Seasonal variation in respiratory and photosynthetic parameters in three mosses from the maritime Antarctic

first_imgCarbon fixation under controlled conditions was measured in three mosses from the maritime Antarctic using an infra-red gas analysis system. Gas exchange parameters were determined during each season in 1993 and 1994 using the Arrhenius equation and a hyperbolic tangent function applied to respiration and photosynthesis, respectively. Environmental data was collected in 1994 for comparison. All seasonal variations were greater inBrachythecium than in the species from less hydric habitats. Respiration rates were highest in summer and lowest in winter at all temperatures inBrachythecium, but there was little change inChorisodontium orAndreaea . There was some seasonal variation in the initial slope (Kp) of the photosynthesis-irradiance curve in all species, although the environmental data suggested that this was of little ecological importance. In all species seasonal changes in the maximum rates of photosynthesis (GPmax, NPmax) were observed, generally with a pattern of summer maxima, although there were some interannual differences. These changes are considered to be the most important in affecting the overall annual productivity of the mosses. There were no seasonal variations in the optimum temperatures for either gross or net photosynthesis, or for the irradiance at the onset of light saturation (Ik). The results have important implications for the use of models to estimate the productivity of the Antarctic flora based upon present or predicted climate data.last_img read more

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Potential Brexit impacts see 888 assess Gibraltar operations

first_img EU research agency demands urgent action on loot box consumer safeguards July 29, 2020 Share FTSE250 operator 888 Holdings (888) is considering alternatives to Gibraltar as its operational centre, should the British Overseas Territory be negatively impacted or restricted by Brexit.The governance of 888, are the first industry stakeholders to publicly view Brexit as a potential ‘future risk’ for its operations. Publishing its 2016 annual report, 888 detailed that Gibraltar’s current licensing remit remains ‘unclear’ with regards to servicing European gaming jurisdictions.Last month, 888 CEO Itai Frieberger outlined the importance of growth within European regulated markets as a key dynamic of 888’s ongoing strategy and corporate value.Looking forward, a Gibraltar Remote Gambling License may not be sufficient to fulfil 888’s regulatory strategy as certain EU member states could potentially deem Gibraltar regulatory provisions as ineligible once the UK officially leaves the European Union.“The proposed status of Gibraltar in relation to the United Kingdom as a result of ‘Brexit’ is at present unclear,” 888’s 2016 annual report details“If 888 were to remain registered, licenced and operating in Gibraltar in these circumstances, its ability to rely on EU freedom of services/establishment principles in supplying its services within the EU will be limited.”The combination of low corporate taxes (1% cap) and Gibraltar’s full membership to the EU have seen the UK independent territory become the operational home to more than 30 online betting operators including; GVC, BetVictor, 888 Holdings and 32Red. With over 5000 sector employees the online gambling industry remains Gibraltar’s largest employer (population 32,000).Last January, the European Court of Justice (ECJ) ruled that the UK and Gibraltar should be deemed as ‘single entity’ in their freedom to provide business services, making it unlikely that the EU will provide any dispensation for the overseas territory to access the EU common market. Share Submit 888 appoints VC expert Limor Ganot as a corporate advisor July 20, 2020 Related Articles StumbleUpon GVC hires ‘comms pro’ Tessa Curtis to re-energise media profile  August 25, 2020last_img read more

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Crusaders of the Stage to play ‘Leaving Iowa’

first_img Close Forgot password? Please put in your email: Send me my password! Close message Login This blog post All blog posts Subscribe to this blog post’s comments through… RSS Feed Subscribe via email Subscribe Subscribe to this blog’s comments through… RSS Feed Subscribe via email Subscribe Follow the discussion Comments Logging you in… Close Login to IntenseDebate Or create an account Username or Email: Password: Forgot login? Cancel Login Close WordPress.com Username or Email: Password: Lost your password? Cancel Login Dashboard | Edit profile | Logout Logged in as Admin Options Disable comments for this page Save Settings You are about to flag this comment as being inappropriate. Please explain why you are flagging this comment in the text box below and submit your report. The blog admin will be notified. Thank you for your input. There are no comments posted yet. Be the first one! Post a new comment Enter text right here! Comment as a Guest, or login: Login to IntenseDebate Login to WordPress.com Login to Twitter Go back Tweet this comment Connected as (Logout) Email (optional) Not displayed publicly. Name Email Website (optional) Displayed next to your comments. Not displayed publicly. If you have a website, link to it here. Posting anonymously. Tweet this comment Submit Comment Subscribe to None Replies All new comments Comments by IntenseDebate Enter text right here! Reply as a Guest, or login: Login to IntenseDebate Login to WordPress.com Login to Twitter Go back Tweet this comment Connected as (Logout) Email (optional) Not displayed publicly. Name Email Website (optional) Displayed next to your comments. Not displayed publicly. If you have a website, link to it here. Posting anonymously. Tweet this comment Cancel Submit Comment Subscribe to None Replies All new comments by Amber Schmitz, Sumner Newscow — The Wellington Crusaders of the Stage will hit the stage Friday and Saturday presenting “Leaving Iowa,” a comedy play about family vacations by Tim Clue and Spike Marton. It is presented by permission of Dramatic Publishing.“Leaving Iowa,” a critically-acclaimed play, is a hilarious, family-friendly comedy that toasts the idealism and character of parents from the “greatest generation,” while roasting their dedication to the family road trip. The comedy is about family and family vacations, and is suitable for ages 10 to 110.The play is a postcard to anyone who has ever driven alone on a road, revisiting fond memories of their youth.The cast includes Nate Ybarra, Matthew Sinnett, Julian Cornejo, Kellie Kemper, Baylee Pacchelli, Stephanie Bristow, Cassidy Harriger, J.J. Mayo, Evan Crispen, Gabe Hyer, Chandra Pourner, Shy Edy, Kirstian Bruns, Chloe Easterly and Jefferson Saunders.The show will be held Saturday and Sunday, Jan. 22 and 23 at 7 p.m. in the Wellington High School auditorium. Advance tickets for seniors and students are $4 or $5 at the door, and advance adult tickets are $6 or $7 at the door.Follow us on Twitter.last_img read more

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