title: The effects of ocean acidification on microbial nutrient cycling and productivity in coastal marine sediments

authors: Brandt, Shelly Mia Marie

subjects: Ocean acidification

abstract: Ocean Acidification (OA), commonly referred to as the “other CO₂ problem,” illustrates the current rise in atmospheric carbon dioxide (CO₂) levels, precipitated in large by human-related activity (e.g., fossil fuel combustion and mass deforestation). The dissolution of atmospheric CO₂ into the surface of the ocean over time has reduced oceanic pH levels by 0.1 units since the start of the pre-industrial era and has resulted in wholesale shifts in seawater carbonate chemistry on a planetary scale. The chemical processes of ocean acidification are increasingly well documented, demonstrating clear rates of increase for global CO₂ emissions predicted by the IPCC (Intergovernmental Panel on Climate Change) under the business-as-usual CO₂ emissions scenario. The ecological impact of ocean acidification alters seawater chemical speciation and disrupts vital biogeochemical cycling processes for various chemicals and compounds. Whereby the unidentified potential fallout of this is the cascading effects on the microbial communities within the benthic sediments. These microorganisms drive the marine ecosystem through a network of vast biogeochemical cycling processes aiding in the moderation of ecosystem-wide primary productivity and fundamentally regulating the global climate. The benthic sediments are determinably one of the largest and most diverse ecosystems on the planet. Marine sediments are also conceivably one of the most productive in terms of microbial activity and nutrient flux between the water-sediment interface (i.e., boundary layer). The absorption and sequestering of CO₂ from the atmosphere have demonstrated significant impacts on various marine taxa and their associated ecological processes. This is commonly observed in the reduction in calcium carbonate saturation states in most shell-forming organisms (i.e., plankton, benthic mollusks, echinoderms, and Scleractinia corals). However, the response of benthic sediment microbial communities to a reduction in global ocean pH remains considerably less well characterized.  As these microorganisms operate as the lifeblood of the marine ecosystem, understanding their response and physiological plasticity to increased levels of CO₂ is of critical importance when it comes to investigating regional and global implications for the effects of ocean acidification.

text: The effects of ocean acidification on microbial nutrient cycling and productivity in coastal marine sediments Ocean Acidification (OA), commonly referred to as the “other CO₂ problem,” illustrates the current rise in atmospheric carbon dioxide (CO₂) levels, precipitated in large by human-related activity (e.g., fossil fuel combustion and mass deforestation). The dissolution of atmospheric CO₂ into the surface of the ocean over time has reduced oceanic pH levels by 0.1 units since the start of the pre-industrial era and has resulted in wholesale shifts in seawater carbonate chemistry on a planetary scale. The chemical processes of ocean acidification are increasingly well documented, demonstrating clear rates of increase for global CO₂ emissions predicted by the IPCC (Intergovernmental Panel on Climate Change) under the business-as-usual CO₂ emissions scenario. The ecological impact of ocean acidification alters seawater chemical speciation and disrupts vital biogeochemical cycling processes for various chemicals and compounds. Whereby the unidentified potential fallout of this is the cascading effects on the microbial communities within the benthic sediments. These microorganisms drive the marine ecosystem through a network of vast biogeochemical cycling processes aiding in the moderation of ecosystem-wide primary productivity and fundamentally regulating the global climate. The benthic sediments are determinably one of the largest and most diverse ecosystems on the planet. Marine sediments are also conceivably one of the most productive in terms of microbial activity and nutrient flux between the water-sediment interface (i.e., boundary layer). The absorption and sequestering of CO₂ from the atmosphere have demonstrated significant impacts on various marine taxa and their associated ecological processes. This is commonly observed in the reduction in calcium carbonate saturation states in most shell-forming organisms (i.e., plankton, benthic mollusks, echinoderms, and Scleractinia corals). However, the response of benthic sediment microbial communities to a reduction in global ocean pH remains considerably less well characterized.  As these microorganisms operate as the lifeblood of the marine ecosystem, understanding their response and physiological plasticity to increased levels of CO₂ is of critical importance when it comes to investigating regional and global implications for the effects of ocean acidification.

year: 2022

title: The Fairy-tale of weight loss: Fact or Fantasy

authors: Loomans, Cushla Rose

abstract: Being overweight or obese is if often associated with prejudice, stereotyping, stigmatisation, and discrimination, and can lead to both physical and mental health difficulties. It is commonly thought that weight loss will lead to improvements in various areas within the individual’s life including; body image, social, family, and work. The present study aimed to enhance the understanding of the weight loss journey and the associated outcomes, with a specific focus on the expectation that individuals held, and how these compared to actual outcomes and perceptions. Semi-structured interviews were conducted with eleven participants. Data was then analysed using a grounded theory approach.
Findings showed that although weight loss had benefits such as fitting ‘normal’ sized clothes, increased attention, and a growth in confidence, there were also difficulties that were experienced. These included: a lack of support and unintentional sabotage, perceived body imperfections, and time taken for body perception to match up with actual physical appearance. It was found that positive outcomes of weight loss (such as compliments) could actually be viewed from a negative perspective and may have the opposite effect than what was intended.
While some outcomes were congruent with participants’ expectations, there were also instances where these were incongruent; for example being left with loose skin as a result of weight loss. It appeared as though having an expectation of life being ‘perfect’ after weight loss was more likely to lead to dissatisfaction, while having some form of education or insight about what life and their physical appearance would be like was more likely to result in higher levels of satisfaction.

text: The Fairy-tale of weight loss: Fact or Fantasy Being overweight or obese is if often associated with prejudice, stereotyping, stigmatisation, and discrimination, and can lead to both physical and mental health difficulties. It is commonly thought that weight loss will lead to improvements in various areas within the individual’s life including; body image, social, family, and work. The present study aimed to enhance the understanding of the weight loss journey and the associated outcomes, with a specific focus on the expectation that individuals held, and how these compared to actual outcomes and perceptions. Semi-structured interviews were conducted with eleven participants. Data was then analysed using a grounded theory approach.
Findings showed that although weight loss had benefits such as fitting ‘normal’ sized clothes, increased attention, and a growth in confidence, there were also difficulties that were experienced. These included: a lack of support and unintentional sabotage, perceived body imperfections, and time taken for body perception to match up with actual physical appearance. It was found that positive outcomes of weight loss (such as compliments) could actually be viewed from a negative perspective and may have the opposite effect than what was intended.
While some outcomes were congruent with participants’ expectations, there were also instances where these were incongruent; for example being left with loose skin as a result of weight loss. It appeared as though having an expectation of life being ‘perfect’ after weight loss was more likely to lead to dissatisfaction, while having some form of education or insight about what life and their physical appearance would be like was more likely to result in higher levels of satisfaction.

year: 2016

title: George Lipsey: a Pakeha Maori who married Ema Mokena, daughter of mokena hou, and some of their children

authors: Hart, Philip

abstract: George Lipsey, an Irishman, went to the early Thames goldfield and became a publican. He soon acquired close links with Maori, notably with Ema Mokena, the younger daughter of Mokena Hou. After having two children, they married under Pakeha law just before the opening of the Te Aroha field, thereby ensuring that he was entitled to share in the goldfield’s revenue. From 1873 onwards he had been living at Te Aroha as a Pakeha Maori, erecting the first wooden house and the first Hot Springs Hotel. When gold was found, he encouraged Mokena Hou to open the field, and subsequently invested in the mines (as did Ema, to a much smaller extent). 
Ema and her two eldest children were granted land in a rapidly developing settlement, and the income received from leasing it enabled Lipsey to erect a substantial residence and to be a benefactor of the new settlement by donating land for churches and a school. A sympathetic landlord, he adjusted the rents to assist residents but opposed giving them the freehold because the land was held in trust for his two eldest children. Despite his steady income, his expenditure regularly exceeded it, and he ended up selling land, though not at first at Te Aroha. Initially opposed to his children selling their land, he came to accept this as being necessary, and spent years trying to obtain the highest prices possible from the government.
A leading figure in the local community, he held several local government positions. Sociable, with a fondness for drink that was usually under control, he was especially enthusiastic about horse-racing. As the spokesman for Ngati Rahiri, he advised the latter and was an interpreter.
All their children were educated, but some died tragically early deaths. After he died, the children sold their land because they needed money to develop their farms.

text: George Lipsey: a Pakeha Maori who married Ema Mokena, daughter of mokena hou, and some of their children George Lipsey, an Irishman, went to the early Thames goldfield and became a publican. He soon acquired close links with Maori, notably with Ema Mokena, the younger daughter of Mokena Hou. After having two children, they married under Pakeha law just before the opening of the Te Aroha field, thereby ensuring that he was entitled to share in the goldfield’s revenue. From 1873 onwards he had been living at Te Aroha as a Pakeha Maori, erecting the first wooden house and the first Hot Springs Hotel. When gold was found, he encouraged Mokena Hou to open the field, and subsequently invested in the mines (as did Ema, to a much smaller extent). 
Ema and her two eldest children were granted land in a rapidly developing settlement, and the income received from leasing it enabled Lipsey to erect a substantial residence and to be a benefactor of the new settlement by donating land for churches and a school. A sympathetic landlord, he adjusted the rents to assist residents but opposed giving them the freehold because the land was held in trust for his two eldest children. Despite his steady income, his expenditure regularly exceeded it, and he ended up selling land, though not at first at Te Aroha. Initially opposed to his children selling their land, he came to accept this as being necessary, and spent years trying to obtain the highest prices possible from the government.
A leading figure in the local community, he held several local government positions. Sociable, with a fondness for drink that was usually under control, he was especially enthusiastic about horse-racing. As the spokesman for Ngati Rahiri, he advised the latter and was an interpreter.
All their children were educated, but some died tragically early deaths. After he died, the children sold their land because they needed money to develop their farms.

year: 2016