title: Soils and hydrology of Seabee Hook, Cape Hallett, Antarctica

authors: Hofstee, Erica H.

abstract: The soils and hydrology of Seabee Hook, Cape Hallett, Antarctica were investigated during the 2003-04 and 2004-05 summer periods. Seabee Hook is a low lying spit that has been built up by the deposition of material, from nearby cliffs, by strong tidal currents. Seabee Hook is also the location of a large Adelie penguin (Pygoscelis adeliae) colony and was the location of a USNNZ research base, occupied from 1957-73.

A soil map is presented of the Seabee Hook area. A soil association was identified between penguin mounds and intermound areas. Penguins build nests of stones on elevated sites, which at Cape Hallett are relict beach ridges. The penguins have exaggerated the topography of the beach ridges, primarily by adding 3-10 cm size stones ("penguin-stones") and guano, to form penguin mounds. Soils on penguin mounds contain guano in the upper 50 cm of the gravelly and sandy profile, and the guano layer overlies sub-rounded beachdeposited gravel and sand. Soils between beach ridges contain a thin veneer ( <3cm) of guano overlying the same basaltic gravelly sand found in the lower parts of the mound soils. The soils formed on the mounds have been classified usingUSDA Soil Taxonomy as Typic Haplorthels, and the soils formed between mounds have been classified as Typic Haplorthels/Typic Aquorthels depending on their soil moisture contents. 
The soil of the penguin mounds was enriched in many elements including nitrogen, organic carbon, phosphorus, cadmium, zinc, copper and it had increased electrical conductivity in soil horizons influenced by penguin guano compared to guano free horizons, soils from intermound areas, and soils away from the penguin colony. 
Radiocarbon dates from five penguin bones buried at the bottom of soil profiles indicate that Seabee Hook has been colonized by penguins for at least1000 years. That the colonization of Seabee Hook may have been rapid is evidenced by the consistent thickness of "penguin stones" and guano on top of the beach ridges throughout the area.
 Groundwater was situated perched above the ice cement as a shallow (<1-30 cm thickness of groundwater) unconfined aquifer. Groundwater within the penguin colony was sourced from melting snow drifts and ground ice. The occurrence of groundwater within the penguin colony at Seabee Hook showed considerable spatial and temporal variations over the 2003-04 and 2004-05summers, with ice cement levels decreasing from November and groundwater beginning to accumulate in early-December. Groundwater velocity through the permeable gravel and sand (porosity 23-33%) was up to 7.8 m day⁻¹, with hydraulic conductivities of 5 x 10⁻⁴ m s⁻¹ to 5 x 10⁻⁹ m s⁻¹.  Groundwater abundance varied on an annual basis depending on the amount of snowmelt occurring during summer. The 2003-04 summer had a higher water table within the penguin colony than the 2004-05 summer. During 2003-04, surface water commonly occurred as ephemeral and intermittent streams and ponds. During2004-05, water was mostly confined to groundwater within the penguin colony, where it occurred in topographic lows. Surface water was present in only a few ponds within the colony during 2004-05, and was more common in the high meltwater zones away from the penguin colony. 
The penguins and close proximity to the ocean have affected the groundwater chemistry, with groundwater in the penguin colony elevated in salt (14 times more sodium, 41 times more potassium), nitrogen (7 times more nitrate,416 times more ammonia), and phosphorus (33 time more total phosphorus)compared to groundwater sourced away from the penguin colony on Seabee Hookand also compared to other terrestrial waters in Antarctica.

text: Soils and hydrology of Seabee Hook, Cape Hallett, Antarctica The soils and hydrology of Seabee Hook, Cape Hallett, Antarctica were investigated during the 2003-04 and 2004-05 summer periods. Seabee Hook is a low lying spit that has been built up by the deposition of material, from nearby cliffs, by strong tidal currents. Seabee Hook is also the location of a large Adelie penguin (Pygoscelis adeliae) colony and was the location of a USNNZ research base, occupied from 1957-73.

A soil map is presented of the Seabee Hook area. A soil association was identified between penguin mounds and intermound areas. Penguins build nests of stones on elevated sites, which at Cape Hallett are relict beach ridges. The penguins have exaggerated the topography of the beach ridges, primarily by adding 3-10 cm size stones ("penguin-stones") and guano, to form penguin mounds. Soils on penguin mounds contain guano in the upper 50 cm of the gravelly and sandy profile, and the guano layer overlies sub-rounded beachdeposited gravel and sand. Soils between beach ridges contain a thin veneer ( <3cm) of guano overlying the same basaltic gravelly sand found in the lower parts of the mound soils. The soils formed on the mounds have been classified usingUSDA Soil Taxonomy as Typic Haplorthels, and the soils formed between mounds have been classified as Typic Haplorthels/Typic Aquorthels depending on their soil moisture contents. 
The soil of the penguin mounds was enriched in many elements including nitrogen, organic carbon, phosphorus, cadmium, zinc, copper and it had increased electrical conductivity in soil horizons influenced by penguin guano compared to guano free horizons, soils from intermound areas, and soils away from the penguin colony. 
Radiocarbon dates from five penguin bones buried at the bottom of soil profiles indicate that Seabee Hook has been colonized by penguins for at least1000 years. That the colonization of Seabee Hook may have been rapid is evidenced by the consistent thickness of "penguin stones" and guano on top of the beach ridges throughout the area.
 Groundwater was situated perched above the ice cement as a shallow (<1-30 cm thickness of groundwater) unconfined aquifer. Groundwater within the penguin colony was sourced from melting snow drifts and ground ice. The occurrence of groundwater within the penguin colony at Seabee Hook showed considerable spatial and temporal variations over the 2003-04 and 2004-05summers, with ice cement levels decreasing from November and groundwater beginning to accumulate in early-December. Groundwater velocity through the permeable gravel and sand (porosity 23-33%) was up to 7.8 m day⁻¹, with hydraulic conductivities of 5 x 10⁻⁴ m s⁻¹ to 5 x 10⁻⁹ m s⁻¹.  Groundwater abundance varied on an annual basis depending on the amount of snowmelt occurring during summer. The 2003-04 summer had a higher water table within the penguin colony than the 2004-05 summer. During 2003-04, surface water commonly occurred as ephemeral and intermittent streams and ponds. During2004-05, water was mostly confined to groundwater within the penguin colony, where it occurred in topographic lows. Surface water was present in only a few ponds within the colony during 2004-05, and was more common in the high meltwater zones away from the penguin colony. 
The penguins and close proximity to the ocean have affected the groundwater chemistry, with groundwater in the penguin colony elevated in salt (14 times more sodium, 41 times more potassium), nitrogen (7 times more nitrate,416 times more ammonia), and phosphorus (33 time more total phosphorus)compared to groundwater sourced away from the penguin colony on Seabee Hookand also compared to other terrestrial waters in Antarctica.

year: 2006

title: Specification and interpretation issues in behavioural models used for environmental assessment

authors: Hess, Stephane

subjects: transport

abstract: While the environmental damage caused by transport is the direct result of engineering design – the use of mechanical vehicles largely propelled by fossil fuels – it is human behaviour that influences the way transport is used and the infrastructure that is provided. There has been a tendency in the past to seek technological solutions to environmental problems, and there is clearly a continuing role for policies that foster this approach. But more recently, over the past 20 years or so, there has been a recognition that changing the ways transport is used, as well as the physical nature of the hardware, is at least as important. In both cases, however, there is a need to understand the responses of society to alternative policies. This entails, at one level, insights into the likely reaction of people to alternative policies – basically good forecasting models. At another level, that of project and policy evaluation, there is a need to understand the values that society puts on environmental improvement.

text: Specification and interpretation issues in behavioural models used for environmental assessment While the environmental damage caused by transport is the direct result of engineering design – the use of mechanical vehicles largely propelled by fossil fuels – it is human behaviour that influences the way transport is used and the infrastructure that is provided. There has been a tendency in the past to seek technological solutions to environmental problems, and there is clearly a continuing role for policies that foster this approach. But more recently, over the past 20 years or so, there has been a recognition that changing the ways transport is used, as well as the physical nature of the hardware, is at least as important. In both cases, however, there is a need to understand the responses of society to alternative policies. This entails, at one level, insights into the likely reaction of people to alternative policies – basically good forecasting models. At another level, that of project and policy evaluation, there is a need to understand the values that society puts on environmental improvement.

year: 2010

title: Kaum tuatanga the changing roles of kaum tua in Ng ti Rehua: Future directions

authors: Davies, Sydney Henare

subjects: Indigenous psychology

abstract: This study looks at the roles of kaum tua and investigates how these roles have changed over time. With the ageing Māori population and the reported importance of kaum tua roles in the wellbeing of Māori communities, the findings of this study provide an insight into the possible future direction of these roles. The study was conducted with the assistance of members of one hapu (N=47) that were 65 years of age and over. The study was by interview, utilising a semi-structured questionnaire with both open ended and closed questions. Narratives from participants was analysed and compared to the roles of kaum tua that were found in the literature, namely; Leadership, cultural knowledge, dispute resolution, protection and nurturing of young, provide spiritual and other guidance, social control, provide rituals, preserve te reo Māori and live active and healthy lives. Findings of this research supported the roles found in the literature. The roles of kaum tua still exist but may have diminished over time. The change in roles is in the adaptation to meet the needs of the time period while maintaining the core values of each role and providing a continuation of practices.

text: Kaum tuatanga the changing roles of kaum tua in Ng ti Rehua: Future directions This study looks at the roles of kaum tua and investigates how these roles have changed over time. With the ageing Māori population and the reported importance of kaum tua roles in the wellbeing of Māori communities, the findings of this study provide an insight into the possible future direction of these roles. The study was conducted with the assistance of members of one hapu (N=47) that were 65 years of age and over. The study was by interview, utilising a semi-structured questionnaire with both open ended and closed questions. Narratives from participants was analysed and compared to the roles of kaum tua that were found in the literature, namely; Leadership, cultural knowledge, dispute resolution, protection and nurturing of young, provide spiritual and other guidance, social control, provide rituals, preserve te reo Māori and live active and healthy lives. Findings of this research supported the roles found in the literature. The roles of kaum tua still exist but may have diminished over time. The change in roles is in the adaptation to meet the needs of the time period while maintaining the core values of each role and providing a continuation of practices.

year: 2008