Vineyard (vit)

National Reference Metadata in ESS Standard for Quality Reports Structure (ESQRS)

Compiling agency: Statistics Portugal

Time Dimension: 2015-50

Data Provider: PT1

Data Flow: PERMCRP_VINEQ_5


Eurostat metadata
Reference metadata
1. Contact
2. Statistical presentation
3. Statistical processing
4. Quality management
5. Relevance
6. Accuracy and reliability
7. Timeliness and punctuality
8. Coherence and comparability
9. Accessibility and clarity
10. Cost and Burden
11. Confidentiality
12. Comment
Related Metadata
Annexes (including footnotes)
 



For any question on data and metadata, please contact: EUROPEAN STATISTICAL DATA SUPPORT

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1. Contact Top
1.1. Contact organisation

Statistics Portugal

1.2. Contact organisation unit

Economic Statistics Department / Agriculture and Environment Statistics Unit

1.5. Contact mail address

Av. António José de Almeida

1000-043 LISBOA


2. Statistical presentation Top
2.1. Data description

The vineyard data set includes data on the structure of vineyards in the European Union. It covers the holdings growing vines intended to produce grapes for other purposes than table grapes or growing plants for vegetative propagation of before mentioned vines and the area covered by these vines.  The data concerns the vine types, degree of specialisation of vine-grower holdings, main varieties of grapes and age of plants. Some indicators are collected at national level, others a NUTS2 level.  The data are extracted from the vineyard register. The Member States, which have more than 500 ha of vines for other purpose than table grape production need to collect the data.

2.2. Classification system

The classification system used in the vineyard data has several dimensions:  type of vineyards, degree of specialisation of the holding, main varieties (> 500 ha t national level), age of plants and size classes of holdings. More information can be found in the Handbook.

2.3. Coverage - sector

Growing of grapes for other purposes than table grapes (mainly for wine, juice, raisins) (part of NACE rev.  2 classification of A01.21: growing of grapes) and plant propagation for vines (part of NACE rev.  2 classification of A01.30: plant propagation).

2.4. Statistical concepts and definitions

Statistical characteristics of observations
Is there a national legislation covering structural vineyrd statistics? YES
Name of the legislation

Decree law No 176/2015 of 25 August 2015

If yes, provide a link

https://dre.pt/home/-/dre/70095702/details/maximized?p_auth=kP4xu1Wr

Scope and coverage of the legislation

Lays down the rules for the scheme of authorizations for vine plantings in accordance with Regulation (EU) No 1308/2013 of the European Parliament and of the Council of 17 December 2013 on the common organization of the markets in wine agricultural products.

Responsable organisation for the legislation

Instituto da Vinha e do Vinho, I.P.

Precision requirements 

Not applicable (Vineyard register is exhaustive for target the population)

Does the national legal frame foresee the use of the vineyard register?  YES
2.5. Statistical unit

Number of holdings growing vines intended to produce grapes for other purposes than table grapes or growing plants for vegetative propagation of before mentioned vines and the area covered by these vines in hectares.

2.6. Statistical population

All holdings growing vines intended to produce grapes for other purposes than table grapes or growing plants for vegetative propagation of before mentioned vines, having an area bigger than 0.1 hectares registered in the vineyard register. The data collection is limited to the countries having a bigger than 500 ha area of vines grown for other purposes than table grapes.

2.7. Reference area

The reference area is mainland Portugal (NUTS I: Continental Portugal)

2.8. Coverage - Time

When was the first (regular) structural vineyard survey / data collection organised?

1989

Frequency of the data collection (if there was one) before 1979 or before EU membership?
If not regularly, in which years the vineyards have been surveyed ?

1989 and 1999

2.9. Base period

Not applicable


3. Statistical processing Top

See following items.

3.1. Source data

Is the register maintained at national or regional level? National                                
  Register 1 Register 2 Register 3 Register 4 Register 5 Register 6 Register 7 Register 8 Register 9 Register 10 Register 11 Register 12 Register 13 Register 14 Register 15 Register 16 Register 17
Name of the register(s)

Vineyard Register

Data owner (organisation)

Instituto da Vinha e do Vinho, I.P.

Contact information of the register authority (email and phone number)

Frederico Falcão

presidencia@ivv.min-agricultura.pt

+ 351 213 506 700

Legal basis

Decree Law No 66/2012 of 16 March 2012

Does the register contain parcel level data? YES
Are the parcels belonging to the same holder grouped under the same holding-id in the register? YES
Is the holding geo-referenced with co-ordinates? Yes, at parcel level
How is the vineyard holding identified in the register? Unique ID of the holder
Were all variables taken from vineyard register? YES
If no, which variables were not taken from the register?
Why were they not taken from the register?
For what purpose the ancillary data sources were used?
If other, which was the purpose?


Were other ancillary data sources used? NO  
If yes, which ones? Data source  Type of data source
Name of the data source 1
Name of the data source 2
Name of the data source 3


Additional comments

3.2. Frequency of data collection

The EU-level vineyard data collection is done every 5 years under Regulation (EU) 1337/2011. The first data collection takes place 2015. From 1979 until 2009 there was a data collection done every 10 years (basic data) and a smaller annual survey yearly (Council Regulation (EEC) No 357/79 on statistical surveys under vines).

Have you done any national data collections on the structure of vineyards since the 2009 EU-level data collection and before the 2015 EU-level collections? NO
If yes, in which years were they implemented?


Additional comments

3.3. Data collection

How easy was it  to get access to the vineyard register data (administrative access)?  
The data provider has direct constant access to the vineyard register
Access was granted upon a simple request
Access was granted after some negotiations
Access was granted after lenthy negotiations 
Access was not granted
Were the data from the vineyard register integrated into a statistical holding register? NO
If not, what were the reasons for not doing that?  
There was no need for such an operation
It was not technically possible because of lack of common identifier
It was not feasible due to data protection issues
It was considered too expensive
Other reasons


Additional comments

3.4. Data validation

Which kind of data validation measures are in place? Automatic
What do they target?  
Unit completeness
Item completeness
Valid value
Time series ranges (outlier detection)
Relational checks between characteristics
Arithmetic calculations (e.g. correctness of aggregates)
Others
Is the data cross-validated against another dataset? NO
If yes, which dataset?  
Previous results of vineyard statistics
Annual crop statistics area data
FSS data 
Other dataset


Additional comments

3.5. Data compilation

Not available.

3.6. Adjustment

Not applicable.


4. Quality management Top
4.1. Quality assurance

Is there a quality management process in place for vineyard statistics? YES
If yes, what are the components?

Wine production and vineyard surface

Was the authority responsible for the vineyard register involved in the quality assurance of the vineyard data? YES
If yes, which data quality improvement actions were proposed to be done to the vineyard register?  
Improvement of coverage of the register (elimination of over-coverage)
Improvement of the coverage of the register (elimination of under-coverage)
Elimination of multiple listings
More frequent updates
Inclusion of new characteristics in the register
Improving the identification of the holding
Other improvement actions

Reduce the number of parcels belonging to unknown holder which currently represents in some vineyard regions an high percentage of total surface;

Integrate the vineyard register of the islands (Azores and Madeira) in the same system as in mainland in order to be used for statistical purposes;

Harmonize the vine type according statistical requirements;

Strengthen the validation rules;

Provide to stakeholders the vineyard register update procedures and the degree of such updating.

   
Is there a Quality Report available? NO
If yes, please provide a link
   
Has a peer-review been carried out for vineyard statistics? NO
If yes, which were the main conclusions?
What quality improvement measures are planned for the next 5 years?  
Improvement of the vineyard register
Improvement of data validation
Further automation
Quality Report
Peer review
Other


Additional comments

4.2. Quality management - assessment

   Grading  Comments
How would you describe the overall quality of the structural vineyard statistics?  Satisfactory
How would you describe the relevance of the structural vineyard statistics?  Good
How would you describe the accuracy of the structural vineyard statistics?  Satisfactory
How would you describe the comparability of the structural vineyard statistics with other agricultural statistics, e.g. FSS and Annual Crop Statistics?  Satisfactory
How would you describe the coherence (over time) of the structural vineyard statistics?  Satisfactory
How would you describe the coherence (across regions in your country) of the structural vineyard statistics?  Satisfactory
How would you describe the accessibility of the structural vineyard statistics?  Good
How would you describe the clarity of the structural vineyard statistics?  Good


Additional comments


5. Relevance Top

See following items

5.1. Relevance - User Needs

Is the structural vineyard data necessary at national level? YES
Does Regulation 1337/2011 meet the national structural vineyard data needs? YES
If not, did you add additional characteristics which are needed at national level added to the EU-level list of characteristics? NO
If yes, which ones?

Vineyard surface by region, by age of plantation, by holdings, by varieties and by vine type (PDO, PGI, table wine)

Are there further known unmet user needs? NO
If yes, describe the unmet needs


Additional comments

5.2. Relevance - User Satisfaction

Has a user satisfaction survey been done? NO
If yes, how satisfied were the users?


Additional comments

5.3. Completeness

Is the vineyard data set complete? NO
If not, which characteristics are missing?

The vineyard register ensures the management of the potential under Regulation 1308/2013, in particular in the issue of planting authorizations for wine production. However, other production destinations, since they are outside the authorization regime, may not be correctly recorded. In addition to that, there is also the issue of the missing wine growers from Azores and Madeira.


Are all main varieties (> 500ha at natioanl level) listed by name in Table 4? YES  
If not, give the name and area of the main varieties included in class other main red grape varieties Name Area (ha) 
Variety 1
Variety 2
Variety 3
Variety 4
Variety 5
Variety 6
Variety 7
Variety 8
Variety 9
Variety 10
If not, give the name and area of the main varieties included in class other main white grape varieties Name Area (ha) 
Variety 1
Variety 2
Variety 3
Variety 4
Variety 5
Variety 6
Variety 7
Variety 8
Variety 9
Variety 10
If not, give the name and area of the main varieties included in class other main other colour  grape varieties Name Area (ha) 
Variety 1
Variety 2
Variety 3
Variety 4
Variety 5
Variety 6
Variety 7
Variety 8
Variety 9
Variety 10


Additional comments

5.3.1. Data completeness - rate

Not available.


6. Accuracy and reliability Top
6.1. Accuracy - overall

How good is the accuracy of the vineyard statistics? Satisfactory
What are the main factors lowering the accuracy? Coverage errors
If others, which ones?

Misclassification of some characteristics the vine parcel in the vineyard register – Grape Varieties.


Additional comments

6.2. Sampling error

Not available

6.2.1. Sampling error - indicators

Not available

6.3. Non-sampling error

See following items.

6.3.1. Coverage error

In the context of vineyard data collection the non-sampling errors are linked to the quality of the vineyard register

Under coverage

Does the vineyard register include all wine growers of the country? NO
If not, which kinds of wine growers are not included?

The wine growers from Azores and Madeira

How many percent of the total number of wine growers are not included?

1,5%

How big part of the vineyard area is not included?

2,760 ha

Impact of under coverage on the data quality Moderate


Over coverage

Does the vineyard register include holdings which are not any more active wine growers? NO
If yes, how many years does an inactive holding stay in the register?
Are former wine grower holdings, which haven't harvested the grapes for more than 7 years, part of the vineyard data collection? NO
Impact of over coverage on the data quality Moderate


Multiple listing errors

Number of farms listed in the register several times? Moderate
Impact of multiple listings on the data quality Moderate


Misclassification

Does the misclassification of units or characteristics have an impact on the data quality? YES
If yes, to which extent?
Which characteristics are affected?  
Area
Number of holdings
Type of production
Size class
Degree of specialisation
Main varieties
Age class
   
Impact of misclassification on the data quality  Low
   
Degree of bias caused by coverage errors Low
What measures were taken to mitigate the impact of coverage errors?  
None
Ancillary data sources were used in parallel to the vineyard register
Statistical correction methods
Others

See previous coments

   
In case coverage errors were detected, was the authority responsible for the vineyard register notified? YES
Have actions been taken to improve the register? Not known


Additional comments

Improvements of the vineyard register through the establishment of protocols with associations representing the wine sector to accomplish updating work.

 

Other additional comments

Item 6.3.1. Under coverage - Impact of under coverage on the data quality: Moderate, because data for NUTS I level (Azores and Madeira) is not available.

Item 6.3.1. Over coverage - Does the vineyard register include holdings which are not any more active wine growers?: the vineyard register does not include holdings which are not any more active wine growers. However we have to bear in mind that in vineyard register there are some unknown holders.

Item 6.3.1. Over coverage - Are former wine grower holdings, which haven't harvested the grapes for more than 7 years, part of the vineyard data collection?: impossible to determine, since there are some unknown holders.

Item 6.3.1. Multiple listing errors - Number of farms listed in the register several times?: Only the unknown area is recorded as the same ID.

Item 6.3.1. Multiple listing errors - Impact of multiple listings on the data quality: There are approximately 59 thousand parcels and 19 thousand hectares.  To overcome this problem, PT has to consider each parcel as a holding. Therefore, the number of holdings is higher than would be expected.


6.3.2. Measurement error

Not available.

6.3.3. Non response error

In the context of vineyard data collection the non-response is understood as missing characteristics in the vineyard register

Were all characteristics mentioned in Regulation 1337/2011 Annex 2 present in the vineyard register? NO
If not, which were missing?

The vines producing material for vegetative propagation.

Were ancillary data sources used to fill in the gaps? NO
If yes, which one?


Additional comments

The Raisins area has no expression and the information about vegetative propagation must be analysed and evaluated for this purpose.

6.3.3.6. Unit non-response - rate

Not available.

6.3.3.7. Item non-response - rate

Not available.

6.3.4. Processing error

Not available.

6.3.4.1. Imputation - rate

Not available.

6.3.5. Model assumption error

Not available.

6.4. Seasonal adjustment

Not available.

6.5. Data revision - policy

Not available.

6.6. Data revision - practice

How many data revisions were done?

0

Why were the data revisions done?


Additional comments

6.6.4. Data revision - average size

Not available.


7. Timeliness and punctuality Top
7.1. Timeliness

  Register 1 Register 2 Register 3 Register 4 Register 5 Register 6 Register 7 Register 8 Register 9 Register 10 Register 11 Register 12 Register 13 Register 14 Register 15 Register 16 Register 17
Name of the register(s)

Vineyard Register

When were the data extracted from the vineyard register? 07/06/2016
When was the latest update of the vineyard register done before the data extraction? 04/04/2016
Update frequency of the register Continuous


Additional comments

7.1.1. Time lag - first result

Not available.

7.1.2. Time lag - final result

Not available.

7.2. Punctuality

Was the dataset delivered to Eurostat by the deadline (30 September 2016)? NO
In case not, how many days delay was there?   

150


Additional comments

7.2.4. Punctuality - delivery and publication

Not available.


8. Coherence and comparability Top
8.1. Comparability - geographical

Were there any differences in the definition of the characteristics between the national/regional data and those described in Regulation 1337/2011? YES
If yes, which definitions were different?

National level doesn’t include Azores and Madeira

How would you describe the impact of the differences in definitions for the data comparability at EU level? Very small


Additional comments

8.2. Comparability - over time

Was the national methodology used for compiling 2009 and 2015 structural vineyared data comparable?  Major differences
Were the definitions used for compiling 2009 and 2015 structural vineyared data comparable?  Major differences
Was the regional breakdown used for compiling 2009 and 2015 structural vineyared data comparable?  Same NUTS2 regions


Additional comments

8.3. Coherence - cross domain

With which other data sources the vineyard data have  been compared?  FSS
Other statistics

Crop statistics

Other registers

IACS

   
If no comparisons have been made, why not?
Result of the comparison with ACS Small differences
If differences were detected, to which characteristics are they linked ? Area by grape type
Description of the differences

PDO: +4%

PGI: +24%

NP: +48%

Result of the comparison with FSS Small differences
If differences were detected, to which characteristics are they linked ? Area by grape type
Description of the differences

PDO: +19%

PGI: +28%

NP: -20%

Other comparison results Major differences
If differences, please give a brief description of the results of this comparison.

IACS is not exhaustive, covers only the farmers under payment scheme


Additional comments

8.4. Coherence - sub annual and annual statistics

Not available.

8.5. Coherence - National Accounts

Not available.

8.6. Coherence - internal

Not available.


9. Accessibility and clarity Top

See following items

9.1. Dissemination format - News release

  Availability Links
News release  NO
9.2. Dissemination format - Publications

  Availability Links
Publications NO
Publications in English NO
9.3. Dissemination format - online database

  Availability Links
On-line database accessible to users  NO
Website NO
Free/against payment data access policy Against payment  
9.3.1. Data tables - consultations

Not available.

9.4. Dissemination format - microdata access

  Availability Links
Micro-data access for researchers  NO
9.5. Dissemination format - other

Not available.

9.6. Documentation on methodology

  Availability Links
Methodological report NO
Scientific publications NO
Definitions and classifications YES
9.7. Quality management - documentation

  Availability Links
Quality Report NO
Metadata NO
9.7.1. Metadata completeness - rate

Not available.

9.7.2. Metadata - consultations

Not available.


10. Cost and Burden Top
Restricted from publication


11. Confidentiality Top
Restricted from publication
11.1. Confidentiality - policy
Restricted from publication
11.2. Confidentiality - data treatment
Restricted from publication


12. Comment Top

Not applicable


Related metadata Top


Annexes Top