Determination of the genetic structure of remnant Morus boninensis Koidz. trees to establish a conservation program on the Bonin Islands, Japan

Table 1 Information of sampling sites and trees, such as background of population, location, tree size and vegetation

	Background of the population	Latitude and Longitude		Elevation	Population density
OTJ	putative natural	N27° 10'46"–10'53"	E142° 11'18"–11'24"	33–90 m	Dense
CCJ	mixed¹⁾	N27° 02'40"–06'14"	E142° 11'07"–14'00"	2–300 m	Sparse
KWK	mixed²⁾	N26° 39'32"–39'50"	E142° 08'59"–09'20"	188–334 m	Intermediate
IGM	unknown	N26° 39'38"–39'40"	E142° 08'58"–09'00"	155–172 m	Dense
SKM	putative natural	N26° 40'08"–40'25"	E142° 09'08"–08'37"	200–314 m	Sparse
LPS	putative man-made	N26° 40'52"–40'57"	E142° 09'48"–09'53"	174–183 m	Dense
	Tree size (DBH)	Vegetation
OTJ	15–77 cm	Natural
CCJ	11–84 cm	Various type of vegetation
KWK	17–95 cm	Introduced species dominating
IGM	17–52 cm	Putative natural
SKM	20–119 cm	Natural
LPS	16–49 m	Second growth

¹⁾The planted trees were sampled in northern civilization area and the middle part of the island, trees in the south part of the island supposed to be natural.
²⁾The planted trees are located in the lower elevation (to ca. 240 m), the natural trees are supposed to grow in the higher elevation area.

ISSN: 1472-6785