It has long been recognized that biological activity has a large influence on biogeochemical cycles in the ocean. However, the recognition that the ecosystem composition may also be significant is more recent. The newest generation of biogeochemical models used to study climate-ocean interactions represents the diversity of planktonic ecosystems by grouping similar species into “plankton functional types” (PFTs). These models can thus include specific biogeochemical processes mediated by distinct PFTs, such as the ballasting effect of mineral shells, the aggregation effect of some organic material, and the packaging effect of grazing by large zooplankton.
Former Villa striker Dublin believes Villa boss Paul Lambert should have paired strikers Christian Benteke and the currently injured Darren Bent on a more regular basis. He also feels there is no guarantee the midlands club would make an instant return to the Barclays Premier League next season if they go down for the first time in more than 25 years. Dublin, talking to Absolute Radio’s Russ Williams, said; “I will always say it’s the players who have to take the blame. The manager has a responsibility and the owner has a responsibility to spend the money wisely but I think the players ultimately have the full responsibility.” Dion Dublin insists Aston Villa’s players have to shoulder the full responsibility for an “absolutely woeful” season ahead of Saturday’s relegation clash at Reading. He added: “Even when I was there at Villa with Ginola and Schmeichel and Southgate, we achieved nothing as well and for years and years the Villa fans have had nothing to cheer about. “They’ve got even less to cheer about now because the team have been absolutely woeful this season and it’s sad to see such a big club in such a poor position.” Lambert has often opted to play with a single central striker in the in-form Benteke with Andreas Weimann and Gabriel Agbonlahor operating wide in a 4-2-3-1 formation. The Scot has always insisted his relationship with club record signing Bent has been fine, with no fall-out between the pair and his selection policies based purely on footballing reasons. But Dublin claimed: “I thought Villa might have played Benteke and Bent both up front but there is something gone on. We don’t know what it is. “Darren is probably injured at the moment but there was speculation that his attitude is bad and he’s been injured for so long. “Bent is a goal scorer, you can play him in the fourth division or Champions League and he will still score goals. Having both of them up front would have given Villa more of a chance of having a better position in the league and scoring more goals.” Press Association
Photo © paralympic.org This evening at 7.10 Jason Smyth runs in the heats of the T13 200 metres, and then an hour later Orla Comerford is in the final of the T13 100 metres.Smyth won gold in the 100 metres last night, and speaking after that win he said he was looking forward to doing it all again. There’s been a good start for Team Ireland on Day 4 of the World Para Athletics Championship in London.Paul Keogan has booked his place in the final of the T37 200 metres after a third place finish in this morning’s heat.The Meath man finished in a time of 25.27 seconds.