Long-term assessment of oil palm expansion and landscape change in the eastern Brazilian Amazon

Abstract The objective of this work was to estimate the genetic parameters, correlations, and selection gains for the oil production of interspecific hybrids progenies between American oil palm, of ‘Manicoré’ origin, and oil palm, of ‘La Mé’ origin. Thirty-nine progenies were evaluated from the sixth to the ninth year after planting, for the productivity of fresh fruit bunches (PROD_FFB), oil content in the bunch (OCB), and palm oil productivity (PROD_OP). The genetic parameters and gains from direct (GDS) and indirect (GIS) selection were estimated for PROD_OP. High values of heritability for the CVg/CVe ratio indicated favorable conditions for the selection. With the selection of 20% of the progenies (selection in both sexes), the following estimates were obtained: 11.15% GDS for PROD_OP, 9.1% GIS for OCB, and 8.1% GIS for PROD_FFB. The PROD_OP of the progenies was of 6,175, 6,057, and 5,995 kg ha-1 per year with GDS and GIS for OCB and PROD_FFB, respectively. The restricted selection of the LM2T male genitor offspring resulted in 5.1% estimated GSD and in a mean of 5,800 kg ha-1 per year for PROD_OP. Selection gains for PROD_OP can be achieved immediately through the selection restricted to oil palm male genitors, and, in the medium and long term, through the interspecific reciprocal recurrent selection between American oil palm and oil palm populations.

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Co-digestion of Oil Palm Trunk Hydrolysate and Slaughterhouse Wastewater for Biohydrogen Production in a Fixed Bed Reactor by Immobilized Thermoanaerobacterium thermosaccharolyticum KKU19 on Expanded Clay

Frontiers in Energy Research ◽

10.3389/fenrg.2021.683989 ◽

2021 ◽

Vol 9 ◽

Author(s):

Sontaya Khamtib ◽

Sureewan Sittijunda ◽

Tsuyoshi Imai ◽

Alissara Reungsang

Keyword(s):

Oil Palm ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Hydrogen Yield ◽

Support Material ◽

Slaughterhouse Wastewater ◽

Term Operation ◽

Oil Palm Trunk ◽

Thermoanaerobacterium Thermosaccharolyticum

The goal of this study was to evaluate the use of expanded clay as a support material for Thermoanaerobacterium thermosaccharolyticum KKU19 to produce hydrogen from oil palm trunk hydrolysate (OPT) and slaughterhouse wastewater (SHW) in a fixed-bed reactor (FBR) under non-sterile conditions. The effects of hydraulic retention time (HRT) on the performance of the FBR were also investigated. The FBR was operated at an OPT hydrolysate to SHW ratio of 2.55:1 (v:v), 60°C, initial pH 6.5, and 1.2 mg (as total volatile solids/g expanded clay) of T. thermosaccharolyticum KKU19 immobilized on expanded clay. A maximum hydrogen production rate (HPR) and hydrogen yield (HY) of 7.15 ± 0.22 L/L day and 234.45 ± 5.14 mL H2/g-COD, respectively, were obtained at an HRT of 6 h. Long-term operation of FBR at 6 h HRT indicated that expanded clay efficiently immobilizes T. thermosaccharolyticum KKU19, for which an HPR of 6.82 ± 0.56 L H2/L day, and an HY of 231.99 ± 19.59 mL H2/g-COD were obtained. Furthermore, the COD removal efficiency of 30% obtained under long-term operation was comparable to that under short-term operation at an HRT of 6 days. Butyric and acetic acids were the main soluble metabolite products, thereby indicating a butyrate–acetate type fermentation. Our findings indicate that expanded clay is an effective support material that contributes to the protection of microbial cells and can be used for long-term operation.

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Effects of long-term mixed land use of human settlement and oil palm plantation on the groundwater quality of ex-promontory land

IOSR Journal of Environmental Science Toxicology and Food Technology ◽

10.9790/2402-08730109 ◽

2014 ◽

Vol 8 (7) ◽

pp. 01-09

Author(s):

SitiZulaikha Othman ◽

◽

Roslan Hashim ◽

Mohamad FaizalTajulBaharuddin ◽

Sharifah Mohamad

Keyword(s):

Land Use ◽

Groundwater Quality ◽

Oil Palm ◽

Human Settlement ◽

Oil Palm Plantation ◽

Mixed Land Use

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Using GIS to analyse long-term cultural landscape change in Southern Germany

Landscape and Urban Planning ◽

10.1016/j.landurbplan.2003.10.008 ◽

2005 ◽

Vol 70 (1-2) ◽

pp. 111-125 ◽

Cited By ~ 125

Author(s):

Oliver Bender ◽

Hans Juergen Boehmer ◽

Doreen Jens ◽

Kim Philip Schumacher

Keyword(s):

Landscape Change ◽

Cultural Landscape ◽

Southern Germany

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

Silicon ◽

10.1007/s12633-020-00680-2 ◽

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.

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A Long-Term Study of Rattus tiomanicus Populations in an Oil Palm Plantation in Johore, Malaysia: I. Study Methods and Population Size Without Control

Journal of Applied Ecology ◽

10.2307/2403421 ◽

1984 ◽

Vol 21 (2) ◽

pp. 445 ◽

Cited By ~ 12

Author(s):

B. J. Wood

Keyword(s):

Population Size ◽

Oil Palm ◽

Term Study ◽

Study Methods ◽

Oil Palm Plantation ◽

Long Term Study

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Landscape Change and Trade in Ancient Greece: Evidence from Pollen Data

The Economic Journal ◽

10.1093/ej/ueaa026 ◽

2020 ◽

Vol 130 (632) ◽

pp. 2596-2618

Author(s):

Adam Izdebski ◽

Tymon Słoczyński ◽

Anton Bonnier ◽

Grzegorz Koloch ◽

Katerina Kouli

Keyword(s):

Environmental History ◽

Agricultural Production ◽

Landscape Change ◽

Vegetation Change ◽

Structural Changes ◽

Ancient Greece ◽

Pollen Data ◽

Trade Expansion ◽

Southern Greece

Abstract In this article we use pollen data from six sites in southern Greece to study long-term vegetation change in this region from 1000 BCE to 600 CE. Based on insights from environmental history, we interpret our estimated trends in the regional presence of cereal, olive and vine pollen as proxies for structural changes in agricultural production. We present evidence that there was a market economy in ancient Greece and a major trade expansion several centuries before the Roman conquest. Our results are consistent with auxiliary data on settlement dynamics, shipwrecks and ancient oil and wine presses.

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