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首页> 外文期刊>EcoHealth >Anthropogenic ecological change and impacts on mosquito breeding and control strategies in salt-marshes, northern territory, Australia
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Anthropogenic ecological change and impacts on mosquito breeding and control strategies in salt-marshes, northern territory, Australia

机译：澳大利亚北部地区盐沼的人为生态变化及其对蚊子繁殖和控制策略的影响

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Darwin, in the tropical north of Australia, is subject to high numbers of mosquitoes and several mosquito-borne diseases. Many of Darwin's residential areas were built in close proximity to tidally influenced swamps, where long-term storm-water run-off from nearby residences into these swamps has led to anthropogenic induced ecological change. When natural wet-dry cycles were disrupted, bare mud-flats and mangroves were transformed into perennial fresh to brackish-water reed swamps. Reed swamps provided yearround breeding habitat for many mosquito species, such that mosquito abundance was less predictable and seasonally dependent, but constant and often occurring in plague proportions. Drainage channels were constructed throughout the wetlands to reduce pooled water during dry-season months. This study assesses the impact of drainage interventions on vegetation and mosquito ecology in three salt-marshes in the Darwin area. Findings revealed a universal decline in dry-season mosquito abundance in each wetland system. However, some mosquito species increased in abundance during wet-season months. Due to the high expense and potentially detrimental environmental impacts of ecosystem and non-target species disturbance, large-scale modifications such as these are sparingly undertaken. However, our results indicate that some large scale environmental modification can assist the process of wetland restoration, as appears to be the case for these salt marsh systems. Drainage in all three systems has been restored to closer to their original salt-marsh ecosystems, while reducing mosquito abundances, thereby potentially lowering the risk of vector-borne disease transmission and mosquito pest biting problems.
机译：在澳大利亚北部热带地区，达尔文市遭受大量蚊子和几种蚊媒疾病的侵袭。达尔文的许多居住区都建在靠近潮汐影响的沼泽附近，那里长期的雨水从附近的住宅流入这些沼泽，导致人为的生态变化。当自然的干湿循环中断时，裸露的泥滩和红树林变成了多年生的淡水到微咸水的芦苇沼泽。芦苇沼泽为许多蚊种提供了全年繁殖的栖息地，因此蚊子的丰度较难预测且季节性依赖，但恒定且经常以鼠疫比例发生。整个湿地都建有排水通道，以减少干旱季节的积水。这项研究评估了达尔文地区三个盐沼中排水干预对植被和蚊子生态的影响。调查结果表明，每个湿地系统中的旱季蚊子数量普遍下降。但是，一些蚊子在雨季期间数量增加。由于生态系统和非目标物种干扰的高额费用和可能对环境造成的不利影响，因此很少进行诸如此类的大规模修改。但是，我们的结果表明，大规模的环境改造可以帮助湿地恢复，就像这些盐沼系统的情况一样。这三个系统的排水系统都已恢复到更接近其原始盐沼生态系统的水平，同时减少了蚊子的数量，从而有可能降低媒介传播的疾病传播和蚊虫叮咬问题的风险。

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