decision making on coastal management Flashcards
how to judge the impact
SEEP (social, economic, environmental, political)
what should u always include when judging
-time and area scale
whats coastal squeeze
-a sea defence preventing high water moving inland and the impact of sea level rise
-(meaning the lower water mark is moving inwards)
-beach becomes smaller/squeezed
how much can maram grass stop of sand every year
-about 1m
-but needs replanting as it needs fresh sand to grow
how do fences around sand dunes support their growth
-slows wind down by 50%
-increased deposition
what should u consider when managing the coast
-engineering feasibility
-political, social, economic reasons
-environmental sensitivity
-land use and value
-impacts on coastal processes
what are some political, social and economic reasons for managing the coast
-agriculture is key employer
-tourism is key industry and contribute to local economy
-politically, costs have to be acceptable by government
what are some impacts on coastal processes due to coastal management
-do nothing- coastal processes continue uninterrupted
-holding the line- erosion is prevented
-or defended areas
example of do nothing
-Allowing Flamborough head on the holderness coastline to continue to erode
-sediment can be supplied to other parts of the coastline
example of land use and value
-much of the holderness coastline consists of agricultural land
how to asses importance of agricultural land
-its graded 1-5
-estimated that by 2025 approx 160 hectares of grade 3/4 land will be lost to erosion
example of environmental sensitivity
-Flamborough head and spurn head defined as heritage coasts
-hornsea mere is a SSSI
-Flamborough head is a special area of conservation
how is a cost benefit analysis done
-costs are forecast
-then compares with expected benefits/value of land saved (housing protected, savings in relocating people)
two types of cost and benefit analysis
(1) tangible
(2) intangible
whats intangible cost benefit analysis
costs may be difficult to asses but are important (the visual impact of a revetment e.g.)
whats tangible cost benefit analysis
costs and benefits are known and can be given a monetary value (building costs)
what is the EIA
environmental impact assessment
how do they do the EIA
-the existing environment is assessed
-proposed development drawn up
-potential impacts considered in relation to effects (2 important ones)
-then scored in a table
what are the effects that potential impacts may have
(1) natural environment (habitats, pollution, visual impact)
(2) human environment (QOL, design and local employment)
