scholarly journals The abundance of yellow-legged gulls Larus michahellis breeding in the historic centre of Venice, Italy and the initial effects of the new waste collection policy on the population

2021 ◽  
Author(s):  
Francesca Coccon ◽  
Lorenzo Vanni ◽  
Caterina Dabalà ◽  
Dimitri Giunchi
Keyword(s):  
Distance Sampling ◽  
Adult Survival ◽  
Waste Collection ◽  
Collection System ◽  
Recovery Service ◽  
Trophic Resources ◽  
Date Estimate ◽  
Historic Centre ◽  
Larus Michahellis ◽  
Number Of Individuals

AbstractThe yellow-legged gull Larus michahellis has undergone widespread colonization of the urban environment in the recent past. The first urban breeding gulls were recorded in the historical centre of Venice, Italy, in 2000, and by 2005 there were already 24 roof-nesting pairs, with this number increasing significantly over the last decade. In 2016, a new door-to-door garbage collection system was introduced in Venice to prevent the accumulation of rubbish in the streets and limit the trophic resources available for the species. This study provides an up-to-date estimate of the Venice yellow-legged gull urban population using distance sampling method. We also studied the effect of the new waste collection system on the species by comparing the population estimate before (2017) and after (2018) the full implementation of this change and by analysing the trend of individuals collected in the old town by the wildlife recovery service during 2010–2018. Results estimated ca. 430 breeding pairs in June 2018 showing a 36% decrease with respect to 2017. We also found a decrease in the number of 1-year-old birds and pulli collected by the wildlife recovery service starting from 2016, when the policy implementation began. Our data did not show a significant decrease in the overall number of individuals, suggesting that the new policy has a stronger effect on the breeding success of the species than on adult survival. This study emphasizes the importance of preventing rubbish accumulation in the streets as factor for reducing the abundance of urban yellow-legged gulls.

scholarly journals More than expected: the abundance of yellow-legged gulls Larus michahellis breeding in the historic centre of Venice and the initial effects of the new waste collection policy on the population

2021 ◽  
Author(s):  
Francesca Coccon ◽  
Lorenzo Vanni ◽  
Caterina Dabalà ◽  
Dimitri Giunchi
Keyword(s):  
Sampling Method ◽  
Distance Sampling ◽  
Adult Survival ◽  
Collection System ◽  
Trophic Resources ◽  
Before And After ◽  
Date Estimate ◽  
Historic Centre ◽  
Larus Michahellis ◽  
Number Of Individuals

AbstractYellow-legged gull, Larus michahellis, has undergone widespread colonization of the urban environment in recent past. Starting in 2000 this affected the historical centre of Venice, 24 roof-nesting pairs being recorded in 2005, with this number increasing significantly in the last decade. In 2016, the waste management company of Venice established a new door to door garbage collection system to prevent the accumulation of rubbish in the streets and limit the trophic resources available for the species. The study provides an up-to-date estimate of the urban population of yellow-legged gulls, using Distance Sampling method. We also studied the effect of the new system on the species by comparing the population estimate before and after the change and by analysing the trend of individuals collected in the old town by the service of wildlife recovery during 2010-2018. Results estimate 440 breeding pairs (95s% confidence interval: 326-593) in June 2018 and show a 34% decrease of breeding pairs in 2018 with respect to 2017, as well as a decrease in number of 1-year birds and pulli collected by wildlife recovery service starting from 2016, year of the policy implementation. Our data did not show a significant decrease in the overall number of individuals, suggesting the new policy has a stronger effect on the breeding success of the species than on adult survival. This study emphasizes the importance of preventing rubbish accumulation in the streets as factor for reducing the abundance of urban yellow-legged gulls.

scholarly journals Optimization of Household Waste Collection Routes Using GIS: Case Study El Bousten district, commune of Sfax, Tunisia

2017 ◽  
Vol 12 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Rim Sallem ◽  
Mohamed Rouis
Keyword(s):  
Information System ◽  
Geographical Information System ◽  
Optimization Procedure ◽  
Geographical Information ◽  
Household Waste ◽  
Environmental Costs ◽  
Waste Collection ◽  
Collection System ◽  
Network Analyst

This paper presents a method for optimizing the household waste collection system supported by Geographical Information System (GIS) tool for the sector 1of district El Bousten of Sfax commune, Tunisia. The ArcGIS Network Analyst based model is applied for the purpose of improving the collection process effectiveness, namely, the household collection bins’ reallocation along with the vehicles’ tour optimization procedure in terms of distance and time. Results indicated a reduction of 25, 83% in route and 21, 5 % in the time spent of collection along with fuel consumption savings. These findings show that GIS based model tends to exhibit significant improvements as to the collection and transportation system, therefore, to its economical and environmental costs.

Optimization of a Recyclable Waste Collection System - The Valorsul Case Study

2015 ◽  
pp. 97-105 ◽  
Author(s):  
Diogo Lopes ◽  
Tânia Rodrigues Pereira Ramos ◽  
Ana Paula Barbosa-Póvoa
Keyword(s):  
Waste Collection ◽  
Collection System

Design and Planning of Waste Collection System

2018 ◽  
pp. 141-166
Author(s):  
Ana Pires ◽  
Graça Martinho ◽  
Susana Rodrigues ◽  
Maria Isabel Gomes
Keyword(s):  
Waste Collection ◽  
Collection System

Survey of the Use of the System for Separate Collection of Household Waste from Packaging in the Municipality of Stara Zagora

2021 ◽  
Vol 6 ◽  
pp. 23-35
Author(s):  
Viktoriya Getzova ◽  
Ralitza Berberova
Keyword(s):  
Soil Water ◽  
Questionnaire Survey ◽  
Household Waste ◽  
Waste Collection ◽  
Collection System ◽  
New Production ◽  
Packaging Waste ◽  
Set Up ◽  
The One

Separate waste collection and recycling are at the basis of today’s wastemanagement. This helps the reduction of landfilled waste, which aims to reduce soil, water, and airpollution, on the one hand, and to cut down on the depletion of resources for new production, on theother. A large portion of household waste comes from the so-called “widespread waste”, whichincludes packaging waste. Legislation at European and national levels sets specific goals toovercome this problem. Separate waste collection is carried out by municipalities via wasterecycling companies, which set up and operate systems for separate collection. Citizens are at theheart of the efficient functioning of these systems. A separate waste collection system of this kindhas been established in the municipality of Stara Zagora in Bulgaria. The objective of this paper isto present the results of a questionnaire survey of the system’s users to establish their awareness andattitudes regarding the process of separate waste collection. The results can be used to improve thesystem.

Introduction of a New Waste Sorting and Collection System at a University

2017 ◽  
Author(s):  
Monica Vilms ◽  
Oliver Kalda
Keyword(s):  
Applied Sciences ◽  
School Community ◽  
Daily Basis ◽  
Household Waste ◽  
Waste Collection ◽  
Collection System ◽  
Environmental Technology ◽  
Technology Students ◽  
University Of Applied Sciences ◽  
New System

Nowadays the usage of source separation waste collection system is essential for all organisations. This paper describes a case of introduction of such a system at a university of applied sciences (UAS) in Tallinn. The project started in September 2015. The main goals of the project were to reduce the number of garbage cans in the UAS, reduce the amount of unsorted household waste and inform the school community about the significance of waste sorting and relevant environmental matters. The first step of the project was to execute a full waste audit in UAS to identify precise waste quantities which occurred on daily basis. During the week the environmental technology students weighed and sorted all the waste in all premises of the UAS. Based on the collected data, the new system comprised of 19 waste collection points with sorting instructions and adequate volume. The total number of garbage cans was reduced by 46% and mixed household garbage cans by 72%. The final step was to analyse the efficiency of the new waste collection arrangements. Results showed that the new system was well accepted and 80–85% of waste was sorted and collected in the new waste collection points.

scholarly journals An Innovative Industry 4.0 Cloud Data Transfer Method for an Automated Waste Collection System

2020 ◽  
Vol 12 (5) ◽  
pp. 1839 ◽  
Author(s):  
Costel Emil Cotet ◽  
Gicu Calin Deac ◽  
Crina Narcisa Deac ◽  
Cicerone Laurentiu Popa
Keyword(s):  
Industry 4.0 ◽  
Data Transfer ◽  
Waste Collection ◽  
Collection System ◽  
Time Data ◽  
Cloud Data ◽  
Data Encoding ◽  
Big Data Applications ◽  
Transfer Method ◽  
Cloud Applications

Moving to Industry 4.0 involves the collection of massive amounts of data and the development of big data applications that can ensure a quick data flow between different systems, including massive amounts of data and information collection from smart sensors, and sending them to cloud applications that allow real-time data monitoring and processing. Securing and protecting the transmitted data represents a big issue to be discussed and resolved. In the paper, we propose a new method of data encoding and encryption for cloud applications using PNG format images. The proposed method is described in comparison with one of the classical methods of data encoding and transmission used currently. The paper includes a case study in which the proposed method was used to collect and transmit data from an automated waste collection system. The results show that the proposed method represents a secure, fast and efficient way to send and store the data in the cloud compared to the methods currently used. The proposed method is not limited to being used only in waste management but can be used successfully for any type of manufacturing system from smart factories.

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