Öz
Delamere Lake is a small, shallow, acid lake (pH 4.5) on the edge of a coniferous forest in Cheshire, England. Its surface water catchment is 19 ha with water retention period of 53 weeks. The lake showed high total nutrients (total nitrogen, mean 2.2 standard error of the mean 0.1 mg L-1; total phosphorus, 200 14 μg L-1) and humic acid content (water colour, minimum 40 mg Pt L-1) and very high phytoplankton biomass (chlorophyll a, 290 31 μg L-1). The soil of the catchment was sampled to test its contribution to chemical characteristics of the lake water. The pH of the soil was found to be very low (3.20). Dissolved organic carbon content of soil was positively correlated with NO3-N, SRP and NH4-N concentrations in the soil. The conifer-forested catchment was, therefore, suggested to be the main source maintaining low pH, high total nutrient concentrations and high humic content in the lake water.
Anahtar Kelimeler
Dissolved organic carbon; eutrophication; phosphorus; coniferous forest
Öz
Delamere Lake is a small, shallow, acid lake (pH 4.5) on the edge of a coniferous forest in Cheshire, England. Its surface water catchment is 19 ha with water retention period of 53 weeks. The lake showed high total nutrients (total nitrogen, mean 2.2 standard error of the mean 0.1 mg L-1; total phosphorus, 200 14 μg L-1) and humic acid content (water colour, minimum 40 mg Pt L-1) and very high phytoplankton biomass (chlorophyll a, 290 31 μg L-1). The soil of the catchment was sampled to test its contribution to chemical characteristics of the lake water. The pH of the soil was found to be very low (3.20). Dissolved organic carbon content of soil was positively correlated with NO3-N, SRP and NH4-N concentrations in the soil. The conifer-forested catchment was, therefore, suggested to be the main source maintaining low pH, high total nutrient concentrations and high humic content in the lake water.
Anahtar Kelimeler
Dissolved organic carbon; eutrophication; phosphorus; coniferous forest
Ayrıntılar
| Birincil Dil | Türkçe |
|---|---|
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 1 Nisan 2009 |
| Yayımlandığı Sayı | Yıl 2009 Cilt: 9 Sayı: 2 |