| Popis: |
The beach litter survey of the selected beaches of Tamilnadu viz. Marina, (lat 13°055’N and long 80°28’E), Besant nagar (lat 12°99’N, long 80°27E) and Thiruvanmiyur (lat 12°97’N and long 80°26´E) were done in the year 2014. Beach litter survey was done mainly to quantify as well as to know the distribution pattern of different types of litter in all the selected beaches surveyed. The different types of litters surveyed in the year 2014 from Jan-Dec includes nylon/ HDP ropes/fishnet pieces (A), plastics covers, sachets, containers of creams, oil, ointments(B), chappals, foot wear (other than leather items)(C), glass bottles, electric bulbs, CFL bulbs (source of Hg) (D), waste (TV, Computer hard- wares, mobile phone handsets charges)(E) and Thermo col, PUF insulators of AC/Fridge, Styrofoam, etc. (F). Among the total litter distribution item C, chappals, footwear (other than leather items) is the highest (4000g/m2) followed by item B, plastics covers, sachets containers of creams, ointments, oil, (2525 g/m2), item F, thermocol, PUF insulators of AC/Fridge, stryrofoam, (1310g/m2), item D, glass bottles, electric bulbs, CFL bulbs (sources of Hg), (1125g/m2) and item A, nylon, HDP ropes and fishnet pieces, 1075 g/m2. In Marina Beach, in post monsoon season (Jan’14 to Mar’14) the item C is more than in A followed by B,D,F and E in summer season(Apr’14 to June’14) the litter distribution is more in C followed by F, B, D, A & E. In pre monsoon season (July’14 to Sep’14) the item B is more followed by C, F, A, D and E in monsoon season, (Oct’ 14 to Dec’14) the item B is followed by F,C, A, E and D. In Besant nagar beach in post monsoon season, (Jan’14 to Mar’14) the item C is more followed by D, A, B, F and E in summer season (April’ 14 to June’14) the item C is more followed by B,F,A,D and E in pre monsoon season, the item B is more followed by C,F,A,D and E in monsoon season, the item F is followed by B, A, C, D and E. In Thiruvanmiyur beach in post monsoon season(Jan’14 to Mar’14) the item C is more followed by B, A, F, D and E, in summer season, (Apr’14 to June’ 14) the item B is more followed by C,F,A,D and E in pre monsoon season, (July’14 to Sep’14) the item B is more followed by F,A,D,C and E in monsoon season, (Oct’14 to Dec’14) the item D is more followed by B,C,F, A and E. In marina beach, the PCA analysis of the beach litter for 12 consecutive months showed that the 2 components extracted had a variance of 49.02% with an eigen value of 2.45 and 25.63%, cumulative variance of 74.65% with an eigen value of 1.28. In Besant nagar beach, the PCA analysis showed that the 2 components extracted had a variance of 43.51% with an eigen value of 2.18 and 32.73% with an eigen value of 1.64 and the cumulative variance of 76.23%. In Thiruvanmiyur beach, the 2 PCA components extracted had a variance of 55.51% with an eigen value of 2.78 and 30.58% with an eigen value of 1.53 and the cumulative variance of 86.09%. |
