scholarly journals Seasonal Activity of Fruit Bats in a Monoculture Rubber and Oil Palm Plantation in the Southern Philippines

Conservation ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 258-270
Author(s):  
Krizler C. Tanalgo ◽  
Tuanjit Sritongchuay ◽  
Alice C. Hughes
Keyword(s):  
Oil Palm ◽  
Land Use Changes ◽  
The Philippines ◽  
Rubber Plantation ◽  
Seasonal Activity ◽  
Fruit Bats ◽  
Negative Effects ◽  
Important Species ◽  
Tropical Biodiversity ◽  
Fruit Bat

The increasing expansion of monoculture plantations poses a major threat to Asian tropical biodiversity. Yet, in many countries such as the Philippines, the ability of species to persist within plantations has never been explored. We studied the seasonal activity and response of fruit bats in two types of monocultural plantations (rubber and oil palm) in the Southern Philippines from 2016–17 for 12 months. Our mist-netting and monitoring data showed that both plantations can support cosmopolitan species of fruit bats (Cynopterus brachyotis, Eonycteris spelaea, Macroglossus minimus, Ptenochirus jagori, and Rousettus amplexicaudatus), yet a significant variation in the abundance and guild distribution between plantations was observed. Rubber hosted a higher bat abundance than oil palm, which may be influenced by better habitat structure of the matrix (e.g., presence of orchard and fruit plantations) and practices occurring in the rubber plantation. We find that, among seasonal climatic variables, temperature showed significant negative effects on fruit bat abundance. Our results suggest that although monoculture plantations host low diversity (i.e., richness and endemism) they still support generalists which are still ecologically important species. Furthermore, wildlife-friendly commercial plantation practices could both enhance economic growth and biodiversity conservation in the Philippines. Our data both provide the potential for long-term monitoring in the Philippines and highlight the need for more comprehensive monitoring of other bat functional groups and their ability to transverse plantations to provide a more in-depth understanding of the roles and impacts of plantations and other land-use changes.

scholarly journals Study of Forest Land Function Transfer and its Role in Labour Absorption, Economic Growth and Increase in Human Development Index in West Kalimantan

2021 ◽  
Vol 04 (12) ◽  
Author(s):  
Rolando Mangatas ◽  
Keyword(s):  
Economic Growth ◽  
Economic Development ◽  
Oil Palm ◽  
Human Life ◽  
Rubber Plantation ◽  
Average Life Span ◽  
West Kalimantan ◽  
Job Opportunities ◽  
Job Opportunity ◽  
Privately Owned

Timber forests have many functions and play an essential role in human life. This means that the existence of timber forests provides many benefits for human life. Economic development activities actively implemented throughout the province of West Kalimantan have resulted in more and more areas of timber forest and rubber plantation areas being converted into oil palm plantations. The rampant development of oil palm plantations carried out by investors and those carried out independently by each resident, in essence, provides a significant enough job opportunity for the population in each area that continues to grow. Job opportunities created through economic development offer opportunities to every working population to earn income, fulfilling various life needs is mainly directed to fulfilling family nutritional consumption. If the family's nutrition is guaranteed, then the average life span of the population can be longer. In addition to meeting his family's needs, this income can also be used to finance children's education belonging to the school-age group. If the income earned by each family is large enough, then the family should be able to live in prosperity. This means that timber forest and rubber plantation areas privately owned by the community have been converted into oil palm plantations, significantly contributing to the economic growth of districts/cities in West Kalimantan province and improving the community's welfare.

scholarly journals Parturition in Geoffroy’s Rousette Fruit Bat Rousettus amplexicaudatus Geoffroy, 1810 (Chiroptera: Pteropodidae) in the Philippines

2014 ◽  
Vol 6 (12) ◽  
pp. 6502-6514 ◽  
Author(s):  
Ambre E. Delpopolo ◽  
Richard E. Sherwin ◽  
David L. Waldien ◽  
Lindsey C. George
Keyword(s):  
The Philippines ◽  
Fruit Bat

scholarly journals Spatial Analysis of Urban Thermal Island in Northern Iran (Case Study: Rasht City)

2022 ◽  
Author(s):  
Ali Mohammadpourzeid ◽  
Bohloul Alijani ◽  
Mehry Akbary ◽  
Parviz Zeaieanfirouzabadi
Keyword(s):  
Land Surface ◽  
Meteorological Data ◽  
Land Use Changes ◽  
Negative Effects ◽  
Northern Iran ◽  
Spatial Trend ◽  
Two Factors ◽  
Temporal And Spatial ◽  
Landsat Satellite ◽  
The City

Abstract Land surface temperature (LST) is one of the key parameters in hydrology, meteorology, and the surface energy balance.The one-window algorithm of Kim et al. Uses Landsat satellite imagery to model the earth's surface temperature.These trends are validated using meteorological data. Two main and basic factors play a major role in the temporal and spatial trend of the thermal islands of Rasht. These two factors of climate change that have occurred in the last two decades in the region of Gilan province and the city of Rasht. The second factor that has greatly enhanced the effect of the first factor is the human factor that has greatly included other urban factors in Rasht, including urban management and proper urban planning in the province and the city of Rasht. These two factors in the temporal and spatial trend of urban thermal islands have caused thermal islands to rapidly increase the growth of the city and urban population from the urban center to the western and southwestern regions and have very negative effects on land use changes and human areas. It has caused the construction of Rasht city.

Low Mortality of Larval Lampreys from Electrofishing, Suction-pumping, Anesthesia, and Handling

2017 ◽  
Vol 8 (2) ◽  
pp. 640-647 ◽  
Author(s):  
Jeffrey C. Jolley ◽  
Christina T. Uh ◽  
Gregory S. Silver ◽  
Timothy A. Whitesel
Keyword(s):  
Pacific Northwest ◽  
Control Group ◽  
Long Term Effects ◽  
Negative Effects ◽  
Short Term ◽  
Important Species ◽  
Pacific Lamprey ◽  
The Pacific ◽  
Delayed Mortality

Abstract Native lamprey populations are declining worldwide. In the Pacific Northwest focus on conservation and management of these ecologically and culturally important species has increased. Concern has emerged regarding the effects of sampling and handling of lamprey, with little to no attention given to the larval lifestage. We monitored the survival of larval Pacific Lamprey Entosphenus tridentatus and Lampetra spp. after backpack electrofishing, deepwater electrofishing and suction-pumping, anesthesia, and handling. We performed survival trials on wild-caught lamprey (n = 15 larvae in each trial) collected from the Clackamas River drainage in Oregon, USA, coupled with control group trials from lamprey sourced from a hatchery (n = 10 larvae). Short-term (96 h) survival was >98% with only one observed mortality. Delayed mortality (1 wk) was observed for four individuals that had fungus; two of those were positive for the bacteria Aeromonas hyrdrophila. We recorded blood hematocrit as a secondary measure of stress. The baseline, nonstressed larvae hematocrit levels did not differ from those of fish that had undergone stress through electrofishing, suction-pumping, and handling without anesthesia. Electrofishing, suction-pumping, and anesthesia showed no short-term negative effects on larval lamprey although potential long-term effects remain unstudied. These techniques appear to provide efficient and relatively safe methods for collecting and surveying larval lamprey.

Responses of tropical fruit bats to monoculture and polyculture farming in oil palm smallholdings

2016 ◽  
Vol 74 ◽  
pp. 11-18 ◽  
Author(s):  
Muhamad Syafiq ◽  
Abd Rahman Nur Atiqah ◽  
Amal Ghazali ◽  
Siti Asmah ◽  
Muhammad S. Yahya ◽  
...  
Keyword(s):  
Oil Palm ◽  
Fruit Bats ◽  
Tropical Fruit

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 Greened pedestrian linkage for Yangon central business district with its open spaces

2019 ◽  
Vol 91 ◽  
pp. 05001
Author(s):  
Myo Thu Aung ◽  
Alexander Belkin
Keyword(s):  
Land Use ◽  
Urban Expansion ◽  
Land Use Changes ◽  
Central Business District ◽  
Environmental Problems ◽  
Land Utilization ◽  
Negative Effects ◽  
Land Use Pattern ◽  
Effective Part ◽  
Business District

Yangon has passed a phase of rapid constructional development. This development has resulted in the growth of Yangon over its previous administrative boundaries and in tremendous changes of land use. Changes in land use have led to a growing number of environmental problems and a lack of infrastructure. The negative effects of spontaneous land use pattern, such as insufficient land use and damage of the natural resources along with the urban environmental problems of the mega-size urban area, can hardly be overcome after arising. They have to be minimized in advance by a foresight concept of efficient framework for land utilization pattern of future urban expansion in the Yangon City. This city has higher population density due to more accessible and positive economic situations than other areas. In this paper, the greened pedestrian linkage for Yangon Central Business District (C.B.D.), in which the largest number of colonial period buildings in Southeast Asia is located, is suggested. The essential requirements for the improvement and landscaping links are indicated, and this linkage may be an effective part of the green areas for the city’s ecological framework.

The pollination ecology of durian (Durio zibethinus, Bombacaceae) in southern Thailand

2009 ◽  
Vol 25 (1) ◽  
pp. 85-92 ◽  
Author(s):  
Sara Bumrungsri ◽  
Ekapong Sripaoraya ◽  
Thanongsak Chongsiri ◽  
Kitichate Sridith ◽  
Paul A. Racey
Keyword(s):  
Floral Biology ◽  
Pollination Ecology ◽  
Fruit Bats ◽  
Pollination Experiments ◽  
Pollination Success ◽  
Durio Zibethinus ◽  
Fruit Bat ◽  
Southern Thailand ◽  
Fruit Orchards ◽  
Frequent Visitor

Abstract:The floral biology and pollination ecology of durian, Durio zibethinus, were determined in eight semi-wild trees in mixed-fruit orchards in southern Thailand during April-May 2003 and 2005. Flowers open fully at 16h00–16h30 and most androecia drop around 01h00. Anthers dehisce at 19h30–20h00 when the stigmata are already receptive. In a series of pollination experiments, fruit was set in all treatments within 10 d. The greatest pollination success occurred after hand-crossed (76.6%), open (54.4%) and emasculation pollination (53.3%). Consistently, hand-crossed (12.2%), emasculation (8.7%) and open pollination (5.1%) yielded a substantial fruit set 2 mo after the pollination experiments. Very low pollination success in facilitated autogamy suggests that most durian trees are highly self incompatible. No mature fruit was found after insect pollination and automatic autogamy. Fruit bats, especially Eonycteris spelaea, are the major pollinators of this durian although the giant honey bee (Apis dorsata) was the most frequent visitor to the flowers. Bats visited durian flowers at the rate of 26.1 (SD = 20.7) visits per inflorescence per night. Since this semi-wild durian depends on fruit bats as its pollinator, protecting fruit bat populations and their roosts is vital for the production of the durian fruit crop.

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