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首页> 外文期刊>Estuarine Coastal and Shelf Science >Stable nitrogen isotopes in the turtle grass Thalassia testudinum from the Mexican Caribbean: Implications of anthropogenic development
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Stable nitrogen isotopes in the turtle grass Thalassia testudinum from the Mexican Caribbean: Implications of anthropogenic development

机译：墨西哥加勒比海龟草Tha草中的稳定氮同位素：人为发育的意义

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摘要

Nutrient inputs associated with population growth threaten the integrity of coastal ecosystems. To assess the rapid increase in tourism, we compared the δ~(15)N from Thalassia testudinum collected at sites with different levels of tourism development to detect the N inputs of wastewater discharge (WD) along the coast of Quintana Roo. The contributions of nitrogen enriched in ~(15)N are directly related to the increase of WD inputs in areas of tourism development (Nichupte Lagoon in Cancun) and decreased toward Bahia Akumal and Tulum. The δ~(15)N from T. testudinum was significantly lower at Mahahual and Puerto Morelos. In areas of the lowest development and with tourist activity restricted, such as the Yum Balam Reserve and Sian Ka'an Biosphere Reserve, the δ~(15)N values were relatively enriched compared to Mahahual and Puerto Morelos. Therefore, Puerto Morelos and Mahahual may be used for baseline isotopic monitoring where tourist activities are growing and can lead to environmental pressure on the reef lagoon ecosystem. The anthropogenic N input has the potential to impact, both environmentally and economically, the seagrass meadows and the coral reefs along the coast of Quintana Roo and the Caribbean.
机译：与人口增长有关的营养投入威胁着沿海生态系统的完整性。为了评估旅游业的快速增长，我们比较了从旅游业发展水平不同的地点的地中海藻中提取的δ〜（15）N，以检测金塔纳罗奥州海岸沿岸的废水排放（WD）的氮输入。 〜（15）N中富集的氮的贡献与旅游业开发区域（坎昆的Nichupte泻湖）的WD投入增加直接相关，而向Bahia Akumal和Tulum减少。在Mahahual和从莫雷洛斯港（Puerto Morelos），来自T. testudinum的δ〜（15）N明显较低。在百慕达（Yum Balam）保护区和Sian Ka'an生物圈保护区等发展最快，旅游活动受限的地区，与Mahahual和从莫雷洛斯港相比，δ〜（15）N值相对丰富。因此，莫雷洛斯港和Mahahual港可能被用于基线同位素监测，那里的旅游活动正在增加，并可能对礁湖生态系统造成环境压力。人为氮输入有可能在环境和经济方面影响金塔纳罗奥州海岸和加勒比海地区的海草草甸和珊瑚礁。

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