scholarly journals Variation in the depth and morphology of burrows of the mud crab Helice crassa among different types of intertidal sediment in New Zealand

1999 ◽  
Vol 182 ◽  
pp. 231-242 ◽  
Author(s):  
DJ Morrisey ◽  
TH DeWitt ◽  
DS Roper ◽  
RB Williamson
2015 ◽  
Vol 68 ◽  
pp. 250-256 ◽  
Author(s):  
N.T. Amponsah ◽  
M. Walter R.M. Beresford ◽  
R.W.A. Scheper

Leaf scar wounds are important sites for Neonectria ditissima infection of apple trees Monitoring leaf fall in Scilate/Envy and Braeburn trees to estimate leaf scar wound presence showed maximum leaf scar incidence occurred in June (early winter) Wounds detected in New Zealand apple orchards were bud scale scars fruit thinning and picking wounds leaf scars and pruning cuts Picking wounds are caused during harvest where the pedicel is detached from the shoot Susceptibility of these different types of wounds was determined using artificial inoculation of N ditissima conidia during the season Pruning cut wounds were the most susceptible followed by fruit picking and thinning wounds and the least susceptible were leaf scar wounds No infections were observed when bud scale wounds were inoculated There was no difference in wound susceptibility between cultivars but overall Scilate/Envy wounds developed more lesions than Braeburn wounds


2020 ◽  
Author(s):  
Edgar Pacheco ◽  
Neil Melhuish

While children’s experiences of online risks and harm is a growing area of research in New Zealand, public discussion on the matter has largely been informed by mainstream media’s fixation on the dangers of technology. At best, debate on risks online has relied on overseas evidence. However, insights reflecting the New Zealand context and based on representative data are still needed to guide policy discussion, create awareness, and inform the implementation of prevention and support programmes for children. This research report presents findings from a quantitative study regarding different aspects related to risks and online safety. It looks at the online experiences that children find bothersome and upsetting and explores the hurtful behaviours they encounter or engage in, both online and in person. Evidence regarding exposure to different types of potentially harmful online content is also presented. Another relevant contribution is the insights related to excessive internet use.The findings presented in this report are based on data from 2,061 New Zealand children aged 9-17. We hope the findings will contribute to the development of policies, practices and services designed to support New Zealand children to safely take advantage of the opportunities available to them online.


2017 ◽  
Vol 4 (1) ◽  
pp. 38
Author(s):  
Ni Desak Putu Ida Suryani ◽  
Pande Gde Sasmita Julyantoro ◽  
Ayu Putu Wiweka Krisna Dewi

Mangrove forest is tropical coastal vegetation that grow on muddy and sandy soils which affected by sea tides. One of important commercial species that live in mangrove ecosystem is the mud crab (Scylla serrata). Feed and water quality have been considered as critical components for supporting the growth both of weight and carapace length of this species. This study was conducted from January to February 2017 in the area of ??Ecotourism Kampung Kepiting, Bali. The influence of different natural feed such as Jerbung shrimp (Penaeus merguiensis), Mollusca, lemuru fish (Sardinella lemuru) and sea worms (Nereis sp.) on the growth performance of the mud crab were investigated. Water quality parameter data such as pH, DO, temperature, salinity and ammonium were also collected. The obtained data were analyzed by using variance analysis of Statistical Product and Service Solutions (SPSS) version 21. The result showed that the use of different types of feed have no effect on  the length of carapace, but it has significantly influence on  the specific growth rate of mud crab. Finally, different types of the given feeding were still resulted in the save range of water quality parameters for mud crab culture.


Author(s):  
Kimberley Tuapawa

This research made a phenomenological interpretation of key stakeholders' experiences with educational online technologies (EOT), to determine their present EOT needs and challenges and provide a basis from which to propose methods for effective EOT support. It analysed the EOT experiences of 10 students and 10 teachers from New Zealand and Australia and interpreted the meanings of the phenomena through an abstraction of local and global themes. This paper is the fifth in a series of six publications that presents the local themes. It documents the interpretations of teachers' experiences with other teachers, in reference to their use of two different types of EOTs: learning management systems (Blackboard), and online networking tools (Twitter and Facebook). These interpretations, which include descriptions of teachers' EOT challenges, helped to inform a set of recommendations for effective EOT use, to assist institutes in their efforts to address EOT challenges and meet stakeholders' needs.


2021 ◽  
Author(s):  
Fleur McLaren

<b>Dating violence is a serious social problem that causes significant harm and negative outcomes for young adults (Shorey, Cornelius, & Bell, 2008). Attempts to explain dating violence have often treated those who experience it as a homogeneous group, with theorists divided over the question of gender symmetry versus male dominance as perpetrators. While family conflict researchers advocate gender symmetry, most feminist researchers stress differential offending rates that reflect current gender inequalities. </b><p>A more sophisticated conceptual framework is required that captures the heterogeneous and complex nature of violence in dating and other interpersonal relationships (Lewis & Fremouw, 2001). This has led a number of researchers to develop empirically-based theories and models that attempt to reconcile different findings across studies. One of these is a typology of violence developed by Michael Johnson (2008) as a way to reconcile the differences between studies. </p> <b>This thesis applies Johnson’s typology to the context of young adult dating relationships in New Zealand with the aim of understanding more about the role of gender within intimate partner relationships. I utilised a mixed methods approach that included an extensive literature review, key informant interviews, an online survey, and in-depth qualitative interviews. </b><p>This research identified two overarching findings. First, there was overwhelming evidence that a large majority of young adults experience some form of violence in a dating relationship, from more minor experiences to dating relationships characterised by severe and terrifying violence. The data demonstrate how dating violence is linked to the social norms of a youth culture characterised by high alcohol use and expectations around ‘hooking-up’, with contemporary technology adding to the complexities facing young adults as they navigate this terrain. </p> <b>The second main finding from this study was that there was positive support for Johnson’s (2008) typology in that there are different types of violence in intimate relationships, in this case in dating relationships. The interview data suggest that the complexity of dating violence is better captured through such a typological framework that does not view all dating violence as a unitary phenomenon. My application of Johnson’s typology provides a narrative that accounts for both dominant traditional gendered violence and also for violent relationships characterised by mutual expressions of conflict and violence. There are, however, some risks associated with the use of such typologies that I also identify and address. </b><p>This study holds particular significance as one of the few New Zealand-based analyses of violence occurring in the context of contemporary New Zealand dating relationships. The findings provide strong support for the need to focus on a range of interventions and programmes delivered to young adults who are experiencing different types of violence. They also underscore the importance of critically analysing media messages, challenging traditional gender norms, and confronting attitudes and beliefs that support and validate the use of violence in dating relationships. </p>


2013 ◽  
Author(s):  
Geoffrey Zahn ◽  
Stephen L. Stevenson ◽  
Frederick W. Spiegel

During the period of March 2004 to December 2007, samples of aerial litter (dead but still attached plant parts) and ground litter were collected from study sites representing a wide range of latitudes (34° S to 50° S) and a variety of different types of habitats throughout New Zealand (including Stewart Island and the Auckland Islands). The objective was to survey the assemblages of protosteloid amoebae present in this region of the world. Twenty-nine described species of protosteloid amoebae were recorded, along with the heterolobesean acrasid, Acrasis rosea. Of the species recovered, Protostelium mycophaga was by far the most abundant and was found in more than half of all samples. Most species were found in fewer than 10% of the samples collected. Seven abundant or common species were found to display significant preferences for aerial litter or ground litter microhabitats. There was some evidence of a general pattern of a decrease in species richness and diversity with increasing latitude and precipitation and elevation.


Author(s):  
Kévin Maurin ◽  
Christopher Lusk

The evolution of divaricate plants in New Zealand has been the subject of long-running debate among botanists and ecologists. Hypotheses about this remarkable case of convergent evolution have focused mainly on two different types of selective pressures: the Plio-Pleistocene advent of cool, dry climates, or browsing by now-extinct moa. Here, we review the scientific literature relating to the New Zealand divaricates, and present a list of 81 taxa whose architectures fall on the divaricate habit spectrum. We recommend a series of standardised terms to facilitate clear communication about these species. We identify potentially informative areas of research yet to be explored, such as the genetics underlying the establishment and control of this habit. We also review work about similar plants overseas, proposing a list of 47 such species as a first step towards more comprehensive inventories; these may motivate further studies of the ecology, morphology and evolutionary history of these overseas plants which could help shed light on the evolution of their New Zealand counterparts. Finally, we compile published divergence dates between divaricate species and their non-divaricate relatives, which suggest that the divaricate habit is fairly recent (&lt; 10 My) in most cases.


Author(s):  
R.L. Burt ◽  
M.B. Forde

Early plant introduction in Australia and NZ involved familiar European species and simple general principles. 'First-generation' pasture cultivars in both countries were based on naturalized or cultivated material originally brought by colonists. Later, imported material was systematically used to improve these established varieties and produce 'second-generation' cultivars more closely adapted to local ecological conditions and agronomic systems. This simple approach proved inadequate for new and difficult environments which required different types of plant, and new species were sometimes tried and discarded prematurely because their potential was not fully displayed in the limited material initially available. Experience with Sfylosanthes in Australia shows that full suites of germplasm are necessary to evaluate a new species properly, and that such material should be deliberately and systematically collected from areas of similar or more extreme climate, particular attention being paid to edaphic characteristics. To obtain suitable legumes for the cold dry high country of the South Island collections from homologous regions in places such as Chile, Argentina, Kashmir, and the USSR may be useful. Keywords: plant introduction, Stylosanthes, Lotus, South America, Australia, New Zealand


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