scholarly journals Fern species diversity across various land use types of Mt. Makiling, Luzon Island, Philippines

2019 ◽  
Vol 20 (9) ◽  
Author(s):  
Ailene Antonio Alcala ◽  
Marjorie D Delos Angeles ◽  
Inocencio, Jr. E Buot
Keyword(s):  
Land Use ◽  
Species Diversity ◽  
Buffer Zone ◽  
The Other ◽  
Land Use Types ◽  
Fern Species ◽  
Living Organisms ◽  
Herbarium Voucher ◽  
Shed Light ◽  
Conservation And Management

Abstract. Alcala AA, Delos Angeles MD, Buot Jr IE. 2019. Fern species diversity across various land use types of Mt. Makiling, Luzon Island, Philippines. Biodiversitas 20: 2437-2445. Mt. Makiling of Luzon Island, Philippines is home to many living organisms including ferns and fern allies which are one of the important understory vegetation in many forest communities and having various economic uses like food, medicine and ornamentation. This study identified fern species found in various land use types across the northeastern slope of Mt. Makiling, Los Baños, Philippines. The plot technique was employed using a 20x20 meter quadrat. Three (3) 5x2 subquadrats were randomly distributed within the established quadrat. Fern specimens were identified (sensu PPG, 2016) and measured. Samples were collected for herbarium voucher deposited in the PBDH. A total of 28 fern species with 22 genera from 14 families were found across land use types. Identified land use types were: i) Mahogany (341 m asl.); (ii) Agriculture (355 m asl.); (iii) Buffer zone (365 m asl.); (iv) Agroforest (368 m asl.); (v) Roadside (455 m asl.), and (vi) Forest (482 m asl.). The most represented fern families were found out to be Thelypteridaceae (5 spp), Dryopteridaceae (3 spp), Polypodiaceae (3 spp.), Pteridaceae (3 spp), Aspleniaceae (2 spp), Dennstaedtiaceae (2 spp), Selaginellaceae (2 spp.) and Tectariaceae (2 spp.). On the other hand the families Schizaeaceae, Lindsaeaceae, Davalliaceae, Nephrolepidaceae, and Marratiaceae are comprised of one species only. Pteris blumeana C. Agardh and Tectaria crenata Cav. were found only in buffer zone area. Dennstaedtia philippinensis Copel., Lygodium circinnatum (Burm. f.) Sw. and Microlepia sp., were found only in agroforest area; Sphaerostephanos unitus (L.) Holttum found only in agricultural; Bolbitis heteroclita (C. Presl) Ching and Microsorum membranifolium (R. Br.) Ching were found in roadside while Asplenium tenerum G. Forst. , Christella sp., Lindsaea fissa Copel. and Nephrolepis cordifolia (L.) C. Presl were found in forest area. Pneumatopteris nitidula (C. Presl) Holttum. is a dominant fern species found in agriculture and mahogany plantation area. There is a need to document fern species along with its population across land use types in order to utilize ferns as plant indicators due to their vulnerability to changes in environmental conditions. These results can shed light on the appropriate strategy for the conservation and management of ferns in Mt. Makiling.

scholarly journals Species Diversity of Laelapid Soil Mites (Acari: Laelapidae) Under Different Land Use Types in Saman and Shahrekord

2015 ◽  
Vol 4 (13) ◽  
pp. 89-99
Author(s):  
M. Amani ◽  
J. Khajehali ◽  
F. Noorbakhsh ◽  
O. Joharch ◽  
M. R. Sabzalian ◽  
...  
Keyword(s):  
Land Use ◽  
Species Diversity ◽  
Soil Mites ◽  
Land Use Types

scholarly journals Effect of land-use types on edaphic properties and plant species diversity in Mediterranean agroecosystem

2020 ◽  
Vol 27 (12) ◽  
pp. 3676-3690
Author(s):  
Vassilios Triantafyllidis ◽  
Anastasios Zotos ◽  
Chariklia Kosma ◽  
Efthimios Kokkotos
Keyword(s):  
Land Use ◽  
Species Diversity ◽  
Plant Species ◽  
Plant Species Diversity ◽  
Land Use Types ◽  
Edaphic Properties

Woody species diversity and carbon stock under different land use types at Gergera watershed in eastern Tigray, Ethiopia

2018 ◽  
Vol 93 (3) ◽  
pp. 1191-1203 ◽  
Author(s):  
Abrha Brhan Gebre ◽  
Emiru Birhane ◽  
Girmay Gebresamuel ◽  
Kiros Meles Hadgu ◽  
Lindsey Norgrove
Keyword(s):  
Land Use ◽  
Species Diversity ◽  
Carbon Stock ◽  
Woody Species ◽  
Land Use Types ◽  
Woody Species Diversity

scholarly journals Ecological Diversity of Pteridophytes Across Land Use Types in Mt. Makiling Forest Reserve, Luzon Island, Philippines

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Marjorie D. delos Angeles ◽  
Ailene A. Alcala ◽  
Inocencio E. Buot Jr.
Keyword(s):  
Land Use ◽  
Species Richness ◽  
Environmental Changes ◽  
The Philippines ◽  
Forest Conversion ◽  
Edaphic Factors ◽  
Forest Reserve ◽  
Community Patterns ◽  
Land Use Types ◽  
Fern Species

Changes are evident in fern species richness, composition, and abundance as a result of environmental changes caused by forest conversion to various land use types. This study identified fern species and described its distribution pattern with reference to ecological parameters obtained from various land use types across the northeastern slope of Mt. Makiling Forest Reserve, Los Baños, Philippines. The plot technique was employed using a 20x20 meter quadrat. Three 5x2 subquadrats were randomly distributed within the established quadrat. Cluster and ordination analysis were used and edaphic factors were analyzed. Fern specimens were identified (sensu PPG) and measured. Samples were collected for herbarium vouchers and were deposited at the Plant Biology Division Herbarium, University of the Philippines Los Baños (PBDH). Cluster analysis revealed six land use types: buffer, agroforest, agri-farm, roadside, mahogany, and forest. Twenty-nine (29) fern species belonging to 23 genera from 14 families were recorded across the different land use types. Among the land use types, the forest had the highest fern species richness (13) and the agri-farm and Mahogany had the least (6). Canonical correspondence analysis indicated that moisture, OM, pH, and CEC were significant explanatory drivers of fern distribution especially in the Mahogany and Agroforest land use type. Understanding the fern community patterns and edaphic factors in Mt. Makiling would aid in its conservation planning.

scholarly journals THE VERTICAL LAND USE ZONING FOR UNDERGROUND SPACE DEVELOPMENT IN MALAYSIA

2021 ◽  
Vol 19 ◽  
Author(s):  
Farah Zaini ◽  
Robiah Suratman ◽  
Asmma’ Che Kassim
Keyword(s):  
Land Use ◽  
Comparative Study ◽  
Optimal Strategy ◽  
Buffer Zone ◽  
Qualitative Approach ◽  
The Other ◽  
Third Party ◽  
Underground Space ◽  
Land Uses

There is a demand for the development of underground space beneath alienated land by a third party other than the surface landowner. Arguments frequently arise because the surface landowner asserts that his rights extend to ownership extension, while the other party wishes to develop the underground space without interfering with the rights of others. Due to Malaysia's absent of land use zoning for underground space, the rights to develop underground space are ambiguous. Using a qualitative approach, this study will examine the role of land use zoning in assisting the development of underground spaces. Thematic analyses revealed three interconnected elements: underground land use zoning, standardisation of land category depths, and a buffer zone for surface and underground space ownership. Additionally, a comparative study was conducted between Malaysia, Hong Kong, China, Japan, and Finland in order to determine the optimal strategy for zoning underground space land uses. At the conclusion of this paper, verticalland use zoning was also proposed.

Measurement and estimation of land-use effects on soil carbon and related properties for soil monitoring: a study on a basalt landscape of northern New South Wales, Australia

Soil Research ◽  
2010 ◽  
Vol 48 (5) ◽  
pp. 421 ◽  
Author(s):  
Brian R. Wilson ◽  
Phoebe Barnes ◽  
Terry B. Koen ◽  
Subhadip Ghosh ◽  
Dacre King
Keyword(s):  
Land Use ◽  
Soil Properties ◽  
Bulk Density ◽  
Soil Condition ◽  
The Other ◽  
Soil Monitoring ◽  
Soil Layers ◽  
Land Use Types ◽  
Equivalent Mass ◽  
Optimum Sample

There is a growing need for information relating to soil condition, its current status, and the nature and direction of change in response to management pressures. Monitoring is therefore being promoted regionally, nationally, and internationally to assess and evaluate soil condition for the purposes of reporting and prioritisation of funding for natural resource management. Several technical and methodological obstacles remain that impede the broad-scale implementation of measurement and monitoring schemes, and we present a dataset designed to (i) assess the optimum size of sample site for soil monitoring, (ii) determine optimum sample numbers required across a site to estimate soil properties to known levels of precision and confidence, and (iii) assess differences in the selected soil properties between a range of land-use types across a basalt landscape of northern NSW. Sample site size was found to be arbitrary and a sample area 25 by 25 m provided a suitable estimate of soil properties at each site. Calculated optimum sample numbers differed between soil property, depth, and land use. Soil pH had a relatively low variability across the sites studied, whereas carbon, nitrogen, and bulk density had large variability. Variability was particularly high for woodland soils and in the deeper soil layers. A sampling intensity of 10 samples across a sampling area 25 by 25 m was found to yield adequate precision and confidence in the soil data generated. Clear and significant differences were detected between land-use types for the various soil properties determined but these effects were restricted to the near-surface soil layers (0–50 and 50–100 mm). Land use has a profound impact on soil properties near to the soil surface, and woodland soils at these depths had significantly higher carbon, nitrogen, and pH and lower bulk density than the other land uses. Soil properties between the other non-woodland land-use types were largely similar, apart from a modestly higher carbon content and higher soil acidity under improved pasture. Data for soil carbon assessment should account for equivalent mass, since this significantly modified carbon densities, particularly for the lighter woodland soils. Woodland soils had larger quantities of carbon (T/ha corrected for equivalent mass) than any other land-use type, and in order to maintain the largest quantity of carbon in this landscape, retaining trees and woodland is the most effective option. Results from this work are being used to inform further development the NSW Statewide Soil Monitoring Program.

scholarly journals Impact of Different Land-Use Systems on Soil Physicochemical Properties and Macrofauna Abundance in the Humid Tropics of Cameroon

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Lawrence Tatanah Nanganoa ◽  
Justin Nambangia Okolle ◽  
Valentine Missi ◽  
Jacques Roberto Tueche ◽  
Lewis Dopgima Levai ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Physicochemical Properties ◽  
Humid Tropics ◽  
The Other ◽  
Plant Residues ◽  
Soil Physicochemical Properties ◽  
Land Use Systems ◽  
Land Use Types ◽  
The Impact

The impact of different land-use systems on some soil physicochemical properties and macrofauna abundance in the humid tropics of Cameroon was studied. The land-use types included secondary forest (SF), oil palm plantation (PP), banana plantation (BP), sugarcane plantation (SP), and rubber plantation (RP). Soil particle size distribution, bulk density (BD), pH, organic matter (OM), and number of macrofauna were evaluated. The results showed that OM and number of macrofauna were higher in the SF than in the other land-use types. Pearson’s correlation analysis carried out to determine the relationship between OM and BD showed that OM and BD was strongly negatively related with correlation coefficient of −0.9653. It also showed a strong significant negative correlation between BD and ants population (r = −0.8828) and between soil pH and number of earthworms (r = −0.9072). Based on the results, the SF produced more organic matter and higher number of macrofauna. However, the OM of the other land uses was not low; hence, it could be beneficial to return plant residues to the field for maintaining soil quality.

A Politics of Intensity: Some Aspects of Acceleration in Simondon and Deleuze

2017 ◽  
Vol 11 (4) ◽  
pp. 498-517
Author(s):  
Yuk Hui ◽  
Louis Morelle
Keyword(s):  
Conceptual Framework ◽  
The Other ◽  
Generic Concept ◽  
Philosophical Thought ◽  
Ontological Ground ◽  
Shed Light

This article aims to clarify the question of speed and intensity in the thoughts of Simondon and Deleuze, in order to shed light on the recent debates regarding accelerationism and its politics. Instead of starting with speed, we propose to look into the notion of intensity and how it serves as a new ontological ground in Simondon's and Deleuze's philosophy and politics. Simondon mobilises the concept of intensity to criticise hylomorphism and substantialism; Deleuze, taking up Simondon's conceptual framework, repurposes it for his ontology of difference, elevating intensity to the rank of generic concept of being, thus bypassing notions of negativity and individuals as base, in favour of the productive and universal character of difference. In Deleuze, the correlation between intensity and speed is fraught with ambiguities, with each term threatening to subsume the other; this rampant tension becomes explicitly antagonistic when taken up by the diverse strands of contemporary accelerationism, resulting in two extreme cases in the posthuman discourse: either a pure becoming, achieved through destruction, or through abstraction that does away with intensity altogether; or an intensity without movement or speed, that remains a pure jouissance. Both cases appear to stumble over the problem of individuation, if not disindividuation. Hence, we wish to raise the following question: in what way can one think of an accelerationist politics with intensity, or an intensive politics without the fetishisation of speed? We consider this question central to the interrogation of the limits of acceleration and posthuman discourse, thus requiring a new philosophical thought on intensity and speed.

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