A study in endemism : Silene diclinis
Prentice, Honor C. LU
(1976)
In Biological Conservation
10(1).
p.15-30
- Abstract
Silene diclinis (Lag.) M. Laínz is a dioecious endemic with a highly restricted distribution in south-eastern Spain. The sparse literature on the plant is summarised before referring to the results of a study of S. diclinis in the wild. A new description of the species is presented and its taxonomic affinities discussed. Details of the flowering time of S. diclinis, possible pollinators and its population age structure are set out and its wild habitat described. Before examining the possible origin of the distribution of S. diclinis, an attempt is made to clarify the various classifications of endemism that have been widely used in the literature. It is considered that since these classifications are generally based on the supposed... (More)
Silene diclinis (Lag.) M. Laínz is a dioecious endemic with a highly restricted distribution in south-eastern Spain. The sparse literature on the plant is summarised before referring to the results of a study of S. diclinis in the wild. A new description of the species is presented and its taxonomic affinities discussed. Details of the flowering time of S. diclinis, possible pollinators and its population age structure are set out and its wild habitat described. Before examining the possible origin of the distribution of S. diclinis, an attempt is made to clarify the various classifications of endemism that have been widely used in the literature. It is considered that since these classifications are generally based on the supposed origins of endemics they do not form a sound basis for the examination of evidence in individual cases. Types of evidence that can be used to throw light on the history of individual endemics are examined and include evidence gained from experimental taxonomy, pollen and macrofossil analysis and ecological studies. Unfortunately, in the case of S. diclinis there is no direct evidence referring to its past. One hypothesis, based on present distribution and on a consideration of Mediterranean Cenozoic palaeo-environments, is put forward to explain the present restriction of S. diclinis. Finally, the genetic situation in a restricted endemic population, the future of S. diclinis and conservation measures are discussed.
(Less)
- author
- Prentice, Honor C.
LU
- publishing date
- 1976-07
- type
- Contribution to journal
- publication status
- published
- in
- Biological Conservation
- volume
- 10
- issue
- 1
- pages
- 15 - 30
- publisher
- Elsevier
- external identifiers
-
- scopus:31544440874
- ISSN
- 0006-3207
- DOI
- 10.1016/0006-3207(76)90021-5
- language
- English
- LU publication?
- no
- additional info
- Funding Information: My supervisor, Dr S. M. Waiters, has encouraged my interest in endemism and I would like to thank him for all the ideas that he has given me, for his excellent guidance and for critically reading this paper. Professor C. G6mez-Campo has been most helpful and kindly provided me with maps. Professor S. Rivas Martinez kindly examined the Jfitiva relev6s and commented on their phytosociological affinities. Dr H. J. B. Birks determined the mosses collected from the J~itiva relev6s and Mr P. D. Sell determined the composites. I am most grateful to Mr B. Huntley who analysed the soil samples and to Mr Jack Symonds of the University Botanic Garden, Cambridge, for looking after my cultivated stock of S. diclinis. Dr H. L. K. Whitehouse and Dr D. Briggs gave advice on the genetic aspects of this paper and Dr R. W. Hey discussed aspects of Mediterranean geological history. This work was supported by a Science Research Council research studentship which is gratefully acknowledged. Finally, I would like to thank my husband, Colin, for help with the fieldwork and for his constructive criticism during the writing of this paper. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
- id
- e5df04b7-4177-417b-9b5f-971718080467
- date added to LUP
- 2021-04-22 11:50:49
- date last changed
- 2022-06-01 14:50:43
@article{e5df04b7-4177-417b-9b5f-971718080467,
abstract = {{<p>Silene diclinis (Lag.) M. Laínz is a dioecious endemic with a highly restricted distribution in south-eastern Spain. The sparse literature on the plant is summarised before referring to the results of a study of S. diclinis in the wild. A new description of the species is presented and its taxonomic affinities discussed. Details of the flowering time of S. diclinis, possible pollinators and its population age structure are set out and its wild habitat described. Before examining the possible origin of the distribution of S. diclinis, an attempt is made to clarify the various classifications of endemism that have been widely used in the literature. It is considered that since these classifications are generally based on the supposed origins of endemics they do not form a sound basis for the examination of evidence in individual cases. Types of evidence that can be used to throw light on the history of individual endemics are examined and include evidence gained from experimental taxonomy, pollen and macrofossil analysis and ecological studies. Unfortunately, in the case of S. diclinis there is no direct evidence referring to its past. One hypothesis, based on present distribution and on a consideration of Mediterranean Cenozoic palaeo-environments, is put forward to explain the present restriction of S. diclinis. Finally, the genetic situation in a restricted endemic population, the future of S. diclinis and conservation measures are discussed.</p>}},
author = {{Prentice, Honor C.}},
issn = {{0006-3207}},
language = {{eng}},
number = {{1}},
pages = {{15--30}},
publisher = {{Elsevier}},
series = {{Biological Conservation}},
title = {{A study in endemism : Silene diclinis}},
url = {{http://dx.doi.org/10.1016/0006-3207(76)90021-5}},
doi = {{10.1016/0006-3207(76)90021-5}},
volume = {{10}},
year = {{1976}},
}