title: Editorial:  Plotting new courses in assessment

authors: Whitehead, David

subjects: assessment

abstract: The articles in this issue foreground some of the tensions inherent in the use of “global” summative, norm-referenced measures of literacy on the one hand, and “local”, site and classroom specific literacy assessments on the other. At a theoretical level these tensions may seem without basis given that “global” and “local” assessments seem to serve different masters and achieve different purposes. However, in reality the wash-back effect of high stakes systemic assessment on classroom work is widely accepted. Furthermore, these tensions are palpable in countries in which the results from high-stakes, high status “global” assessments can lead to the closure of schools. Several of the articles in this issue describe how teachers in schools and universities are attempting to steer a course around and between the omnipresent impact of high stakes assessments and their influence on curricula.

text: Editorial:  Plotting new courses in assessment The articles in this issue foreground some of the tensions inherent in the use of “global” summative, norm-referenced measures of literacy on the one hand, and “local”, site and classroom specific literacy assessments on the other. At a theoretical level these tensions may seem without basis given that “global” and “local” assessments seem to serve different masters and achieve different purposes. However, in reality the wash-back effect of high stakes systemic assessment on classroom work is widely accepted. Furthermore, these tensions are palpable in countries in which the results from high-stakes, high status “global” assessments can lead to the closure of schools. Several of the articles in this issue describe how teachers in schools and universities are attempting to steer a course around and between the omnipresent impact of high stakes assessments and their influence on curricula.

year: 2008

title: Diffuse flow environments within basalt- and sediment-based hydrothermal vent ecosystems harbor specialized microbial communities

authors: Campbell, Barbara J.

subjects: 16S rRNA

abstract: Hydrothermal vents differ both in surface input and subsurface geochemistry. The effects of these differences on their microbial communities are not clear. Here, we investigated both alpha and beta diversity of diffuse flow-associated microbial communities emanating from vents at a basalt-based hydrothermal system along the East Pacific Rise (EPR) and a sediment-based hydrothermal system, Guaymas Basin. Both Bacteria and Archaea were targeted using high throughput 16S rRNA gene pyrosequencing analyses. A unique aspect of this study was the use of a universal set of 16S rRNA gene primers to characterize total and diffuse flow-specific microbial communities from varied deep-sea hydrothermal environments. Both surrounding seawater and diffuse flow water samples contained large numbers of Marine Group I (MGI) Thaumarchaea and Gammaproteobacteria taxa previously observed in deep-sea systems. However, these taxa were geographically distinct and segregated according to type of spreading center. Diffuse flow microbial community profiles were highly differentiated. In particular, EPR dominant diffuse flow taxa were most closely associated with chemolithoautotrophs, and off axis water was dominated by heterotrophic-related taxa, whereas the opposite was true for Guaymas Basin. The diversity and richness of diffuse flow-specific microbial communities were strongly correlated to the relative abundance of Epsilonproteobacteria, proximity to macrofauna, and hydrothermal system type. Archaeal diversity was higher than or equivalent to bacterial diversity in about one third of the samples. Most diffuse flow-specific communities were dominated by OTUs associated with Epsilonproteobacteria, but many of the Guaymas Basin diffuse flow samples were dominated by either OTUs within the Planctomycetes or hyperthermophilic Archaea. This study emphasizes the unique microbial communities associated with geochemically and geographically distinct hydrothermal diffuse flow environments.

text: Diffuse flow environments within basalt- and sediment-based hydrothermal vent ecosystems harbor specialized microbial communities Hydrothermal vents differ both in surface input and subsurface geochemistry. The effects of these differences on their microbial communities are not clear. Here, we investigated both alpha and beta diversity of diffuse flow-associated microbial communities emanating from vents at a basalt-based hydrothermal system along the East Pacific Rise (EPR) and a sediment-based hydrothermal system, Guaymas Basin. Both Bacteria and Archaea were targeted using high throughput 16S rRNA gene pyrosequencing analyses. A unique aspect of this study was the use of a universal set of 16S rRNA gene primers to characterize total and diffuse flow-specific microbial communities from varied deep-sea hydrothermal environments. Both surrounding seawater and diffuse flow water samples contained large numbers of Marine Group I (MGI) Thaumarchaea and Gammaproteobacteria taxa previously observed in deep-sea systems. However, these taxa were geographically distinct and segregated according to type of spreading center. Diffuse flow microbial community profiles were highly differentiated. In particular, EPR dominant diffuse flow taxa were most closely associated with chemolithoautotrophs, and off axis water was dominated by heterotrophic-related taxa, whereas the opposite was true for Guaymas Basin. The diversity and richness of diffuse flow-specific microbial communities were strongly correlated to the relative abundance of Epsilonproteobacteria, proximity to macrofauna, and hydrothermal system type. Archaeal diversity was higher than or equivalent to bacterial diversity in about one third of the samples. Most diffuse flow-specific communities were dominated by OTUs associated with Epsilonproteobacteria, but many of the Guaymas Basin diffuse flow samples were dominated by either OTUs within the Planctomycetes or hyperthermophilic Archaea. This study emphasizes the unique microbial communities associated with geochemically and geographically distinct hydrothermal diffuse flow environments.

year: 2013

title: Maori land in Hauraki

authors: Hart, Philip

abstract: Imagining the Hauraki Peninsula to contain payable goldfields and knowing that land to the south of Thames had great agricultural potential, Pakeha were determined to acquire it, and were frustrated by what was considered to be ‘Maori intransigence’. For their part, Maori landowners were justifiably concerned about losing their land, and hindered and delayed opening it to settlement for as long as possible. A major difficulty for officials seeking to acquire land was how to determine boundaries between different blocks and how to identify the true owners when there were rival claims put forward by hapu and individuals. Land purchase agents used a variety of means to get blocks through the land court and then to individualize the title, notably the controversial ‘raihana’ policy, which benefited some landowners at the expense of others. The expensive legal process involved often forced those who had proved their ownership to sell land to pay for their success, a success which resulted in grantees treating the land as their personal property rather than tribal property. Some Pakeha as well as many Maori protested at the unfair process; even James Mackay, the most effective practitioner of raihana, came to lament his success and its consequences for the younger generation of Maori (he blamed the system, not himself). When far too late, it was urged that land should have been leased rather than sold and that proceeds from sales should not have been squandered.
Instead of having commissions of enquiry, as some suggested, the land court system meant that judges determined ownership on the evidence presented to them, even though some owners were not present nor had their interests represented. Sometimes the evidence was false, as was admitted by some witnesses when their perjury was exposed. And in the case of the Ohinemuri district, for which the records survive, when the land was sold to the Crown some Maori received too much money, some too little, and some missed out altogether. The struggles to open Ohinemuri to miners and settlers is examined in detail, revealing that some rangatira expected economic gain and that Te Hira’s party, who opposed the opening, were undermined by some of Te Hira’s followers: being ‘Hauhau’, they refused to take money from the Crown but instead took raihana, meaning goods which were charged against their land in a way they did not understand. Nor did anyone fully understand the system apart from Mackay, whose policy was eventually repudiated by the politicians who had encouraged it previously. Not all land was lost, but because the government did not assist landowners with advice and finance until well into the twentieth century what land that was retained could not be developed adequately.

text: Maori land in Hauraki Imagining the Hauraki Peninsula to contain payable goldfields and knowing that land to the south of Thames had great agricultural potential, Pakeha were determined to acquire it, and were frustrated by what was considered to be ‘Maori intransigence’. For their part, Maori landowners were justifiably concerned about losing their land, and hindered and delayed opening it to settlement for as long as possible. A major difficulty for officials seeking to acquire land was how to determine boundaries between different blocks and how to identify the true owners when there were rival claims put forward by hapu and individuals. Land purchase agents used a variety of means to get blocks through the land court and then to individualize the title, notably the controversial ‘raihana’ policy, which benefited some landowners at the expense of others. The expensive legal process involved often forced those who had proved their ownership to sell land to pay for their success, a success which resulted in grantees treating the land as their personal property rather than tribal property. Some Pakeha as well as many Maori protested at the unfair process; even James Mackay, the most effective practitioner of raihana, came to lament his success and its consequences for the younger generation of Maori (he blamed the system, not himself). When far too late, it was urged that land should have been leased rather than sold and that proceeds from sales should not have been squandered.
Instead of having commissions of enquiry, as some suggested, the land court system meant that judges determined ownership on the evidence presented to them, even though some owners were not present nor had their interests represented. Sometimes the evidence was false, as was admitted by some witnesses when their perjury was exposed. And in the case of the Ohinemuri district, for which the records survive, when the land was sold to the Crown some Maori received too much money, some too little, and some missed out altogether. The struggles to open Ohinemuri to miners and settlers is examined in detail, revealing that some rangatira expected economic gain and that Te Hira’s party, who opposed the opening, were undermined by some of Te Hira’s followers: being ‘Hauhau’, they refused to take money from the Crown but instead took raihana, meaning goods which were charged against their land in a way they did not understand. Nor did anyone fully understand the system apart from Mackay, whose policy was eventually repudiated by the politicians who had encouraged it previously. Not all land was lost, but because the government did not assist landowners with advice and finance until well into the twentieth century what land that was retained could not be developed adequately.

year: 2016