| 2 | An analysis of Great Salt Lake Winogradsky columns显示文摘Sergei Winogradsky illuminated revolutionary concepts and produced a tool to visualize complex microbial communities and their metabolisms over time:columns displaying aquatic consortia with variety of niches.We worked with museums in Utah to create Winogradsky columns that would highlight aesthetic properties of the Great Salt Lake(GSL)ecosystem,which has a salinity gradient from the freshwater wetlands to salt saturation.One column,constructed using haloarchaea-rich hypersaline brine and oolitic sand of the lake’s north arm,was enriched with nutrients,and resulted in the desired pink hue over time.After a seven-year maturation period,we examined the microbial taxa present in the water through 16 S/18 S rRNA and Internal Transcribed Spacer(ITS)gene sequencing.A pigment analysis revealed an abundance of bacteriochlorophyll a.The presence of this pigment coupled with the DNA sequencing results,suggest that the haloarchaea that dominate the GSL brine,were not responsible for the pink coloration,but instead Gammaproteobacteria,especially Halorhodospira species.Among the eukaryotes,the lack of phytoplankton and the abundance of fungi were noteworthy observations.These data likely relate to the reduction of oxygen in a non-aerated sealed system over time.Our second exhibit had the goal of educating museum goers about the varying salinities of Great Salt Lake.Here we employed three distinct columns of water and sediment from this salinity gradient.Observations of these columns overtime gave us information about invertebrate communities in addition to the microbial consortia.Both installations taught us about comparing an artificial environment in a museum setting to the natural ecosystem.Taken together,we present the data collected and lessons learned from using Winogradsky columns in public spaces for teaching about an important saline lake. | Sierra A.DE LEON Anna E.JACKSON William BLACK William THOMAS Matt KRUBACK June BAXTER Bonnie K.BAXTER | 2023 | Journal of Oceanology and Limnology2023，41，4： | 0 |
| 3 | GREENHOUSE GAS AND AMMONIA EMISSION MITIGATION PRIORITIES FOR UK POLICY TARGETS显示文摘Agriculture is essential for providing food and maintaining food security while concurrently delivering multiple other ecosystem services. However,agricultural systems are generally a net source of greenhouse gases and ammonia. They, therefore, need to substantively contribute to climate change mitigation and net zero ambitions. It is widely acknowledged that there is a need to further reduce and mitigate emissions across sectors, including agriculture to address the climate emergency and emissions gap. This discussion paper outlines a collation of opinions from a range of experts within agricultural research and advisory roles following a greenhouse gas and ammonia emission mitigation workshop held in the UK in March 2022. The meeting identified the top mitigation priorities within the UK's agricultural sector to achieve reductions in greenhouse gases and ammonia that are compatible with policy targets. In addition, experts provided an overview of what they believe are the key knowledge gaps, future opportunities and cobenefits to mitigation practices as well as indicating the potential barriers to uptake for mitigation scenarios discussed. | Sarah BUCKINGHAM Cairistiona F.E.TOPP Pete SMITH Vera EORY David R.CHADWICK Christina K.BAXTER Joanna M.CLOY Shaun CONNOLLY Emily C.COOLEDGE Nicholas J.COWAN Julia DREWER Colm DUFFY Naomi JFOX Asma JEBARI Becky JENKINS Dominika J.KROL Karina A.MARSDEN Graham A.MCAULIFFE Steven J.MORRISON Vincent O'FLAHERTY Rachael RAMSEY Karl G.RICHARDS Rainer ROEHE Jo SMITH Kate SMITH Taro TAKAHASHI Rachel E.THORMAN John WILLIAMS Jeremy WILTSHIRE Robert M.REES | 2023 | Frontiers of Agricultural Science and Engineering2023，10，2： | 0 |
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