The diversity and distribution of lianas in the Afromontane rain forests of Ethiopia

Diversity and Distributions - Tập 11 Số 5 - Trang 443-452 - 2005
Feyera Senbeta1, Christine B. Schmitt1, Manfred Denich1, Sebsebe Demissew2, Paul L. G. Velk1, H. Preisinger3, Tadesse Woldemariam1, Demel Teketay4
1Center for Development Research, University of Bonn, Walter Flex‐Str. 3, 53113, Bonn,
2The National Herbarium, Addis Ababa University, Ethiopia,
3Hamburg and
4Forestry Stewardship Council, P. O. Box, AK 118 Anloga‐Kumasi, Ghana

Tóm tắt

ABSTRACTThe diversity and distribution of lianas were studied in five Afromontane rain forests of Ethiopia. Quadrats of 20 × 20 m were laid down along transects in the Bonga, Berhane‐Kontir, Harenna, Yayu and Maji forests. In all forests, 30,917 liana individuals belonging to 123 species in 87 genera and 40 plant families were recorded. The most species‐rich families were Asclepiadaceae (14), Fabaceae (9), Annonaceae (7) and Cucurbitaceae (7). The top 10 dominant families represented 56% of the total number of species. Over 400 other plant species representing different life forms were recorded growing together with lianas. The lianas accounted for over 30% of the total woody plant diversity and over 20% of the total floral diversity in the study areas. The analysis of floristic composition of the forests indicates that the Berhane‐Kontir Forest had the highest Fisher's diversity index α, and Yayu the lowest. Generally, there were low similarities between the forests in terms of species composition. Although lianas were abundant in almost all forests, there was a considerable variation among the forests in terms of density and spatial distribution. The major dispersal modes of lianas were anemochory (30%), mammaliochory (30%), ornithochory and autochory, and the four mechanisms of climbing of lianas were twining (54%), hooking (24%), rooting and use of tendrils. Altitude and human disturbance were found to be important factors affecting liana distribution. The need for sustainable management and use of lianas in the Afromontane rain forests is emphasized.

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Tài liệu tham khảo

Ter Braak J.C., 2003, canoco for windows 4.5 (c) 1997–2002; Biometris — quantitative methods in the life and earth sciences.

Demel T., 1998, Study on forest coffee conservation.

10.1017/S0266467400001231

Edwards S., 1995, Canellaceae to Euphorbiaceae.

Edwards S., 1997, Flora of Ethiopia

Edwards S., 2000, Flora of Ethiopia and Eritrea

Eklundh L., 1996, AVHRR NDVI for monitoring and mapping of vegetation and drought in East African environments

EWNHS, 1996, Important bird areas of Ethiopia

FAO/UNESCO, 1974, Soil Map of the World, 1 : 5,000,000

Friis I. (1992)Forests and forest trees of Northeast Africa. Additional Series XV. Kew Bulletin London.

Friis I., 1982, Studies on the flora and vegetation of Southwest Ethiopia, Opera Botanical, 63, 1

10.1007/978-1-4615-6968-8_1

Gentry A.H., 1985, The botany and natural history of Panama, 29

10.1111/j.1744-7909.2005.00026.x

10.2307/3545512

Gentry A.H., 1995, Biodiversity and conservation of Neotropical montane forests, 103

10.2307/2388737

Hartshorn G.S., 1994, La Selva: ecology and natural history of a Neotropical rain forest, 73

Hedberg I.&Edwards S. eds (1989) Flora of Ethiopia. Vol.3.Pittosporaceae to Araliaceae.The National Herbarium Addis Ababa and Uppsala University Uppsala.

Hedberg I., 2003, Apiaceae to Dipsaceae

10.1890/0012-9658(2001)082[0105:RFFATS]2.0.CO;2

10.2307/2261350

10.1007/978-94-015-7358-0

McAleece N.(1997) Biodiversity professional beta version.The Natural History Museum and Scottish Association for Marine Science.

MesfinA.(1998) Nature and management of Ethiopian soils.Alemaya University of Agriculture Ethiopia.

Mesfin T., 1996, The biodiversity of African plants, 277

10.1007/BF02862825

Murphy H.E.(1968) A report on the fertility status and other data on some soils of Ethiopia.College of Agriculture Haile Sellassie I University Dire Dawa.

10.1046/j.1472-4642.2000.00057.x

10.1017/S0266467401001018

NMSA, 1996, Climatic and agro‐climatic resources of Ethiopia

Perez‐Salicrup D.R., 2001, Lianas and trees in a liana forest of Amazonian Bolivia, Biotropica, 33, 34, 10.1111/j.1744-7429.2001.tb00155.x

10.1126/science.263.5149.954

10.1038/nature00926

10.2307/1937767

Putz F.E., 1991, The biology of vines

10.1016/S0169-5347(02)02491-6

10.1890/0012-9658(2001)082[0913:TGATMO]2.0.CO;2

10.1046/j.1365-2745.2000.00489.x

SolóÌrzano S., 2002, Liana diversity and reproductive attributes in two tropical forests in Mexico, Biodiversity and Conservation, 11, 2002

10.2307/1938806

Tadesse W., 2003, Vegetation of the Yayu forest in SW Ethiopia: impacts of human use and implications for in situ conservation of wild Coffea arabica L. populations.

Tafesse A., 1996, Agroecological zones of Southwest Ethiopia

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Diversity and Distributions

Tập 11 Số 5

443-452

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