<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Archiving and Interchange DTD v1.0 20120330//EN" "JATS-archivearticle1.dtd">
<article xmlns:xlink="http://www.w3.org/1999/xlink">
  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Investigating the impact of visitors' perceptions and attitudes towards Sustainable Tourism Management in Greece: The case of Pella prefecture</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Georgios Apostolidis</string-name>
          <email>gapostolidis@plandevel.auth.gr</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Department of Spatial Planning and Development, Faculty of Engineering, Aristotle University of Thessaloniki</institution>
          ,
          <country country="GR">Greece</country>
        </aff>
      </contrib-group>
      <fpage>580</fpage>
      <lpage>593</lpage>
      <abstract>
        <p>Tourism is one of the key factors for regional development while in combination with alternative forms developed in an area, it can contribute to the integrated development of economic growth within it. In this line, this study presents scenarios for the spatial and tourist interventions in the county of Pella aimed for planning the management of specific alternative forms of tourism and the development of a new policy and governance. The survey was conducted using a face-to-face questionnaire survey (n = 323 guests) and it is based on an analysis of the data which emanated from investigating the attitudes and opinions of the visitors of the Thermal Springs of Pozar, which was used as a sampling center, while the parameters considered were the sustainable management of the wider region and the creation of a tourist destination package with the purpose of transforming the area into a holiday resort.</p>
      </abstract>
      <kwd-group>
        <kwd>Recreational Value</kwd>
        <kwd>Recreational Activities</kwd>
        <kwd>PCA</kwd>
        <kwd>Typology</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1 Introduction</title>
      <p>
        Sustainable management of tourism in Greece is a growth strategy for both
government policies and private businesses and companies, following the Guidelines
set by the European Commission as well as current EU regulations. The (Contingent
Valuation Method) CVM is a recognized methodology in the field of the economics
of the environment, acknowledged by the European Commission for determining
spatial GIS data in areas of special scientific interest
        <xref ref-type="bibr" rid="ref1 ref23">(Quintano and Barredo, 2015)</xref>
        .
Determining the economic value of a good is described using direct and declared
preferences (Stated Preference Methods - SPM) and indirect methods or disclosed
preferences (Revealed Preference Method - RPM) for the economic valuation of the
environment by dividing its value in use and no use (Fürst et al. 2000). The economic
evaluation applied by the CVM methodology (direct method) can be applied to
natural resources such as forests and aquatic resources for the presentation of new
management policies and the sustainable development of a region. In particular, the
WTP technique was used for the valuation of forest recreation as an economic
dimension at the University Forest of Pertouli, in Greece
        <xref ref-type="bibr" rid="ref10 ref11 ref20">(Matsiori et al. 2012)</xref>
        . In a
coastal region of Volos, Halkos and Matsiori (2012) applied the CVM to enhance
environmental resources and recreational activities. What is more, they chose a
sample of visitors/tourists in another research with the aim to explore the importance
of water resources and valuate the protection of aquatic ecosystems
        <xref ref-type="bibr" rid="ref12">(Halkos and
Matsiori, 2013)</xref>
        . Biodiversity, another environmental parameter necessitating
protection, was the developmental pillar of the CVM for Halkos and Jones (2012).
Also, in many cases, the recreational value of economic valuation of natural
resources of a national park focuses on wildlife, with conflicts identified on the WTP
of/by visitors concerning environmental problems
        <xref ref-type="bibr" rid="ref30">(Zyl et al. 2000)</xref>
        .
      </p>
      <p>The purpose of this research is to record and analyze tourism and development
demand conditions with an environmental, social and economic impact on a region.
For this reason, with the help of employing a tool, a map for leisure was formed to
record the tourism value and the importance of a leisure destination in combination
with other ones along with intervention scenarios both in the research area of the
Thermal Springs of Pozar and the wider area.</p>
      <sec id="sec-1-1">
        <title>Investigation of CVM Analysis</title>
        <p>
          The method of Dependent Valuation (CVM) is based on the development of
techniques of Willingness to Pay (WTP)
          <xref ref-type="bibr" rid="ref18">(Jones et al. 2011)</xref>
          Willingness to
Accept(WTA) and Willingness to Travel (WTT) using a questionnaire as a tool which
involved both open and closed questions as well as the use of cards
          <xref ref-type="bibr" rid="ref29">(Vakrou and
Parry, 1997)</xref>
          . The hypothetical market which is formed through the application of the
method is developed through specific stages of presenting environmental problems
and ways of solving them or rationally managing them
          <xref ref-type="bibr" rid="ref14 ref7">(Garrod and Willis, 1999)</xref>
          .
        </p>
        <p>
          The satisfaction of visitors in a recreation area can be expressed and measured by
means of presenting criteria of leisure activities
          <xref ref-type="bibr" rid="ref2">(Arabatzis and Grigoroudis, 2010)</xref>
          .
Concerning mountainous regions, many researches presented goods to be evaluated
by applying the WTP for offering services with an environmental, social and
economic impact on a region
          <xref ref-type="bibr" rid="ref1 ref23">(Apostolidis and Latinopoulos, 2015)</xref>
          . Attitudes and
opinions of the visitors of an aesthetic forest in Greece were investigated by
Papaspyropoulos and Pappas (2008), who developed a guest typology by creating a
hypothetical market and use of ticket with the aim to provide an economic evaluation
of the visiting area by consumers and highlight the importance of multiple-use
forests.
        </p>
        <p>
          Investigating the literature concerning CVM, most authors and researchers
combine this methodology with additional multivariate analysis such as PCA, Cluster
Analysis, and Cronbach's a, resulting in the development of reliability indicators for
governance policies
          <xref ref-type="bibr" rid="ref10 ref11 ref13 ref17 ref20 ref9">(Jones et al. 2008; Halkos and Matsiori, 2012; Halkos and
Matsiori, 2014)</xref>
          . In addition, in research conducted by Togridou et al. (2006), the
accounting regression model (Logit) and the multiple regression models were used to
indicate the importance of environmental parameters, information sources with
characteristics of visitors of the sample.
To conduct the present research, questionnaires aimed at the population of visitors to
the Pozar Thermal Springs during the winter period of 2015-2016 were used. The
sample size is n = 323 guests, which should be considered as representative, and the
use of results should meet the basic statistical conditions. A questionnaire was
drafted and tailored to be filled on site with personal interviews of the respondents
guests carried out by the investigator.
        </p>
        <p>
          The Haphazard Sampling method was used, which is a method applicable to
recreation and yields samples that are not based on probabilities
          <xref ref-type="bibr" rid="ref19">(Matis, 2004)</xref>
          . The
definition of the total sample size is provided by the following Formula
          <xref ref-type="bibr" rid="ref15 ref26">(Humphry,
2004; Thrusfield, 2005)</xref>
          :
n =
!! ! !(!!!)
!!
where:
Ζ = value from standard distribution corresponding to desired confidence level
(Z=1.96 for 95% CI)
P= estimated true proportion (prevalence)=0.3
e=desired precision=0.05
Therefore, the Total Sample Size calculated: n= 323 questioners.
        </p>
        <p>
          The processing of the results and the analysis of the data were realized by using
the statistic program IBM SPSS v.20. The Method of Factor Analysis in Principal
Component Analysis was used to reduce the large number of criteria set on the
respondents and to form new parameters and finally the Rotation Method: Varimax
with Kaiser Normalization was used
          <xref ref-type="bibr" rid="ref21 ref24 ref28 ref3 ref5 ref6">(Rencher, 2002; Arabatzis and Myronidis, 2011;
Tsiantikoudis et al. 2013; Ntona et al. 2015; Galatsidas et al. 2015)</xref>
          . The x2 test was
used to investigate the relationships and strength among the variables
          <xref ref-type="bibr" rid="ref21">(Ntona et al.
2015)</xref>
          . Also, Hierarchical Cluster Analysis was used in order to create a typology
          <xref ref-type="bibr" rid="ref16 ref25 ref5 ref6 ref8">(Sharma, 1996; Johnson and Wichern, 2007; Grigoroudis et al. 2012; Galatsidas et
al. 2015)</xref>
          .
(1)
3
        </p>
      </sec>
    </sec>
    <sec id="sec-2">
      <title>Field of Research</title>
      <p>This study focused on the prefecture of Loutraki Arideas, which is situated in Central
Macedonia. The Loutraki region is a mainly mountainous area of 1.146 residents,
according to the Greek National Census of 2011. Tourist facilities are organized in a
small spa town with hotels, swimming pools, changing rooms, restaurants, cafeteria.
In the Spa area, there are guesthouses within a distance of one kilometer, while in
Loutraki and the wider area there are hotels and apartments. In winter, many visitors
combine the thermal spa with the ski center of Kaimaktsalan. Hiking, walks in the
gorge of Loutra, climbing, and visits to the caves of the area are some of the
activities for the visitors.</p>
    </sec>
    <sec id="sec-3">
      <title>Results</title>
      <p>As regards the question, which focused on creating a new vision or proposal on the
management of the wider region, 83.3% of the sample (n = 269) guests stated that
they have a new vision for the region, while only 16.7% (n = 54) of the respondents
have no vision. Then, visitors who have a new management vision were asked
through prefabricated closed-ended questions to choose proposals that can be
implemented in the region through the technique of willingness to travel (WTT). The
first proposal concerned the construction of a Cable car from the Thermal Springs of
Pozar to the Kaimaktsalan Ski Centre since both recreational areas are located in the
same mountainous area. The results revealed that this scenario would be chosen by
205 guests (63.5%) while it would not be chosen by 64 of the respondents (19.8%).
Regarding the second proposal, which involved developing an Environmental
Education Center, 124 respondents (38.4%) were positive while 145 respondents,
that is 44.9% were negative. Regarding the third proposal, the development of
organized ecotourism leisure activities such as hiking/climbing, etc., 171 of the
sample visitors, that is 52.9% were in favour of it while as a lower rate of 30.3% (n =
98) were not in favour of this vision. Finally, the opportunity was given to sample
visitors to express their opinion through a free and open-ended question which
produced the results presented below. The Alternative Proposals for the Management
of the Wider Area are: Wi Fi ,Wind Surfing – Kite-surfing in Lake Vegoritida,
Sports Facilities, Upgrading the facilities of Pozar, Utilization of Geothermal Energy,
Utilization and renovation of the old hotel, Utilization of Geothermal Energy,
Development of Religious tourism in Monastiraki, Utilization of old accommodation
facilities, Development of an English language site with offers on tourism packages,
Creating a sports and medical center , Designating a special area for caravans
Establishing Sanitary facilities for waste management, Create fauna access sites,
Developing a traditional settlement, Leisure time-Introducing organized centres
Clubs, Promoting abroad through advertising, Water resources management,
Activities for children, Horse riding , Casino , Better links among nearby destinations
(roads), Campsite, Construction of a Pool Bar, Cafes for non-smoking individuals,
Transferring and creating Folklore Museum within the Resort, Guided tours in the
Springs area, Guided Tours across Almopia region - excursions, Exploring nature on
horseback and more Spas and baths.</p>
      <p>The estimate of the additional frequency of visits to the Pozar Thermal Springs in
case the options related to the visions for the region were realized, has significant
results concerning the positive effects that can arise at the economic and social level.
77.1% of the sample, that is n = 249 respondents, would more often visit the Spa
while only 5.6% (n = 18) would not. The figures for the tourists’ visits based on
response data in terms of visiting the Thermal Springs more times per year are
presented in Table 1. Concerning managing of the Thermal Spring, the respondent
guests were asked indicate whether they have a suggestion/ vision. The majority,
75.2% (n = 243) had an alternative while only 24.8% (n = 80) did not have one. For
the 243 respondents who had a positive alternative option, closed-type scenarios gave
them the chance to choose. The first proposal was to create a hotel complex within
the resort; statistics revealed that 117 respondents (36.2%) would like this vision,
whereas 126 would not choose this option that is, 39% of 75.2% of the sample who
were positive towards the scenarios. The second scenario involved the creation of
ultramodern spas; the results of the analysis revealed a positive response rate by the
majority of the sample at a rate of 48.3% (n = 156), while this option was not desired
by 26.9% (n = 87). Creating new leisure parks with specific thematic areas in the
resort comprised another vision for the Thermal Springs area; 140 visitors (43.3%)
selected this alternative and wanted to implement this proposal as opposed to 103
(31.9%) who did not choose to implement it. Improving technical infrastructure of
the area (roads, sidewalks, etc.) was selected by 138 of the respondents (42.7%)
while 104 respondents (32.2%) did not select it. Finally, the sample visitors were
given the opportunity to express their opinion on a free and open-ended question
about what they wish to have implemented in the area of Loutra; the results are
shown below. The alternative Scenarios of Managing the Thermal Springs are:
Restoration of the surroundings and developing of new ones, Gym with personal
trainers and Erotic Massage, Creating facilities for the disabled, Creating theme
parks, Establishing a clinic, Creating new changing rooms with lockers, Creating
facilities for the disabled, Advertising campaign of the Thermal Springs and the
region, Cleanliness of the pool and waterfalls infrastructure, Construction of a Pool
Bar, Guides available within the resort, Guides available in the region, Presentation
of the ancient history of the Thermal Springs, More benefits, more cleanliness at the
River and Hydroelectric station.</p>
      <p>
        The WTT technique was also used in the spas management scenarios concerning
the realization of the visions and the proposals selected with reference the visit
frequency in the wider region. 71.5% of the sample (n = 231) responded that they
would more often visit the region while only 3.4% (n =11) would not visit it. The
figures for the tourists’ visits based on response data in terms of visiting the wider
region more times per year are presented in Table 2. The comparative results from
the application of the WTT technique revealed that in case the scenarios concerning
the management of the wider region were applied, the WTT per year would be 1288
journeys compared to the ones to the Thermal Springs area, which are 1125 trips.
Furthermore, to investigate the attitudes and opinions of the visitors towards
environmental issues, their opinion for environmental awareness, the Natura 2000
network, etc. was sought. The environmental awareness of visitors to issues related
to caring for natural resources (rangeland, forest, water, game) was investigated by
the degree of their interest. The responses of the total sample (n = 323) showed great
environmental awareness 70.9% (n = 229), low environmental awareness 27.6 (n =
89) and no environmental awareness 1.5% (n = 5) respectively. As to their
knowledge of what the protected areas are
        <xref ref-type="bibr" rid="ref4">(e.g. areas included in the network Natura
2000)</xref>
        , frequencies and percentages of the sample show that the majority of
respondents, 68.1% (n = 220), know what the Natura 2000 areas are while 31.9% (n
= 103) of respondents do not know. The percentage distribution of information
resources of the protected areas Natura 2000, of the sample who have knowledge of
these areas, showed that the percentage of respondents who draws information on the
protected areas from the media is 32.8%, from friends and relatives 20.1%, from
government agencies/local authorities 12.1%, from the internet 39.9%, from their
studies 19.5%, while only 7.4% of the respondents draws information from seminars
and 1.2% from another source (n = 220). The knowledge of the respondents on the
classification and integration of Voras Mountain area in the Natura 2000 network as
a game reserve cannot be regarded as satisfactory since the majority of the
respondents (n = 204) do not know about the protected area while only 119 guests of
the total sample declared to have some relevant knowledge.
      </p>
      <p>As part of the correlation of the Pozar Thermal Springs with the Kaimaktsalan
Ski Centre, the visitors of the Baths were asked to answer whether they have visited
the Ski resort. Their responses indicate that 225 visitors have visited the Ski Center
in contrast to 98 who have not visited it, a fact that indicates that at a first stage there
is a connection between the two areas.</p>
      <p>To construct a new tourist plan with special and alternative forms of tourism
which are developed in the wider area, the tourist attraction areas were presented to
the sample of guests who were asked to choose which of the following destinations
they would choose or have already chosen during their visit. The plan shows that the
visitors will plan or have planned a trip firstly to the Ski Center (n = 214), a result
which indicates that ski tourism emerges first in the preferences of visitors to the
area, then they choose the settlement of St. Athanasios as a travel destination, that is,
cultural tourism (n = 175), eco-tourism on Mt. Voras (n = 83) follows, after that, the
visitors choose the Lake Vegoritida, that is, water sports tourism (n = 56), the
destination of the wetland Agra-Vrytton-Nisi follows by developing agrotourism (n =
44) and finally, the tourist plan of preferences ends with the selection of Panagitsa
airport (n = 36)which offers activities of air sports tourism.</p>
      <p>The results of the Factor Analysis show that the analysis is significant for the
research. The KMO has a very high index of 0.927 (sig. = 0), which means that the
exploratory work is almost perfect. Approx. Chi-Square=5161.397 and df:276. From
the 24 eigenvalues, which were exported, only four are located above one and
explain the 64.841% of the variance. The results are shown in the block diagram
(scree plot) in which there is an exact alignment of the curve with the horizontal axis
x. After the final separation and the creation of new factors, the location of the
variables within the dimensions of leisure activities drawing on the elements of
environmental resources, took place as follows: Fly Foxing, Kayaking, Rafting,
Boating-Ecotourism, 4x4 Routes, Horse Riding and Archery, contribute to the first
factor (activities related to water), Moto cross, Snowboarding, Motorcycle Racing,
Aviation - Air sports, Controlled fishing, Professional winter sports, Camping and
Paragliding contribute to the second factor (activities related to the earth and the air ),
Climbing, Exploration of forest paths, Climbing, Mountain Hiking-Trekking,
Mountain Biking, Adventure games in nature and Cycling contribute to the third
factor (recreational activities related to the forest), while only the Tour of the Chapel
of Prophet Elias and Skiing at the Ski resort of Kaimaktsalan contribute the fourth
factor (activities related to the snow) . Finally, the largest load occurred between the
first and the second factor with a 0.554 index.</p>
      <sec id="sec-3-1">
        <title>Variables</title>
        <p>Fly Fox
Kayak
Moto cross
Rafting
Snowboard
Motorcycle Racing
Aviation – Air sports
Climb
Boating - Ecotourism
4x4 routes
Tour of the chapel of Prophet Elias
Controlled Fishing
Forestry exploration paths
Professional winter sports
Riding
Camping
Climbing
Mountain Hiking -Trekking
Mountain Biking
Adventure games in nature
Paragliding
Cycling
Skiing at the resort of Kaimaktsalan
Archery
Cluster1: (the third factor outweighs) = Green Tourists with special motivation for
the mountain. Cluster2: (the second factor outweighs) = Tourists with a motive for
racing sports. Cluster3: (the first factor outweighs) = Tourists seeking alternative
adventure.</p>
        <p>Frequency Percent To construct a novel tourist
235 72.8 plan for developing a new
35 10.8 policy and governance in the
52 16.1 region, guests were asked to</p>
        <p>Total 322 99.7 answer if they would be
Missing System 1 0.3 interested in having a combo
Total 323 100 ticket for attempting further
leisure activities in the area.</p>
        <p>Then, as part of the data collection process, a recreation card was used which
involved all leisure activities at the county level as well as their cost currently. The
results revealed that the 88.9% of the total sample of 323 respondents, that is their
vast majority (n = 287) would choose this combo-ticket, as opposed to 11.1% (n =
36) who would not choose it. For the guests who had selected the common
economical ticket for recreation activities, the descriptive results are presented by
Missing System (n = 36 i.e., 11.1%).
From the above table, it is shown that the majority of the sample prefers
Balneotherapy, skiing, riding, boating, kayaking and flights in order of preference.
Pearson x 2 between kayaking and boating activities showed prices equal to 66.015
(df = 1, sig. = 0) and Phi Cramer's V = 0.480 (sig. = 0) is weakly positive and
statistically significant at level (p &lt;0.05). All the results for the control x 2 for the
tour plan are presented in the following table. The minimum total percentage
discount on the selected activities in the combo ticket was requested to encourage
visitors to buy it.</p>
        <p>Table 6. Percentage descriptive statistics of total
Combo-Ticket discount</p>
        <p>Valid
Missing</p>
        <p>In addition, 278 of the visitors
(86.1%) would like to have
N 28376 doregstainniazteiodnsvisitisn tothtehe rtoeguiroisnt
Mean 13.59 offered, while only a part of the
Median 10 sample that is 13.9% (n = 45)
Std. Deviation 12.058 would not opt for them. Of
Variance 145.397 them, 265 respondents (82%)
Range 59 stated that they would be willing
Minimum 1 to pay for such a service while
Maximum 60 only 22 respondents (6.8%)
would not be willing to pay. The
maximum amount of money that the visitors in the sample would be willing to pay
for such service was identified, as shown below in terms of descriptive statistics.</p>
      </sec>
    </sec>
    <sec id="sec-4">
      <title>5 Conclusions</title>
      <p>According to the research findings, the technique of WTT offers future spatial
intervention scenarios in the study area. Heyes and Heyes (1999) developed a series
of economic evaluation tools, contingent valuation method (CVM) - contingent
activity method (CAM) &amp; travel cost method (TCM), evaluating the recreational
benefits from/ of a park with tourist importance. The present study attempts to shape
and define the specific resource needs with the aim of sustainable, effective
management and control of the environment in accordance with the potential of the
area. After all, it is believed that leisure activities can identify developmental goals
and create tourist standards to ensure the maximum satisfaction of guests.
Moreover, the results of this research propose a different tourist plan compared to the
already existing ones, which involve the development of a new policy, and
governance identified as essential at the local level. The models formed to determine
the quality level of leisure services within this framework of sustainable tourism
development. Last but not least, suggestions for further research can involve the
implementation of the TCM for determining both the recreation value and the
tourism value of the particular region.</p>
    </sec>
  </body>
  <back>
    <ref-list>
      <ref id="ref1">
        <mixed-citation>
          1.
          <string-name>
            <surname>Apostolidis</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Latinopoulos</surname>
            ,
            <given-names>D.</given-names>
          </string-name>
          (
          <year>2015</year>
          )
          <article-title>Prospects for Sustainable Tourism Development in Ski Resorts-Literature Review</article-title>
          .
          <source>Proceedings of the 2nd Greek National Environmental Conference of Thessaly, Skiathos</source>
          <volume>26</volume>
          /9/2015-28/9/2015. p.
          <fpage>360</fpage>
          -
          <lpage>366</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref2">
        <mixed-citation>
          2.
          <string-name>
            <surname>Arabatzis</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Grigoroudis</surname>
            ,
            <given-names>E.</given-names>
          </string-name>
          (
          <year>2010</year>
          )
          <article-title>Visitors' satisfaction, perceptions and gap analysis: The case of Dadia-Lefkimi-Souflion National Park</article-title>
          .
          <source>Forest Policy and Economics</source>
          ,
          <volume>12</volume>
          , p.
          <fpage>163</fpage>
          -
          <lpage>172</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref3">
        <mixed-citation>
          3.
          <string-name>
            <surname>Arabatzis</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Myronidis</surname>
            ,
            <given-names>D</given-names>
          </string-name>
          , (
          <year>2011</year>
          )
          <article-title>Contribution of SHP Stations to the development of an area and their social acceptance</article-title>
          .
          <source>Renewable and Sustainable Energy Reviews</source>
          ,
          <volume>15</volume>
          , p.
          <fpage>3909</fpage>
          -
          <lpage>3917</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref4">
        <mixed-citation>
          4.
          <string-name>
            <surname>Fürst</surname>
            ,
            <given-names>E.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Barton</surname>
            ,
            <given-names>D.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Jiménez</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          (
          <year>2000</year>
          )
          <article-title>The Cost and Benefits of Reef Conservation in the Bonaire Marine Park, in the Netherlands Antilles</article-title>
          .
          <source>Environmental Valuation A Worldwide Compendium of Case Studies. Ed. Jennifer Rietbergen-McCracken and Hussein Abaza. UNEP, Earthscan Earthscan Publications Ltd</source>
          , London. p.
          <fpage>162</fpage>
          -
          <lpage>171</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref5">
        <mixed-citation>
          5.
          <string-name>
            <surname>Galatsidas</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Amanatidou</surname>
            ,
            <given-names>D.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Soutsas</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          (
          <year>2015</year>
          )
          <article-title>Applying Multivariate Statistics into forest management planning: potential conditions of erosion danger in the forest of Thessaloniki, Greece</article-title>
          .
          <source>Journal of Environmental Protection and Ecology</source>
          ,
          <volume>16</volume>
          (
          <issue>1</issue>
          ), p.
          <fpage>233</fpage>
          -
          <lpage>242</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref6">
        <mixed-citation>
          6.
          <string-name>
            <surname>Galatsidas</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Amanatidou</surname>
            ,
            <given-names>D.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Soutsas</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          (
          <year>2015</year>
          )
          <article-title>Applying Multivariate Statistics to evaluate erosion danger in the forest of Thessaloniki, Greece on the basis of forest stand characteristics</article-title>
          .
          <source>Journal of Environmental Protection and Ecology</source>
          ,
          <volume>16</volume>
          (
          <issue>1</issue>
          ), p.
          <fpage>243</fpage>
          -
          <lpage>251</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref7">
        <mixed-citation>
          7.
          <string-name>
            <surname>Garrod</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Willis</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          (
          <year>1999</year>
          )
          <article-title>Economic Valuation of the Environment Methods and Case Studies. Edward Elgar Publishing</article-title>
          , Inc.
        </mixed-citation>
      </ref>
      <ref id="ref8">
        <mixed-citation>
          8.
          <string-name>
            <surname>Grigoroudis</surname>
            ,
            <given-names>E.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Arabatzis</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Tsiantikoudis</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          (
          <year>2012</year>
          )
          <article-title>Multivariate Analysis of Dadia-Lefkimi-Soufli National Park visitors' satisfaction</article-title>
          .
          <source>Journal of Food Agriculture &amp; Environment</source>
          ,
          <volume>10</volume>
          (
          <issue>3</issue>
          &amp;4), p.
          <fpage>1256</fpage>
          -
          <lpage>1264</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref9">
        <mixed-citation>
          9.
          <string-name>
            <surname>Halkos</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Jones</surname>
            ,
            <given-names>N.</given-names>
          </string-name>
          (
          <year>2012</year>
          )
          <article-title>Modeling the effect of social factors on improving biodiversity protection</article-title>
          .
          <source>Ecological Economics</source>
          ,
          <volume>78</volume>
          , p.
          <fpage>90</fpage>
          -
          <lpage>99</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref10">
        <mixed-citation>
          10.
          <string-name>
            <surname>Halkos</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Matsiori</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          (
          <year>2012</year>
          )
          <article-title>Assessing the Economic Value of Protecting Artificial Lakes</article-title>
          , MRPA - Munich Personal RePEc Archive.
        </mixed-citation>
      </ref>
      <ref id="ref11">
        <mixed-citation>
          11.
          <string-name>
            <surname>Halkos</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Matsiori</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          (
          <year>2012</year>
          )
          <article-title>Determinants of willingness to pay for coastal zone quality improvement</article-title>
          .
          <source>The Journal of Socio-Economics</source>
          ,
          <volume>41</volume>
          , p.
          <fpage>391</fpage>
          -
          <lpage>399</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref12">
        <mixed-citation>
          12.
          <string-name>
            <surname>Halkos</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Matsiori</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          (
          <year>2013</year>
          )
          <article-title>The Relationship between People's attitude and Willingness to Pay for River Conservation</article-title>
          . MPRA - Munich Personal RePEc Archive.
        </mixed-citation>
      </ref>
      <ref id="ref13">
        <mixed-citation>
          13.
          <string-name>
            <surname>Halkos</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Matsiori</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          (
          <year>2014</year>
          )
          <article-title>Exploring social attitude and willingness to pay for water resources conservation</article-title>
          .
          <source>Journal of Behavioral and Experimental Economics</source>
          ,
          <volume>49</volume>
          , p.
          <fpage>54</fpage>
          -
          <lpage>62</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref14">
        <mixed-citation>
          14.
          <string-name>
            <surname>Heyes</surname>
            ,
            <given-names>C.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Heyes</surname>
            ,
            <given-names>A.</given-names>
          </string-name>
          (
          <year>1999</year>
          )
          <article-title>Willingness to Pay Versus Willingness to Travel: Assessing the Recreational Benefits from Dartmoor National Park</article-title>
          .
          <source>Journal of Agricultural Economics</source>
          ,
          <volume>50</volume>
          (
          <issue>1</issue>
          ), p.
          <fpage>124</fpage>
          -
          <lpage>139</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref15">
        <mixed-citation>
          15.
          <string-name>
            <surname>Humphry</surname>
            ,
            <given-names>R.W.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Cameron</surname>
            ,
            <given-names>A.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Gunn</surname>
            ,
            <given-names>G.J.</given-names>
          </string-name>
          (
          <year>2004</year>
          )
          <article-title>A practical approach to calculate sample size for herd prevalence surveys</article-title>
          .
          <source>Preventive Veterinary Medicine</source>
          ,
          <volume>65</volume>
          , p.
          <fpage>173</fpage>
          -
          <lpage>188</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref16">
        <mixed-citation>
          16. Johnson, Ρ. and
          <string-name>
            <surname>Wichern</surname>
            ,
            <given-names>D</given-names>
          </string-name>
          , (
          <year>2007</year>
          )
          <article-title>Applied Multivariate Statistical Analysis</article-title>
          . Pearson Prentice Hall, Inc.
        </mixed-citation>
      </ref>
      <ref id="ref17">
        <mixed-citation>
          17.
          <string-name>
            <surname>Jones</surname>
            ,
            <given-names>N.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Sophoulis</surname>
            ,
            <given-names>C.M.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Malesios</surname>
            ,
            <given-names>C.</given-names>
          </string-name>
          (
          <year>2008</year>
          )
          <article-title>Economic valuation of coastal water quality and protest responses: a case study in Mitilini, Greece</article-title>
          .
          <source>The Journal of Socio-Economics</source>
          ,
          <volume>37</volume>
          , p.
          <fpage>2478</fpage>
          -
          <lpage>2491</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref18">
        <mixed-citation>
          18.
          <string-name>
            <surname>Jones</surname>
            ,
            <given-names>N.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Panagiotidou</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Spilanis</surname>
            ,
            <given-names>I.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Evangelinos</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Dimitrakopoulos</surname>
            ,
            <given-names>P.</given-names>
          </string-name>
          (
          <year>2011</year>
          )
          <article-title>Visitors' perceptions on the management of an important nesting site for loggerhead sea turtle (Caretta caretta L.): The case of Rethymno coastal area in Greece</article-title>
          .
          <source>Ocean &amp; Coastal Management</source>
          ,
          <volume>54</volume>
          , p.
          <fpage>577</fpage>
          -
          <lpage>584</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref19">
        <mixed-citation>
          19.
          <string-name>
            <surname>Matis</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          (
          <year>2004</year>
          )
          <article-title>Sampling of Natural Resources, Third Edition</article-title>
          , Pegasus,Thessaloniki. (in Greek).
        </mixed-citation>
      </ref>
      <ref id="ref20">
        <mixed-citation>
          20.
          <string-name>
            <surname>Matsiori</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Anagnos</surname>
            ,
            <given-names>N.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Aggelopoulos</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Soutsas</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          (
          <year>2012</year>
          )
          <article-title>Economic valuation of forest recreation: The case of the University Forest of Pertouli in Greece</article-title>
          .
          <source>Journal of Food, Agriculture &amp; Environment</source>
          ,
          <volume>10</volume>
          (
          <issue>2</issue>
          ), p.
          <fpage>866</fpage>
          -
          <lpage>870</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref21">
        <mixed-citation>
          21.
          <string-name>
            <surname>Ntona</surname>
            ,
            <given-names>E.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Arabatzis</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Kyriakopoulos</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          (
          <year>2015</year>
          )
          <article-title>Energy saving: Views and attitudes of students in secondary education</article-title>
          .
          <source>Renewable and Sustainable Energy Reviews</source>
          ,
          <volume>46</volume>
          , p.
          <fpage>1</fpage>
          -
          <lpage>15</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref22">
        <mixed-citation>
          22.
          <string-name>
            <surname>Papaspyropoulos</surname>
            ,
            <given-names>K.G.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Pappas</surname>
            ,
            <given-names>I.A.</given-names>
          </string-name>
          (
          <year>2008</year>
          )
          <article-title>Visitors' profile and their perception of the aesthetic forest Kouri of Almyros, Greece</article-title>
          .
          <source>6th European Conference on Ecological Restoration</source>
          ,
          <fpage>8</fpage>
          -
          <issue>12</issue>
          <year>September 2008</year>
          , Ghent, Belgium.
        </mixed-citation>
      </ref>
      <ref id="ref23">
        <mixed-citation>
          23.
          <string-name>
            <surname>Quintano</surname>
            ,
            <given-names>P.N.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Barredo</surname>
            ,
            <given-names>J.</given-names>
          </string-name>
          (
          <year>2015</year>
          ).
          <article-title>A database of the recreational value of European forests. Design and implementation from recreational valuation studies</article-title>
          .
          <source>European Commission, JRC Technical Reports</source>
          , Join Research Centre-
          <article-title>Institute for Institute for Environment and Sustainability</article-title>
          .
        </mixed-citation>
      </ref>
      <ref id="ref24">
        <mixed-citation>
          24.
          <string-name>
            <surname>Rencher</surname>
            ,
            <given-names>A.C.</given-names>
          </string-name>
          (
          <year>2002</year>
          ).
          <article-title>Methods of Multivariate Analysis</article-title>
          , Wiley-Interscience,
          <string-name>
            <surname>A John Wiley</surname>
          </string-name>
          &amp; Sons , Inc. Publication.
        </mixed-citation>
      </ref>
      <ref id="ref25">
        <mixed-citation>
          25.
          <string-name>
            <surname>Sharma</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          (
          <year>1996</year>
          )
          <article-title>Applied Multivariate Techniques</article-title>
          , John Wiley &amp; Sons, Inc.
        </mixed-citation>
      </ref>
      <ref id="ref26">
        <mixed-citation>
          26.
          <string-name>
            <surname>Thrusfield</surname>
          </string-name>
          , Μ. (
          <year>2005</year>
          )
          <article-title>Veterinary Epidemiology</article-title>
          . Third Edithion, Blackwell Science.
        </mixed-citation>
      </ref>
      <ref id="ref27">
        <mixed-citation>
          27.
          <string-name>
            <surname>Togridou</surname>
            ,
            <given-names>A.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Hovardas</surname>
            ,
            <given-names>T.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Pantis</surname>
            ,
            <given-names>J.D.</given-names>
          </string-name>
          (
          <year>2006</year>
          )
          <article-title>Determinants of visitors' willingness to pay for the National Marine Park of Zakynthos, Greece</article-title>
          .
          <source>Ecological Economics</source>
          ,
          <volume>60</volume>
          , p.
          <fpage>308</fpage>
          -
          <lpage>319</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref28">
        <mixed-citation>
          28.
          <string-name>
            <surname>Tsiantikoudis</surname>
            ,
            <given-names>S.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Soutsas</surname>
            ,
            <given-names>K.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Apostolidis</surname>
            ,
            <given-names>G.</given-names>
          </string-name>
          (
          <year>2013</year>
          )
          <article-title>Contribution of Game Resources to the Quality of Life: The case of the Evros prefecture</article-title>
          .
          <source>Journal of Environmental Protection and Ecology</source>
          ,
          <volume>14</volume>
          (
          <issue>1</issue>
          ), p.
          <fpage>240</fpage>
          -
          <lpage>246</lpage>
          .
        </mixed-citation>
      </ref>
      <ref id="ref29">
        <mixed-citation>
          29.
          <string-name>
            <surname>Vakrou</surname>
            ,
            <given-names>A.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Parry</surname>
            ,
            <given-names>W.H.</given-names>
          </string-name>
          (
          <year>1997</year>
          )
          <article-title>Economic Valuation and Management of Recreation at Mount Olympus National Park</article-title>
          .
          <source>Proceedings of 5th Conference on Environmental Science and Technology</source>
          ,
          <source>Vol(b)</source>
          ,
          <source>Molyvos Lesvos, Greece</source>
          ,
          <fpage>1</fpage>
          -
          <issue>4</issue>
          <year>September 1997</year>
          .
        </mixed-citation>
      </ref>
      <ref id="ref30">
        <mixed-citation>
          30.
          <string-name>
            <surname>Zyl</surname>
            ,
            <given-names>H.</given-names>
          </string-name>
          ,
          <string-name>
            <surname>Store</surname>
            ,
            <given-names>T.</given-names>
          </string-name>
          and
          <string-name>
            <surname>Leiman</surname>
            ,
            <given-names>A.</given-names>
          </string-name>
          (
          <year>2000</year>
          )
          <article-title>The Recreational Value of Viewing Wildlife in Kenya. Environmental Valuation A Worldwide Compendium of Case Studies</article-title>
          . Ed. Jennifer
          <string-name>
            <surname>Rietbergen-McCracken</surname>
            and
            <given-names>Hussein</given-names>
          </string-name>
          <string-name>
            <surname>Abaza</surname>
          </string-name>
          . UNEP, Earthscan Earthscan Publications Ltd, London. p.
          <fpage>35</fpage>
          -
          <lpage>52</lpage>
          .
        </mixed-citation>
      </ref>
    </ref-list>
  </back>
</article>