213 



locatjo m of polhitantt Qndiidhig ladio- m ic li d e s, hea^ metals, tanc hydroc«ri)oiig. and 



nttiwpnteiirial f!nnt<fn4n«nt^); Ai-immmiing the typn atirf mapfjtwiii^ nfHtiyff pfw ff flt; »^ fcff 



conditiaiis under wtddi tbey exist u a basU far assessing dieir potential to 



atmospheric or tBoestiial systems. WMiootdrisinfimnatim. DOwell-<BieaBdieseardiaiKi 



monitoring program in Alaska (gdtematiiieeg vlniniTriir can be sdegnatdydeagoed. 



UAF-Ecology 



PATHWAYS 



IbBre aze four impactant pathways for movemfsnt of nfio^iudides to die teciBstrial 

 systemt 



No. L The lichen -cariboQ- man or wolf (bear and scavenger) system. Indns 

 system atmoq^heric ftDout of pollntants aie seqoesled by fidiras. winch are piefeiEfldaEy 

 ooDsumed by cnibAa and rrir'^^ff in "'^"tp^ '^ c^p^*"!* fyv! ^mt^^f^'' »"^ ^t^n hy p^ryie 

 aulodierpiedatois. At each trophic level concenttaiion of polhoanttn die tisanes increases 

 dnunsticany. Humans are dien at lislcbecaosediey eat food diat can be enricfaed in die 

 poQutanL 



Biological processes socfa as dus not only fiODcamBpoIlatanis, bat also le- 

 fisfidbute dlBin fiom hot-gpots throng die mnveinent nf M iiq^gl« and tHrett Ae poEudlUt to 

 new svsieiiB. 



Thus. animBls win be die nu^or carrier of poOntants between die main eoosystoms, 

 avBi/itPcttirtoimif ial and mariufr-ieirestriaL 



No. 2. Transport to iBue&uIal systsms fim livcn/nie&ns and the maciue systevL 

 Ihe second system conoens de likely roles of diav»4)inls and inigtaiory water-fowl in 

 tzan^on of pollnnuts ftom marine beadles, and ddal basins ^i^ieaB diey aggregate and find 

 and ficom river and stream estoaries, vt^mre ^gB ate laid and yoong grow and matnie» to local 

 and remote sites where the biiris may release pdlntamstfaroagji defecation and deadi, or diey 

 m^ be taken by homers and piedators. Sea-tarrdatbatfeedatseaoaanmnberof ttopbic 

 levels in tiiB marine system freqpendy nest on difb that accnmolate large axnount of Uzd 



