title: Assessing the impacts of nonindigenous marine macroalgae: an update of current knowledge

authors: Davidson, Alisha D.

subjects: biosecurity

abstract: Nonindigenous marine species continue to be one of the foremost threats to marine biodiversity. As an update to a 2007 review of the impacts of introduced macroalgae, we assessed 142 additional publications to describe species’ impacts as well as to appraise information on the mechanisms of impact. Only 10% of the currently known nonindigenous macroalgal species were subjects of ecological impact studies, with changed community composition as the most commonly reported effect. Economic impacts were rarely published. Recent research has focused on the impacts of introduced macroalgal assemblages: red algal introductions to the Hawaiian Islands and turf algae in the Mediterranean. Several general issues were apparent. First, many publications included nonsignificant results of statistical analyses but did not report associated power. As many of the studies also had low effect and sample size, the potential for type II errors is considerable. Second, there was no widely accepted framework to categorize and compare impacts between studies. Information in this updated review was still too sparse to identify general patterns and mechanisms of impact. This is a critical knowledge gap as rates of introductions and hence impacts of nonindigenous macroalgae are expected to accelerate with climate change and increasing global trade connectivity.

text: Assessing the impacts of nonindigenous marine macroalgae: an update of current knowledge Nonindigenous marine species continue to be one of the foremost threats to marine biodiversity. As an update to a 2007 review of the impacts of introduced macroalgae, we assessed 142 additional publications to describe species’ impacts as well as to appraise information on the mechanisms of impact. Only 10% of the currently known nonindigenous macroalgal species were subjects of ecological impact studies, with changed community composition as the most commonly reported effect. Economic impacts were rarely published. Recent research has focused on the impacts of introduced macroalgal assemblages: red algal introductions to the Hawaiian Islands and turf algae in the Mediterranean. Several general issues were apparent. First, many publications included nonsignificant results of statistical analyses but did not report associated power. As many of the studies also had low effect and sample size, the potential for type II errors is considerable. Second, there was no widely accepted framework to categorize and compare impacts between studies. Information in this updated review was still too sparse to identify general patterns and mechanisms of impact. This is a critical knowledge gap as rates of introductions and hence impacts of nonindigenous macroalgae are expected to accelerate with climate change and increasing global trade connectivity.

year: 2015

title: Work-based Learning: A New Higher Education? [Book Review]

authors: Piercy, Gemma Louise

subjects: book review

abstract: This article reviews the book: “Work-based Learning: A New Higher Education?”, edited by D. Boud & N. Solomon.

text: Work-based Learning: A New Higher Education? [Book Review] This article reviews the book: “Work-based Learning: A New Higher Education?”, edited by D. Boud & N. Solomon.

year: 2002

title: Cultural tattoos: meanings, descriptors, and attributions

authors: Nikora, Linda Waimarie

subjects: Maori

abstract: Body piercing and tattoo/ta moko were initially seen to be practiced by sailors,
criminals, specific cultural groups (e.g., Māori), or sub-cultural groups (e.g., bikers,
gang members, adolescents). In recent times, these practices have become part of
mainstream popular culture, and are enjoyed by a wide range of people. In this
study, we set out to explore patterns of body modifying behaviour engaged in, or
commented on, by a sample of university students. We invited undergraduate
psychology students from two courses to complete an ‘online’ questionnaire.
Students logged on to a web site, were presented with an information sheet, and
invited to respond. In this paper, we present the reasons why people in this sample
decided to obtain a tattoo and the meanings they ascribe to their modifications. We
will also consider the observations that people make of those who have culturally
inspired tattoos.

text: Cultural tattoos: meanings, descriptors, and attributions Body piercing and tattoo/ta moko were initially seen to be practiced by sailors,
criminals, specific cultural groups (e.g., Māori), or sub-cultural groups (e.g., bikers,
gang members, adolescents). In recent times, these practices have become part of
mainstream popular culture, and are enjoyed by a wide range of people. In this
study, we set out to explore patterns of body modifying behaviour engaged in, or
commented on, by a sample of university students. We invited undergraduate
psychology students from two courses to complete an ‘online’ questionnaire.
Students logged on to a web site, were presented with an information sheet, and
invited to respond. In this paper, we present the reasons why people in this sample
decided to obtain a tattoo and the meanings they ascribe to their modifications. We
will also consider the observations that people make of those who have culturally
inspired tattoos.

year: 2003