title: The Pyramid Trough Wetland: environmental and biological diversity in a newly created Antarctic protected area

authors: Jungblut, Anne D.

subjects: cyanobacteria

abstract: The Pyramid Trough (Lat 78°S) has recently gained protection under the Antarctic Treaty system, owing to its wetland values. Here, we describe the microbial diversity of this system, with emphasis on cyanobacteria, and evaluate environment–biota relationships. Geochemistry separates ponds along hydrological gradients receiving recent inflows of dilute meltwater, from a second group that is rarely inundated and where chemistry is dominated by evaporation. Cyanobacteria-based microbial mats dominated the biota throughout. Mats were characterized by light-microscopy, pigment analysis, automated ribosomal intergenic spacer analysis and 16S rRNA gene clone libraries. A total of 17 morphotypes and 21 ribotypes were identified, mostly Oscillatoriales and several taxa that are usually rare in continental Antarctica, including Chroococcales and scytomin-rich Calothrix/Dichothrix, were abundant. There was a general decline in cyanobacterial diversity with increasing conductivity, but weak support for either differences in community composition between the two groups of ponds or sorting of taxa along the hydrological gradients with the pond groups. This implies a broad environmental tolerance and a prevalence of neutral assembly mechanisms in cyanobacterial communities of Antarctic wetland ecosystems.

text: The Pyramid Trough Wetland: environmental and biological diversity in a newly created Antarctic protected area The Pyramid Trough (Lat 78°S) has recently gained protection under the Antarctic Treaty system, owing to its wetland values. Here, we describe the microbial diversity of this system, with emphasis on cyanobacteria, and evaluate environment–biota relationships. Geochemistry separates ponds along hydrological gradients receiving recent inflows of dilute meltwater, from a second group that is rarely inundated and where chemistry is dominated by evaporation. Cyanobacteria-based microbial mats dominated the biota throughout. Mats were characterized by light-microscopy, pigment analysis, automated ribosomal intergenic spacer analysis and 16S rRNA gene clone libraries. A total of 17 morphotypes and 21 ribotypes were identified, mostly Oscillatoriales and several taxa that are usually rare in continental Antarctica, including Chroococcales and scytomin-rich Calothrix/Dichothrix, were abundant. There was a general decline in cyanobacterial diversity with increasing conductivity, but weak support for either differences in community composition between the two groups of ponds or sorting of taxa along the hydrological gradients with the pond groups. This implies a broad environmental tolerance and a prevalence of neutral assembly mechanisms in cyanobacterial communities of Antarctic wetland ecosystems.

year: 2012

title: Discretion in Decision Making: The Fonterra Case

authors: De Witt, Marlize

subjects: Discretion

abstract: Management literature adopt the definition of discretion as “latitude of action” and it is typically researched as freedom of decision making associated with positions in the upper echelons of organisations. This is a narrow view of discretion which underestimates the exercise of discretion irrespective of organisational prescription. The aim of this study was to examine the exercise of discretion across organisational levels, guided by the overarching question: “How do employees use discretion in the workplace?” Valuable insight about the use of discretion by all employees was gained. In addition, the study contributed to a better understanding of the role of personal belief systems in discretionary decision making – an existing gap in the current research on discretion in the management field.

Discretion is about individuals’ freedom of choice, based on their internal beliefs, values and principles. The best way to understand this individual social process was to examine it from the point of view of the decision maker, and therefore a subjectivist research position was adopted. A phenomenological approach allowed the examination of participants’ concepts and pursuits of discretion in their work environment, accessed through face-to-face interaction. Fonterra was chosen as an ideal case for this study since it was representative of other large businesses, but also unique due to the company’s different struggles within the dairy industry. The data was coded and analysed in Atlas.ti. to identify major themes as it emerged from the experiences shared by participants. 

Results supported the notion of discretion as a bilateral phenomenon in the form of intrinsic and extrinsic discretion, exercised across organisational levels. It was found that interpersonal factors such as management style and collaboration with colleagues in the judgement phase of decision making encouraged employees to engage in discretionary decision making. Certain organisational factors were found to discourage the use of discretion. Factors associated with internal and external organisational good (as theorised by MacIntyre) were however experienced differently: employees felt positive about restrictions on their discretion if it was associated with the internal good of the organisation; but negative about restrictions associated with the external good of the organisation. It was determined that employees strongly identified with organisational values, which seemed to act as surrogate values in the absence of clearly defined personal values. 

Conclusions drawn from this study were that discretion was not only an allocated level of leeway associated with organisational positions, but was associated with individuals who occupy those positions. This was clear from the examples of important discretionary decisions made by employees on lower organisational levels. Organisations need to be aware of the significant role that management style and employee collaboration play in the willingness of employees to use their discretion. Organisations will also benefit from the knowledge that employee dissatisfaction ensues from restrictions on their use of discretion due to external but less so from internal organisational practices; and to take note of the importance of articulating the values on which employees could later base their discretionary decisions.

text: Discretion in Decision Making: The Fonterra Case Management literature adopt the definition of discretion as “latitude of action” and it is typically researched as freedom of decision making associated with positions in the upper echelons of organisations. This is a narrow view of discretion which underestimates the exercise of discretion irrespective of organisational prescription. The aim of this study was to examine the exercise of discretion across organisational levels, guided by the overarching question: “How do employees use discretion in the workplace?” Valuable insight about the use of discretion by all employees was gained. In addition, the study contributed to a better understanding of the role of personal belief systems in discretionary decision making – an existing gap in the current research on discretion in the management field.

Discretion is about individuals’ freedom of choice, based on their internal beliefs, values and principles. The best way to understand this individual social process was to examine it from the point of view of the decision maker, and therefore a subjectivist research position was adopted. A phenomenological approach allowed the examination of participants’ concepts and pursuits of discretion in their work environment, accessed through face-to-face interaction. Fonterra was chosen as an ideal case for this study since it was representative of other large businesses, but also unique due to the company’s different struggles within the dairy industry. The data was coded and analysed in Atlas.ti. to identify major themes as it emerged from the experiences shared by participants. 

Results supported the notion of discretion as a bilateral phenomenon in the form of intrinsic and extrinsic discretion, exercised across organisational levels. It was found that interpersonal factors such as management style and collaboration with colleagues in the judgement phase of decision making encouraged employees to engage in discretionary decision making. Certain organisational factors were found to discourage the use of discretion. Factors associated with internal and external organisational good (as theorised by MacIntyre) were however experienced differently: employees felt positive about restrictions on their discretion if it was associated with the internal good of the organisation; but negative about restrictions associated with the external good of the organisation. It was determined that employees strongly identified with organisational values, which seemed to act as surrogate values in the absence of clearly defined personal values. 

Conclusions drawn from this study were that discretion was not only an allocated level of leeway associated with organisational positions, but was associated with individuals who occupy those positions. This was clear from the examples of important discretionary decisions made by employees on lower organisational levels. Organisations need to be aware of the significant role that management style and employee collaboration play in the willingness of employees to use their discretion. Organisations will also benefit from the knowledge that employee dissatisfaction ensues from restrictions on their use of discretion due to external but less so from internal organisational practices; and to take note of the importance of articulating the values on which employees could later base their discretionary decisions.

year: 2017

title: La gouvernance des rivières en Nouvelle-Zélande : une solution élégante ?

authors: Te Aho, Linda

subjects: Water governance,

abstract: Governance of Water in New Zealand: An Elegant Solution? This chapter is grounded in the context of Aotearoa New Zealand while drawing on larger references, such as the United Nations Declaration on the Rights of Indigenous peoples, the Rio+20 Declaration and constitutional provisions for Rights of Nature. The chapter analyses a proposed new model for the contentious issue of freshwater governance in New Zealand based on responsible use which also addresses the complex world of state-Māori relations.

text: La gouvernance des rivières en Nouvelle-Zélande : une solution élégante ? Governance of Water in New Zealand: An Elegant Solution? This chapter is grounded in the context of Aotearoa New Zealand while drawing on larger references, such as the United Nations Declaration on the Rights of Indigenous peoples, the Rio+20 Declaration and constitutional provisions for Rights of Nature. The chapter analyses a proposed new model for the contentious issue of freshwater governance in New Zealand based on responsible use which also addresses the complex world of state-Māori relations.

year: 2018