Changes in the Abundance and Composition of a Microbial Community Associated with Land Use Change in a Mexican Tropical Rain Forest

2020 ◽  
Vol 20 (3) ◽  
pp. 1144-1155 ◽  
Author(s):  
Dulce Flores-Rentería ◽  
Irene Sánchez-Gallén ◽  
Diego Morales-Rojas ◽  
John Larsen ◽  
Javier Álvarez-Sánchez
Keyword(s):  
Land Use ◽  
Microbial Community ◽  
Land Use Change ◽  
Rain Forest ◽  
Tropical Rain Forest

scholarly journals PENCUCIAN BAHAN ORGANIK TANAH PADA TIGA PENGGUNAAN LAHAN DI DAERAH HUTAN HUJAN TROPIS SUPER BASAH PINANG-PINANG GUNUNG GADUT PADANG

Jurnal Solum ◽  
2011 ◽  
Vol 8 (1) ◽  
pp. 34
Author(s):  
Yulnafatmawita Yulnafatmawita ◽  
Adrinal Adrinal ◽  
Arief Fauzan Hakim
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Soil Surface ◽  
Soil Samples ◽  
Annual Rainfall ◽  
Undisturbed Soil ◽  
Physical Laboratory ◽  
West Sumatra

Study about soil organic matter (SOM) leaching in soil profiles of tropical rain forest was conducted in Bukit Pinang-Pinang, the upper footslope of Mt. Gadut in West Sumatra, and in Soil Physical laboratory Andalas University Padang.  Bukit Pinang-Pinang is located on 480-640 m asl and geographically is between 100°29’40” and 100°30’20 E”  as well as between 0°54’55” and 0°55’45”S.  This rain forest area is known as a super wet area because it receives high annual rainfall (>3500 mm).  The objective of this research was to measure the amount of SOM leached from top soil into the deeper soil.  Undisturbed soil samples were taken from three different land uses, forest, bush, and mixed garden, on the top, middle, and foot slopes.  Undisturbed soil samples were leached with distilled water as the amount of rainfall accepted in natural condition. The results showed that, land use change from forest into ecosystems of mixed garden (for over 50 years with 100% soil surface coverage and without any cultivation) and bush land (for over 20 years left) did not cause the SOM content in the profiles decreased. Amount of SOM leached from the top 0-10 cm was found greater from mixed garden, then followed by forest on the upper slope, forest on the middle slope, and bush area.Keywords: SOM leaching, land use change, tropical rain forest, bush, mixed garden

scholarly journals Soil microbial community dynamics and assembly under long-term land use change

2017 ◽  
Vol 93 (10) ◽  
Author(s):  
Dennis Goss-Souza ◽  
Lucas William Mendes ◽  
Clovis Daniel Borges ◽  
Dilmar Baretta ◽  
Siu Mui Tsai ◽  
...  
Keyword(s):  
Land Use ◽  
Microbial Community ◽  
Land Use Change ◽  
Soil Microbial Community ◽  
Community Dynamics ◽  
Soil Microbial ◽  
Microbial Community Dynamics

Land-use Change Dynamics, Soil Type and Species Forming Mono-dominant Patches: the Case ofPteridium aquilinumin a Neotropical Rain Forest Region

Biotropica ◽  
2014 ◽  
Vol 47 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Ireri Suazo-Ortuño ◽  
Leonel Lopez-Toledo ◽  
Javier Alvarado-Díaz ◽  
Miguel Martínez-Ramos
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Soil Type ◽  
Rain Forest ◽  
Change Dynamics ◽  
Forest Region ◽  
Neotropical Rain Forest

Change in Land Use Alters the Diversity and Composition of Bradyrhizobium Communities and Led to the Introduction of Rhizobium etli into the Tropical Rain Forest of Los Tuxtlas (Mexico)

2011 ◽  
Vol 63 (4) ◽  
pp. 822-834 ◽  
Author(s):  
Ernesto Ormeño-Orrillo ◽  
Marco A. Rogel-Hernández ◽  
Lourdes Lloret ◽  
Aline López-López ◽  
Julio Martínez ◽  
...  
Keyword(s):  
Land Use ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Los Tuxtlas ◽  
Rhizobium Etli

Land use change in Amazonian Dark Earth and Acrisol: Responses of organic carbon, organic matter composition and microbial carbon utilisation

2020 ◽  
Author(s):  
Klaus Jarosch ◽  
Luis Carlos Colocho Hurtarte ◽  
Konstantin Gavazov ◽  
Aleksander Westphal Muniz ◽  
Christoph Müller ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Community Structure ◽  
Microbial Community ◽  
Organic Carbon ◽  
Land Use Change ◽  
Microbial Community Structure ◽  
Secondary Forest ◽  
Soil Types ◽  
Amazonian Dark Earth

<p>The conversion of tropical forest for cassava cultivation is widely known to decrease the soil organic matter (OM) and nutrient contents of highly weathered soils in the tropics. Amazonian Dark Earth (ADE) might be affected less due to their historical anthropogenic amelioration with e.g. charcoal, ceramics and bones, leading to higher soil OM and nutrient concentrations. In this study, we analysed the effect of land use change on the OM dynamics and its composition under tropical conditions, using ADE and an adjacent Acrisol (ACR) as model systems. Soil samples were obtained south of Manaus (Brazil), from a secondary forest and an adjacently located 40-year-old cassava plantation. The land use change induced a severe decrease of organic carbon (OC) concentrations in ADE (from 35 to 15 g OC kg<sup>‑1</sup>) while OC in the adjacent ACR was less affected (18 to 16 g OC kg<sup>‑1</sup>). Soils were analysed by <sup>13</sup>C NMR spectroscopy to obtain information on how the conversion of secondary forest to cassava affected the chemical composition of OM. Our results show that land use change induces differences in the OM composition: The OM in ADE changes to a more decomposed state (increase of alkyl:O/N-alkyl ratio) whereas the OM in ACR changes to a less decomposed state (decrease of alkyl:O/N-alkyl ratio). According to a molecular mixing model, land use change influenced mostly the proportion of lipids, which might be related with a change of the plant input. The incubation of the soils with <sup>13</sup>C glucose enabled resolving how soil microorganisms were affected by land use change. In both soil types ADE and ACR, land use change caused a reduction of the total <sup>13</sup>C glucose respiration by approximately one third in a 7-days incubation, implying lower microbial activity. Microorganisms in both soil types appear to be more readily active in soils under forest, since we observed a distinct lag time between <sup>13</sup>C glucose addition and respiration under cassava planation. This indicated differences in microbial community structure, which we will assess further by determining the <sup>13</sup>C label uptake by the microbial biomass and the microbial community structure using <sup>13</sup>C PLFA analysis. Preliminary results from synchrotron-based STXM demonstrate a distinct arrangement of OM at fine-sized charcoal-particle interfaces. Samples of soils receiving <sup>13</sup>C label will be further analysed by NanoSIMS with the hypothesis that charcoal interfaces foster nutrient dynamics at the microscale. Despite the high loss of OC in the ameliorated ADE through land use change, the remaining OM might improve the nutrient availability thanks to charcoal interactions compared to the ACR. Our results contribute to a better understanding of the sensitivity of OM upon land use change and how the microbial community is responding to land use change in highly weathered tropical soils.</p>

scholarly journals Land use change in the Amazon rain forest favours generalist fungi

2016 ◽  
Vol 30 (11) ◽  
pp. 1845-1853 ◽  
Author(s):  
Rebecca C. Mueller ◽  
Jorge L. M. Rodrigues ◽  
Klaus Nüsslein ◽  
Brendan J. M. Bohannan
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Rain Forest ◽  
Amazon Rain Forest

Rice to Vegetables: Short- Versus Long-Term Impact of Land-Use Change on the Indigenous Soil Microbial Community

2011 ◽  
Vol 62 (2) ◽  
pp. 474-485 ◽  
Author(s):  
Bo Sun ◽  
Zhi-Xing Dong ◽  
Xue-Xian Zhang ◽  
Yun Li ◽  
Hui Cao ◽  
...  
Keyword(s):  
Land Use ◽  
Microbial Community ◽  
Land Use Change ◽  
Soil Microbial Community ◽  
Soil Microbial ◽  
Long Term Impact

scholarly journals FORESTRY EXPANSION DURING THE LAST DECADES IN THE PARAIBA DO SUL BASIN – BRAZIL

2016 ◽  
Vol XLI-B8 ◽  
pp. 857-861
Author(s):  
F. Carriello ◽  
F. S. Rezende ◽  
O. M. S. Neves ◽  
D. A. Rodriguez
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Rain Forest ◽  
Supervised Classification ◽  
Average Rate ◽  
Mata Atlântica ◽  
Clear Cut ◽  
Eucalyptus Plantations ◽  
Mata Atlantica ◽  
Land Cover Maps

from 1986 to 2010. In this region is situated the most important and largest extension of reminiscent of Mata Atlântica Biome reminiscent. This biome has been one the most exploited Brazilian biome since 1500, when Brazilian colonization begun. To achieve this goal, we use the GIS “SPRING” and images from Landsat 5 Satellite, TM sensor from 1986, 1990, 1995, 2000, 2005 and 2010, distributed by the Brazilian National Institute for Space Research - INPE. The non-supervised-classification was applied to images in order to produce land use and land cover maps. After that, we intersect each classification for each date with the precedent date, so we can analyze the paths of each land use change, focusing forestry expansion in native’s Mata Atlântica areas. The results show that eucalyptus plantations in the region have expanded mostly over fragments of Mata Atlântica. About 99.389 hectares of Mata Atlântica were transformed into forestry in 25 years, an average rate of 4000 ha per year. Clear-cut was largest between 1990 and 1995, when 22810 hectares of rain forest were cut, and between 1995 and 2000, when 21430 hectares were cut.

Assessing implications of land-use and land-cover change dynamics for conservation of a highly diverse tropical rain forest

2007 ◽  
Vol 138 (1-2) ◽  
pp. 131-145 ◽  
Author(s):  
Alejandro Flamenco-Sandoval ◽  
Miguel Martínez Ramos ◽  
Omar Raúl Masera
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Land Cover Change ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Change Dynamics
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