scholarly journals Bloom evenness modulates the influence of bloom abundance on insect community structure in suburban gardens

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11132
Author(s):  
Elizabeth Y. Braatz ◽  
Zachariah J. Gezon ◽  
Kristin Rossetti ◽  
Lily T. Maynard ◽  
Jonathan S. Bremer ◽  
...  

As land use change drives global insect declines, the value of enhancing habitat in urban and suburban landscapes has become increasingly important for flower-visiting insects. In order to help identify best landscaping practices, we conducted plant surveys and insect bowl-trap surveys in 34 suburban yards for 21 months in Gainesville, FL, USA, which resulted in 274 paired days of plant and insect survey data. We assessed the impact of nearest greenspace size, distance to greenspace, yard area, plant richness, plant type, bloom abundance, bloom richness and bloom evenness on insect abundance and richness. Our samples include 34,972 insects captured, 485,827 blooms counted and 774 species of plants recorded. We found that bloom evenness had a modulating effect on bloom abundance—a more even sample of the same number of blooms would have a disproportionately greater positive impact on flower visitor richness, insect richness and insect abundance. Bloom abundance was also highly significant and positively associated with flower visitor abundance, but nearest greenspace size, distance to greenspace, plant type (native vs. non-native vs. Florida Friendly), and yard area were not found to be important factors. Plant richness was a highly significant factor, but its effect size was very small.

2018 ◽  
Vol 20 (1) ◽  
pp. 50
Author(s):  
Aziz Bahtiar Rifa’i ◽  
Fadjar Hari Mardiansjah

This study examines the impact of agricultural land use change into a petroleum mining area to farmers’ socioeconomic conditions around petroleum mining project area in Gayam District of Kabupaten Bojonegoro. The analyses used a mix method, using both quantitative and qualitative approaches. The quantitative approach is used to determine the impact of agricultural land use change on the social and economic aspects with the respondent farmers were supported with a scoring method to determine the condition of socioeconomic vulnerability of farmers, while the qualitative approach carried out through in-depth interviews to some informants who have been affected by the project. The results shows that the presence of the petroleum mining industry has not had a positive impact yet on the farmers’ socioeconomic conditions. By the 700 hectares of agricultural land conversion, the agricultural production capacity of the area tends to decrease, including by the decreasing of the productivity of some agricultural land in a radius of 500 m from the fenceof the mining area as they are affected by the fence’s spotlight. The farmers' income also tends to decrease because of the decreasing of their working hours as the big loss of agricultural land in the area. As a result, many farmers should work outside of the area to search replacement of the arable land. These situations lead to a moderate condition of social and economic vulnerability for the farmers, especially for those who still have sufficient assets to meet the needs of their economic. 


Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 365
Author(s):  
Xiao Hu ◽  
Yujie He ◽  
Ze Kong ◽  
Jiang Zhang ◽  
Minshu Yuan ◽  
...  

Few studies have focused on the combined impact of climate change, CO2, and land-use cover change (LUCC), especially the evaluation of the impact of LUCC on net primary productivity (NPP) in the future. In this study, we simulated the overall NPP change trend from 2010 to 2100 and its response to climatic factors, CO2 concentration, and LUCC conditions under three typical emission scenarios (Representative Concentration Pathway RCP2.6, RCP4.5, and RCP8.5). (1) Under the predicted global pattern, NPP showed an increasing trend, with the most prominent variation at the end of the century. The increasing trend is mainly caused by the positive effect of CO2 on NPP. However, the increasing trend of LUCC has only a small positive effect. (2) Under the RCP 8.5 scenario, from 2090 to 2100, CO2 has the most significant positive impact on tropical areas, reaching 8.328 Pg C Yr−1. Under the same conditions, climate change has the greatest positive impact on the northern high latitudes (1.175 Pg C Yr−1), but it has the greatest negative impact on tropical areas, reaching −4.842 Pg C Yr−1. (3) The average contribution rate of LUCC to NPP was 6.14%. Under the RCP8.5 scenario, LUCC made the largest positive contribution on NPP (0.542 Pg C Yr−1) globally from 2010 to 2020.


2021 ◽  
Vol 35 (2) ◽  
pp. 270-274
Author(s):  
WARIDIN WARIDIN ◽  
◽  
I Putu ASTAWA ◽  

Tourism becomes a hotly discussed topic because it has a significant impact on the economy, social, and culture. This study analyzes changes in yard land use to support sustainable tourism based on local culture, namely the culture of harmony. This research was conducted through two approaches. The first was carried out qualitatively to see changes in depth in the use of Ubud community yards. The second is done quantitatively with the help of statistics to determine the impact of these changes. Data were collected through in-depth interviews with people who own land changes and through questionnaires. The selection of informants was based on recommendations from the traditional village leadership using the snowballing method. A total of 38 land owners have filled out the questionnaire correctly. The results of the qualitative research explained that most land-use changes were in palemahan 0r teba, which were initially used as a breeding place, remove dirt, and gardening functioned as a place to stay for tourists. The quantitative results explain that land changes based on a culture of harmony have a positive impact on the economy, social, culture, and environment. The results of this study support the development of sustainable tourism which is an important issue in today's era.


Author(s):  
Longgao Chen ◽  
Long Li ◽  
Xiaoyan Yang ◽  
Yu Zhang ◽  
Longqian Chen ◽  
...  

As an important contributor to pollutant emissions to the atmosphere, land use can degrade environmental quality. In order to assess the impact of land-use planning on the atmosphere, we propose a methodology combining the land-use-based emission inventories of airborne pollutants and the long-term air pollution multi-source dispersion (LAPMD) model in this study. Through a case study of the eastern Chinese city of Lianyungang, we conclude that (1) land-use-based emission inventorying is a more economical way to assess the overall pollutant emissions compared with the industry-based method, and the LAPMD model can map the spatial variability of airborne pollutant concentrations that directly reflects how the implementation of the land-use planning (LUP) scheme impacts on the atmosphere; (2) the environmental friendliness of the LUP scheme can be assessed by an overlay analysis based on the pollution concentration maps and land-use planning maps; (3) decreases in the emissions of SO2 and PM10 within Lianyungang indicate the overall positive impact of land-use planning implementation, while increases in these emissions from certain land-use types (i.e., urban residential and transportation lands) suggest the aggravation of airborne pollutants from these land parcels; and (4) the city center, where most urban population resides, and areas around key plots would be affected by high pollution concentrations. Our methodology is applicable to study areas for which meteorological data are accessible, and is, therefore, useful for decision making if land-use planning schemes specify the objects of airborne pollutant concentration.


2021 ◽  
Vol 3 (1) ◽  
pp. 6-12
Author(s):  
Dhai Rafsanjani ◽  
Qadriathi Dg. Bau ◽  
Muh. Iqbal Samad Suhaeb

Penelitian ini bertujuan untuk mengkaji pola pengembangan dan menganalisis dampak pengembangan kawasan reklamasi Pantai Seruni terhadap kondisi sosial ekonomi masyarakat di Kelurahan Tappanjeng Kecamatan Bantaeng Kabupaten Bantaeng. Penelitian ini bersifat deskriptif kuantitatif dengan menggunakan metode analisis yaitu overlay dan analisis korelasi. Data diperoleh dari Badan Pusat Statistik Daerah Kabupaten Bantaeng, Dinas Penataan Ruang Kabupaten Bantaeng, Kantor Kecamatan Bantaeng, Kantor Kelurahan Tappanjeng dan masyarakat Kelurahan Tappanjeng dengan dibatasi pada kawasan reklamasi Pantai Seruni yang bertindak sebagai responden. Hasil penelitian menunjukkan bahwa pola pengembangan kawasan reklamasi Pantai Seruni jika didasarkan pada pola penggunaan lahan yang  ada dengan melihat perbandingan selama 10 (sepuluh) tahun terakhir terjadi penambahan   luas   lahan   dari   9,47   hektar   menjadi   18,5  hektar. Dengan demikian pola   pengembangan   kawasan   dan   tata   guna   lahan   di lokasi penelitian meningkat. Aspek lain yang juga menjadi sisi positif dari keberadaan reklamasi Pantai Seruni adalah dimana Pantai Seruni yang dulunya hanya sekedar merupakan hamparan atau areal yang berada sekitar pantai wilayah Kelurahan Tappanjaeng dengan aktivitas manusia dan fasilitas yang sangat terbatas berubah menjadi suatu kawasan yang memberikan dampak posisif baik bagi ekositem lingkungan, kondisi sosial budaya dan ekonomi masyarakat serta pembangunan wilayah kabupaten Bantaeng secara umum. This study aims to examine the development pattern and analyze the impact of the development of Seruni Beach reclamation area on the socio-economic conditions of the community in Tappanjeng Village, Bantaeng District, Bantaeng Regency. This research is quantitative descriptive using analytical methods namely overlay and correlation analysis. Data was obtained from Bantaeng Regency Regional Statistics Agency, Bantaeng Regency Spatial Planning Office, Bantaeng Sub-district Office, Tappanjeng Kelurahan Office and Tappanjeng Village Community limited to the reclamation area of Seruni Beach as respondents. The results showed that in the development pattern of the Seruni Beach reclamation area based on existing land use patterns by looking at the comparison over the last 10 (ten) years, there was an increase in land area from 9.47 hectares to 18.5 hectares. Thus, the pattern of area development and land use in the studied site inreases. Another aspect that is also a positive side of the existence of the reclamation of the Seruni Beach is where the Seruni Beach which was once just a stretch or area around the coast of Tappanjaeng Village with human activities and facilities that are very limited has turned into an area that has a positive impact on the ecosystem environment, socio-economic culture of the community as well as the development of Bantaeng Regency in general.


VASA ◽  
2019 ◽  
Vol 48 (3) ◽  
pp. 262-269 ◽  
Author(s):  
Christian-Alexander Behrendt ◽  
Tilo Kölbel ◽  
Thea Schwaneberg ◽  
Holger Diener ◽  
Ralf Hohnhold ◽  
...  

Abstract. Background: Worldwide prevalence of peripheral artery disease (PAD) is increasing and peripheral vascular intervention (PVI) has become the primary invasive treatment. There is evidence that multidisciplinary team decision-making (MTD) has an impact on in-hospital outcomes. This study aims to depict practice patterns and time changes regarding MTD of different medical specialties. Methods: This is a retrospective cross-sectional study design. 20,748 invasive, percutaneous PVI of PAD conducted in the metropolitan area of Hamburg (Germany) were consecutively collected between January 2004 and December 2014. Results: MTD prior to PVI was associated with lower odds of early unsuccessful termination of the procedures (Odds Ratio 0.662, p < 0.001). The proportion of MTD decreased over the study period (30.9 % until 2009 vs. 16.6 % from 2010, p < 0.001) while rates of critical limb-threatening ischemia (34.5 % vs. 42.1 %), patients´ age (70 vs. 72 years), PVI below-the-knee (BTK) (13.2 % vs. 22.4 %), and rates of severe TASC C/D lesions BTK (43.2 % vs. 54.2 %) increased (all p < 0.001). Utilization of MTD was different between medical specialties with lowest frequency in procedures performed by internists when compared to other medical specialties (7.1 % vs. 25.7 %, p < 0.001). Conclusions: MTD prior to PVI is associated with technical success of the procedure. Nonetheless, rates of MTD prior to PVI are decreasing during the study period. Future studies should address the impact of multidisciplinary vascular teams on long-term outcomes.


2020 ◽  
pp. 23-40
Author(s):  
I. V. Prilepskiy

Based on cross-country panel regressions, the paper analyzes the impact of external currency exposures on monetary policy, exchange rate regime and capital controls. It is determined that positive net external position (which, e.g., is the case for Russia) is associated with a higher degree of monetary policy autonomy, i.e. the national key interest rate is less responsive to Fed/ECB policy and exchange rate fluctuations. Therefore, the risks of cross-country synchronization of financial cycles are reduced, while central banks are able to place a larger emphasis on their price stability mandates. Significant positive impact of net external currency exposure on exchange rate flexibility and financial account liberalization is only found in the context of static models. This is probably due to the two-way links between incentives for external assets/liabilities accumulation and these macroeconomic policy tools.


2019 ◽  
pp. 109-123
Author(s):  
I. E. Limonov ◽  
M. V. Nesena

The purpose of this study is to evaluate the impact of public investment programs on the socio-economic development of territories. As a case, the federal target programs for the development of regions and investment programs of the financial development institution — Vnesheconombank, designed to solve the problems of regional development are considered. The impact of the public interventions were evaluated by the “difference in differences” method using Bayesian modeling. The results of the evaluation suggest the positive impact of federal target programs on the total factor productivity of regions and on innovation; and that regional investment programs of Vnesheconombank are improving the export activity. All of the investments considered are likely to have contributed to the reduction of unemployment, but their implementation has been accompanied by an increase in social inequality.


2018 ◽  
Vol 15 (1) ◽  
pp. 55-72
Author(s):  
Herlin Hamimi ◽  
Abdul Ghafar Ismail ◽  
Muhammad Hasbi Zaenal

Zakat is one of the five pillars of Islam which has a function of faith, social and economic functions. Muslims who can pay zakat are required to give at least 2.5 per cent of their wealth. The problem of poverty prevalent in disadvantaged regions because of the difficulty of access to information and communication led to a gap that is so high in wealth and resources. The instrument of zakat provides a paradigm in the achievement of equitable wealth distribution and healthy circulation. Zakat potentially offers a better life and improves the quality of human being. There is a human quality improvement not only in economic terms but also in spiritual terms such as improving religiousity. This study aims to examine the role of zakat to alleviate humanitarian issues in disadvantaged regions such as Sijunjung, one of zakat beneficiaries and impoverished areas in Indonesia. The researcher attempted a Cibest method to capture the impact of zakat beneficiaries before and after becoming a member of Zakat Community Development (ZCD) Program in material and spiritual value. The overall analysis shows that zakat has a positive impact on disadvantaged regions development and enhance the quality of life of the community. There is an improvement in the average of mustahik household incomes after becoming a member of ZCD Program. Cibest model demonstrates that material, spiritual, and absolute poverty index decreased by 10, 5, and 6 per cent. Meanwhile, the welfare index is increased by 21 per cent. These findings have significant implications for developing the quality of life in disadvantaged regions in Sijunjung. Therefore, zakat is one of the instruments to change the status of disadvantaged areas to be equivalent to other areas.


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