We organize this article in the following way: a brief introduction of the data survey and rotation-period analysis is given in "Data survey and rotation-period analysis" section; the results and discussion are presented in "Results and discussion" section; and the summary and conclusions can be found in "Summary" section.
The predictions are based on recent flight search data, survey results and analysis of current events impacting travel.
Survey and analysis of data, e.g., through i-Tree, prove that they remove considerable amounts of air pollution and reduce flooding etc.
Both authors of this manuscript contributed significantly and equally to this study, including study design, survey development, conduction of surveys, data gathering and analysis, and formal writing of this manuscript.
Survey data collection and analysis was carried out by SC.
BC contributed to design of survey, data collection and analysis, revision of the focus group schedule, qualitative data collection, data analysis, data interpretation, and drafting the manuscript.
Survey design, data acquisition and analysis of interview surveys have not always fulfilled scientific requirements for rigour or robustness in conservation research.
SS conducted the 2007 and 2008 surveys (data collection and analysis), and organised data collection and entry in 2011.
AEB conceptualized the study and survey, oversaw data collection and analysis, and wrote the manuscript with co-authors' input.
