title: Responding to children’s answers: questions embedded in the social context of early childhood education

authors: Bateman, Amanda

subjects: early childhood education

abstract: This article presents analysis of question–answer sequences during problem inquiry between a teacher and two children in an early childhood crèche in New Zealand. Conversation analysis is used to reveal which questions the teacher asks, how children answer the questions, and the teacher’s responses to the child’s answers. Although adults’ ‘effective’ questions were identified and promoted in the REPEY study much less attention has been given to how adults respond to children’s answers. It is imperative to investigate the sequences of talk which follow a question in order to establish how teaching and learning is co-constructed in context, one utterance at a time and as a joint project between teacher and child. The findings suggest that task problems and emotional problems are treated in a similar way during problem inquiry, highlighting the complexity of interactions when teachers are providing both emotional care and educational support for young children.

text: Responding to children’s answers: questions embedded in the social context of early childhood education This article presents analysis of question–answer sequences during problem inquiry between a teacher and two children in an early childhood crèche in New Zealand. Conversation analysis is used to reveal which questions the teacher asks, how children answer the questions, and the teacher’s responses to the child’s answers. Although adults’ ‘effective’ questions were identified and promoted in the REPEY study much less attention has been given to how adults respond to children’s answers. It is imperative to investigate the sequences of talk which follow a question in order to establish how teaching and learning is co-constructed in context, one utterance at a time and as a joint project between teacher and child. The findings suggest that task problems and emotional problems are treated in a similar way during problem inquiry, highlighting the complexity of interactions when teachers are providing both emotional care and educational support for young children.

year: 2013

title: Effect of river flow, temperature, and water chemistry on proliferations of the benthic anatoxin-producing cyanobacterium Phormidium

authors: Wood, Susanna A.

subjects: anatoxins

abstract: Proliferations of the benthic anatoxin-producing cyanobacterium Phormidium are increasing in prevalence in cobble-bed rivers worldwide. This proliferation is of particular concern when rivers are used as sources of drinking water or for recreation. Little is known about the physicochemical variables promoting proliferations, and our existing knowledge is based on data from only a few rivers. We assessed Phormidium cover, physicochemical variables, and anatoxin concentrations at 10 sites in 7 New Zealand rivers every week for 2 y. Generalized additive mixed models (GAMMs) identified dissolved inorganic N (DIN) over the accrual period <0.8 mg/L, dissolved reactive P accrual <0.005 mg/L, water temperatures >15°C, and conductivity as having positive and statistically significant effects on % Phormidium cover. Flow intensity, expressed relative to the long-term median, had a positive effect up to 0.4× the median flow and a negative effect when >0.5× the median flow. Quantile regression models showed marked variability among sites in relation to the flow intensity required to reduce % Phormidium cover (90ᵗʰ percentile ranged 0.65–249× the long-term median flow). Anatoxins were detected in variable concentrations in samples from 7 of the 10 sites. GAMMs identified strong relationships between elevated toxin concentrations and low conductivity and increasing % Phormidium cover, and significantly lower toxin concentrations when DIN was <0.2 mg/L. These data demonstrate that multiple physicochemical variables influence Phormidium proliferations and toxin concentrations and indicate that the relative importance of these variables differs among rivers and sites.

text: Effect of river flow, temperature, and water chemistry on proliferations of the benthic anatoxin-producing cyanobacterium Phormidium Proliferations of the benthic anatoxin-producing cyanobacterium Phormidium are increasing in prevalence in cobble-bed rivers worldwide. This proliferation is of particular concern when rivers are used as sources of drinking water or for recreation. Little is known about the physicochemical variables promoting proliferations, and our existing knowledge is based on data from only a few rivers. We assessed Phormidium cover, physicochemical variables, and anatoxin concentrations at 10 sites in 7 New Zealand rivers every week for 2 y. Generalized additive mixed models (GAMMs) identified dissolved inorganic N (DIN) over the accrual period <0.8 mg/L, dissolved reactive P accrual <0.005 mg/L, water temperatures >15°C, and conductivity as having positive and statistically significant effects on % Phormidium cover. Flow intensity, expressed relative to the long-term median, had a positive effect up to 0.4× the median flow and a negative effect when >0.5× the median flow. Quantile regression models showed marked variability among sites in relation to the flow intensity required to reduce % Phormidium cover (90ᵗʰ percentile ranged 0.65–249× the long-term median flow). Anatoxins were detected in variable concentrations in samples from 7 of the 10 sites. GAMMs identified strong relationships between elevated toxin concentrations and low conductivity and increasing % Phormidium cover, and significantly lower toxin concentrations when DIN was <0.2 mg/L. These data demonstrate that multiple physicochemical variables influence Phormidium proliferations and toxin concentrations and indicate that the relative importance of these variables differs among rivers and sites.

year: 2016-12-15

title: Foreword- Rotorua Lakes Symposium 2013

authors: Green, John

abstract: The Rotorua Te Arawa Lakes programme is now at a critical phase where nutrient budgets are to be established for landowners across the catchment of Lake Rotorua. The challenge is to reduce the existing nutrient load to the lake by over 43% by 2032.

text: Foreword- Rotorua Lakes Symposium 2013 The Rotorua Te Arawa Lakes programme is now at a critical phase where nutrient budgets are to be established for landowners across the catchment of Lake Rotorua. The challenge is to reduce the existing nutrient load to the lake by over 43% by 2032.

year: 2013