Ant diversity and abundance in pasture system and two agricultural land uses in the Rashad district, Southern Sudan

Abstract The most common ecological consequence of biodiversity loss is a reduction in ecosystem functions. These responses, however, vary depending on the type of land-use change and the ecological setting. This study investigated the impact of land-use type and ecosystem functions on the ant assemblage of Rashad district, Sudan. Therefore, the purposes of this study are to evaluate the composition and structure of the ant assembly in the station, as well as to determine the trophic guilds and functional groups and their spatial variation in three different land uses. Furthermore, based on the type of land use to determine how the conversion of native vegetation affects the richness and composition of ant species. In each location, we sampled three 20-meter-long transects (Sample plot). Each sample plot consisted of a grid of 12 pitfall traps arranged in three rows of four traps each, with a 2 m spacing between them, replicated six times in a single year. We collected 38 ant species from four subfamilies and 17 genera. Parasyscia lamborni was the most abundant species followed by Bothroponera crassa. Ant diversity was higher in Soy monoculture and Organic farming than in the Pasture. The frequency distributions of ant Functional groups in Soy monoculture and Organic farming were significantly different from the frequency distributions in the pasture. The omnivorous and predator’s trophic guilds were the best represented and regarding functional groups. We found a high proportion of tropical climate specialists and Myrmicinae generalists. These findings suggest that Pasture Activation reduces ant diversity. It can also help to increase the population of species with a diverse diet that predominate in areas where stress and disturbance prevent other ants from reproducing.

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Pengendalian Urban Sprawl di Wilayah Pinggiran (Studi Kasus: Perkembangan Kota di Indonesia dan Perancis)

JURNAL PEMBANGUNAN WILAYAH & KOTA ◽

10.14710/pwk.v11i4.11596 ◽

2015 ◽

Vol 11 (4) ◽

pp. 444

Author(s):

Nurazizah Ramlan ◽

Iwan Rudiarto

Keyword(s):

Land Use ◽

Urban Sprawl ◽

Qualitative Method ◽

Swot Analysis ◽

Land Uses ◽

The People ◽

Significant Difference ◽

Type Of Land Use ◽

Major Factors ◽

Surrounding Areas

The progress in urbanization within downtown areas has been expanded to the surrounding areas (i.e. periphery). This has been considered by the changes of the land uses in two geographically different countries. These areas have experienced a phenomenon of space consumption due to the urban development, which eventually triggered the urban sprawl, such as Mlati in Indonesia, Vertou, Caquefou and Sainte Luce Sur Loire in Nantes, France. This present study aims to examine the practices in the management of space consumption by urbanization in several municipals within periphery of Nantes, such as Carquefou, Sainte Luce sur Loire, Vertou and to compare with the sub-region of Mlati, in Sleman, Indonesia. The objective of this research was to answer the question; what are the major factors that influence the implementation of the policy controlling the urban sprawl in the periphery, in Indonesia and in France? These factors were decomposed in four components: regulations, institutions, resources and implementation. The approaches used in this study were, first of all, the quantitative method and based on its results. The second approach was done by descriptive qualitative method. The first approach was analysis of changes in land uses using evolution matrices of the change of land use, in order to study how a particular type of land use evolved and how it changed. The second step was done by an interview with the people key who are mastering the research subject, and then SWOT analysis was done from the interview. The results show that there is a significant difference between Indonesia and France, particularly in the human resources and implementation.

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Assessing the effects of land use on biodiversity in the world’s drylands and Mediterranean environments

Biodiversity and Conservation ◽

10.1007/s10531-019-01888-4 ◽

2019 ◽

Vol 29 (2) ◽

pp. 393-408 ◽

Cited By ~ 2

Author(s):

Diego García-Vega ◽

Tim Newbold

Keyword(s):

Land Use ◽

Natural Habitat ◽

High Sensitivity ◽

Mediterranean Ecosystems ◽

Ecosystem Functions ◽

Land Uses ◽

Mediterranean Environments ◽

Biodiversity Changes ◽

The Impact ◽

Effects Of Land Use

Abstract Biodiversity models make an important contribution to our understanding of global biodiversity changes. The effects of different land uses vary across ecosystem types, yet most broad-scale models have failed to account for this variation. The effects of land use may be different in systems characterized by low water availability because of the unusual conditions within these systems. Drylands are expanding, currently occupying over 40% of the terrestrial land, while Mediterranean systems are highly endangered biodiversity hotspots. However, the impact of land use on biodiversity in these biomes is yet to be assessed. Using a database of local biodiversity surveys, we assess the effects of land use on biodiversity in the world’s drylands and Mediterranean ecosystems. We compare the average species richness, total abundance, species diversity, ecological dominance, endemism rates, and compositional turnover across different land uses. In drylands, there was a strong turnover in species composition in disturbed land uses compared with undisturbed natural habitat (primary vegetation), but other measures of biodiversity did not respond significantly. However, it is important to note that the sample size for drylands was very low, a gap which should be filled promptly. Mediterranean environments showed a very high sensitivity of biodiversity to land uses. In this biome, even habitat recovering after past disturbance (secondary vegetation) had substantially reduced biodiversity and altered community composition compared with primary vegetation. In an effort to maintain original biodiversity and the ecosystem functions it supports within Mediterranean biomes, conservation measures should therefore prioritize the preservation of remaining primary vegetation.

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Karakteristik indeks vegetasi pada berbagai penggunaan lahan di hulu sub DAS Cikapundung melalui interpretasi citra satelit Landsat 8

Kultivasi ◽

10.24198/kultivasi.v19i3.28625 ◽

2020 ◽

Vol 19 (3) ◽

Author(s):

Muhammad Amir Solihin ◽

Noviani Putri ◽

Ade Setiawan ◽

Daud Siliwangi ◽

Machfud Arifin

Keyword(s):

Land Use ◽

Vegetation Index ◽

Landsat 8 ◽

Land Use Management ◽

Land Uses ◽

Vegetation Types ◽

Vegetation Density ◽

Type Of Land Use ◽

Study Sites

SariPerubahan penggunaan lahan di hulu Sub DAS dapat berdampak pada kondisi DAS secara keseluruhan. Pemantauan kondisi eksisting perubahan penggunaan lahan diperlukan. Salah satu cara untuk memantau kondisi penggunaan lahan yaitu melalui monitoring indeks vegetasinya. Penelitian ini bertujuan untuk melihat karakteristik indeks vegetasi pada penggunaan lahan di sebagian Hulu Sub DAS Cikapundung. Lokasi studi terletak di Desa Cikole, Cikidang, Cibodas, Wangunharja, dan Suntenjaya di Kecamatan Lembang. Penelitian ini dilakukan melalui interpretasi citra satelit landsat 8. Metode analisis yang digunakan berupa transformasi indeks vegetasi menggunakan NDVI untuk merepresentasikan tingkat kehijauan dan kerapatan vegetasi pada lokasi studi. Hasil analisis menunjukkan karakteristik NDVI yang berbeda pada setiap jenis penggunaan lahan. Nilai NDVI pada lokasi studi berkisar antara (-0,228426) – 0,461794. Tingkat kehijauan vegetasi di lokasi studi dominan pada tingkat kehijauan rendah dan kerapatan vegetasi dominan pada kerapatan jarang. Keragaman karakteristik penggunaan lahan di lokasi studi dipengaruhi oleh adanya variasi jenis vegetasi, sebaran vegetasi, dan jenis material objek. Perlu pengelolaan penggunaan lahan yang tepat untuk meningkatkan peran ekologis kawasan sekaligus mengurangi erosi dan aliran permukaan di hulu sub DAS Cikapundung.Kata Kunci: Cikapundung, DAS, indeks vegetasi, landsat 8, penggunaan lahan AbstractLand use changes in the upper watershed have an impact on the overall condition of the watershed. Monitoring existing conditions of land use change is needed. One way to monitor the land use condition is through monitoring the vegetation index. This study aimed to identify characteristics of vegetation index on various land uses in the upstream of the Cikapundung watershed. The study sites were located in Cikole, Cikidang, Cibodas, Wangunharja, and Suntenjaya of Lembang District. The resereach was done using Landsat 8 satellite imagery interpretation The analytical methods were used the transformation of vegetation index using NDVI to represent the level of greenness and density of vegetation at the study site. The results of the analysis shown that characteristics of the vegetation index were different for each type of land use. NDVI values had ranged from (-0,228426) - 0,461794. The greenness vegetation level was dominant at low greenness, while dominant vegetation density was spare. The diversity of land use characteristics were influenced by variations in vegetation types, vegetation distribution, and material types of objects. Appropriate land use management is needed to enhance the ecological role of the area as well as reducing erosion and surface runoff in the Cikapundung sub-watershed.Keywords : cikapundung, land use, landsat 8, vegetation index, watershed

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SIGNIFICANCE OF ECOSYSTEM FUNCTIONS OF SPECIAL GREENING TERRITORIES

STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS. In the frame of the XXIII Agribusiness Forum of the South of Russia and the Exhibition «Interagromash» Volume 1 ◽

10.23947/interagro.2020.1.621-625 ◽

2020 ◽

Author(s):

N.N. Krupina ◽

Keyword(s):

Land Use ◽

Environmental Protection ◽

Ecosystem Approach ◽

Ecosystem Functions ◽

Situational Analysis ◽

Ecological Situation ◽

Barrier Potential ◽

Industrial Cities ◽

The Matrix ◽

Industrial Zones

Based on the analysis of the tense ecological situation in the industrial zones of industrial cities, the role and place of special landscaping areas in the implementation of national projects is substantiated. From the perspective of the ecosystem approach, a set of requirements and a list of priority optimization decisions regarding the planning organization of environmental protection landscaping are proposed. The matrix of situational analysis of the state and the composition of indicators for assessing the barrier potential of a territory with a special land use regime are presented.

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The main directions of scientific support for the implementation of the system of organic farming in Ukraine

Interdepartmental thematic scientific collection "Agriculture" ◽

10.31073/zem.90.22-24 ◽

2016 ◽

Vol 1 (90) ◽

pp. 22-24

Author(s):

V.F. Kaminskyi ◽

S.G. Korsun

Keyword(s):

Land Use ◽

Organic Farming ◽

Crop Production ◽

Land Ownership ◽

Scientific Support ◽

Speed Up ◽

Organic Crop Production ◽

Advanced Production ◽

And Training ◽

Organizational Issue

The aim of this work was to study the basic directions of scientific support introduction of organic farming in Ukraine. The study used methods of comparison, synthesis, analysis, induction and deduction. The article indicated on the main areas that need special attention from researchers and suggests one possible mechanism to remove the remaining obstacles to organizational issue introduction of scientific developments in the production of organic and training areas. This can speed up the creation of new and manage existing land ownership and land use organic farming with the introduction of advanced production technology of organic crop production.

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MANAJEMEN DATA SPASIAL: PENGGUNAAN TANAH WILAYAH PEDESAAN DI SUMATERA BARAT

Jurnal Spasial ◽

10.22202/js.v5i2.3090 ◽

2019 ◽

Vol 5 (2) ◽

pp. 48-53

Author(s):

Afrital Rezki, S.Pd., M.Si ◽

Erna Juita ◽

Dasrizal Dasrizal ◽

Arie Zella Putra Ulni

Keyword(s):

Land Use ◽

Paddy Field ◽

Secondary Forest ◽

Water Bodies ◽

Primary Forest ◽

Land Uses ◽

Forest Land ◽

Land Use Patterns ◽

Crop Fields ◽

Mixed Plantations

Perkembangan penggunaan tanah bergerak horisontal secara spasial ke arah wilayah yang mudah diusahakan. Penggunaan tanah juga bergerak secara vertikal dalam rangka menaikkan mutunya. Penelitian ini bertujuan untuk menganalisis pola penggunaan lahan, bagaimana manajemen penggunaan lahan di satu wilayah berdasarkan batas Nagari. Metode yang digunakan adalah analsisis spasial dengan interpretasi citra penginderaan jauh, survey lapangan, dan analisis deskriptif. Pertumbuhan pemukiman Nagari Sungai Sariak Kecamatan VII Koto Kabupaten Padang Pariaman mengakibatkan pemanfaatan ruang menjadi tumpang tindih. Diperlukan cara-cara pengelolaan dan managemen penggunaan tanah dalam rangka pembangunan berkelanjutan yang menaikkan taraf hidup masyarakat dan tidak menimbulkan kerugian lingkungan.Terdapat 9 jenis penggunaan lahan yang ada di Nagari Sungai Sariak. Penggunaan lahan tersebut adalah Primary Forest, Secondary Forest, Paddy Field, Settlement, Mixed Plantations, Crop Fields, Water Bodies, Bushes, dan Plantations. Penggunaan lahan yang paling luas di Nagari Sungai Sariak adalah jenis penggunaan lahan Primary Forest, sebesar 48% dari total luas wilayah Nagari Sungai Sariak. Pada tahun 2011 sampai tahun 2016, penggunaan lahan paling luas terjadi pada penggunaan lahan jenis Primary Forest yang kemudian menjadi Mixed Plantations. Land use Changes moved horizontally spatially towards areas that are easily cultivated. The land use also moves vertically in order to increase its quality. This study aims to analyze land use patterns, how land use management in one area is based on Nagari boundaries. The method used is spatial analysis with interpretation of remote sensing images, field surveys, and descriptive analysis. The growth of Nagari Sungai Sariak in Kecamatan VII Koto, Kabupaten Padang Pariaman resulted in overlapping use of space. Management methods are needed and management of land use in the framework of sustainable development that raises the standard of living of the community and does not cause environmental losses. There are 9 types of land use in the Nagari Sungai Sariak. The land uses are Primary Forest, Secondary Forest, Paddy Field, Settlement, Mixed Plantations, Crop Fields, Water Bodies, Bushes, and Plantations. The most extensive land use in Nagari Sungai Sariak is the type of Primary Forest land use, amounting to 48% of the total area of the Nagari Sungai Sariak. From 2011 to 2016, the most extensive land use occurred in Primary Forest land uses which later became Mixed Plantations.

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Changes in Coastal Agricultural Land Use in Response to Climate Change: An Assessment Using Satellite Remote Sensing and Household Survey Data in Tien Hai District, Thai Binh Province, Vietnam

Land ◽

10.3390/land10060627 ◽

2021 ◽

Vol 10 (6) ◽

pp. 627

Author(s):

Duong H. Nong ◽

An T. Ngo ◽

Hoa P. T. Nguyen ◽

Thuy T. Nguyen ◽

Lan T. Nguyen ◽

...

Keyword(s):

Climate Change ◽

Land Use ◽

Agricultural Land ◽

Land Use Changes ◽

Management Strategies ◽

Household Survey ◽

Extreme Weather Events ◽

Agricultural Land Use ◽

Landsat 8 ◽

Land Uses

We analyzed the agricultural land-use changes in the coastal areas of Tien Hai district, Thai Binh province, in 2005, 2010, 2015, and 2020, using Landsat 5 and Landsat 8 data. We used the object-oriented classification method with the maximum likelihood algorithm to classify six types of land uses. The series of land-use maps we produced had an overall accuracy of more than 80%. We then conducted a spatial analysis of the 5-year land-use change using ArcGIS software. In addition, we surveyed 150 farm households using a structured questionnaire regarding the impacts of climate change on agricultural productivity and land uses, as well as farmers’ adaptation and responses. The results showed that from 2005 to 2020, cropland decreased, while aquaculture land and forest land increased. We observed that the most remarkable decreases were in the area of rice (485.58 ha), the area of perennial crops (109.7 ha), and the area of non-agricultural land (747.35 ha). The area of land used for aquaculture and forest increased by 566.88 ha and 772.60 ha, respectively. We found that the manifestations of climate change, such as extreme weather events, saltwater intrusion, drought, and floods, have had a profound impact on agricultural production and land uses in the district, especially for annual crops and aquaculture. The results provide useful information for state authorities to design land-management strategies and solutions that are economic and effective in adapting to climate change.

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A research framework for projecting ecosystem change in highly diverse tropical mountain ecosystems

Oecologia ◽

10.1007/s00442-021-04852-8 ◽

2021 ◽

Author(s):

Jörg Bendix ◽

Nicolay Aguire ◽

Erwin Beck ◽

Achim Bräuning ◽

Roland Brandl ◽

...

Keyword(s):

Land Use ◽

Functional Traits ◽

Biomass Production ◽

Environmental Changes ◽

Ecosystem Functions ◽

Ecosystem Change ◽

Mountain Ecosystems ◽

Abiotic Conditions ◽

Research Framework ◽

Tropical Mountain

AbstractTropical mountain ecosystems are threatened by climate and land-use changes. Their diversity and complexity make projections how they respond to environmental changes challenging. A suitable way are trait-based approaches, by distinguishing between response traits that determine the resistance of species to environmental changes and effect traits that are relevant for species' interactions, biotic processes, and ecosystem functions. The combination of those approaches with land surface models (LSM) linking the functional community composition to ecosystem functions provides new ways to project the response of ecosystems to environmental changes. With the interdisciplinary project RESPECT, we propose a research framework that uses a trait-based response-effect-framework (REF) to quantify relationships between abiotic conditions, the diversity of functional traits in communities, and associated biotic processes, informing a biodiversity-LSM. We apply the framework to a megadiverse tropical mountain forest. We use a plot design along an elevation and a land-use gradient to collect data on abiotic drivers, functional traits, and biotic processes. We integrate these data to build the biodiversity-LSM and illustrate how to test the model. REF results show that aboveground biomass production is not directly related to changing climatic conditions, but indirectly through associated changes in functional traits. Herbivory is directly related to changing abiotic conditions. The biodiversity-LSM informed by local functional trait and soil data improved the simulation of biomass production substantially. We conclude that local data, also derived from previous projects (platform Ecuador), are key elements of the research framework. We specify essential datasets to apply this framework to other mountain ecosystems.

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Analyzing the Patterns, Trends and Dynamics of the Land-Use Changes in Azores Region: From 1990 to 2018

Sustainability ◽

10.3390/su13105433 ◽

2021 ◽

Vol 13 (10) ◽

pp. 5433

Author(s):

Rui Alexandre Castanho ◽

José Manuel Naranjo Gómez ◽

Gualter Couto ◽

Pedro Pimentel ◽

Áurea Sousa ◽

...

Keyword(s):

Land Use ◽

Development Strategy ◽

Land Use Changes ◽

Regional Government ◽

Land Uses ◽

Comprehensive Planning ◽

Sustainability Planning ◽

The Enlightenment ◽

Planning Strategies ◽

Agricultural Areas

The remarkable richness and singularity of the Azorean Region (located 38° North) and its landscapes require a sharp, well-defined, and comprehensive planning policy. Bearing in mind the significance of this issue in the enlightenment of sustainability, planning strategies should be based and supported by different studies and thematic domains to understand the problem thoroughly. Using GIS (Geographic Information Systems), the present article enables us to identify the dynamics and patterns of the evolution of the Land-Use Changes in the Azores Region from 1990 to 2018. In aggregate, the Azores islands showed growth in artificial surfaces and forest and seminatural land-uses by essentially decreasing agricultural areas—most resulting from the economic and social development strategy pursued by several Azorean governments. Moreover, this study permits us to reinforce that the Azores Archipelago’s land-uses has undergone multiple changes—marked by increasing and decreasing periods. In fact, some of these reducing dynamics are disturbing. They require closer monitorization by regional government actors to give protection, preservation, and conservation to these incomparable ultra-peripheral landscapes, environments, ecosystems, and the region as a whole.

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Soil gross nitrogen transformations in forestland and cropland of Regosols

Scientific Reports ◽

10.1038/s41598-020-80395-x ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Xiao Ren ◽

Jinbo Zhang ◽

Hamidou Bah ◽

Christoph Müller ◽

Zucong Cai ◽

...

Keyword(s):

Land Use ◽

Southwest China ◽

Nitrification Rate ◽

Land Uses ◽

Nitrogen Transformations ◽

N Losses ◽

Retention Capacity ◽

N Transformations ◽

Autotrophic Nitrification ◽

Land Use Types

AbstractSoil gross nitrogen (N) transformations could be influenced by land use change, however, the differences in inherent N transformations between different land use soils are still not well understood under subtropical conditions. In this study, an 15N tracing experiment was applied to determine the influence of land uses on gross N transformations in Regosols, widely distributed soils in Southwest China. Soil samples were taken from the dominant land use types of forestland and cropland. In the cropland soils, the gross autotrophic nitrification rates (mean 14.54 ± 1.66 mg N kg−1 day−1) were significantly higher, while the gross NH4+ immobilization rates (mean 0.34 ± 0.10 mg N kg−1 day−1) were significantly lower than those in the forestland soils (mean 1.99 ± 0.56 and 6.67 ± 0.74 mg N kg−1 day−1, respectively). The gross NO3− immobilization and dissimilatory NO3− reduction to NH4+ (DNRA) rates were not significantly different between the forestland and cropland soils. In comparison to the forestland soils (mean 0.51 ± 0.24), the cropland soils had significantly lower NO3− retention capacities (mean 0.01 ± 0.01), indicating that the potential N losses in the cropland soils were higher. The correlation analysis demonstrated that soil gross autotrophic nitrification rate was negatively and gross NH4+ immobilization rate was positively related to the SOC content and C/N ratio. Therefore, effective measures should be taken to increase soil SOC content and C/N ratio to enhance soil N immobilization ability and NO3− retention capacity and thus reduce NO3− losses from the Regosols.

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