Hypolimnetic Metabolism in Three Cape Cod Lakes
Hypolimnetic Metabolism in Three Cape Cod Lakes
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科德角三个湖的神经调节代谢
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发表时间：
1980
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通讯作者：
P. H. Rich
中科院分区：
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作者：
P. H. Rich
1976年夏季分层期间，研究了科德角3个封闭盆地、水壶湖的低氧赤字和二氧化碳增加。区域低酶02缺陷范围从低营养（鸥池和海瑟薇池）到明显中营养（马池）。区域低代谢溶解无机碳增量（假设好氧RQ = 0.85）范围较大，达到马池富营养化的边缘。2的吸收和溶解无机碳（DIC）的释放与到达低磷离子的光照量呈负相关。观察到DIC释放与吸入的比率(呼吸商？三个湖泊的低阴离子的RQ = co2 /02)从1.4（母马）到3.4（海鸥）不等，似乎与到达低阴离子的光量直接相关。因此，水下光线似乎比DIC释放更能抑制02的摄取。这增加了湖泊通过在光补偿深度或以下向厌氧光合作用提供电子而显著增加备用电子受体库存的可能性。
The hypolimnetic oxygen deficits and carbon dioxide increments in three closed-basin, kettle lakes on Cape Cod were examined during summer stratification in 1976. Areal hypolimnetic 02 deficits ranged from oligotrophic (Gull and Hathaway Ponds) to distinctly mesotrophic (Mares Pond). Areal hypolimnetic dissolved inorganic carbon increments (assuming aerobic RQ = 0.85) ranged higher, to borderline eutrophic for Mares Pond. Both 02 uptake and dissolved inorganic carbon (DIC) release were correlated inversely with the amount of light reaching the hypolimnion. The observed ratios of DIC released to 02 taken up (respiratory quotient? RQ = C02/02) in the hypolimnia of the three lakes varied from 1.4 (Mares) to 3.4 (Gull), and appeared to correlate directly with the amount of light reaching the hypolimnion. Thus, underwater light appears to suppress 02 uptake more than DIC release. This raises the possibility that lakes significantly augment their inventories of alternate electron acceptors by donating electrons to anaerobic photosynthesis at or below the light compensation depth.