Island Plants Evolution And Conservation

Island systems researched: Mascarene Islands, St Helena, Ascension Island, Bermuda, French Polynesia and Pacific Islands, Macaronesia

I have a special interest in the island of St Helena.


Cronk, Q.C.B. (2000). The Endemic Flora of St Helena. Anthony Nelson Ltd, Oswestry [with plates painted by Leslie Ninnes].

Selected publications on island biota

Cronk, Q.C. (2016) Conservation of Island Flora and Fauna. In: eLS [Encyclopedia of Life Sciences]. John Wiley & Sons Ltd, Chichester. [doi: 10.1002/9780470015902.a0026274]

Cronk, Q.C. (2016). Plant extinctions take time. Science, 353 (6298), 446-447.

Bailey S, Percy DM, Hefer CA, Cronk QCB (2015) The transcriptional landscape of insect galls: psyllid (Hemiptera) gall formation in Hawaiian Metrosideros polymorpha (Myrtaceae). BMC Genomics 16: 943 doi:10.1186/s12864-015-2109-9

Ojeda DI, Santos-Guerra A, Oliva-Tejera F, Jaen-Molina R, Caujapé-Castells J, Marrero-Rodríguez Á, & Cronk Q. (2014). DNA barcodes successfully identified Macaronesian Lotus (Leguminosae) species within early diverged lineages of Cape Verde and mainland Africa. AoB plants, 6, plu050.

Ojeda I, Santos-Guerra A, Oliva-Tejera F, Valido A, Xue X, Marrero A, Caujapé-Castells J, Cronk QCB (2013) Bird-pollinated Macaronesian Lotus (Leguminosae) evolved within a group of entomophilous ancestors with post-anthesis flower colour change. Perspectives in Plant Ecology, Evolution and Systematics 15:193–204.

Ojeda I, Santos-Guerra A, Caujapé-Castells J, Jaén-Molina R, Marrero A, Cronk QCB (2012) Comparative micromorphology of petals in Macaronesian Lotus (Leguminosae) reveals a loss of papillose conical cells during the evolution of bird pollination. International Journal of Plant Sciences 173: 365-374.

Ojeda I, Santos-Guerra A, Jaén-Molina R, Oliva-Tejera F, Caujapé-Castelis J, Cronk QCB (2012). The origin of bird pollination in Macaronesian Lotus (Loteae, Leguminosae). Molecular Phylogenetics and Evolution 62: 306-18.

Cronk, QCB, Percy DM (2009) Endemism. In Encyclopedia of Islands (RG Gillespie and DA Clague eds). University of California Press.

Reaser, JK, Meyerson, LA, Cronk, Q, De Poorter, M, Eldrege, LG, Green, E, Kairo, M, Latasi, P, Mack, RN, Mauremootoo, J, O'Dowd, D, Orapa, W, Sastroutomo, S, Saunders, A, Shine, C, Thrainsson, S, Vaiutu, L (2007) Ecological and socioeconomic impacts of invasive alien species in island ecosystems. Environmental Conservation 34, 98-111

CRONK, Q.C.B., Kiehn, M., Wagner, W.L. and Smith, J.E. (2005). Evolution of Cyrtandra (Gesneriaceae) in the Pacific Ocean: The origin of a supertramp clade. American Journal of Botany 92, 1017-1024.

Eastwood, A., CRONK, Q.C.B., Vogel, J.C. and Hemp, A. (2004). Comparison of molecular and morphological data on St Helena: Elaphoglossum. Plant Systematics and Evolution 245, 93-106.

Eastwood, A., Vogel, J., Gibby, M. and CRONK, Q.C.B. (2004). Relationships and genetic diversity of endemic Elaphoglossum from St Helena. Plant Systematics and Evolution 245, 107-118.

Percy, D.M., Page, R.D.M. and CRONK, Q.C.B. (2004). Plant-insect interactions: Double-dating associated insect and plant lineages reveals asynchronous radiations. Systematic Biology 53, 120-127.

Eastwood, A., Gibby, M. and CRONK, Q.C.B. (2004). Evolution of St Helena arborescent Astereae (Asteraceae): relationships of the genera Commidendrum and Melanodendron. Botanical Journal Of The Linnean Society 144, 69-83.

Percy, D.M. and CRONK, Q.C.B. (2002). Different fates of island brooms: Contrasting evolution in Adenocarpus, Genista, and Teline (Genisteae, Fabaceae) in the Canary Islands and Madeira. American Journal of Botany 89, 854-864.

Richardson, J.E., Weitz, F.M., Fay, M.F., CRONK, Q.C.B., Linder, H.P., Reeves, G. and Chase, M.W. (2001). Phylogenetic analysis of Phylica L. (Rhamnaceae) with an emphasis on island species: evidence from plastid trnL-F and nuclear internal transcribed spacer (ribosomal) DNA sequences. Taxon 50, 405-427.

CRONK, Q.C.B. (1997). Islands: stability, diversity, conservation. Biodiversity and Conservation 6, 477-493.

Percy, D.M. and CRONK, Q.C.B. (1997). Conservation in relation to mating system in Nesohedyotis arborea, a rare endemic tree from St Helena. Biological Conservation 80, 135-145.

CRONK, Q.C.B. (1995). A new species and hybrid in the St Helena endemic genus Trochetiopsis. Edinburgh Journal of Botany 52, 205-213.

CRONK, Q.C.B. (1992). Relict floras of Atlantic islands: patterns assessed. Biological Journal of the Linnean Society 46, 91-103.

CRONK, Q.C.B. (1990). The history of the St Helena flora: Miocene Trochetiopsis-like pollen from St Helena and the evolution of Trochetiopsis. New Phytologist 114, 159-165.

CRONK, Q.C.B. (1989). The past and present vegetation of St Helena. Journal of Biogeography 16, 47-64.

Wyse Jackson, P.S., Parnell, J.A.N., Strahm, W. and CRONK, Q.C.B. (1989). The propagation of endangered plants in Mauritius. Moorea 7, 35 - 45

J.A.N. Parnell, P.S. Wyse Jackson & W. Strahm and CRONK, Q.C.B. (1989). The description, conservation and historical ecology of the vegetation of Ile aux Aigrettes, Mauritius. Journal of Tropical Ecology 5, 355-374.

Wyse Jackson, P.S., Parnell, J.A.N. and CRONK, Q.C.B. (1988). Notes on the regeneration of two rare Mauritian endemic trees. Tropical Ecology 29, 98-106.

CRONK, Q.C.B. (1987). The history of the endemic flora of St Helena: a relictual series. New Phytologist 105, 509-520.

P.S. Wyse Jackson, J.A.N. Parnell & W. Strahm and CRONK, Q.C.B. (1987). Rare plant propagation in Mauritius. In: Botanic Gardens and the World Conservation strategy. (Eds. D. Bramwell, O. Hamann, V. Heywood & H. Synge), pp. 353-356. Academic Press, London.

CRONK, Q.C.B. (1986). The decline of the St Helena Gumwood Commidendrum robustum. Biological Conservation 35, 173-186.

CRONK, Q.C.B. (1986). Botanical survey of Socotra for conservation and plant genetic resources. WWF Conservation Yearbook 1985/1986. WWF, Gland, Switzerland, pp. 516-517.

Parnell, J.A.N., Wyse Jackson, P.S. and CRONK, Q.C.B. (1986). A paradise about to be lost. New Scientist 1528, 44-47.

CRONK, Q.C.B. (1986). The decline of the St Helena Ebony Trochetiopsis melanoxylon. Biological Conservation 35, 159-172.

CRONK, Q.C.B. (1980). Extinction and survival in the endemic vascular flora of Ascension Island. Biological Conservation 17, 207-219.

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