scholarly journals Species loss from land use of oil palm plantations in Thailand

2021 ◽  
Vol 133 ◽  
pp. 108444
Author(s):  
Ukrit Jaroenkietkajorn ◽  
Shabbir H. Gheewala ◽  
Laura Scherer
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
Species Loss

scholarly journals Frequência, diversidade e composição da fauna de cupins (Blattodea: Isoptera) em diferentes sistemas de uso do solo no sudoeste do Amazonas, Brasil

2018 ◽  
Vol 11 (2) ◽  
pp. 78-84 ◽  
Author(s):  
Agno Nonato Serrão Acioli
Keyword(s):  
Land Use ◽  
Species Richness ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Taxonomic Composition ◽  
Primary Forest ◽  
Agricultural Crops ◽  
Termite Species ◽  
Land Use Systems ◽  
Elaeis Guineensis Jacq

Resumo. Os cupins são importantes decompositores da matéria de origem vegetal. Este estudo teve como objetivo analisar e comparar a diversidade e composição das espécies de cupins em três diferentes sistemas de uso do solo na região do Alto Solimões, Amazonas, Brasil. Os cupins foram coletados na floresta primária, em cultivos de dendê (Elaeis guineensis Jacq.) e mandioca (Manihot sculenta Crantz). Em cada área selecionada as coletas foram realizadas dentro de um transecto retangular medindo 100 m x 2 m, subdivididos em 20 parcelas de 5 m x 2 m. Foram encontradas 24 espécies de cupins, pertencentes a 14 gêneros e duas famílias, nos três sistemas de uso do solo. As espécies mais frequentes foram Nasutitermes cf. dendrophilus (Desneux) (28,43%), seguida de Heterotermes tenuis (Hagen) (14,37%) e Anoplotermes sp. 2 (9,58%). A riqueza de espécies foi maior na floresta primária (16 espécies), seguida dos cultivos de dendê (14 espécies) e mandioca (seis espécies). A composição taxonômica e os grupos funcionais também sofreram modificações, sendo mais diversificados e equilibrados na floresta primária quando comparados com os dois tipos de cultivos. A comunidade de cupins é fortemente afetada quando ocorre a substituição da floresta primária pelos cultivos agrícolas. Neste estudo, as espécies N. cf. dendrophilus e H. tenuis merecem atenção, pois se constata o aumento de sua frequência nos cultivos de dendê e mandioca.Frequency, Diversity and Composition of Termite Fauna (Blattodea: Isoptera) in Land Use Systems in the Southwest of Amazonas, Brazil Abstract. Termites are important decomposers of matter of vegetable origin. This study aims to analyze and compare the diversity and composition of termite species in three different land use systems in Alto Solimões, Amazonas, Brazil. Termites were collected in the primary forest, oil palm (Elaeis guineensis Jacq.) and cassava (Manihot sculenta Crantz) crops. In each area the collections were made within a rectangular transect measuring 100 m x 2 m, subdivided into 20 plots of 5 m x 2 m. Twenty four species of termites were found, belonging to 14 genera and two families. The most frequent species were Nasutitermes cf. dendrophilus (Desneux) (28.43%), Heterotermes tenuis (Hagen) (14.37%) and Anoplotermes sp. 2 (9.58%). The species richness was higher in the primary forest (16 species), followed by oil palm (14 species) and cassava (six species) crops. The taxonomic composition and the functional groups were also modified, being more diversified and balanced in the primary forest than in the crops. The termite community was strongly affected when the primary forest was replaced by agricultural crops. The species N. cf. dendrophilus and H. tenuis deserve attention, it was verified the increase of their frequency in the crops.

scholarly journals Assessment of fertility status of soils under land use types in Egbema Area, Imo State, Nigeria

2020 ◽  
Vol 17 (2) ◽  
pp. 1-13
Author(s):  
C. Chikere-Njoku
Keyword(s):  
Land Use ◽  
Bulk Density ◽  
Soil Ph ◽  
Oil Palm ◽  
Fallow Land ◽  
Cultivated Land ◽  
Fertility Status ◽  
Oil Palm Plantation ◽  
Land Use Types ◽  
Land Use System

The study was conducted to investigate fertility status under four different land use types (oil palm plantation, pineapple orchard, cassava cultivated land and fallow land use system) in Umuekem, Ohaji/Egbema of Imo State, Nigeria. Composite samples were collected from various depths (10-15cm, 15-30cm, 30-45cm) across these land use patterns and analyzed in the laboratory using the standard procedure. Data generated were subjected to statistical analysis. Results obtained showed significant differences (p ≥ 0.05) in silt-clay ratio, bulk density, total porosity, water holding capacity, soil pH, organic carbon, available phosphorus, TN and ECEC across the four land use types studied. The soils were predominantly loamy sand surface and sandy clay loam in the subsoil exception of pineapple orchard with sandy loam topsoil over sandy clay loam subsoil. The silt clay ratio (SCR) showed ranges of 0.10-0.30, 0.10-0.36, 0.07 – 0.30, and 0.06- 0.20 in land use types of oil palm plantation, pineapple orchard, cassava cultivated land and fallow land respectively. The bulk density ranged of (1.61 – 1.77 g/cm3) for oil palm, (1.34 – 1.58 g/cm3) for pineapple (1.42 – 1.49 g/cm3) cassava and (1.45 – 1.48 g/cm3) in forest land use system. The soils of the four land use types were generally acidic. The mean values of soil pH (H20) were oil palm plantation (5.11), pineapple orchard (5.03), cassava cultivated land (5.35) and fallow land (5.40). The soil pH recorded low variation in all the land use types. The organic carbon and total nitrogen recorded high variation (>52.57% < 85.67%, >79.19 < 95.77) in all the different land use types. Calcium-magnesium ratio (Ca: Mg) recorded high variation (37.36%) in forest land use system, low variation (18.77%) in pineapple orchard and moderate in cassava (27.51%) and oil palm plantation (28.23). The low Ca: Mg ratio inhibits uptake and causes Ca deficiency thereby resulting in low fertility status of the soil. C: P recorded high variation (≥ 53.77% ≤ 77.73%) in all the studied land use types. O.C correlated positively and highly significant with available phosphorus, ECEC and T.N. The findings also indicated that bulk density correlated positively with ECEC and percentage base saturation. It is recommended that land use approach should be adopted for effective and sustainable management of the soil fertility. Keywords: Fertility status, Soils, Land use types

Land-Use Change and CO2 Emissions Associated with Oil Palm Expansion in Indonesia by 2020

2017 ◽  
pp. 49-59 ◽  
Author(s):  
Liselotte Schebek ◽  
Jan T. Mizgajski ◽  
Rüdiger Schaldach ◽  
Florian Wimmer
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Co2 Emissions ◽  
Oil Palm

scholarly journals Land-use change and livelihoods of non-farm households: The role of income from employment in oil palm and rubber in rural Indonesia

2018 ◽  
Vol 76 ◽  
pp. 828-838 ◽  
Author(s):  
Jonida Bou Dib ◽  
Vijesh V. Krishna ◽  
Zulkifli Alamsyah ◽  
Matin Qaim
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Oil Palm ◽  
Farm Households

scholarly journals Transformation of Lowland Rainforest into Oil-palm Plantations and use of Fire alter Topsoil and Litter Silicon Pools and Fluxes

Silicon ◽  
2020 ◽  
Author(s):  
Barbara von der Lühe ◽  
Laura Pauli ◽  
Britta Greenshields ◽  
Harold J. Hughes ◽  
Aiyen Tjoa ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Oil Palm ◽  
Fire Event ◽  
Oil Palm Frond ◽  
Lowland Rainforest ◽  
The Impact ◽  
Effects Of Land Use ◽  
Palm Frond

Abstract The effects of land use and fire on ecosystem silicon (Si) cycling has been largely disregarded so far. We investigated the impacts of land use and fire on Si release from topsoils and litter of lowland rainforest and oil-palm plantations in Jambi Province, Indonesia. Lower concentrations of Si in amorphous silica (ASi) were found in oil-palm plantation topsoils (2.8 ± 0.7 mg g− 1) compared to rainforest (3.5 ± 0.8 mg g− 1). Higher total Si concentrations were detected in litter from oil-palm frond piles (22.8 ± 4.6 mg g− 1) compared to rainforest litter (12.7 ± 2.2 mg g− 1). To test the impact of fire, materials were burned at 300 °C and 500 °C and were shaken with untreated samples in simulated rainwater for 28 h. Untreated oil-palm topsoils showed a significantly lower Si release (p≤ 0.05) compared to rainforest. The fire treatments resulted in an increased Si release into simulated rainwater. Si release from oil-palm topsoils and litter increased by a factor of 6 and 9 (500 °C), respectively, and Si release from rainforest topsoils and litter by a factor of 3 and 9 (500 °C). Differences between land use were related to initial ASi and litter Si concentrations, and to losses of soil organic matter during burning. We conclude that transformation of rainforest into oil palm plantations could be an important and immediate Si source after a fire event but may indirectly lead to a decrease in the long-term Si availability to plants.

scholarly journals Local Perspectives on Ecosystem Service Trade-Offs in a Forest Frontier Landscape in Myanmar

Land ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 45 ◽  
Author(s):  
Melanie Feurer ◽  
Andreas Heinimann ◽  
Flurina Schneider ◽  
Christine Jurt ◽  
Win Myint ◽  
...  
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
Land Use Changes ◽  
Forest Products ◽  
Well Being ◽  
Rubber Plantations ◽  
Trade Offs ◽  
Land User ◽  
The Impact ◽  
Local Perspectives

Extensive land use changes in forest frontier landscapes are leading to trade-offs in the supply of ecosystem services (ES) with, in many cases, as yet unknown effects on human well-being. In the Tanintharyi Region of Myanmar, a forest frontier landscape facing oil palm and rubber expansion, little is known about local perspectives on ES and the direct impact of trade-offs from land use change. This study assessed the trade-offs experienced with respect to 10 locally important ES from land user perspectives using social valuation techniques. The results show that while intact forests provide the most highly valued ES bundle, the conversion to rubber plantations entails fewer negative trade-offs than that to oil palm. Rubber plantations offer income, fuelwood, a good microclimate, and even new cultural identities. By contrast, oil palm concessions have caused environmental pollution, and, most decisively, have restricted local people’s access to the respective lands. The ES water flow regulation is seen as the most critical if more forest is converted; other ES, such as non-timber forest products, can be more easily substituted. We conclude that, from local perspectives, the impact of ES trade-offs highly depends on access to land and opportunities to adapt to change.

scholarly journals Paddy fields located in water storage zones could take over the wetland plant community

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Takeshi Osawa ◽  
Takaaki Nishida ◽  
Takashi Oka
Keyword(s):  
Land Use ◽  
Plant Community ◽  
Community Assembly ◽  
Human Activities ◽  
Species Turnover ◽  
Paddy Fields ◽  
Species Loss ◽  
Habitat Conditions ◽  
Multi Temporal ◽  
Original Habitat

Abstract Land use change could affect not only local species richness but also community assemblies. Essentially, the possible patterns of plant community assemblies are nonrandom species loss (nestedness) and species turnover. Plant community assemblies in human-mediated land use have a combination of both nestedness and turnover. This is because of historical effects that cause nonrandom species loss due to previous and/or original habitat quality and because of direct effects of human activities that cause species turnover. We investigated the complexity of the process of plant community assemblage in a paddy field, which is a typical agricultural land use in the monsoon season in central Japan. Using multi-temporal plant monitoring records, we tested the relationship between the ratio of species nestedness/turnover through multi-temporal and both the original habitat conditions and the extent of human modification. The findings revealed that paddy fields that originated from wetland habitat had a high nestedness ratio, whereas paddy fields that were largely consolidated had a high turnover ratio. Thus, we could divide the community assembly processes in human-mediated land use based on original habitat conditions and human activities. This concept could help land managers establish conservation and/or restoration plans that take into account community assembly.

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