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Mesozooplankton community composition controls faecal pellet flux and remineralisation depth in the Southern Ocean

first_imgZooplankton faecal pellets (FPs) are important conduits of carbon from the surface to the deep ocean, as shown by their presence in deep-sea sediment traps. Zooplankton themselves are thought to play an important role in the breakdown and reworking of FPs as they sink, whilst processes such as diel vertical migration (DVM) may enhance the supply of carbon to the mesopelagic. However, comparatively little is known about the processes or variability of FP sinking/ transport within the upper mesopelagic and how this relates to deeper ocean export.Profiles of FP type and size, and the contribution made by FPs to mesopelagic carbon flux to a depth of 400 m, were considered. Three contrasting locations in the Scotia Sea were compared, which together reflect the variability in physical regime and productivity encountered across the Southern Ocean.Comparing observed FPs with predictions from the mesozooplankton community, we show that, even at shallow depths, the smallest fraction of FP is under-represented, suggesting rapid remineralisation, incorporation into larger aggregates or reworking into larger FPs, and that the flux is dominated by FPs from larger zooplankton.In contrast to models where POC attenuation rates are set to increase with temperature, we find that FP carbon flux attenuates rapidly in low productivity, colder regions dominated by krill, while remineralisation is deeper in warmer areas where productivity is high and copepods dominate. This emphasises the strong modulation of the zooplankton community on the supply and transfer of FP carbon between the epi- and mesopelagic.Evidence was found to suggest that DVM enhances FP flux across the upper mesopelagic, producing a pulse of fresh, dense material that may support secondary production and heterotrophic respiration in the mesopelagic. This illustrates that variability in flux at short (daily) as well as longer (seasonal) timescales may have important implications for the supply of FP carbon to deeper waters.last_img read more

Watch Kristin Chenoweth Perform ‘Smile’

first_img View Comments Kristin Chenoweth Kristin Chenoweth Show Closed This production ended its run on Nov. 13, 2016 Related Showscenter_img A performance from Kristin Chenoweth can make anyone grin (even a tearjerker like “Smile”). The pint-sized Broadway fave appeared on The Today Show on September 26 to sing the sentimental number from her new album The Art of Elegance, which hit earbuds on September 23. Though the song can definitely provoke waterworks, nothing makes us beam like knowing Cheno is coming back to the Great White Way. (And how about those yellow heels?! Work, girl!) Her Love Letter to Broadway opens on November 2 and is scheduled to run through November 13. Watch the full performance below! Star Files Kristin Chenoweth: My Love Letter to Broadwaylast_img read more

One rig added to weekly U.S. offshore rig count

first_imgThe weekly U.S. offshore rig count rose by one active unit this past week, Baker Hughes, a GE company, said in a report on Friday.Baker Hughes Rig Count: U.S. +1 to 1,082 rigsU.S. Rig Count is up 1 rig from last week to 1,082, with oil rigs up 2 to 888 and gas rigs down 1 to 194.U.S. Rig Count is up 167 rigs from last year’s count of 915, with oil rigs up 150 and gas rigs up 17.The U.S. Offshore Rig Count is up 1 rig to 22 and up 1 rig year-over-year.Baker Hughes Rig Count: Canada +1 to 197 rigsCanada Rig Count is up 1 rig from last week to 197, with oil rigs up 1 to 118 and gas rigs unchanged at 79.Canada Rig Count is down 11 rigs from last year’s count of 208, with oil rigs up 9 and gas rigs down 20.last_img

Lakers, Bulls star in INSPORTS Mini Basketball

first_imgThe final set of preliminary games in the Institute of Sports (INSPORTS) Community Mini Basketball Tournament will be played today at the Breezy Castle Sports Complex on Harbour Street in Kingston.Last weekend, there were six matches – four on Saturday and two on Sunday – in round-robin play at the National Stadium Courts. Majesty Lakers and Rae Town Bulls each scored two victories.The Lakers registered the most comprehensive win, a crushing 24-0 margin against Delacree Young Stars. In other matches that day, Majesty Lakers netted a second win, eclipsing Rae Town Bulls 10-8 in one of the most competitive matches.Rae Town Bulls, however, got better results in their other games as they beat Palm Grove 11-7 and turned back Delacree Heats 6-4.Two games were played on Sunday and Palm Grove pulled off a shocker in the first by hammering Majesty Lakers 20-0. In the other Sunday match, Delacree Heats beat Delacree Young Stars 6-2.In today’s matches, the top two teams on points will meet in the final. Games start at 1 p.m.Meanwhile, Selassie FC ran out the biggest winners in the Kingston and St Andrew leg of the INSPORTS All-Island Community Football League last weekend.BIGWINSelassie FC thumped Mandela 8-0, while four other teams recorded wins. Uplink Youth slammed Kingston and St Andrew Strikers 4-0, Sandy Park beat Future FC 2-0, Majesty Gardens beat Conscious United 2-0 and Dallas Castle clipped Whitehall FC 1-0.Meanwhile, Nannyville Youths drew 2-2 with African Gardens and St Albans and Hagley Park played out a similar scoreline.Also, there were four matches in Westmoreland. Rose Street turned back Grotto 2-0 and Shantilly also won 2-0 over Russia. Stratbogie edged Sholin 1-0, while Innswood and Gully Bank played out a goalless draw.A total of 33 teams are participating the Westmoreland League, which kicked off last Sunday with the four matches and an opening ceremony at the Llandilo playing field.Sixteen games will be played tomorrow at four venues – Llandilo, Godfrey Stewart High, Petersfield High and New Market Oval.last_img read more

Alta Loma 36, Walnut 0

first_imgWALNUT — The Walnut High School football team suffered a disapointing home loss to the Braves of Alta Loma High on Friday night. The Mustangs, 2-3, simply couldn’t catch up with the Alta Loma running game, allowing a total of 294 yards on the ground. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREThe top 10 theme park moments of 2019 Walnut senior running back Richie Reynoso led his team in yardage, picking up 39 yards on the ground. Teammate Xavier Sanchez, the Mustangs’ quarterback, couldn’t seem to get his offense clicking. He passed for only 10 yards and threw one interception. Most of the Braves’ rushing yards came by way of junior running back Jack Rodgers, who ran for 146 yards and three touchdowns on 15 carries. Rodgers wasn’t the only back to get in on the action though as Jeremy Garrett finished with 65 yards rushing and one touchdown. Walnut continues the nonleague portion of its schedule next week when it travels to Bonita to face the Wildcats. The Mustangs open San Antonio League play in two weeks at home against Rowland. @Tagline: Mike Baca Alta Loma improved to 5-0 with the victory. Walnut was dominated from the start, allowing 22 points and gaining only 17 yards on offense in the first quarter. The Mustangs simply couldn’t move the ball, finishing with only 137 yards of offense and turning the ball over twice. center_img 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!last_img read more

Critics be damned, Raiders’ Jon Gruden stays the course

first_imgFor complete Oakland Raiders coverage follow us on Flipboard.ALAMEDA — Jon Gruden isn’t oblivious to public opinion.“Can I sense outside negativity piling on who, me?,” Gruden said Monday at his weekly press conference. “I mean, it’s justifiable. I have a pretty good idea of what this business is all about. But I’m also realistic. I’m also very optimistic.”So while the Raiders have sputtered to an 0-3 start with the Cleveland Browns coming to town Sunday, their head coach believes he’s …last_img

2010 stadium tour wows media

first_imgLOC CEO Danny Jordaan talking tojournalists about South Africa’s readinessto host the 2010 Fifa World Cup.(Image: Bongani Nkosi) Joao Raposo, a Brazilian journalist, is so impressed with South Africa’s stadiums he’s concerned his home country won’t match up when it hosts the Fifa World Cup in 2014.“In Brazil we’re concerned about the stadiums we will have,” Raposo said during a recent interview at Soccer City stadium in Johannesburg. “I think it will be difficult to compete with the stadiums that Africa has [built].”Raposo, a producer at Bandeirantes TV in Sao Paulo, is one of 120 international and local journalists currently touring South Africa’s 10 host stadiums on a trip initiated by Fifa and the Local Organising Committee (LOC). It has been scheduled to coincide with celebrations marking 100 days remaining to the kick-off the 2010 Fifa World Cup in June.What’s your view on the calabash-shaped Soccer City? I asked Raposo, who, together with a fellow journalist, will stay on after the tour to cover the full tournament in a few month’s time. “I think it’s amazing … but Moses Mabhida [in Durban] is very beautiful, it’s my favourite,” the Brazilian said.The World Cup in South Africa will be spectacular and will certainly cement Africa’s place in world football, he added.The tour is being led by Fifa general secretary Jerome Valcke and LOC CEO Danny Jordaan, who are on hand to answer all journalists’ questions about the readiness of stadiums. It started in Johannesburg on 26 February with visits to Soccer City and Ellis Park.The reporters will wrap up their tour on 2 March at the Moses Mabhida Stadium, where they will be addressed by South Africa’s deputy president Kgalema Motlanthe, Fifa president Sepp Blatter and LOC chairperson Irvin Khoza.Another journalist, Ghanaian Henry Asante Twum, is also taken aback by South Africa’s “impressive” stadiums. Twum, the head of sport at Ghana Television, had seen most of the host stadiums and is convinced the country will stage a memorable event in June.“The World Cup in South Africa will be magnificent. I’m happy that Valcke has commended what South Africa has done to prepare,” Twum said. “I’m impressed with the stadiums I’ve seen.”The hospitality industry also looks ready to welcome the world to Africa, Twum added. “I’ve seen some hotels here. I think the country is in good shape.”Defining momentsSoccer City will accommodate a whopping 90 000 football fanatics, making it the biggest stadium in the country. Come kick-off on June 11, the venue will come alive with vuvuzela trumpeting and cheers from local and international fans as they watch the opening match between Mexico and Bafana Bafana, South Africa’s national squad.Former Bafana midfielder Doctor Khumalo believes the vocal 90 000-strong crowd will be a motivating factor for Bafana. “A 90 000 capacity is a motivator. Some of the boys in Bafana will be nervous, but I don’t think they’re scared of Mexico,” he said.Khumalo has fond memories of playing at the FNB Stadium, which was converted into Soccer City. He played many matches for Bafana and Kaizer Chiefs there, but scoring against Brazil in the 1996 Mandela Cup remains his favourite moment. “The stadium is beautiful, and it’s even better than the older one.”Former striker Philemon Masinga also fondly remembers the impressive goal he scored for South Africa against the Democratic Republic of Congo in 1997. The long-range shot Masinga unleashed after collecting the ball from a defence-splitting through pass from Khumalo remains South Africa’s most important goal, as it secured Bafana a place in the 1998 Fifa World Cup in France.“I’ve got many memories of playing here,” Masinga said.Ellis Park, the other World Cup host stadium in Johannesburg, also “brings back some wonderful memories”, said Joel Stransky – the former rugby player well remembered for scoring the drop goal that won South Africa the Rugby World Cup in 1995 at the stadium.The sight of former president Nelson Mandela wearing a Springbok jersey while he congratulated the team remains etched in Stransky’s mind. Many have said Mandela’s choice of shirt that day inspired reconciliation between black and white South Africans – only a year after the end of apartheid.Experts have given their firm promise that all 10 stadiums will be 100% ready for the June kick-off. At the moment the only area needing attention is the turf at Mbombela Stadium in Mpumalanga, but a pitch consultant from the UK has been called in remedy this. Fifa has assured the media that the 43 500-seater stadium will be completed in time, Radio 702 reported.Vuvuzelas will be loud and clearFifa recently announced that the number of category four match tickets has been increased, meaning that local fans will have greater access to seats at stadiums. Previously only 11% of tickets were allocated for category four – the least expensive category available only to South African residents – but this has been upped to 29%.“We made a commitment that the tournament must be affordable to South Africans … We said let’s give people who’ve been supporting club football in South Africa the chance to carry a World Cup ticket,” said Jordaan.The more local fans there are, the more vuvuzelas, flamboyant fan gear and makarapas there will be at World Cup matches.The plastic vuvuzela trumpet will not be banned from stadiums, Valcke said, on condition that it is not used as a weapon at match venues. “We agreed that we will not ban the vuvuzela or the kuduzela,” he added.The vuvuzela, a South African original, will add a distinct African flavour to the international football event, said Issa Hayatou, the president of the Confederation of African Football. “The vuvuzela is a true representation of what African culture is about, and what African culture is.”last_img read more