Agricultural land-use change in a Mexican oligotrophic desert depletes ecosystem stability

BackgroundGlobal demand for food has led to increased land-use change, particularly in dry land ecosystems, which has caused several environmental problems due to the soil degradation. In the Cuatro Cienegas Basin (CCB), alfalfa production irrigated by flooding impacts strongly on the soil.MethodsIn order to analyze the effect of such agricultural land-use change on soil nutrient dynamics and soil bacterial community composition, this work examined an agricultural gradient within the CCB which was comprised of a native desert grassland, a plot currently cultivated with alfalfa and a former agricultural field that had been abandoned for over 30 years. For each site, we analyzed C, N and P dynamic fractions, the activity of the enzyme phosphatase and the bacterial composition obtained using 16S rRNA clone libraries.ResultsThe results showed that the cultivated site presented a greater availability of water and dissolved organic carbon, these conditions promoted mineralization processes mediated by heterotrophic microorganisms, while the abandoned land was limited by water and dissolved organic nitrogen. The low amount of dissolved organic matter promoted nitrification, which is mediated by autotrophic microorganisms. The microbial N immobilization process and specific phosphatase activity were both favored in the native grassland. As expected, differences in bacterial taxonomical composition were observed among sites. The abandoned site exhibited similar compositions than native grassland, while the cultivated site differed.DiscussionThe results suggest that the transformation of native grassland into agricultural land induces drastic changes in soil nutrient dynamics as well as in the bacterial community. However, with the absence of agricultural practices, some of the soil characteristics analyzed slowly recovers their natural state.

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Divergent response of heavy metal bioavailability in soil rhizosphere to agricultural land use change from paddy field to various drylands

Environmental Science Processes & Impacts ◽

10.1039/d0em00501k ◽

2021 ◽

Author(s):

Yujuan Gao ◽

Jianli Jia ◽

Beidou Xi ◽

Dongyu Cui ◽

Wenbing Tan

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Land Use ◽

Land Use Change ◽

Agricultural Land ◽

Rhizosphere Soil ◽

Agricultural Land Use ◽

Metal Bioavailability ◽

Soil Rhizosphere ◽

Divergent Response

The heavy metal pollution induced by agricultural land use change has attracted great attention. In this study, the divergent response of bioavailability of heavy metals in rhizosphere soil to different...

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Agricultural land-use change and rotation system exert considerable influences on the soil antibiotic resistome in Lake Tai Basin

The Science of The Total Environment ◽

10.1016/j.scitotenv.2020.144848 ◽

2021 ◽

Vol 771 ◽

pp. 144848

Author(s):

Wei-Guo Zhang ◽

Tao Wen ◽

Li-Zhu Liu ◽

Jiang-Ye Li ◽

Yan Gao ◽

...

Keyword(s):

Land Use ◽

Land Use Change ◽

Agricultural Land ◽

Agricultural Land Use ◽

Rotation System

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800 Years of Agricultural Land-use Change in Asian (Eastern) Russia

KULUNDA: Climate Smart Agriculture - Innovations in Landscape Research ◽

10.1007/978-3-030-15927-6_6 ◽

2019 ◽

pp. 67-87 ◽

Cited By ~ 1

Author(s):

A. V. Prishchepov ◽

F. Schierhorn ◽

N. Dronin ◽

E. V. Ponkina ◽

D. Müller

Keyword(s):

Land Use ◽

Land Use Change ◽

Agricultural Land ◽

Agricultural Land Use ◽

Eastern Russia

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An open framework for agent based modelling of agricultural land use change

Environmental Modelling & Software ◽

10.1016/j.envsoft.2014.06.027 ◽

2014 ◽

Vol 61 ◽

pp. 19-38 ◽

Cited By ~ 42

Author(s):

Dave Murray-Rust ◽

Derek T. Robinson ◽

Eleonore Guillem ◽

Eleni Karali ◽

Mark Rounsevell

Keyword(s):

Land Use ◽

Land Use Change ◽

Agricultural Land ◽

Agricultural Land Use ◽

Agent Based ◽

Open Framework ◽

Agent Based Modelling

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Drivers of Agricultural Land-Use Change in Scotland

Understanding Land-Use and Land-cover Change in Global and Regional Context ◽

10.1201/9781482294477-18 ◽

2005 ◽

pp. 161-178

Keyword(s):

Land Use ◽

Land Use Change ◽

Agricultural Land ◽

Agricultural Land Use

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Effect of agricultural land-use change on ant dominance hierarchy and food preferences in a temperate oak forest

PeerJ ◽

10.7717/peerj.6255 ◽

2019 ◽

Vol 7 ◽

pp. e6255 ◽

Cited By ~ 2

Author(s):

Citlalli Castillo-Guevara ◽

Mariana Cuautle ◽

Carlos Lara ◽

Brenda Juárez-Juárez

Keyword(s):

Land Use ◽

Land Use Change ◽

Dominance Hierarchy ◽

Agricultural Land ◽

Food Preferences ◽

Cold Climate ◽

Agricultural Land Use ◽

Oak Forest ◽

Ant Communities ◽

Trade Off

Background The discovery-dominance trade-off is the inverse relationship between the ability of a species to discover resources and the species’ dominance of those resources; a paradigm used to explain species coexistence in ant communities dependent on similar resources. However, factors such as stress (e.g., temperature) or disturbance (e.g., removal of biomass) associated with the change in land use, can modify this trade-off. Here, we aimed to determine the potential effects of land use change on dominance hierarchy, food preferences and on the discovery-dominance trade-off. Methods An experiment with baits was used to investigate the dominance hierarchies of ant communities in a temperate mountain habitat in central Mexico. We evaluated the dominance index (DI), food preferences and discovery-dominance trade-offs of ants inhabiting two types of vegetation: a native oak forest and agricultural land resulting from agricultural land use and grazing. Results The ant communities in both environments were comprised of three species of ants (Monomorium minimum, Myrmica mexicana, and Camponotus picipes pilosulus), four morphospecies (Pheidole sp.1 and Pheidole sp.2, Temnothorax sp. and Lasius sp.) and one genus (Formica spp.). All Formicidae showed values of intermediate to low DI, and this factor did not seem to be influenced by the change in land use. Ants in the modified vegetation (i.e., agricultural land) were found to be numerically greater. Overall, a higher number of visits were registered to the tuna bait, although the duration of foraging events to the honey baits was longer. However, foraging times were dependent on the species considered: the generalized Myrmicinae, M. minimum, the ant species with highest DI, foraged for longer periods of time in the agricultural land and on the tuna bait. Meanwhile, the cold-climate specialist Formica spp., with a lower DI, foraged for longer periods of time in the oak (although not significant) and on the honey bait. We found little evidence of the discovery-dominance trade-off; instead, we found considerable diversity in the strategies used by the different species to access resources. This range of strategies is well represented by the generalized Myrmicinae M. minimum, the cold-climate specialists Formica spp. and Temnothorax sp., and the rare species, as the cold climate specialist Lasius sp. (insinuators). Conclusions Our evaluation shows that transformation of the original habitat does not appear to affect the hierarchical dominance of the ant communities, but it does affect their food preferences. Species with higher DI values such as the generalized Myrmicinae are more skilled at resource acquisition in modified habitats. Our results suggest that change in land use promotes an increase in the diversity of foraging strategies used by different ant species. This diversity may contribute to resource partitioning which favors coexistence.

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DAMPAK PERUBAHAN PENGGUNAAN LAHAN PERTANIAN TERHADAP SOSIAL EKONOMI PETANI SEKITAR LOKASI PERTAMBANGAN BANYU URIP KECAMATAN GAYAM KABUPATEN BOJONEGORO

Jurnal Tataloka ◽

10.14710/tataloka.20.1.50-64 ◽

2018 ◽

Vol 20 (1) ◽

pp. 50

Author(s):

Aziz Bahtiar Rifa’i ◽

Fadjar Hari Mardiansjah

Keyword(s):

Land Use ◽

Land Use Change ◽

Agricultural Land ◽

Positive Impact ◽

Arable Land ◽

Mining Area ◽

Agricultural Land Use ◽

Socioeconomic Conditions ◽

Qualitative Approaches ◽

The Impact

This study examines the impact of agricultural land use change into a petroleum mining area to farmers’ socioeconomic conditions around petroleum mining project area in Gayam District of Kabupaten Bojonegoro. The analyses used a mix method, using both quantitative and qualitative approaches. The quantitative approach is used to determine the impact of agricultural land use change on the social and economic aspects with the respondent farmers were supported with a scoring method to determine the condition of socioeconomic vulnerability of farmers, while the qualitative approach carried out through in-depth interviews to some informants who have been affected by the project. The results shows that the presence of the petroleum mining industry has not had a positive impact yet on the farmers’ socioeconomic conditions. By the 700 hectares of agricultural land conversion, the agricultural production capacity of the area tends to decrease, including by the decreasing of the productivity of some agricultural land in a radius of 500 m from the fenceof the mining area as they are affected by the fence’s spotlight. The farmers' income also tends to decrease because of the decreasing of their working hours as the big loss of agricultural land in the area. As a result, many farmers should work outside of the area to search replacement of the arable land. These situations lead to a moderate condition of social and economic vulnerability for the farmers, especially for those who still have sufficient assets to meet the needs of their economic.

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