title: The chemistry of Pseudocyphellaria impressa S. Lat. in New Zealand

authors: Wilkins, Alistair L.

abstract: As part of a detailed study of the nomenclature and taxonomy of the New Zealand
species of Pseudocyphellaria it has been noted that the chemistry of the P. impressa
(Hook & Taylor) Vainio aggregate, that is species with a markedly faveolate (honeycomb-
like) upper surface and a green algal phycobiont, is particularly complex.
The 45 lichen substances detected fall into four distinct groupings, here designated
as 'Codings'. The aim of this contribution is to investigate suitable methods for
revealing this chemical assemblage by t.l.c. and, as far as is currently possible, to
identify the range of substances. No conscious attempt is made to assign the four
chemical Codings to particular taxa or species groupings; the taxonomy of the
group will be discussed elsewhere. The four Codings proved to be remarkably
uniform and constant considering the range and number of substances involved;
such variation that occurred was only in the presence and concentration of accessory
substances.
Although this work only concerns New Zealand material, similar patterns occur
in related taxa of the group present in southern South America, south-east Australia
and Tasmania.

text: The chemistry of Pseudocyphellaria impressa S. Lat. in New Zealand As part of a detailed study of the nomenclature and taxonomy of the New Zealand
species of Pseudocyphellaria it has been noted that the chemistry of the P. impressa
(Hook & Taylor) Vainio aggregate, that is species with a markedly faveolate (honeycomb-
like) upper surface and a green algal phycobiont, is particularly complex.
The 45 lichen substances detected fall into four distinct groupings, here designated
as 'Codings'. The aim of this contribution is to investigate suitable methods for
revealing this chemical assemblage by t.l.c. and, as far as is currently possible, to
identify the range of substances. No conscious attempt is made to assign the four
chemical Codings to particular taxa or species groupings; the taxonomy of the
group will be discussed elsewhere. The four Codings proved to be remarkably
uniform and constant considering the range and number of substances involved;
such variation that occurred was only in the presence and concentration of accessory
substances.
Although this work only concerns New Zealand material, similar patterns occur
in related taxa of the group present in southern South America, south-east Australia
and Tasmania.

year: 1979

title: Teacher responses to a planning framework for junior technology classes learning outside the classroom

authors: Milne, Louise

subjects: technology education

abstract: This paper describes teacher responses to a framework designed to support teacher planning for technology. It includes a learning experience outside the classroom [LEOTC] and is designed specifically for five-year-old students. The planning framework draws together characteristics of technology education, junior primary classrooms and LEOTC to describe the role of the teacher, parent helpers and students as they work through three identified phases - preparing for a visit outside the classroom, participating in a learning experience outside the classroom, and post-visit activities in the classroom. This framework was trialled using a case study approach in two new-entrant classrooms in which students made chocolates for Mother's Day as part of a technology unit. 
Students partook in a LEOTC visit to a chocolate factory in order to examine the practice of experts before designing and making their own chocolate gift. Data sources for this paper included interviews with two participating teachers. The analysis of these suggest the use of the planning framework led to the thorough preparation of parent helpers and students, clearly defined roles for both the teachers and the parents, and the use of valuable strategies which enhanced students memories of their visit enabled them to apply aspects of the knowledge gained to their own technological practice.

text: Teacher responses to a planning framework for junior technology classes learning outside the classroom This paper describes teacher responses to a framework designed to support teacher planning for technology. It includes a learning experience outside the classroom [LEOTC] and is designed specifically for five-year-old students. The planning framework draws together characteristics of technology education, junior primary classrooms and LEOTC to describe the role of the teacher, parent helpers and students as they work through three identified phases - preparing for a visit outside the classroom, participating in a learning experience outside the classroom, and post-visit activities in the classroom. This framework was trialled using a case study approach in two new-entrant classrooms in which students made chocolates for Mother's Day as part of a technology unit. 
Students partook in a LEOTC visit to a chocolate factory in order to examine the practice of experts before designing and making their own chocolate gift. Data sources for this paper included interviews with two participating teachers. The analysis of these suggest the use of the planning framework led to the thorough preparation of parent helpers and students, clearly defined roles for both the teachers and the parents, and the use of valuable strategies which enhanced students memories of their visit enabled them to apply aspects of the knowledge gained to their own technological practice.

year: 2011

title: The biology and general ecology of the Koaro (Galaxias brevipinnis) in some tributary streams of Lake Taupo

authors: Kusabs, Ian Andrew

abstract: The ecology and general biology of Galaxias brevipinnis were studied in three tributary streams of Lake Taupo between May 1988 and April 1989. Adult koaro were found in relatively high densities in the Waipehi and Omori streams but in low densities in the larger Waiotaka stream. The results of population estimation studies suggest that the distribution and abundance of koaro is negatively correlated with that of trout. There was a general decline in the population density of stream-resident koaro in the winter months. Juvenile koaro were found to migrate into the tributaries from August to December, with migrations being at a peak in October and November.

Population length-frequency distributions and otoliths used to age koaro indicated that there were up to 5 age classes. Growth was allometric and was adequately described by the von Bertalanffy equation after the first year of life. Koaro were found to be in best condition in the Spring and lowest in Winter.

Spawning appeared to occur from December through to April peaking in late Summer to early in the Waipehi Stream was Autumn. The mean fecundity of koaro approximately 5500. A sex-ratio of approximately 1:1 (males: females) were found in the koaro populations in the Omori and Waipehi streams, but during spawning there were always more ripe males than gravid females.

There was considerable overlap in the diets of both koaro and juvenile rainbow trout in the Waipehi and Omori streams, with invertebrates being consumed according to their relative abundance in the benthos. Ephemeroptera larvae were numerically the most important food item in the diet of both species. However, by weight, fish (juvenile koaro) were the most important food · item in the diet of koaro and rainbow trout in the Waipehi stream. In the Omori stream in Winter, trout eggs were the most important food item in terms of weight. Terrestrial prey was found to be of relatively minor importance in the diets of koaro and rainbow trout in the Waipehi and Omori streams.

text: The biology and general ecology of the Koaro (Galaxias brevipinnis) in some tributary streams of Lake Taupo The ecology and general biology of Galaxias brevipinnis were studied in three tributary streams of Lake Taupo between May 1988 and April 1989. Adult koaro were found in relatively high densities in the Waipehi and Omori streams but in low densities in the larger Waiotaka stream. The results of population estimation studies suggest that the distribution and abundance of koaro is negatively correlated with that of trout. There was a general decline in the population density of stream-resident koaro in the winter months. Juvenile koaro were found to migrate into the tributaries from August to December, with migrations being at a peak in October and November.

Population length-frequency distributions and otoliths used to age koaro indicated that there were up to 5 age classes. Growth was allometric and was adequately described by the von Bertalanffy equation after the first year of life. Koaro were found to be in best condition in the Spring and lowest in Winter.

Spawning appeared to occur from December through to April peaking in late Summer to early in the Waipehi Stream was Autumn. The mean fecundity of koaro approximately 5500. A sex-ratio of approximately 1:1 (males: females) were found in the koaro populations in the Omori and Waipehi streams, but during spawning there were always more ripe males than gravid females.

There was considerable overlap in the diets of both koaro and juvenile rainbow trout in the Waipehi and Omori streams, with invertebrates being consumed according to their relative abundance in the benthos. Ephemeroptera larvae were numerically the most important food item in the diet of both species. However, by weight, fish (juvenile koaro) were the most important food · item in the diet of koaro and rainbow trout in the Waipehi stream. In the Omori stream in Winter, trout eggs were the most important food item in terms of weight. Terrestrial prey was found to be of relatively minor importance in the diets of koaro and rainbow trout in the Waipehi and Omori streams.

year: 1989