Ecology - PLEASE NOTE THAT THE SIGN REPRESENTS 0.5 2 1...

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Nature of Mathematics
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Chapter 5 / Exercise 5
Nature of Mathematics
Smith
Expert Verified
PLEASE NOTE THAT THE SIGN, ‘’, REPRESENTS ‘0.5’ ..........................21. Population2HKALE 1990 Biology Paper I..........................................................................................................2HKALE 1990 Biology Paper I..........................................................................................................5HKALE 1992 Biology Paper I..........................................................................................................8HKALE 1994 Biology Paper I..........................................................................................................92. The ecosystem10HKALE 1989 Biology Paper I........................................................................................................10HKALE 1991 Biology Paper II.......................................................................................................14HKALE 1990 Biology Paper I........................................................................................................344. Man’s impact on the environment48HKALE 1989 Biology Paper II.......................................................................................................48HKALE 1990 Biology Paper II.......................................................................................................54HKALE 1989 Biology Paper I........................................................................................................64HKALE 1990 Biology Paper II.......................................................................................................71HKALE 1991 Biology Paper I........................................................................................................71HKALE 1991 Biology Paper II.......................................................................................................74HKALE 1997 Biology Paper II.....................................................................................................135HKALE 1998 Biology Paper II.....................................................................................................145HKALE 1998 Biology Paper II.....................................................................................................1481999(1)Q4....................................................................................................................................1501999(1)Q10..................................................................................................................................1501999(1)Q11..................................................................................................................................1501999(2)Q8....................................................................................................................................1501999(2)Q10..................................................................................................................................150HKALE 1990 Biology Paper II.....................................................................................................151HKALE 1990 Biology Paper II.....................................................................................................152HKALE 1989 Biology Paper II.....................................................................................................153
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Nature of Mathematics
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Chapter 5 / Exercise 5
Nature of Mathematics
Smith
Expert Verified
Please note that the sign, ‘’, represents ‘0.51. PopulationHKALE 1990 Biology Paper I9.Adult barnacles are attached to rocks and they have a free-swimming larval stage. In a study of the factors determining the distribution of two species of barnacles (A and B) ondifferent parts of a shore, three experiments were conducted on three different rocky shores in Hong Kong with similar environmental conditions On rocky shore I, the population densities of both species in the upper and lower tidalzones were recorded throughout a year as shown in Graphs 1 and 2 respectively.On rocky shore II, rocks with similar densities of species B were obtained from the lowertidal zone in May and transplanted to the upper tidal zone (Graph 3) as well as to a tidal pool also in the upper tidal zone (Graph 4).On rocky shore III, all individuals of species B were removed from the lower tidal zone in January and any newly settled individuals of species B were also removed every month thereafter (Graph 5).(a)On rocky shore I, which species dominates the upper shore and which dominates the lower shore ?(1 mark)(b)Describe and explain the changes in population density of species A between February and June in the upper tidal zone of rocky shore I.(4 marks)(c)With reference to the data given, identify with reasons the factor that may limit the distribution of species B in the upper tidal zone.(3 marks)(d)With reference to the data given, identify with reasons the factor that may limit the abundance of species A in the lower tidal zone.(3 marks)(e)With reference to the data given, explain what you would expect to happen to species B if all species A were removed from the upper tidal zone.(4 marks):

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