scholarly journals Analysis of the Spatial Relationship between Cattle and Wild Ungulates across Different Land-Use Systems in a Tropical Savanna Landscape

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Geoffrey W. Kinga ◽  
John Mironga ◽  
Wilfred O. Odadi
Keyword(s):  
Land Use ◽  
Feeding Habits ◽  
Spatial Relationship ◽  
Distribution Data ◽  
Spatial Relationships ◽  
Wild Ungulates ◽  
Land Use Systems ◽  
Land Use Types ◽  
Body Sizes

In many African savanna landscapes, domestic and wild herbivores cooccur across different land-use systems, but the role of land-use in shaping their spatial relationship is poorly understood. We evaluated the spatial relationship between cattle and wild herbivores categorized by body sizes and feeding habits across different land-use types, namely, private ranches (PR), transitional lands (TRL), and pastoral grazing areas (PGA), in Laikipia County, Kenya. Cattle and wild herbivores spatial distribution data were obtained from Kenya’s Department of Resources Survey and Remote Sensing (DRSRS). Spatial relationships between cattle and different wild herbivore guilds were analyzed using Ripley’s bivariateK12function. In PR, wild herbivore guilds showed significant attraction to cattle at short distances. In TRL, wild grazers, mixed feeders, megaherbivores, and medium-sized ungulates exhibited significant attraction to cattle. Additionally, repulsion was observed between cattle and browsers at short distances under this land-use system. In PGA, wild grazers, mixed feeders, and megaherbivores repelled strongly with cattle at short distances while browsers and medium-sized ungulates were significantly attracted to cattle. Cattle and wild herbivores were more randomly and independently distributed in PR than in TRL and PGA. These spatial relationships imply better coexistence between cattle and wild herbivores in PR than in TRL and PGA.

scholarly journals The Role of Land Use Types and Water Chemical Properties in Structuring the Microbiomes of a Connected Lake System

2020 ◽  
Vol 11 ◽  
Author(s):  
Sophi Marmen ◽  
Lior Blank ◽  
Ashraf Al-Ashhab ◽  
Assaf Malik ◽  
Lars Ganzert ◽  
...  
Keyword(s):  
Land Use ◽  
Chemical Properties ◽  
Lake System ◽  
Land Use Types

scholarly journals Aboveground Biomass Distribution in a Multi-Use Savannah Landscape in Southeastern Kenya: Impact of Land Use and Fences

Land ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 381
Author(s):  
Edward Amara ◽  
Hari Adhikari ◽  
Janne Heiskanen ◽  
Mika Siljander ◽  
Martha Munyao ◽  
...  
Keyword(s):  
Land Use ◽  
Aboveground Biomass ◽  
Laser Scanning ◽  
Wildlife Conservation ◽  
Vital Role ◽  
Google Earth ◽  
Conservation Area ◽  
Land Use Types ◽  
Land Cover Map

Savannahs provide valuable ecosystem services and contribute to continental and global carbon budgets. In addition, savannahs exhibit multiple land uses, e.g., wildlife conservation, pastoralism, and crop farming. Despite their importance, the effect of land use on woody aboveground biomass (AGB) in savannahs is understudied. Furthermore, fences used to reduce human–wildlife conflicts may affect AGB patterns. We assessed AGB densities and patterns, and the effect of land use and fences on AGB in a multi-use savannah landscape in southeastern Kenya. AGB was assessed with field survey and airborne laser scanning (ALS) data, and a land cover map was developed using Sentinel-2 satellite images in Google Earth Engine. The highest woody AGB was found in riverine forest in a conservation area and in bushland outside the conservation area. The highest mean AGB density occurred in the non-conservation area with mixed bushland and cropland (8.9 Mg·ha−1), while the lowest AGB density (2.6 Mg·ha−1) occurred in overgrazed grassland in the conservation area. The largest differences in AGB distributions were observed in the fenced boundaries between the conservation and other land-use types. Our results provide evidence that conservation and fences can create sharp AGB transitions and lead to reduced AGB stocks, which is a vital role of savannahs as part of carbon sequestration.

scholarly journals Analyzing the Role of Shallow Groundwater Systems in the Water Use of Different Land-Use Types in Arid Irrigated Regions

Water ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 634 ◽  
Author(s):  
Dongyang Ren ◽  
Xu Xu ◽  
Quanzhong Huang ◽  
Zailin Huo ◽  
Yunwu Xiong ◽  
...  
Keyword(s):  
Land Use ◽  
Water Use ◽  
Shallow Groundwater ◽  
Land Use Types ◽  
Groundwater Systems

The changing context of land use decisions: three family farms in the Yam Cultivation Zone of eastern Nigeria, 1964-1977

Africa ◽  
1981 ◽  
Vol 51 (2) ◽  
pp. 678-693 ◽  
Author(s):  
L.C. Uzozie
Keyword(s):  
Land Use ◽  
Civil War ◽  
Time Series Data ◽  
Cropping System ◽  
Local Variation ◽  
Series Data ◽  
Family Farms ◽  
Land Use Systems ◽  
Basic Set

Opening ParagraphThe area occupied by the Igbo-speaking people of eastern Nigeria ranks high among West Africa's yam producing zones. Whereas the yam is the Igbo food crop par excellence there is nevertheless considerable local variation in local farming practice and land-use systems. This paper describes three farm units in different parts of Igbo country, indicating the role of yam in the cropping system. The material is derived from surveys undertaken in 1977, but in two of the three cases it has been possible to compare the information with similar surveys undertaken by the author in 1964, prior to the Nigerian civil war. Three case-study farms cannot constitute a sample in any statistical sense and no generalization is possible. The material is presented because the profound changes experienced in the last fifteen years ensure that any time series data, however patchy, are of great intrinsic interest, and because it serves to indicate the extent to which land use systems at the micro-level may differ, even though the basic set of crops may be broadly similar. The three farms studied are representative of their ecological zone: the first reflecting conditions in the zone of highest population density and greatest land shortage; the second, in the more open land on the Nsukka plateau, conditions in an area where land shortage is not yet so great as to have obliterated the distinction between intensively farmed compound land and more extensively ‘bush-fallowed’ land; and the third, conditions of relative land-plenty in southern Igboland, where farming systems show marked continuity with conditions before the civil war. The paper stresses the role of yam in the fanning systems concerned, and the subtle interplay of social, economic and ecological factors involved in its continued cultivation.

scholarly journals Impact of Different Land-Use Systems on Soil Physicochemical Properties and Macrofauna Abundance in the Humid Tropics of Cameroon

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Lawrence Tatanah Nanganoa ◽  
Justin Nambangia Okolle ◽  
Valentine Missi ◽  
Jacques Roberto Tueche ◽  
Lewis Dopgima Levai ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Physicochemical Properties ◽  
Humid Tropics ◽  
The Other ◽  
Plant Residues ◽  
Soil Physicochemical Properties ◽  
Land Use Systems ◽  
Land Use Types ◽  
The Impact

The impact of different land-use systems on some soil physicochemical properties and macrofauna abundance in the humid tropics of Cameroon was studied. The land-use types included secondary forest (SF), oil palm plantation (PP), banana plantation (BP), sugarcane plantation (SP), and rubber plantation (RP). Soil particle size distribution, bulk density (BD), pH, organic matter (OM), and number of macrofauna were evaluated. The results showed that OM and number of macrofauna were higher in the SF than in the other land-use types. Pearson’s correlation analysis carried out to determine the relationship between OM and BD showed that OM and BD was strongly negatively related with correlation coefficient of −0.9653. It also showed a strong significant negative correlation between BD and ants population (r = −0.8828) and between soil pH and number of earthworms (r = −0.9072). Based on the results, the SF produced more organic matter and higher number of macrofauna. However, the OM of the other land uses was not low; hence, it could be beneficial to return plant residues to the field for maintaining soil quality.

scholarly journals Spatial modeling on land use change in regional scale of Java Island based-on biophysical characteristics

2020 ◽  
Vol 10 (3) ◽  
pp. 511-523
Author(s):  
Yudi Setiawan ◽  
Kunihiko Yoshino
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Spatial Modeling ◽  
Paddy Rice ◽  
Positive Contribution ◽  
Future Role ◽  
Land Use Types ◽  
The Future ◽  
Intensive Cropping

This study discusses biophysical-based spatial modeling for land-use change in Java Island considering neighborhood interactions between land use types and the changing area. These neighborhood characteristics used in the logistic regression model to estimate the probability of the change events occurrence. Moreover, the future role of land-use change is then projected using the Markov model based on the annual land-use changes map. The results indicate that paddy rice with an irrigation system (double cropping), especially in upland areas has a high positive spatial autocorrelation with the change areas. Residential area, paddy rice, and upland with intensive cropping have a high effect on the probability of change occurrence. Meanwhile, barren lands/dry land, bush-shrub, and mixed garden give a negative correlation to the change occurrences in agricultural lands. In the case of forestland, the results show some land-use types such as upland with intensive cropping and plantation have a positive contribution to the change of land. The accuracy of the model has also assessed through comparison of the projection with the actual area. The results indicate that the future role of each land-use type is different based on the trend period predictor in the model.

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