Item Open AccessVivipary in the Marlborough rock daisy, Pachystegia insignis (Asteraceae)(New Zealand Natural Sciences, 2023) Conner, A.J.; Jacobs, J.M.E.Vivipary involves the germination of seeds prior to their dispersal from the parent plant. It requires seed dormancy to be absent and has only been recorded in a very small number of phylogenetically diverse higher plants of varying life forms from a wide range of habitats. This study confirms a lack of seed dormancy in the New Zealand native Marlborough rock daisy, Pachystegia insignis (Hook. f.) Cheeseman (Asteraceae). High frequencies of germination in P. insignis immediately following seed maturation are documented, as well as an instance of prolific vivipary. We provide experimental validation that, when achenes are retained in capitula, vivipary is induced in planta by wet conditions. Item Open AccessAcid water tolerance in a New Zealand native fish, the banded kokopu, Galaxias fasciatus (Family Galaxiidae)(New Zealand Natural Sciences, 2008) Monopoli, M.S.; Forster, M.E. Item Open AccessOntogenetic shift in spectral sensitivity of Pacific snapper Chrysophrys auratus(New Zealand Natural Sciences, 2017) Robinson, E.; Jerrett, A.; Black, S.; Davison, W. Item Open AccessDivaricate plants resist ungulate browsing in a forest remnant on the North Island of New Zealand(New Zealand Natural Sciences, 2014) Lusk, C.H. Item Open AccessSexing Helice crassa by the morphology of their chelae(New Zealand Natural Sciences, 1989) Hayes, L.M. Item Open AccessEffects of treated sewage effluent on the macroinvertebrates of a fine sediment substrate stream(New Zealand Natural Sciences, 1986) Tomkins, A.R.; Scott, R.R. Item Open AccessActivity and movements of two species of New Zealand hermit crab and the effect of shell adequacy(New Zealand Natural Sciences, 1986) Osborne, T.A.; McLay, C.L. Item Open AccessWithin-tree growth ring variability in three indigenous tree species(New Zealand Natural Sciences, 1986) Norton, D.A. Item Open AccessA note on the swimming performance of two species of teleost fish, the trout, Salmo trutta, and the koaro, Galaxias brevipinnis(New Zealand Natural Sciences, 1986) Moffat, Robert; Davison, William Item Open AccessDeposit feeding strategy of Amphibola Crenata - Feeding behaviour, selective feeding and digestion(New Zealand Natural Sciences, 1986) Juniper, S.K. Item Open AccessThe subalpine forest and scrub flora of Pegleg Flat, Arthur's Pass(New Zealand Natural Sciences, 1986) Haase, Peter Item Open AccessSome Ectoparasites on rodents in New Zealand II: Sucking lice (Insecta: Anoplura)(New Zealand Natural Sciences, 1986) Gibson, R.N. Item Open AccessSome Ectoparasites on rodents in New Zealand I: Fleas (Insecta: Siphonaptera)(New Zealand Natural Sciences, 1986) Gibson, R.N. Item Open Access120 years of untangling the divaricate habit: a review(New Zealand Natural Sciences, 2021) Maurin, Kévin J. L.; Lusk, Christopher H.; Meijer, Christopher G.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 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 53 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 (< 10 My) in most cases. Item Open AccessDo the New Zealand divaricates defy Corner’s rules?(New Zealand Natural Sciences, 2020) Maurin, Kévin J. L.; Lusk, Christopher H.Divaricate plants are a collection of New Zealand shrubs and tree juvenile forms with interlaced branches bearing leptophylls to nanophylls. Although the divaricate form has attracted much attention from ecologist and botanists, it is not clear to what extent divaricate plants depart from usual patterns of plant allometry. Here, we explore the relationship between twig and leaf size in a set of 11 divaricate species and 13 non-divaricate congeners, as a test of one of Corner’s rules: the axial conformity rule. This rule states that stouter branches should bear larger and more complex leaves, a pattern that has been widely observed throughout the world. The non-divaricate species we examined conformed to the expected positive relationship between twig diameter and leaf area. In contrast, there was no correlation between these two variables among divaricate species: there was no significant trend in leaf size across a three-fold range of twig diameter. These results support qualitative field observations, and conducting this work suggested that testing Corner’s second rule (the greater the ramification, the smaller the branches and appendages) might be compromised by the difficulty of finding a suitable protocol for accurately measuring the degree of ramification in divaricate and non-divaricate species.