Conservation of the threatened shrub Hebe cupressoides (Scrophulariaceae), eastern South Island, New Zealand

Widyatmoko, Didik; Norton, David A.

doi:10.1016/s0006-3207(97)00016-5

Cited by 15 publications

(17 citation statements)

References 11 publications

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“…For Hebe cupressoides, both Heads (1994) and Widyatmoko & Norton (1997) map a range extending considerably north-and southwards from that shown in Fig. 1A.…”

Section: Reliability Of Distribution Recordsmentioning

confidence: 77%

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Whipcord Hebes ‐ systematics, distribution, ecology and evolution

Wagstaff

Wardle

1999

New Zealand Journal of Botany

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The genus Hebe (Scrophulariaceae) includes 10 species known as whipcords or Flagriformes. Analysis of DNA sequences supports three distinct groups, each with characteristic chromosome numbers and morphology. There is little sequence divergence within these groups, which reflects rapid evolution, perhaps within the last 500 000 years. Two groups comprise montane species of the eastern South Island with chromosome numbers of n = 21. The first includes only H. cupressoides, which diverged early from most other hebes. The second includes H. salicornioides, H. armstrongii, and H. annulata. The third group of whipcord hebes is the largest, has n = 20, and is subalpine-alpine. It consists of H. tetragona and H. hectorii which occupy the wetter mountains along the axial ranges except for a gap of 320 km in central Westland, H. lycopodioides and H. imbricata which occupy drier South Island mountains, and H. propinqua which grows in the south-east of the South Island. H. ochracea from western Nelson appears to be an allopolyploid hybrid between members of the second and third lineages. Based on these results, the following new combinations are made: Hebe hectorii

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“…For Hebe cupressoides, both Heads (1994) and Widyatmoko & Norton (1997) map a range extending considerably north-and southwards from that shown in Fig. 1A.…”

Section: Reliability Of Distribution Recordsmentioning

confidence: 77%

“…H. cupressoides (Fig. IA) has been recorded in scattered eastern South Island localities between altitudes of 620 and 1080 m, from inland Marlborough to Lake Te Anau, but may no longer exist at some of these (Widyatmoko & Norton 1997 (Tables 1 and 2).…”

Section: Reliability Of Distribution Recordsmentioning

confidence: 99%

Whipcord Hebes ‐ systematics, distribution, ecology and evolution

Wagstaff

Wardle

1999

New Zealand Journal of Botany

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“…Baskin and Baskin, 1986;Oostermeijer et al, 1994;Widyatmoko and Norton, 1997). It is important, however, to keep in mind that there are no universal rules for interpreting population structure, as distribution shapes and abundances of different life stage classes might differ considerably among and even within species, depending not only on population trends, but simply on the local past history of the place, or the life history of the species in a particular habitat (e.g.…”

Section: Is There Any Evidence Of Past or Current Declines?mentioning

confidence: 99%

An evaluation of the status of five threatened plant species in the Pyrenees

García

Guzmán

Goñi³

2002

Biological Conservation

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In this paper we assess the conservation status of five of the most threatened species in the Pyrenean range (listed in the European Habitats Directive), and present updates of their distribution, reliable censuses to estimate population sizes, population growth rate, population structure, longevity, reproductive success and frequency of herbivory. Recent surveys and careful censuses revealed that the four taxa exclusively restricted to rocky habitats (Borderea chouardii, Androsace pyrenaica, Petrocoptis pseudoviscosa, Petrocoptis montsicciana) have more populations and/or individuals than previously thought. The remaining species, an orchid (Cypripedium calceolus), showed an important decline in population number. So while the rupicolous taxa might be considered naturally rare, the orchid is becoming rare. We failed to find evidence of current poor performance within populations, as recruitment was detected, population growth rate was quite stable in recent years, fruit and seed set was apparently adequate, and herbivory and predation were absent or very low. Additionally, most of the species show a long life span, which might buffer them against demographic and environmental stochasticity in absence of human disturbance. #

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“…Therefore, we suggest that a threshold might exist on the gradient of modification, beyond which an increase in exotic dominance at the expense of native species is inevitable, regardless of management, at least in the medium term. Identification of this threshold would indicate the practicability of post-pastoral conservation and restoration of indigenous communities in alluvial grasslands: beyond this point, the cessation of grazing would not lead to regeneration of native grassland, and threatened native species that are vulnerable to competition would only be further disadvantaged by increased exotic grass growth (e.g., in Olearia hectorii, see Rogers 1996; in Hebe cupresswides, see Widyatmoko & Norton 1997) Such a threshold is likely to vary between alluvial systems according to climate, soil factors (including fertility and natural disturbance regimes), and the local flora, and its definition would require the collation and analysis of long-term data from variously modified alluvial sites across an appropnate environmental range…”

Section: Post-pastoral Changesmentioning

confidence: 99%