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| Titel: |
Comparative Limnology of Some Lakes in Interior Alaska |
| Auteur: |
LaPerriere, Jacqueline D. Simpson, Thomas D. Jones, John R. |
| Verschenen in: |
Lake and reservoir management |
| Paginering: | Jaargang 19 (2003) nr. 2 pagina's 122-132 |
| Jaar: |
2003-06-01 |
| Inhoud: |
Fifteen lakes in Interior Alaska (from about 62°N to 64°N and 142°W to 151°W) were sampled on three occasions during the open water season (mid-May to early September) in either 1993 or 1994. Lakes varied in elevation from 218 to 1124 m, in area from 33 to 6303 ha and in maximum depth from 4 to 49 m. Deep lakes thermally stratified during summer with lake cooling and destratification in some by August. Lakes with mean depth of <5 m were polymictic during summer. Anoxia was measured at depth in the most fertile lakes, and metalimnetic oxygen maxima in several lakes were associated with conditions favoring sub-surface algal peaks. There were near equal numbers of clear and stained lakes. One lake was eutrophic and the others were either oligo-or mesotrophic. About half the lakes had TN:TP < 11 by weight, indicating a regional potential for N-limitation. Among Interior lakes, salinity, as measured by conductivity and alkalinity was correlated with TN and TP which fits with the long-recognized pattern between parent geology and nutrients. These data are compared with previous lake studies in the Interior. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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