scholarly journals Japanese Honeybees (Apis Cerana Japonica Radoszkowski, 1877) May Be Resilient to Land Use Change

2021 ◽  
Author(s):  
Philip Donkersley ◽  
Lucy Covell ◽  
Takahiro Ota
Keyword(s):  
Land Use ◽  
Green Infrastructure ◽  
Landscape Change ◽  
Apis Cerana ◽  
Remote Sensing Data ◽  
Flowering Phenology ◽  
Urban Land Use ◽  
Ecological Stability ◽  
Negative Effects ◽  
Apis Cerana Japonica

Pollinators are being threatened globally by urbanisation and agricultural intensification, driven by a growing human population. Honeybees are part of a wide suite of insect pollinators with a global distribution. Understanding the impacts of landscape change and other influencing factors on pollinators is critical to ensuring food security and ecological stability. Remote sensing data on land use attributes have previously linked honeybee nutrition to land use in the Western Honeybee (Apis mellifera L.). Our study presents preliminary data comparing forage (honey and pollen) with land use across a rural-urban gradient from 22 sites in Kyushu, Southern Japan. Honey samples were collected from managed hives between June 2018 and August 2019. Pollen were collected and biotyped from hives in urban and rural locations (n = 5). Previous studies of western honeybee honey shows substantial variation in monosaccharide content. Our analysis of A. cerana japonica honey found very little variation in glucose and fructose (which accounted for 97% of monosaccharides), despite substantial differences in surrounding forage composition. As expected, we observed temporal variation in pollen foraged by A. cerana japonica, likely dependent on flowering phenology. These results suggest that A. cerana japonica may be resilient previously observed negative effects of urban land use on pollinator nutrition. We suggest this effect could be due to differences in urban green infrastructure in Japan, or due to an adaptation by A. cerana japonica to their surroundings, meaning landscape change may not be as detrimental to A. cerana japonica as has been observed elsewhere in the world.

scholarly journals Japanese Honeybees (Apis cerana japonica Radoszkowski, 1877) May Be Resilient to Land Use Change

Insects ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 685
Author(s):  
Philip Donkersley ◽  
Lucy Covell ◽  
Takahiro Ota
Keyword(s):  
Land Use ◽  
Agricultural Intensification ◽  
Apis Cerana ◽  
Remote Sensing Data ◽  
Flowering Phenology ◽  
Urban Land Use ◽  
Urban Gradient ◽  
Native Range ◽  
Substantial Variation ◽  
Apis Cerana Japonica

Pollinators are being threatened globally by urbanisation and agricultural intensification, driven by a growing human population. Understanding these impacts on landscapes and pollinators is critical to ensuring a robust pollination system. Remote sensing data on land use attributes have previously linked honeybee nutrition to land use in the Western Honeybee (Apis mellifera L.). Here, we instead focus on the less commonly studied Apis cerana japonica—the Japanese Honeybee. Our study presents preliminary data comparing forage (honey and pollen) with land use across a rural-urban gradient from 22 sites in Kyushu, southern Japan. Honey samples were collected from hives between June 2018 and August 2019. Pollen were collected and biotyped from hives in urban and rural locations (n = 4). Previous studies of honey show substantial variation in monosaccharide content. Our analysis of A. cerana japonica honey found very little variation in glucose and fructose (which accounted for 97% of monosaccharides), despite substantial differences in surrounding forage composition. As expected, we observed temporal variation in pollen foraged by A. cerana japonica, likely dependent on flowering phenology. These preliminary results suggest that the forage and nutrition of A. cerana japonica may not be negatively affected by urban land use. This highlights the need for further comparative studies between A. cerana japonica and A. mellifera as it could suggest a resilience in pollinators foraging in their native range.

scholarly journals Japanese Honeybees (Apis Cerana Japonica Radoszkowski, 1877) May Be Resilient to Land Use Change

2021 ◽  
Author(s):  
Philip Donkersley ◽  
Lucy Covell ◽  
Takahiro Ota
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Human Population ◽  
Agricultural Intensification ◽  
Apis Cerana ◽  
Remote Sensing Data ◽  
Flowering Phenology ◽  
Urban Land Use ◽  
Urban Gradient ◽  
Apis Cerana Japonica

Pollinators are being threatened globally by urbanisation and agricultural intensification, driv-en by a growing human population. Understanding these impacts on landscapes and pollinators is critical to ensuring a robust pollination system. Remote sensing data on land use attributes have previously linked honeybee nutrition to land use in the Western Honeybee (Apis mellifera L.). Here, we instead focus on the less commonly studied Apis cerana japonica – the Japanese Honeybee. Our study presents preliminary data comparing forage (honey and pollen) with land use across a rural-urban gradient from 22 sites in Kyushu, southern Japan. Honey samples were collected from hives between June 2018 and August 2019. Pollen were collected and biotyped from hives in urban and rural locations (n = 4). Previous studies of honey show substantial vari-ation in monosaccharide content. Our analysis of A. cerana japonica honey found very little varia-tion in glucose and fructose (which accounted for 97% of monosaccharides), despite substantial differences in surrounding forage composition. As expected, we observed temporal variation in pollen foraged by A. cerana japonica, likely dependent on flowering phenology. These prelimi-nary results suggest that the forage and nutrition of A. cerana japonica may not be negatively af-fected by urban land use. This highlights the need for further comparative studies between A. cerana japonica and A. mellifera as it could suggest a resilience in pollinators foraging in their na-tive range.

scholarly journals Research on the Optimization of Regional Green Infrastructure Network

2018 ◽  
Vol 10 (12) ◽  
pp. 4649 ◽  
Author(s):  
Xuemin Shi ◽  
Mingzhou Qin
Keyword(s):  
Land Use ◽  
Green Infrastructure ◽  
Circuit Theory ◽  
Urban Land Use ◽  
Spatial Pattern Analysis ◽  
Pinch Point ◽  
Minimum Path ◽  
Infrastructure Network ◽  
Morphological Spatial Pattern Analysis

With the rapid rate of urbanization, green infrastructure land is increasingly being converted to urban construction land, and the fragmentation of regional green infrastructure (GI) networks is intensifying. The connectivity of a GI network is of paramount importance for maintaining both regional biodiversity and regional ecosystem service capacity, among others. In this paper, an innovative approach to planning a GI network is presented. The proposed approach is based on the Morphological Spatial Pattern Analysis (MSPA) method, minimum path method, and circuit theory. Using the Zhengzhou–Kaifeng metropolitan area in China as a case study, we argue that the combination of the MSPA method and circuit theory can more fully and comprehensively identify the components of a GI network and its key areas. The methodology consists of three steps: (i) Identifying the cores and bridges of the GI by the MSPA method based on land use data, followed by determining the hubs of the GI network by assessing the connectivity of the core area; (ii) establishing potential connecting corridors between hubs by the minimum path method; (iii) identifying the “pinch point” area of the potential connecting corridors based on current density by applying circuit theory. This approach not only makes identification of the “hubs” and “links” in the green infrastructure network more scientific and comprehensive, but it also further identifies “pinch point” areas of the connecting corridors that require priority protection or recovery. The research results can be used as a practical reference for urban planners when planning urban land use.

scholarly journals Urban land use effect analysis on the level of noise pollution using satellite and GIS technologies: A case study in Tehran city

2020 ◽  
Keyword(s):  
Land Use ◽  
Remote Sensing Data ◽  
Noise Pollution ◽  
Urban Land ◽  
Urban Land Use ◽  
Land Uses ◽  
Effect Analysis ◽  
Gis Technologies ◽  
The Relationship

<p>We utilized satellite and GIS technologies to address the relationship between urban land uses and Noise Pollution (NP) in one of the most crowded regions of Tehran city. Leq was determined in 170 stations of the studied area and an acoustic map was created. Moreover, using satellite remote sensing data and a land use map, the density map for nine types of the most important urban land use was provided and the relationship between different land use densities and NP was investigated. We found that the investigated region was highly polluted and the NP level was higher in the morning (76.29±5.61 dB[A]) and afternoon (76.46±4.88 dB[A]) in comparison to the noon period. Furthermore, the prepared acoustic map revealed that in the east and southwest of the studied area, the NP was highest and lowest, respectively. Also, cultural (73.48±4.7 dB[A]) and parking (79.02±4.3 dB[A]) areas had the lowest and highest levels of Leq. Also, the high density of road, commercial, industrial, mixed commercial and residential and parking land uses had a direct significant relationship with Leq and this relation was inverse for green space. It was concluded that land use variations significantly affect the NP levels and it can be utilized to predict and manage the NP in different cities.</p>

Sustainability and Green Socio-ecosystem Resilience

2022 ◽  
Vol 13 (1) ◽  
pp. 0-0
Keyword(s):  
Economic Growth ◽  
Land Use ◽  
Value Creation ◽  
Land Use Planning ◽  
Environmental Sustainability ◽  
Green Infrastructure ◽  
Urban Land ◽  
Urban Land Use ◽  
Planning System ◽  
The Social

Humanity is facing a series of critical challenges, global warming being one the most important. Consequently, sustainability and resilience have become key elements in better response to the crisis and maintaining an equilibrium between ecology, economics, and various social domains. The design and use of urban land should consider including a multi-functional green infrastructure to obtain different benefits, from ecosystem services to value creation. Additionally, the urban land-use planning system contributes to economic growth, social development and environmental sustainability, while biodiversity can provide renewal and reorganization capacities for changes in the social-ecosystems. All these elements bring forth a different paradigm for the future decisions of communities. Paper seeks to synthesize Keywords: Resilience, sustainability, urban land use.

Urban land use mapping and zoning of Bombay Metropolitan Region using remote sensing data

1989 ◽  
Vol 17 (3) ◽  
pp. 11-22 ◽  
Author(s):  
S. K. Pathan ◽  
P. Jothimahi ◽  
D. Sampat Kumar ◽  
S. P. Pendharkar
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Remote Sensing Data ◽  
Urban Land ◽  
Urban Land Use ◽  
Metropolitan Region ◽  
Sensing Data
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