NITROGEN AND CARBON ISOTOPE RATIOS IN SEABIRD ROOKERIES AND THEIR ECOLOGICAL IMPLICATIONS
NITROGEN AND CARBON ISOTOPE RATIOS IN SEABIRD ROOKERIES AND THEIR ECOLOGICAL IMPLICATIONS
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DOI：
10.2307/1940432
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发表时间：
1988-04-01
期刊：
影响因子：
4.8
通讯作者：
WADA, E
中科院分区：
文献类型：
--
作者：
MIZUTANI, H;WADA, E
对海鸥和企鹅栖息地周围的各种样本进行了氮和碳同位素比率的检测。结果表明，鸟类繁殖活动中有机氮的输入、土壤中有机氮的有氧分解以及生成的氨的挥发，强烈地控制了两个鸟巢的氮素流动。鸟巢中的植物、动物和土壤似乎依赖于由此提供的氮素。在企鹅栖息地，土壤有机碳也来自繁殖活动。然而，海鸥输入的大量有机碳似乎很快就通过呼吸从海鸥群中逃脱了。它对土壤有机碳的影响很小；那里的有机碳的主要来源似乎来自高等植物。根据同位素数据推断了海鸟栖息地中物质流动的主要途径。对稳定同位素的研究应该使我们能够为其他生态系统绘制类似的图景；在频繁访问不切实际的地方，这一研究尤其有用。
Various samples around gull and penguin rookeries were examined for nitrogen and carbon isotope ratios. The results showed that input of organic nitrogen from avian breeding activity, followed by its aerobic decomposition in soil and by volatilization of the resultant ammonia, strongly dominated nitrogen flow in both rookeries. Plants, animals, and soils in the rookeries appeared dependent on the nitrogen thus provided. In the penguin rookery, soil organic carbon was also derived from breeding activity. A large input of organic carbon by gulls, however, appeared to have quickly escaped from the gull rookery through respiration. It had little effect on the soil organic carbon; the main source of organic carbon there seemed to have come from higher plants. Major pathways of material flow in the seabird rookeries were deduced from the isotopic data. Study of stable isotopes should enable us to draw similar pictures for other ecosystems; it is particularly useful in places where frequent visits are impractical.