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Abstract: A distinctive feature of many of New Zealand's coastal landscapes has been the rudimentarily constructed holiday home known as a 'bach'. In recent years, however, rapidly escalating beachfront property prices, and the associated development of elite residential landscapes, have threatened the status of the bach. This commentary examines the diminishing number of 'classic' kiwi baches, and specifically considers the case of Rangitoto, a volcanic island close to central Auckland. Here, the location of baches on publicly owned land has been controversial and the small number that remains symbolize curiosities from another time and place. 相似文献
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M.M. Walker 《新西兰海洋与淡水研究杂志》2013,47(1):19-25
Test diameter and gonad volume were recorded over 1 year for bimonthly samples of Evechinus chloroticus (Valenciennes) from each of 3 subtidal populations 10 km apart in the Hauraki Gulf. Histological analysis was used to relate cellular events during gametogenesis to the annual cycle of change in gonad size. Mean gonad sizes of the different sea urchin populations were compared by analysis of covariance. Gametogenesis began in the spring, and major spawning occurred in mid to late summer. The proportion of the gonads taken up by nutritive phagocyte cells increased from autumn to spring. During proliferation and growth of gametes the nutritive phagocytes declined in abundance and globulation, suggesting that reserves stored in these cells were transferred to developing gametes. Gonad size doubled during gametogenesis, declined after spawning, and remained low in autumn and winter. Differences in gonad size between populations were significant during most of the year, and were most pronounced in mid summer. Although synchronous gametogenesis occurred in the 3 populations studied, spawning occurred at different times. This suggested that spawning in this species was induced by factors acting either within sea urchin populations or over distances of a few km or less. 相似文献
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