scholarly journals Diversity and Seasonal Dynamics of Arthropods in Okomu Forest Reserve

2021 ◽  
pp. 23-36
Author(s):  
Adeduntan S. A. ◽  
Akinbi O. J. ◽  
Osabiya O. S. ◽  
Olusola J. A.
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
Seasonal Dynamics ◽  
National Park ◽  
Species Abundance ◽  
Insect Species ◽  
Rubber Plantation ◽  
Forest Reserve ◽  
Land Use Systems ◽  
Oil Palm Plantation

A field survey was conducted in Okomu Forest Reserve Edo State, to assess the diversity and seasonal dynamics of arthropod species in selected land use systems (Okomu national park, Okomu rubber plantation and Okomu oil palm plantation). Samplings of arthropods were carried out between February and September 2020, arthropods were collected by hand picking and sweep net in each sampled plots at 25 m x 25 m in the study area. Insects encountered were killed and preserved by chloroform. Arthropods samples were taken to the laboratory for oven dry and identification. A total of 382 arthropods spread across 15 orders, 34 families and 81 species were recorded. The most dominant orders were Hymenoptera (Ants) followed by Odonta (dragonfly) and Lepidoptera (butterfly and Moth) during dry season while highest abundance of orders were Spirostreptida (millepde) followed by Hymenoptera (Ants) and Araneae (spider) during rainy season. Okomu National Park has the highest (220) insect species abundance follow by Okomu Rubber Plantation (136) while the least was Okomu Oil Palm Plantation (72) in the study area. Study revealed that Okomu Rubber Plantation has no record of Scolopendromorphra (centipede) andHemiptera (bug) while in Okomu Oil Palm Plantation no record of Scolopendromorphra (centipede), lepidoptera (butterfly), also there were norecord of blattodea (crockroach) order of insect species in Okomu National Park. The highest species diversity and evenness was observed in Okomu National Park (H’ = 3.03 and E’= 0.83) follow by Okomu Oil Palm Plantation (H’=1.89 and E’=0.86) while Okomu Rubber Plantation was the least (H’ = 1.53 and E’= 0.60). ANOVA showed significant (P≤0.05) different on diversity and abundance between land use systems while there is nosignificant (P≥0.05) different seasons in the study area. Observation was made on seasonal variation of arthropods species in different land use systems and dominant species as bio-indicators in the study area.

scholarly journals Influence of Land Use on Soil Physiochemical Properties in Semi-Humid Nsukka Area of Southeastern Nigeria

2021 ◽  
pp. 6-17
Author(s):  
Umeobi, E.C. ◽  
Ezeaku P. I. ◽  
Umeugokwe C. P. ◽  
Ezeaku V.I.
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
Arable Land ◽  
Mean Value ◽  
Rubber Plantation ◽  
Land Uses ◽  
Surface Sampling ◽  
Southeastern Nigeria ◽  
Oil Palm Plantation ◽  
Surface Samples

The influence of four land uses (cultivated arable land, grassland, oil palm plantation and rubber plantation) on physical and chemical properties of coarsetextured acid soils was assessed in the semi-humid Nsukka area. Soil auger and core samples were used to achieve surface sampling at the depth intervals of 0-20 and 20-40cm in each land use type. Four diagnostic horizons were identified and sampled in each profile pit dug in each land use, which gave six samples per land use. Results showed that sand (90%) and silt (12%) fraction mean werehighest in oil palm plantation and rubber plantation respectively. The highest clay mean values were obtained from the surface samples (13%) of grassland land and the profile (24%) of rubber plantation. The oil palm plantation silt/clay (0.50) was less than unity and recorded the highest bulk density mean value (1.55 g/cm3 ). The highest value of saturated hydraulic conductivity (113.4 cm/hr) and available water capacity (53%) was recorded in the rubber plantation. The pH of the cultivated (5.7-6.8) and rubber plantation (6.2-6.3) soil increased with depth in contrast to grassland and oil palm plantation. The soil organic carbon and total nitrogen generally decreased with depth across the four land uses. The highest cation exchange capacity mean value was obtained from the surface samples of grassland (19 cmol/kg) and the profile of rubber plantation (16 cmol/kg). This shows that assessment of soil properties under different agronomic land uses will guide decisions on soil degradation associated with land uses

scholarly journals Pengaruh musim terhadap kelimpahan kumbang moncong (Coleoptera: Curculionidae) pada tipe penggunaan lahan berbeda di lanskap Hutan Harapan dan Taman Nasional Bukit Duabelas, Jambi

2020 ◽  
Vol 17 (3) ◽  
pp. 113
Author(s):  
Fatimah Siddikah ◽  
Rizky Nazarreta ◽  
Damayanti Buchori
Keyword(s):  
Land Use ◽  
Species Richness ◽  
Oil Palm ◽  
Diversity Index ◽  
Rubber Plantation ◽  
Oil Palm Plantation ◽  
Land Use Types ◽  
Analysis Of Similarity ◽  
Species Richness And Abundance ◽  
Almost All

<p>Land-use change from forest to plantation can cause the loss of various types of insect diversity group, one of which is the beetle group. Curculionids or weevils is one of the largest families in the Order Coleoptera due to its adaptability in almost all habitats in nature. This research is aimed to study the effect of seasonality on species richness and the abundance of weevils in oil palm and rubber plantation in Hutan Harapan and Bukit Duabelas National Park, Jambi. Sample was collected in the dry season and rainy season 2013–2014 by fogging method using pyrethroid knockdown insecticides. In each land use, 4 observation plots were erected with selected 3 points as a subplots, so there are 16 plots or 48 subplots in total. The results showed that 1.761 individuals of weevils from 9 subfamilies and 45 morphospecies. Based on analysis, seasonal difference did not affect species richness and abundance of weevils, while land-use types affect abundance of weevils. Analysis of similarity using Bray-Curtis Index showed 4% of similarity in two land-use types, and 46% of similarity between two seasons. The diversity index in oil palm plantation were lower than rubber plantation. The most dominant species that can be found in both land-use types is<em> Elaeidobius kamerunicus </em>Faust., while <em>Rhynchophorus</em> sp.01 is only found in oil palm plantation, and <em>Curculio</em> sp.04 is only found in rubber plantation.</p>

ANALISIS PENUTUPAN LAHAN DAN PERUBAHANNYA MENJADI KELAPA SAWIT DI INDONESIA (Studi Kasus di 5 Pulau Besar di Indonesia periode 1990 s.d 2010)

2013 ◽  
Vol 3 (2) ◽  
pp. 10
Author(s):  
Petrus Gunarso ◽  
Manjela Eko Hartoyo ◽  
Yuli Nugroho
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Land Cover Change ◽  
Oil Palm ◽  
Visual Analysis ◽  
Secondary Forest ◽  
Quantitative Information ◽  
Primary Forest ◽  
Rubber Plantation ◽  
Oil Palm Plantation

Indonesia is one of the largest crude palm oil (CPO) producing countries in the world and at the same time have experienced high levels of deforestation. The link between deforestation and expansion of oil palm plantation has been a source of controversy, which has been exacerbated by the lack of objective quantitative information on the nature of land use and land cover change and the expansion of oil palm plantations.  This report provides an independent analysis of land use and land cover change for a broad range of land cover classes for five main Islands in  Indonesia, namely Sumatra, Java, Kalimantan, Sulawesi, and Papua based on Landsat TM satellite images. Visual analysis and on screen digitizing methods were employed to create a nation-wide land cover classification that spans two decades (1990 to 2010). Three temporal epochs (1990 to 2000, 2000 to 2005 and 2005 to 2010) correspond to a period of time with significant changes in land cover and land uses in Indonesia. Expansion of oil palm plantation in Indonesia shows that most of the expansion exists as a follow on transition from disturbed forest (secondary forest), agricultural lands (mainly rubber plantation), and low biomass land cover types, including shrub land and grassland than formerly reported to be majority from undisturbed forest (primary forest).  

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

Evapotranspiration assessments from drone-based thermography - a method comparison in an oil palm plantation and a look ahead

2020 ◽  
Author(s):  
Alexander Röll ◽  
Florian Ellsäßer ◽  
Christian Stiegler ◽  
Tania June ◽  
Hendrayanto Hendrayanto ◽  
...  
Keyword(s):  
Land Use ◽  
Energy Balance ◽  
Eddy Covariance ◽  
Spatial Resolution ◽  
Oil Palm ◽  
Reference Method ◽  
Net Radiation ◽  
Near Surface ◽  
Oil Palm Plantation ◽  
Deming Regression

&lt;p&gt;Evapotranspiration (ET) is a key flux in hydrological cycles; it is affected by both climate and land-use change. A recent study across 42 study sites in four land-use types in lowland Sumatra (Indonesia) reported that local and regional transpiration are on the rebound due to the high water use and continuing expansion of oil palm plantations. Conventional ET assessment methods such as satellite-based thermography or the eddy covariance (EC) technique lack the high spatial resolution and spatial replicability, respectively, that are required for ET assessments in dynamic and heterogeneous, mosaic-like landscapes. For such assessments of ET, near-surface airborne thermography offers new opportunities for studies with high numbers of spatial replicates and in a fine spatial resolution. In our study, we tested drone-based thermography and the subsequent application of three energy balance models (DATTUTDUT, TSEB-PT, DTD) using the widely accepted EC technique as a reference method. The study site was a mature oil palm plantation in lowland Sumatra. For 61 flight missions, latent heat flux estimates of the DATTUTDUT model with measured net radiation agreed well with eddy covariance measurements (r&amp;#178;=0.85; MAE=47; RMSE=60) across variable weather conditions and daytimes. Confidence intervals for slope and intercept of a Deming regression suggest no difference between drone-based and eddy covariance method, thus indicating interchangeability. TSEB-PT and DTD yielded agreeable results, but all three models are highly sensitive to the configuration in which net radiation is assessed. Overall, we conclude that drone-based thermography with energy-balance modeling is a reliable method complementing available methods for ET studies. It offers promising, additional opportunities for fine grain and spatially explicit studies. Further steps in the near future will include the testing and if necessary calibrating of the method across different biomes as well as ecological applications.&lt;/p&gt;

scholarly journals Faktor Penentu Produksi pada Perkebunan Rakyat Kelapa Sawit di Kabupaten Mamuju Utara

2019 ◽  
Vol 9 (1) ◽  
pp. 58
Author(s):  
Dimas Deworo Puruhito ◽  
Jamhari Jamhari ◽  
Slamet Hartono ◽  
Irham Irham
Keyword(s):  
Land Use ◽  
Data Analysis ◽  
Oil Palm ◽  
Land Area ◽  
Function Model ◽  
Family Labor ◽  
Oil Palm Plantation ◽  
Average Production ◽  
Npk Fertilizer

There are three patterns of smallholder oil palm plantation in North Mamuju regency, ie plasma, IGA (Income Generating Activity), and mandiri (independent). Independent smallholder plantations are plantations managed by the community themselves without the involvement of others. While the partnership patterns can be divided into plasma and IGA. The partnership is a form of fostering of smallholders plantations by large private plantation in this area. This study aims to determine the amount of oil palm production on smallholder plantations and the factors that affect. The research was conducted in North Mamuju Regency, West Sulawesi Province which has the widest smallholder oil palm plantation in Sulawesi Island with various pattern. Four villages in two sub-districts were chosen purposively consideration with having three patterns of smallholder plantations. The sampling of farmers using snowball method after stratification in each pattern. Selected 35 plasma farmers, 70 IGA farmers, and 55 independent farmers. Data analysis was performed with Cobb-Doulas function model in the normalized logarithm, using Eviews 6 software. The findings are the average production of 56,840 kg, with productivity of 20,300 kg/ha. Input of land area, NPK fertilizer, age of oil palm crops, outside family labor, frequency of estate sanitation and distance of estate to river is the determinant input to production. Input land area is found as the most elastic input. However, land use for oil palm plantations should still refer to existing legislation.

scholarly journals Tipe penggunaan lahan memengaruhi keanekaragaman dan komposisi hymenopteran parasitoid di Jambi

2020 ◽  
Vol 16 (3) ◽  
pp. 151
Author(s):  
Muhammad Iqbal Tawakkal ◽  
Akhmad Rizali ◽  
Anik Larasati ◽  
Adha Sari ◽  
Purnama Hidayat ◽  
...  
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
National Park ◽  
Land Conversion ◽  
Forest Land ◽  
Parasitoid Species ◽  
Land Use Types ◽  
Type Of Land Use ◽  
Study Sites ◽  
Insect Sampling

<p>Hymenoptera is one of the four largest insect orders in the world, one of which is its role as a natural enemy (parasitoids, predators). Land conversion can affect the diversity and composition of the parasitoid Hymenoptera and its ecological role. This study aims to examine the effect of land use types on the diversity and composition of hymenopterans parasitoid in Jambi. The study was conducted on various types of land use in the Harapan Forest landscape and Bukit Duabelas National Park (TNBD), Jambi Province including forests, rubber forests, oil palm plantations, and rubber plantations. Insect sampling was conducted from March to September 2013, using fogging techniques. A total of 14,258 hymenopteran parasitoid individuals consisting of 30 families were obtained from all study sites. Encyrtidae, Braconidae, Aphelinidae, Eulophidae, Scelionidae, Ceraphronidae, and Platigasteridae families are found in high abundance. Oil palm land use types are found to have different parasitoid compositions compared to other land use types, while forest and rubber forest land use types have high species composition. The results of this study indicate that the type of land use affects the diversity and composition of hymenopteran parasitoid species.</p>

Sign in / Sign up

Export Citation Format

Share Document