Constancy Table

1) In our second practical, we were given a vegetation table that was based on our data collected from the Garryland field trip. The table had all 131 relevés from Garryland and we had to decide where the main groups of species occurred. We had to divide the relevés into eight groups by drawing vertical lines on the sheet to separate the blocks of relevés. Once this was completed, we then had to use Microsoft Excel and once again draw vertical lines on our vegetation table in the same locations that we drew them on our A3 sheet. After this was completed, we began to construct a constancy table.

Group 1 was the smallest group on the constancy table as it only had two species: Globular algae and Filamentous algae. These two species of algae are

This species also lives beside lakes and ponds. The Salix sp. (willow tree) also thrives in wetland habitats and prefers moist soils in a temperate climate. It mainly grows beside lakes and ponds also.

Group 5 were a list of species that are common in grassland habitats. Species such as Poa pratensis (common meadow grass), Taratacum officinate (common dandelion) and Bellis perennis (common daisy) are very common in grassland habitats. Grassland habitats have no trees.

Group 6 were from wet grassland habitats with common species such as Agrostis stolonifera (creeping bent), Potebtilla anserine (silverweed) and Leontodan anserine (autumn hawkbit). Wet grassland habitats are mainly in low/high lying regions and the soil is usually waterlogged. This type of habitat also has frequent flooding.

Group 7 was a wet-willow-alder-ash woodland that had common species such as Fraxinus excelsior (ash tree), Salix atrocinerea (grey willow) and Rubus fruticosus agg (bramble). This habitat has waterlogged soils and is common near lakes and fens. These three species were also found on our Garryland field