|Delivery Type||Delivery length / details|
|Lecture||2 x 1 hour lectures per week|
|Other||Field Work. 5 days|
|Assessment Type||Assessment length / details||Proportion|
|Semester Assessment||Practical Report: Submission of fieldwork portfolio||50%|
|Semester Exam||3 Hours Written examination||50%|
|Supplementary Assessment||3 Hours Written examination plus resubmission of failed fieldwork or an alternative||100%|
On completion of the module students should
- be familiar with the terms used in plant identification
- be able to write detailed field notes about the nature of plants within their habitats
- be confident in the field identification of higher plants
- appreciate current thinking about the nature of plant communities within landscapes
- be able to complete a community survey and analyse the resulting data
- be able to write a detailed scientific report based on a field survey.
The second section is concerned with changes in communities over time. They are not static, but change, often in apparently predictable ways. They may be directed by the sequence of species present (autogenic), or driven by environmental conditions that change over time (allogenic). The resource-ratio hypothesis has been suggested as the mechanism for "climax" vegetation, but multiple end points of change are evident within many areas.
Both human and natural phenomena may affect plant communities. Grazing animals may show a high incidence of specialisation in shaping the composition of plant committees while fire naturally causes biomass removal in many landscapes. Human use may represent simple biomass removal, as in hay regimes, alternatively, it may be selective removing particular species or particular groups of individuals (such as a size class) for a particular use, thereby affecting the community.
Finally, the description of plant communities and their distribution in space is discussed based on both numerical (ordination and classification) and descriptive phytosociological (represented by NVC) approaches.
The students will be expected to undertake a five-day field course to establish expertise in plant species identification in a range of contrasting Welsh habitats (e.g. sand dunes, hedgerow, mesotrophic grassland, and deciduous woodland). They will also be expected to complete detailed scientific illustrations of various species collected during the course, highlighting specific taxonomic characteristics used for identification. Information from identification at each location will be developed into surveys and interpreted according to the National Vegetation Classification System. During the final two days students will be divided into groups for completion of a small taxonomy / plant ecology project.
Reading ListRecommended Text
Begon, M., Harper, J.L. & Townsend, C.R. (1996) Ecology 3rd Oxford: Blackwell Science. Primo search Hansson, L., Fahrig, L. & Merriam, G. (1995) Mosaic landscapes and ecological processes London: Chapman & Hall. Primo search
This module is at CQFW Level 5