Diversity and biogeographical characteristics of lycophytes and ferns in Mufu Mountains, China

doi:10.17520/biods.2019177

Abstract

Abstract:

Field investigation and herbarium specimen information revealed that 261 species of lycophytes and ferns, belonging to 72 genera and 26 families were found in Mountain Mufu. It was characterized by Dryopteris-Asplenium flora with strong transiting distribution from east to west. The species richness was the highest (224 species) in Mount Lushan and the species density (2.09 species/km ²) was the highest in Mount Mufu. Besides Dryopteris included 29 species, Asplenium, Lepisorus and Selaginella were more abundant in Mount Lushan, Mount Jiugong and Mount Mufu, respectively. It shared only 95 common species among these three mountains, and the phenomena of neo-endemic genera and species was obvious. There were high restrictions on differentiation of genera and species in this area, which showed that monotypic family/genus and depauperate family/genus account for more than 60% of the total families and 80% of the total genera. The ratios of tropical elements to temperate elements (R/T) were 2.6 and 2.3 at the family and the generic level with tropical elements. Compared with the mountains in the same latitude zone, the R/T value at generic level in the junction zone of mid-subtropics and north subtropics was between 2.18-2.36. The R/T value was 0.2 at specific level with obvious temperate elements, which was an important component of the temperate flora of Luoxiao Mountains. The flora of lycophytes and ferns in this area was closely related to the flora of East and South China, showing the intersection of the two floristic components.

Key words: Mufu Mountains, diversity of pteridophytes, subtropical mountain, biogeography, R/T value

Hongli Ji, Xuanhuai Zhan, Li Zhang, Yansong Peng, Saixia Zhou, Wan Hu. Diversity and biogeographical characteristics of lycophytes and ferns in Mufu Mountains, China[J]. Biodiv Sci, 2019, 27(11): 1251-1259.

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URL: https://www.biodiversity-science.net/EN/10.17520/biods.2019177

https://www.biodiversity-science.net/EN/Y2019/V27/I11/1251

Figures/Tables 6

References 37

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等级 Grade	科数 No. of family (%)	所含属数 No.of genera in the family (%)	所含种数 No.of species in the family (%)	等级 Grade	属数 No. of genus (%)	所含种数 No. of species in the genus (%)
大科( ≥ 20种) Large family ( ≥ 20 species)	5 (19.2)	39 (54.2)	179 (68.6)	大属( ≥ 20种) Large genus ( ≥ 20 species)	1 (1.4)	29 (11.1)
较大科(10-19种) Secondary family (10-19 species)	3 (11.5)	7 (9.7)	41 (15.7)	较大属(10-19种) Secondary genus (10-19 species)	6 (8.3)	73 (28.0)
中等科(5-9种) Medium family (5-9 species)	2 (7.7)	5 (6.9)	11 (4.2)	中等属(5-9种) Medium genus (5-9 species)	8 (11.1)	49 (18.8)
寡种科(2-4种) Depauperate family (2-4 species)	8 (30.8)	13 (18.1)	22 (8.4)	寡种属(2-4种) Depauperate genus (2-4 species)	31 (43.1)	84 (32.2)
单种科(1种) Monotypic family (1 species)	8 (30.8)	8 (11.1)	8 (3.1)	单种属(1种) Monotypic genus (1 species)	26 (36.1)	26 (9.9)
合计 Total	26 (100)	72 (100)	261 (100)	合计 Total	72 (100)	261 (100)

等级 Grade	科数 No. of family (%)	所含属数 No.of genera in the family (%)	所含种数 No.of species in the family (%)	等级 Grade	属数 No. of genus (%)	所含种数 No. of species in the genus (%)
大科( ≥ 20种) Large family ( ≥ 20 species)	5 (19.2)	39 (54.2)	179 (68.6)	大属( ≥ 20种) Large genus ( ≥ 20 species)	1 (1.4)	29 (11.1)
较大科(10-19种) Secondary family (10-19 species)	3 (11.5)	7 (9.7)	41 (15.7)	较大属(10-19种) Secondary genus (10-19 species)	6 (8.3)	73 (28.0)
中等科(5-9种) Medium family (5-9 species)	2 (7.7)	5 (6.9)	11 (4.2)	中等属(5-9种) Medium genus (5-9 species)	8 (11.1)	49 (18.8)
寡种科(2-4种) Depauperate family (2-4 species)	8 (30.8)	13 (18.1)	22 (8.4)	寡种属(2-4种) Depauperate genus (2-4 species)	31 (43.1)	84 (32.2)
单种科(1种) Monotypic family (1 species)	8 (30.8)	8 (11.1)	8 (3.1)	单种属(1种) Monotypic genus (1 species)	26 (36.1)	26 (9.9)
合计 Total	26 (100)	72 (100)	261 (100)	合计 Total	72 (100)	261 (100)

分布区类型 Areal type	科 Family		属 Genus		种 Species
分布区类型 Areal type	数量 Number	%	数量 Number	%	数量 Number	%
1. 世界分布 Cosmopolitan	8	-	19	-	6	-
热带分布 Tropical Distribution
2. 泛热带分布 Pantropic	9	50.0	19	35.8	4	1.6
3. 旧大陆热带分布 Old World Tropics	1	5.6	6	11.3	3	1.2
4. 热带亚洲和热带美洲分布 Trop. Asia & Trop. Amer. Disjuncted	1	5.6	1	1.9	2	0.8
5. 热带亚洲至热带大洋洲分布 Trop. Asia to Trop. Australasia	0	0	2	3.8	13	5.1
6. 热带亚洲至热带非洲分布 Trop. Asia to Trop. Africa	1	5.6	6	11.3	2	0.8
7. 热带亚洲分布 Trop. Asia	1	5.6	3	5.7	18	7.1
热带成分小计 Subtotal	13	72.2	37	69.8	42	16.5
温带分布 Temperate Distribution
8. 北温带分布 North temperate	4	22.2	5	9.4	4	1.6
9. 东亚和北美洲间断分布 E. Asia & N. Amer. Disjuncted	0	0	0	0	0	0
10. 旧大陆温带分布 Old World Temperate	0	0	0	0	1	0.4
11. 温带亚洲分布 Temperate Asia	0	0	2	3.8	32	12.5
12. 东亚分布 East Asia	(1)	(5.6)	(9)	(17.0)	(136)	(53.3)
12-1. 东亚广布(H-S-J)	1	5.6	6	11.3	46	18.0
12-2. 中国-喜马拉雅(S-H)	0	0	1	1.9	18	7.1
12-3. 中国-日本(S-J)	0	0	2	3.8	72	28.2
13. 中国特有分布 Endemic to China	0	0	0	0	40	15.7
温带成分小计 Subtotal	5	27.8	16	30.2	213	83.5
总计 Total	26	100	72	100	261	100

分布区类型 Areal type	科 Family		属 Genus		种 Species
分布区类型 Areal type	数量 Number	%	数量 Number	%	数量 Number	%
1. 世界分布 Cosmopolitan	8	-	19	-	6	-
热带分布 Tropical Distribution
2. 泛热带分布 Pantropic	9	50.0	19	35.8	4	1.6
3. 旧大陆热带分布 Old World Tropics	1	5.6	6	11.3	3	1.2
4. 热带亚洲和热带美洲分布 Trop. Asia & Trop. Amer. Disjuncted	1	5.6	1	1.9	2	0.8
5. 热带亚洲至热带大洋洲分布 Trop. Asia to Trop. Australasia	0	0	2	3.8	13	5.1
6. 热带亚洲至热带非洲分布 Trop. Asia to Trop. Africa	1	5.6	6	11.3	2	0.8
7. 热带亚洲分布 Trop. Asia	1	5.6	3	5.7	18	7.1
热带成分小计 Subtotal	13	72.2	37	69.8	42	16.5
温带分布 Temperate Distribution
8. 北温带分布 North temperate	4	22.2	5	9.4	4	1.6
9. 东亚和北美洲间断分布 E. Asia & N. Amer. Disjuncted	0	0	0	0	0	0
10. 旧大陆温带分布 Old World Temperate	0	0	0	0	1	0.4
11. 温带亚洲分布 Temperate Asia	0	0	2	3.8	32	12.5
12. 东亚分布 East Asia	(1)	(5.6)	(9)	(17.0)	(136)	(53.3)
12-1. 东亚广布(H-S-J)	1	5.6	6	11.3	46	18.0
12-2. 中国-喜马拉雅(S-H)	0	0	1	1.9	18	7.1
12-3. 中国-日本(S-J)	0	0	2	3.8	72	28.2
13. 中国特有分布 Endemic to China	0	0	0	0	40	15.7
温带成分小计 Subtotal	5	27.8	16	30.2	213	83.5
总计 Total	26	100	72	100	261	100

	庐山 Mount Lushan	九宫山 Mount Jiugong	幕阜山 Mount Mufu
科相似性 Similarity at family level
庐山 Mount Lushan	1.00
九宫山 Mount Jiugong	0.94	1.00
幕阜山 Mount Mufu	0.87	0.80	1.00
属相似性 Similarity at genus level
庐山 Mount Lushan	1.00
九宫山 Mount Jiugong	0.96	1.00
幕阜山 Mount Mufu	0.80	0.82	1.00
种相似性 Similarity at species level
庐山 Mount Lushan	1.00
九宫山 Mount Jiugong	0.72	1.00
幕阜山 Mount Mufu	0.68	0.65	1.00
特有种相似性 Similarity at endemism level
庐山 Mount Lushan	1.00
九宫山 Mount Jiugong	0.53	1.00
幕阜山 Mount Mufu	0.59	0.39	1.00
种相似性 Similarity at species level
		幕阜山脉 Mufu Mountains
东侧: 怀玉山脉 East: Huaiyu Mountains		0.42
西侧: 武陵山脉 West: Wuling Mountains		0.26
南侧: 武功山脉 South: Wugong Mountains		0.60
北侧: 大别山脉 North: Dabie Mountains		0.40