scholarly journals The Role of Coffee Based Agroforestry System in Tree Diversity Conservation in Eastern Uganda

2017 ◽  
Vol 10 (2) ◽  
pp. 1-18 ◽  
Author(s):  
Worku Janka Negawo ◽  
Dejene Nigatu Beyene

Abstract Agroforestry farming system comprises considerable cultivated land area in the tropics. Despite the economic and social benefits of the system for farmers, it is also known to have an important role in the conservation of tree species. This study aims to evaluate the composition and distribution of tree species in coffee based agroforestry system to determine the potential for biodiversity conservation. To address the objective of this study, 57 sample plots in farmers’ coffee field and 12 sample plots in forest reserve were surveyed in Eastern Uganda. The result shows that the number of indigenous tree species in coffee farms was lower than that of forest reserve. Similarly, tree species richness per plot, Shannon and Simpson diversity indexes of forest reserve were significantly (p≤0.05) higher than that of coffee farms. However, with the inclusion of exotic tree species, coffee farms were found to be significantly higher than that of forest reserve for the above diversity indexes. On the other hand, the distribution of tree species in the coffee farms were mainly dominated by few tree species indicating the need for measures that ensure the sustainability of those less represented tree species.

2017 ◽  
Vol 47 (4) ◽  
pp. 311-320 ◽  
Author(s):  
Francisco Pinheiro da SILVA ◽  
Rodrigo Ferreira FADINI

ABSTRACT One of the problems affecting the quality of urban trees is their infestation by mistletoes (aerial hemiparasite plants of the order Santalales). Identification of the main types of trees infested, and of the causes of infestation patterns, can help infestation control and the planning of efficient planting regimes. In this sense, the aim of this study was to evaluate the patterns of hemiparasite infestation in trees in an Amazonian urban environment. We aimed to answer (1) which species of mistletoes occur on urban trees in the city of Santarém, in the Brazilian Amazon; (2) what is the proportion and intensity of infestation on infected trees; and (3) if differences in infestation rates among tree species can be explained by mistletoe-tree compatibility. We assessed mistletoe incidence and intensity of infestation on trees in the main avenues of the city. To evaluate the role of mistletoe-tree compatibility in the observed parasitism patterns, we carried out a seed inoculation experiment with seeds of the most abundant mistletoe, Passovia theloneura. Seeds were planted on three tree species (Andira inermis, Handroanthus serratifolius, and Mangifera indica). The overall infestation rate was 19.3%, with exotic tree species more infested than natives. The experiment showed that incompatibility between P. theloneura and the native H. serratifolius is primarily responsible for the observed non-infestation. Mistletoes germinated on A. inermis grew better than those on M. indica, contrary to the infestation prevalence found in the field, suggesting that patterns of infestation are also influenced by seed deposition processes.


2021 ◽  
Vol 9 (1) ◽  
pp. 244
Author(s):  
Adi Saputra ◽  
Daniel Itta ◽  
Asysyifa

The research location is in Maburai Village, Murung Pudak District, Tabalong Regency, South Kalimantan Province, rubber land that uses the rubber agroforestry system as the object of research. The purpose of this study was to analyze the role of rubber agroforestry in order to increase the income of rubber farmers. The method used in this study to find respondents is by using the Accidental Sampling method. Based on the results of the research that has been carried out, the role of rubber agroforestry is divided into 2 parts, namely, rubber plants for sale, and intercrops play a role for sale, self-consumption, and taken by land owners. The contribution from intercropping was only 4 people who sold the intercrops in the form of fruit, the largest income from the intercropping was Rp. 12,000,000 with a percentage of 19% of the total income of Rp. 63,200,000. There are two factors that affect the agroforestry system, namely internal factors based on farmers' experience, motivation to carry out the rubber agroforestry system, land area, number of plants other than rubber, and types of plants other than rubber, while external factors are the absence of support by rubber agro-forestry extension agencies in Maburai Village, and community leaders.


2012 ◽  
Vol 65 (1) ◽  
pp. 128-144 ◽  
Author(s):  
Godar Sene ◽  
Mansour Thiao ◽  
Ramatoulaye Samba-Mbaye ◽  
Damase Khasa ◽  
Aboubacry Kane ◽  
...  

Science ◽  
2019 ◽  
Vol 365 (6458) ◽  
pp. 1108-1113 ◽  
Author(s):  
Carsten Rahbek ◽  
Michael K. Borregaard ◽  
Robert K. Colwell ◽  
Bo Dalsgaard ◽  
Ben G. Holt ◽  
...  

Mountains contribute disproportionately to the terrestrial biodiversity of Earth, especially in the tropics, where they host hotspots of extraordinary and puzzling richness. With about 25% of all land area, mountain regions are home to more than 85% of the world’s species of amphibians, birds, and mammals, many entirely restricted to mountains. Biodiversity varies markedly among these regions. Together with the extreme species richness of some tropical mountains, this variation has proven challenging to explain under traditional climatic hypotheses. However, the complex climatic characteristics of rugged mountain regions differ fundamentally from those of lowland regions, likely playing a key role in generating and maintaining diversity. With ongoing global changes in climate and land use, the role of mountains as refugia for biodiversity may well come under threat.


2020 ◽  
Vol 6 (1) ◽  
pp. 123-147
Author(s):  
Hardawati Yahya ◽  
Florina Rosmin ◽  
Jurry Foo ◽  
Ricky Alisky Martin

Degradasi hutan seringkali dikaitkan dengan Orang Asal terutamanya yang tinggal di pinggir atau di dalam hutan simpan, apabila sistem pertanian tradisional yang mereka warisi daripada turun-menurun menggunakan kaedah yang kurang efektif dan memberi kesan negatif kepada sumber hutan. Oleh yang sedemikian, kefahaman tentang peranan Orang Asal dalam membantu dan mengurangkan kesan degradasi hutan adalah sangat penting. Secara khususnya, kajian ini telah dijalankan untuk: (1) mengkaji jenis sistem pertanian tradisional yang diamalkan oleh Orang Asal di Hutan Simpan Gana-Lingkabau, dan (2) mengenalpasti peranan Orang Asal dalam mengurangkan degradasi hutan. Sebanyak 10 buah kampung telah terlibat dalam kajian ini, di mana kampung-kampung ini telah ditempatkan semula di luar kawasan Hutan Simpan Gana-Lingkabau, Kota Marudu, Sabah. Kaedah trangulasi termasuk pendekatan temubual secara bersemuka, survei menggunakan borang soal selidik dan pemerhatian lapangan telah dilakukan. Hasil daripada kajian ini mendapati bahawa majoriti isi rumah yang tinggal di kawasan ini terlibat dalam sistem pertanian tradisional, sebahagian besarnya penanaman jenis tanaman selingan, perhutani (perhutanan-tani), dan tanaman di sekitar kawasan rumah. Kajian ini juga mendedahkan bahawa kebanyakan isi rumah menyatakan mereka memainkan peranan yang penting dalam penanaman perhutani, mengurangkan kebakaran hutan, dan pertanian pindah serta terlibat dalam penanaman giliran dan tanaman selingan. Oleh yang sedemikian, berdasarkan kepada hasil dapatan daripada kajian ini, ia boleh disimpulkan bahawa peranan dan penglibatan Orang Asal dalam sistem pertanian tradisional yang digabungkan dengan pengurusan perhutanan, dapat membantu mengurangkan kesan degradasi hutan, disamping itu dapat meningkatkan peranan mereka dalam bersama-sama menguruskan sumber hutan. Forest degradation is frequently associated with indigenous peoples, especially those living in the fringe or within the forest reserves, when the traditional farming system they inherited from generations use ineffective methods and negatively affect forest resources. Therefore, understanding the role of indigenous people in helping and mitigating the effects of deforestation is vital. Importantly, this study was undertaken to (1) examine the types of traditional farming systems practised by indigenous people in Gana-Lingkabau Forest Reserve, and (2) identify the role of indigenous peoples in reducing deforestation. Ten villages were involved in this study, which reallocated outside of the Gana-Lingkabau Forest Reserve, Kota Marudu, Sabah. Triangulation methods including face-face interviews, survey using questionnaire and field observations were performed. The findings of the study found that the majority of households residing in this area were involved in traditional farming systems, predominantly integrated farming, agroforestry, and homegarden. The findings also revealed that most households stated that they play a significant role in agroforestry, reducing forest fires, shifting cultivation, and were involved in rotation and integrated farming. Therefore, based on the work conducted in this study, it can be concluded that the role and involvement of indigenous people in the traditional farming system combined with forestry management, can help reduce the effects of deforestation, while enhancing their role in jointly managing forest resources.


2004 ◽  
Vol 20 (4) ◽  
pp. 449-457 ◽  
Author(s):  
Norbert J. Cordeiro ◽  
David A. G. Patrick ◽  
Billy Munisi ◽  
Vipul Gupta

Early successional tree species typically attract numerous generalist frugivores, many of which serve as seed dispersers. This study evaluated whether several such dispersers facilitated the invasion of an exotic, early successional tree species, Maesopsis eminii (Rhamnaceae), in submontane forests of the East Usambara Mountains, Tanzania. The primary seed dispersers and their dispersal effectiveness were determined through focal watches at eight trees. Only 3 of 13 frugivores that consumed Maesopsis fruits functioned as seed dispersers (silvery-cheeked hornbill Ceratogymna brevis, Fischer's turaco Tauraco fischeri and blue monkey Cercopithecus mitis). On average, hornbills dispersed >26 times more seeds than monkeys, and >3 times as many seeds as turacos per visit and were thus considered the most important disperser. Seed germination was not affected by gut passage through hornbills. Germination in four microhabitats was experimentally evaluated to determine whether microhabitat influences germination success. Large gaps and forest edges had significantly higher germination rates compared with understorey locations; the germination rate in small gaps was not significantly different from that in the understorey. Expansive Maesopsis invasion in the East Usambaras was likely enhanced in both rapidity and scale by the presence of an extremely effective dispersal agent, the silvery-cheeked hornbill.


2014 ◽  
Vol 29 (4) ◽  
pp. 323-332 ◽  
Author(s):  
Erik Dahl Kjær ◽  
Albin Lobo ◽  
Tor Myking
Keyword(s):  

1991 ◽  
Author(s):  
John K. Francis ◽  
Henri A. Liogier
Keyword(s):  

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