU-Boulder study overcomes that problem by studying smaller, easier-to-sample ecosystems. Johnson and his team visited hundreds of ponds in California, recording the types of amphibians living there as well as the number of snails infected by the pathogen Ribeiroia ondatrae. Snails are an intermediate host used by the parasite during part of its life cycle.
“One of the great challenges in studying the diversity-disease link has been collecting data from enough replicate systems to differentiate the influence of diversity from background ‘noise,’ ” Johnson said. “By collecting data from hundreds of ponds and thousands of amphibian hosts, our group was able to provide a rigorous test of this hypothesis, which has relevance to a wide range of disease systems.”
Johnson’s team buttressed its field observations both with laboratory tests designed to measure how prone to infection each amphibian species is and by creating pond replicas outside using large plastic tubs stocked with tadpoles that were exposed to a known number of parasites. All of the experiments told the same story, Johnson said. Greater biodiversity reduced the number of successful amphibian infections and the number of deformed frogs.
In all, the CU-Boulder researchers spent three years sampling 345 wetlands and recording malformations — which include missing, misshapen or extra sets of hind legs — caused by parasitic infections in 24,215 amphibians. They also cataloged 17,516 snails. The results showed that ponds with half a dozen amphibian species had a 78 percent reduction in parasite transmission compared to ponds with just one amphibian species. The research team also set up experiments in the lab and outdoors using 40 artificial ponds, each stocked with 60 amphibians and 5,000 parasites.
The reason for the decline in parasitic infections as biodiversity increases is likely related to the fact that ponds add amphibian species in a predictable pattern, with the first species to appear being the most prone to infection and the later species to appear being the least prone. For example, the research team found that in a pond with just one type of amphibian, that amphibian was almost always the Pacific chorus frog, a creature that is able to rapidly reproduce and quickly colonize wetland habitats, but which is also especially vulnerable to infection and parasite-induced deformities.
On the other hand, the California tiger salamander was typically one of the last species to be added to a pond community and also one of the most resistant to parasitic infection. Therefore, in a pond with greater biodiversity, parasites have a higher chance of encountering an amphibian that is resistant to infection, lowering the overall success rate of transmission between infected snails and amphibians.
This same pattern — of less diverse communities being made up of species that are more susceptible to disease infection — may well play out in more complex ecosystems as well, Johnson said. That’s because species that disperse quickly across ecosystems appear to trade off the ability to quickly reproduce with the ability to develop disease resistance.
“This research reaches the surprising conclusion that the entire set of species in a community affects the susceptibility to disease,” said Doug Levey, program director in the National Science Foundation’s Division of Environmental Biology, which helped fund the research. “Biodiversity matters.”
The sheer magnitude of the recent study also reinforces the connection between deformed frogs and parasitic infection, Johnson said. Beginning in the mid-1990s reports of frogs with extra, missing or misshapen legs skyrocketed, attracting widespread attention in the media and motivating scientists to try to figure out the cause. Johnson was among the researchers who found evidence of a link between infection with Ribeiroia and frog deformities, though the apparent rise in reports of deformations, and its underlying cause, remains controversial.
While the new study has implications beyond parasitic infections in amphibians, it does not mean that an increase in biodiversity always results in a decrease in disease, Johnson cautioned. Other factors also affect rates of disease transmission. For example, a large number of mosquitoes hatching in a particular year will increase the risk of contracting West Nile virus, even if there has been an increase in the biodiversity of the bird population. Birds act as “reservoir hosts” for West Nile virus, harboring the pathogen indefinitely with no ill effects and passing the pathogen onto mosquitoes.
“Our results indicate that higher diversity reduces the success of pathogens in moving between hosts,” Johnson said. “Nonetheless, if infection pressure is high, for instance in a year with high abundance of vectors, there will still be a significant risk of disease; biodiversity will simply function to dampen transmission success.”
CU-Boulder graduate students Dan Preston and Katie Richgels co-authored the study along with Jason Hoverman, a former postdoctoral researcher in Johnson’s lab who is now an assistant professor at Purdue. The research was funded by NSF, the National Geographic Society and the David and Lucile Packard Foundation.
To view photos and a video about the research, visit http://freshwatersillustrated.org/link/AmphibianDeformities.
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CU Women’s B-ball Team Beats Oregon St. Beavers in Annual Pink Game
Feb 9th
Story by Caryn Maconi, CUBuffs.com
University of Colorado senior guard Chucky Jeffery earned her 1,500th career point and 26th career double-double Friday night in a 61-47 win over Oregon State.
It was a long-awaited return to the Coors Events Center for the Buffs, who wrapped up a four-game California swing with a split against UCLA and USC last weekend.
The CU women wore pink-accented uniforms in honor of the annual “Play 4 Kay” game to support breast cancer awareness.
“It was breast cancer week, and coach talked about attacking because that’s what the women with breast cancer have to do,” said junior guard Brittany Wilson, who grabbed a game-high five steals. “They have to attack, they have to fight. So we came down, we attacked, we came after loose balls, and forced them into those (24) turnovers.”
CU put the heat on the visitors early on, going on a 9-0 run before OSU scored its first basket of the game with 14:09 left in the half.
Wilson said that solid start was crucial for the Buffs, as they were battling a strong defensive team ranked sixth in the nation in blocks at 6.1 per game.
“We knew we had to come out and set a statement or they would keep coming at us,” Wilson said, “and you can’t give a team like that confidence.”
But the Beavers answered back, hitting four three-pointers in five minutes to make it 21-16 with six minutes remaining.
Thanks to a solid 78.6 percent on 14 opportunities from the free throw line, CU was able to hold onto that narrow lead and enter intermission still up five (28-23).
“Oregon State is a good team, they hustle and they scrap the entire game,” Jeffery said. “They weren’t going away, so we knew we had to go on a run and we had to get it up a little bit … that was huge for us to get this win.”
The second half began in a similar fashion as the first, as the Buffs went on a 7-0 run with five straight points by Jeffery and two made free throws by forward Arielle Roberson.
This time, though, the momentum stuck.
Colorado built its largest lead of the game, 15, with eight minutes left on the clock. From there, the Ducks would not pull closer than eight.
Shooting 7-of-10 free throws to end the game, the Buffs widened the gap back to 14 and closed with a 61-47 victory.
Jeffery led the Buffs in scoring with 22 points, adding 11 rebounds and a season-high three blocks. Sophomore forward Jen Reese also scored in double figures with 10 points, while Roberson added nine.
Guard Jamie Weisner was the biggest force on the court for the Beavers, as the freshman scored 22 total points and added seven rebounds; she was the only OSU player with more than seven points.
“Weisner’s tough,” said Colorado head coach Linda Lappe. “She plays so hard, she’s physical, she never quits. She’s a tough matchup for anybody in the league, so you’ve got to give her a lot of credit. She kept them in the game.”
With the win, CU improves to 17-5 overall, 6-5 in the Pac-12 Conference, while OSU falls to 9-14 and 3-8 in conference play.
Colorado returns to the Coors Events Center Sunday at 1:30 p.m. to take on the University of Oregon. After falling to Utah 67-47 Friday night, the Ducks are ranked last in the Pac-12 with a 1-10 record in the conference.
In fact, the Buffs have just one opponent remaining in the regular season, Washington, that is currently ranked higher in the conference standings.
Wilson, however, said her team won’t get comfortable just yet.
“Being in the Pac-12, you never know what team is going to come out,” Wilson said. “You have to play every team and respect them. This is a bottom-to-top hard conference to play, and if you give a team confidence, they’ll keep shooting and keep coming back at you. You don’t want to relax too much.”
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