17.3.2 Components of the Contingent Value Survey
A CVM survey must include several components, which are listed below (Carson
2000; Carson et al. 2000).
1. This section provided a one-page introduction and background information,
explaining the context in which the decision must be made and gave a detailed
but brief description of the environmental good.
2. This section presented the respondent with three scenarios accompanied by
photographs of the Nizzanim LTER Coastal Sand Dune Nature Reserve. The
three photographs represented three scenarios: total elimination of the invasive
species, containment of the spread of the invasive species, and non-intervention, resulting in 90 % coverage of the nature reserve by the invading species
within 20 years.
3. This section of the survey briefly described how the environmental good will be
provided through a public fund dedicated to the prevention of the spread of
A. saligna at the Nizzanim LTER Coastal Sand Dune Nature Reserve. The first
question in this section (question 1) asks:
Under the assumption that a designated public fund is created for the purpose of financing
programs to prevent the spread of the Blue Acacia tree on the Nizzanim Nature Reserve
and the restoration of the beach, what is the maximum amount of money that you would be
willing to pay as an contribution to this fund - In order to preserve the present situation,
I would be willing to contribute from my own pocket once a year …(payment card)
The second question in this section (question 2) asks:
Under the assumption that a designated public fund is created for the purpose of financing
programs to prevent the spread of the Blue Acacia tree on the Nizzanim Nature Reserve
and the restoration of the beach, what is the maximum amount of money that you would be
willing to pay as an contribution to this fund - In order to improve the present situation,
eliminate the Blue Acacia tree at the Nizzanim Nature Reserve and restore the reserve,
I would be wiling to contribute from my own pocket once a year …(payment card)
After each question, an identical ‘‘payment card’’ was presented with
numerical values in New Israeli Shekels (NIS)
1 which when converted into
US$ ranging from $0.00 to $33.34 increasing in increments of $1.11 and
options to write another amount or to claim to not have enough information
to answer the question.
4. This section of the CVM survey debriefs the respondents by asking them to
reveal the reasons for their answers. Respondents were asked to choose the
statement that best explains their preferences. These answers indicated whether
the respondent attributed use or non-use value to the environmental good or
alternatively was registering a protest bid or a legitimate zero response.
1 Throughout the paper the ongoing exchange rate is 5.1 NIS = 1 Euro, 4.5 NIS = 1 US$.
17 The Value of Coastal Sand Dunes
277
A CVM survey must include several components, which are listed below (Carson
2000; Carson et al. 2000).
1. This section provided a one-page introduction and background information,
explaining the context in which the decision must be made and gave a detailed
but brief description of the environmental good.
2. This section presented the respondent with three scenarios accompanied by
photographs of the Nizzanim LTER Coastal Sand Dune Nature Reserve. The
three photographs represented three scenarios: total elimination of the invasive
species, containment of the spread of the invasive species, and non-intervention, resulting in 90 % coverage of the nature reserve by the invading species
within 20 years.
3. This section of the survey briefly described how the environmental good will be
provided through a public fund dedicated to the prevention of the spread of
A. saligna at the Nizzanim LTER Coastal Sand Dune Nature Reserve. The first
question in this section (question 1) asks:
Under the assumption that a designated public fund is created for the purpose of financing
programs to prevent the spread of the Blue Acacia tree on the Nizzanim Nature Reserve
and the restoration of the beach, what is the maximum amount of money that you would be
willing to pay as an contribution to this fund - In order to preserve the present situation,
I would be willing to contribute from my own pocket once a year …(payment card)
The second question in this section (question 2) asks:
Under the assumption that a designated public fund is created for the purpose of financing
programs to prevent the spread of the Blue Acacia tree on the Nizzanim Nature Reserve
and the restoration of the beach, what is the maximum amount of money that you would be
willing to pay as an contribution to this fund - In order to improve the present situation,
eliminate the Blue Acacia tree at the Nizzanim Nature Reserve and restore the reserve,
I would be wiling to contribute from my own pocket once a year …(payment card)
After each question, an identical ‘‘payment card’’ was presented with
numerical values in New Israeli Shekels (NIS)
1 which when converted into
US$ ranging from $0.00 to $33.34 increasing in increments of $1.11 and
options to write another amount or to claim to not have enough information
to answer the question.
4. This section of the CVM survey debriefs the respondents by asking them to
reveal the reasons for their answers. Respondents were asked to choose the
statement that best explains their preferences. These answers indicated whether
the respondent attributed use or non-use value to the environmental good or
alternatively was registering a protest bid or a legitimate zero response.
1 Throughout the paper the ongoing exchange rate is 5.1 NIS = 1 Euro, 4.5 NIS = 1 US$.
17 The Value of Coastal Sand Dunes
277