Statistical Terms Glossary

The tendency for population growth to continue beyond the time that replacement-level fertility has been achieved because of a relatively high concentration of people in the childbearing years.

All persons aged 15 years and over.

Explicit or implicit measures instituted by a government to influence population size, growth, distribution, or composition.

Estimates of total size or composition of populations in the future.

The population pyramid represents the breakdown of the population by gender and age at a given point in time. It consists of two histograms, one for each gender (by convention, men on the left and women on the right) where the numbers are shown horizontally and the ages vertically.

A governmental system for collecting data on the demographic, social and economic characteristics of the whole population or part of them and recording them on an ongoing basis.

Number of males per 100 females in the population.

De facto population in a country as of 1 July of the year indicated.

A Population Vulnerability Analysis (PVA) is an assessment of the probability of extinction of a population or species

The number of all employed and unemployed persons (including those seeking work for the first time). It covers employers; self-employed workers; salaried employees; wage earners; unpaid workers assisting in a family or farm or business operation; members of producers’ cooperatives; and members of the armed forces. The economically active population is also called the labour force.

Part of the economically active population engaged in or seeking work in agriculture, hunting, fishing or forestry (agricultural labour force). The economically active population refers to the number of all employed and unemployed persons (including those seeking work for the first time). It covers employers, self-employed workers, salaried employees, wage earners, unpaid workers assisting in a family or farm or business operation, members of producers’ cooperatives, and members of the armed forces. The economically active population is also called the labour force.

According to the FAO definition, the total population usually refers to the presenting-area (de facto) population, which includes all persons physically present within the present geographical boundaries of countries at the mid-point of the reference period.

Usually the urban area is defined and the remainder of the total population is defined as rural. In practice, the criteria adopted for distinguishing between urban and rural areas vary from country to country. However, these criteria can be roughly divided into three major groups: classification of localities of a certain size as urban; classification of administrative centres of minor civil divisions as urban; and classification of centres of minor civil divisions on a chosen criterion which may include type of local government, number of inhabitants or proportion of population engaged in agriculture. Thus, the urban and rural population estimates in this domain are based on the varying national definitions of urban areas.

A place for vessels to moor and to load or unload cargo or to disembark or embark passengers to or from vessels, usually directly to a pier.

Port accessibility is defined by the following characteristics:
- Maximum length of vessel which can be accommodated at the port (metres);
- Maximum draft of vessel which can be accommodated at the port (metres);
- Port approach width and depth above low water (metres);
- Entrance channel width and depth above low water (metres);
- Tidal window in hours for which vessels of maximum draft can enter and leave port;
- Height restrictions above high water (metres) (reflecting bridges);
- Tidal range (metres).

Port accessibility is defi ned by the following characteristics: (a)Maximum length of vessel which can be accommodated at the port - metres(b) Maximum draft of vessel which can be accommodated at the port - metres (c) Port approach width and depth above low water- metres (d) Entrance channel width and depth above low water - metres (e) Tidal window in hours for which vessels of maximum draft can enter and leave port (f) Height restrictions above high water - metres (reflecting bridges) (g)Tidal range – metres

A port authority ensures the effective, safe, secure and efficient handling of shipping within the port and the offshore approaches to it and may take care of the development, construction, management and operation of the port and its industrial area if any.

A ship makes a port call when it anchors or berths to load and/or unload cargo, to embark and/or disembark passengers or to facilitate excursions by passengers.

An estimated monetary value reflecting the current stock of physical port infrastructure assets.

Facilities provided within the port for connections to other modes of transport:
- Maritime shipping;
- Passenger railway;
- Freight railway;
- Motorway;
- Airport.

A country to whose ports fishing vessels come.

Number of cranes available in ports by lifting capacity. Possible classes of lifting capacity are as follows:
- 10 tonnes or less;
- Greater than 10 tonnes and up to 20 tonnes;
- Greater than 20 tonnes and up to 40 tonnes;
- Greater than 40 tonnes.

Number of cranes available in ports by type:
- Mobile container cranes;
- Other container cranes;
- Other cranes.

An enterprise carrying out in one or more places the provision of port services as its main activity according to value added. Pleasure port enterprises are excluded.

Availability of short sea shipping and distance to hinterland links from nearest port entrance in kms:
- Short sea shipping;
- Passenger railhead;
- Freight railhead;
- Motorway access;
- Inland waterway connections;
- Airport.

- Total port land area (m2);
- Crude oil and petroleum products storage areas (m2);
- Other bulk storage and stacking areas (m2);
- Container stacking areas (in m2 and TEU);
- Other areas (m2);
- Roads (m);
- Rail track (m);
- Passenger terminals (number of vessels accommodated per terminal, terminal capacity).

Availability or not of navigation aids and services at ports and in the approach channels:
- Pilotage services;
- Lights and lighthouses;
- Radar and radio beacons;
- Vessel Traffic System (VTS) within port and coastal navigation services around port;
- Tugs for in-port maneuvering (number);
- Escort tugs for tankers (number);
- Bunkering facilities;
- Mooring services.