Preliminary observations on the evolution of endemic angiosperms of Ullung Island, Korea

Sun, Byung Yun; Stuessy, Tod F.

doi:10.1017/cbo9780511721823.013

Cited by 29 publications

(42 citation statements)

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“…This site contains about 700 species of vascular plants (Sun and Stuessy, 1998). Among them, 5. takesimensis is the unique species of that genus whereas, on the Peninsula, 8 other species are distributed, but not takesimensis (Lee and Yamazaki, 1983).…”

mentioning

confidence: 99%

Spatial distribution patterns and implications for conservation ofScrophularia takesimensis (Scrophulariaceae), an endangered endemic species on Ulleung Island, Korea

Lim

Lee

et al. 2008

J. Plant Biol.

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As part of an on-going effort to conserve endangered and endemic Scrophularia takesimensis (Scrophulariaceae), we analyzed its spatial distribution patterns by applying an index of dispersion, plant-to-all-plant distances, and the varying quadrat size method. Three indices --Dispersion, Morisita, and Standardized Morisita --all revealed clumping with small aggregates, and distances between aggregates were more or less regular. The asymptote level occurred at a distance of 20 to 30 m; the distance showing 90% of cumulative frequency coincided with 20 to 21 m; 95%, 24 to 25 m; and 99%, 31 to 32 m. The 20 m• 20 m and 40 rex40 m quadrats contained 25 and 40 plants, respectively. We conclude that this number of individuals and size of area are the minimum required for the conservation of this species.

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confidence: 99%

Spatial distribution patterns and implications for conservation ofScrophularia takesimensis (Scrophulariaceae), an endangered endemic species on Ulleung Island, Korea

Lim

Lee

et al. 2008

J. Plant Biol.

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“…3). A propensity of enlargement of body size is commonly found in endemic species on Ulleung Island, such as Acer okamotoanum Nakai, Hepatica maxima Nakai, and Rubus takesimensis Nakai (Sun and Stuessy 1998), and also widely known on other islands (Carlquist 1965).…”

Section: Phylogenetic Relationship Of P Insularis Within Spiraeeaementioning

confidence: 99%

“…It is uncertain about the conservation status on nonendemic native taxa on Ulleung Island that are also distributed elsewhere. Little is known to what extent these native plants may actually be distinct taxa because most current recognition of endemic vs. nonendemic category was primarily derived from floristic surveys and because morphological differentiation of insular plants is weak (Sun and Stuessy 1998). The recent phylogenetic study of Tsuga (Havill et al 2008) shows the possibility that biodiversity on the island may have been underestimated.…”

Section: Conservation Implicationsmentioning

confidence: 99%

“…Of approximately 700 species of vascular plants on the island, 41 species cannot be found elsewhere in the world but Ulleung Island (Nakai 1919;Oh 1978;Lee and Yang 1981;Lee et al 1997;Lee 1998;Sun and Stuessy 1998;Lim et al 2003Lim et al , 2005. These endemic species are phylogenetically dispersed over 36 genera in 25 families, which suggests that each of these species evolved from a founder population of a species without subsequent diverging speciation events, a mode of speciation often referred to as anagenetic speciation (Stuessy et al 1990).…”

mentioning

confidence: 99%

“…A recent survey demonstrated that Ulleung Island exhibits the highest level of anagenetic S.-H. Oh (*) : L. Chen speciation among oceanic and continental islands in the Pacific and Atlantic Ocean , illustrating that Ulleung Island is an excellent system to study the early stages of evolution. Numerous systematic and evolutionary studies have investigated a range of biological aspects on the endemic species, encompassing genetic diversity, taxonomic identity, phylogenetic relationship, and the origin of species (Park et al 1993;Suh et al 1996;Shin and Choi 1997;Sun et al 1997;Chung et al 1998;Sun and Stuessy 1998;Kim et al 2000Kim et al , 2002Kim et al , 2006Pfosser et al 2002;Weiss et al 2002;Woo et al 2002;Chang and Jeon 2003;Ku et al 2004;Lim et al 2006;Ohkawa et al 2006;Pfosser et al 2006), which have improved our understanding of the unique biodiversity on Ulleung Island.…”

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confidence: 99%

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Phylogenetic Relationship of Physocarpus insularis (Rosaceae) Endemic on Ulleung Island: Implications for Conservation Biology

Chen

Kim

et al. 2010

J. Plant Biol.

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Ulleung Island is a biodiversity hot spot harboring approximately 700 species of vascular plants with high number of endemic taxa. Physocarpus insularis, one of the 41 endemic species, has an extremely restricted distribution range on the very small, geologically young oceanic island. Phylogenetic relationship of P. insularis, however, remained highly controversial whether it is conspecific with Spiraea chamaedryfolia or a distinct species in Physocarpus, making it difficult to establish necessary conservation programs. We examined comparative morphology of Physocarpus and Spiraea and reconstructed the phylogeny of the rbcL, matK, ndhF, and trnL-trnF regions from the exemplars of Rosaceae. The results strongly supported the placement of P. insularis within Spiraea. Further phylogenetic analyses of tribe Spiraeeae based on the trnL-trnF and internal transcribed spacer data showed that P. insularis is closely related to S. chamaedryfolia. Morphological analysis revealed that P. insularis differs from S. chamaedryfolia by having larger leaf blades that are subcordate or truncate at base. Results of this study suggest that P. insularis should be recognized as a distinct taxon in Spiraea and that conservation efforts on Ulleung Island should focus on protecting its natural environment to conserve evolutionary patterns and processes in addition to specific conservation programs for species in peril.

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Evolution of Dystaenia takesimana (Apiaceae), endemic to Ullung Island, Korea

et al. 2005

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Preliminary observations on the evolution of endemic angiosperms of Ullung Island, Korea

Cited by 29 publications

References 0 publications

Spatial distribution patterns and implications for conservation ofScrophularia takesimensis (Scrophulariaceae), an endangered endemic species on Ulleung Island, Korea

Spatial distribution patterns and implications for conservation ofScrophularia takesimensis (Scrophulariaceae), an endangered endemic species on Ulleung Island, Korea

Phylogenetic Relationship of Physocarpus insularis (Rosaceae) Endemic on Ulleung Island: Implications for Conservation Biology

Evolution of Dystaenia takesimana (Apiaceae), endemic to Ullung Island, Korea

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