干旱区生态环境知识资源中心(Arid): Demography of baobab (Adansonia digitata L.) population in different land uses in the semi -arid areas of Tanzania

Arid

DOI	10.1016/j.gecco.2020.e01372
	Demography of baobab (Adansonia digitata L.) population in different land uses in the semi -arid areas of Tanzania
	Msalilwa, Upendo L.; Ndakidemi, Patrick A.; Makule, Edna E.; Munishi, Linus K.
通讯作者	Msalilwa, UL (corresponding author), Nelson Mandela African Inst Sci & Technol, Dept Sustainable Agr Biodivers & Ecosyst Manageme, Arusha, Tanzania.
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
ISSN	2351-9894
出版年	2020
卷号	24
英文摘要	Baobab is a deciduous non-timber tree species that are facing severe threats from both anthropogenic and climatic pressures across its range states. This study assessed natural rates of recruitment and associated threats of baobabs within and across different land-use types in semi-arid areas of Tanzania. The study was based on a stratified random sampling design composed of the following land-use types: strictly protected areas, non-strictly protected areas, and unprotected areas. Rates of recruitment were measured from a total of 337 grids (representing 40% of semi-arid land) in three different land-use types in a plot measuring 1 km long and 50 m wide. Results show that juvenile, sub-adult and adult baobab populations varied significantly (p < 0.001) within and across land-use types with only 4.7% of surveyed plots having a few juveniles (about four stems per plot) across the study area. The density of adult, sub-adult and juvenile populations were 1.53 +/- 0.105, 0.82 +/- 0.149 and 0.33 +/- 0.253 plants/ha respectively with strictly protected areas (national parks) supporting the most abundant (53%) of the adult trees. Furthermore, the results show inverse J-shaped and bell-shaped distribution in the strictly protected areas and unprotected areas, respectively. The densities of mature baobabs were found to be higher than juvenile baobabs in all three land-use types. The number of baobabs damaged was higher than undamaged in all land-use types. Our results suggest that anthropogenic threats are higher than biophysical factors in driving the species to mortality and population extirpation. Likely, baobab size and distribution across land-use types are mostly influenced by herbivory and fire that likely limit the establishment in most of these areas. Strategies promoting the recruitment and sustainable harvesting practices of baobab would perhaps be the best options to support the population persistence in different land uses in semi-arid areas. The study recommends more studies to understand the factors affecting germination and recruitment rates in order to predict future distributions in semi-arid environments. Also in defining and planning for different land-use system, baobab species should be taken into consideration and in particular in agroforestry farms can easily qualify as a tree crop. Promotion of active recruitment through planting especially in communal lands and protection from herbivory is required if we are to overcome the recruitment bottlenecks as influenced by increasing impacts of land use and climate change and overexploitation. The intentional growing of trees and shrubs in combination with crops cultivation and forage production is also recommended to smallholder farmers. (C) 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license.
英文关键词	African baobab Conservation Distribution Semi-arid areas Stem density Land-use
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000608482400006
WOS关键词	ACACIA-TORTILIS WOODLAND ; GONAREZHOU NATIONAL-PARK ; LOXODONTA-AFRICANA ; ELEPHANT ; SAVANNA ; TREE ; DISTRIBUTIONS ; DAMAGE ; BARK ; IMPACT
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348886
作者单位	[Msalilwa, Upendo L.; Ndakidemi, Patrick A.; Munishi, Linus K.] Nelson Mandela African Inst Sci & Technol, Dept Sustainable Agr Biodivers & Ecosyst Manageme, Arusha, Tanzania; [Makule, Edna E.] Nelson Mandela African Inst Sci & Technol, Dept Food & Nutr Sci, Arusha, Tanzania; [Msalilwa, Upendo L.; Ndakidemi, Patrick A.; Makule, Edna E.; Munishi, Linus K.] Nelson Mandela African Inst Sci & Technol, Ctr Res Agr Adv Teaching Excellence & Sustainabil, Arusha, Tanzania; [Msalilwa, Upendo L.] Tanzania Forestry Res Inst TAFORI, Directorate Forest Utilizat, Morogoro, Tanzania
推荐引用方式 GB/T 7714	Msalilwa, Upendo L.,Ndakidemi, Patrick A.,Makule, Edna E.,et al. Demography of baobab (Adansonia digitata L.) population in different land uses in the semi -arid areas of Tanzania[J],2020,24.
APA	Msalilwa, Upendo L.,Ndakidemi, Patrick A.,Makule, Edna E.,&Munishi, Linus K..(2020).Demography of baobab (Adansonia digitata L.) population in different land uses in the semi -arid areas of Tanzania.GLOBAL ECOLOGY AND CONSERVATION,24.
MLA	Msalilwa, Upendo L.,et al."Demography of baobab (Adansonia digitata L.) population in different land uses in the semi -arid areas of Tanzania".GLOBAL ECOLOGY AND CONSERVATION 24(2020).