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HABITAT GROUP

This group of fields describes the physical and environmental characteristics of the locality in which the plant was collected as opposed to the characteristics of the plant itself.


Habitat

Transfer code: hab

TDWG Short name: HABITAT

Description: Description of the habitat of the accession, including the geology and soil type in which the plant grows, as well as the associated species of the community from which this accession was collected.

Relevant standards: ITF

Domain/Range/Values: Alphanumeric; free text, any meaningful habitat descriptions.

Comments: This information is usually provided by the original collector.

This is an aggregate field, containing information that could be divided among the following fields. In fact, many herbaria have entries for these segregate fields in their field note books.

Since there are no universally accepted schemes for the classification of soils, vegetation, landforms and substrates that modern collectors can be expected to follow, the information in this field is regarded as free text. Furthermore, to translate a collector's historical descriptions into modern schemes is prone to error and misinterpretation.

Institutions with entirely or partially codified habitat data will have to expand the codes prior to interchange.

Institutions with habitat data (as defined here) stored in discrete fields must combine these fields prior to interchange if they are to use this field in the transfer format.


Topography

Transfer code: top

TDWG Short name: GEOLOGY (?)

Description: A description of the topography of the habitat from which the specimen was collected.

Domain/Range/Values: Alphanumeric; free text.

Comments: Refer Comments under Habitat.

Information in this field includes landform, situation, etc.


Aspect

Transfer code: asp

Description: The abbreviated aspect or outlook of the site from which the plant was collected

Domain/Range/Values: Alpha; any valid directional or aspect abbreviation.

Values in Field Meaning
N North
S South
E East
W West
also NE, SE, NW, SW, NNE, ENE, ESE, SSE, NNW, WNW, WSW, SSW.
also Open Used to refer to a plain or ridge crest
Closed Used to refer to a valley or ravine

Comments: Refer Comments under Habitat.


Substrate

Transfer code: sub

Description: The substrate or parent rock material in the habitat from which the specimen was collected.

Domain/Range/Values: Alpha; free text.

Comments: Refer Comments under Habitat.

This field should not include descriptions of soil type.


Soil Type

Transfer code: soil

TDWG Short name: SOILS

Description: Description of the surface soil type from which the specimen was collected.

Domain/Range/Values: Alphanumeric; free text.

Comments: Refer Comments under Habitat.

In many cases it is difficult to separate soil and substrate information from a habitat description.


Vegetation

Transfer code: veg

TDWG Short name: VEGETATION

Description: Description of the vegetation from which the specimen was collected.

Domain/Range/Values: Alphanumeric; free text.

Comments: Refer Comments under Habitat.

The contents of this field are sometime inseparable from the contents of the next field, Associated Species.


Associated Species

Transfer code: asspp

Description: A list of associated species found in the same habitat as the collected specimen.

Domain/Range/Values: Alpha; free text, scientific names (with standard Capitalisation) or non-scientific names.

Comments: In most herbaria, this field is combined with the previous field as part of the vegetation description; with historical material it is sometimes difficult to separate these two fields.

Refer Comments under Habitat and Vegetation.