1. TREMA Tree Management and Mapping software Raintop Computing - Oxford

2. What is TREMA? TREMA is database and analysis software that helps forest managers and researchers organise, analyse and publish their data efficiently and flexibly. TREMA is the tool for Forestry Botany Ecology Biodiversity assessment Conservation Environmental Impact assessment

3. Data you can store in TREMA TREMA has a core of standard fields. Users can add their own fields without restriction. The key ingredients of all TREMA databases are: Species information Place information Plot and other sample data Species, Common name, Family, Genus, subspecies, Volume equation, Species group, Minimum legal diameter, Habit, Latex colour, Buttresses, Crown width equation, Leaf shape, Conservation value, Timber value, Protection status, Commercial status, uses, and more … Habitat type Forest reserve forest type, plot map reference, plot manager/owner, soil type, climate zone, Ordination score, and more.. Plot number, Plot type, DBH, Girth, Plot area, Height, Stem form, Canopy score, Seed tree density, local rarity, Year last logged, annual increment, recruitment and mortality, barcode, Year last logged, Selection status, Log number, and more …

4. Plots and other sample types In TREMA, you can define many types of sample in a single database. Typical examples are: Forest inventory data Stock maps Permanent sample plots Botanical survey Biodiversity assessment

5. Managing species data TREMA has many tools to help handle the complexity of species names and uses in tropical forest Multiple local names Auto synonym updates Species linked volume equations Add your own species fields

6. A tool for forest inventory TREMA can handle any size, shape or layout of plot, as well as plotless samples for rapid biodiversity surveys Output Volume, Basal area, stem density tables at the touch of a button Define your own tree volume equations or use the standard ones provided Optional error statistics

7. Permanent Sample Plots TREMA’s inbuilt functions allow users to error check and analyse single and multiple PSP enumerations including increment, recruitment and mortality rates. Store data from multiple enumerations Error-checking is facilitated by inbuilt functions Calculate increment, mortality and other time-related statistics PSP mapping, for example, to display areas with higher mortality Grid / cell functions

8. Yield allocation The ability to plan and monitor the selection of specific trees within economically and ecologically viable limits is fundamental to sustainable selective logging activity Forest management increasingly requires timber yield to be allocated based on stock maps TREMA handles complex rules for this process Manual yield allocation is also possible

9. Biodiversity assessment The management of lists of species in different places is a basic TREMA skill, but you can do much more to prioritise conservation areas or assess biodiversity impact Rank species according to your own criteria – e.g. rarity Highlight hotspots in your area based on species scores Perform ordinations to show forest types in your data Facilitate objective EIAs Link to botanical voucher data

10. Mapping TREMA’s mapping functions provide all the map output most users require for tree plots and distribution maps, either directly or through links to ArcView. Trema has an internal interactive mapper and links to ArcView and other GIS systems Style-setting on forest maps can be automated, e.g. to give trees a symbol for the species, size by diameter and colour by commercial class Tree coordinates can be calculated from survey data

11. Stand tables Stand tables can be produced individually or in automated sequences The basic table categories are for Stems, Volume and Basal area Size class scheme, Volume equations, filters and Area settings can be adjusted Tables can also be restricted to a selected species group Results can be printed directly or exported to Excel or Word files

12. Adding data is easy TREMA has rapid data entry and editing facilities with functions familiar to users of Excel and Access. But, TREMA has many advantages over standard spreadsheets and databases: Intelligent dictionaries to speed up input of e.g. species names, volume equations, plot localities. Awareness of data structures common to typical forest/ plant databases Specialized sample/plot data checking functions

13. Flexible reporting Users can design their own simple or complex report formats and store these in the central TREMA reports library Reports can include graphics, for example species images and maps Data can be calculated for the report (e.g. total volume) or included from a linked table (e.g. Plant Family), even if the current data-file does not include this information. Reports can be printed directly from TREMA or sent to your word processor

14. The benefits of TREMA Efficient use and re- use of data Easy archival of all your data in one database Enter your data once for multiple outputs Simple and complex, pre-defined and custom analyses all made easy