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首页> 外文期刊>Ocean & coastal management >Assessment of the vulnerability of coastal mangrove ecosystems in Mozambique
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Assessment of the vulnerability of coastal mangrove ecosystems in Mozambique

机译：莫桑比克沿海红树林生态系统脆弱性评估

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摘要

Mangrove forests are among the most productive ecosystems on Earth. However, there is still insufficient information available for strategic prediction of conservation and management intervention, particularly in the case of Mozambique. This country has the longest coastline and mangrove forests of Eastern Africa, but is prone to global climate hazards. Using recent field data and environmental parameters subjected to the Variance Inflation Factor (VIF) collinearity test (bioclimatic variables, slop, salinity, land cover, and elevation), we ran MaxEnt to model the distribution of mangrove forests based on occurrence data of the most emblematic and representative mangrove species in Mozambique (Avicennia marina and Rhizophora mucronata). Moreover, in order to understand which areas should be prioritized for management interventions on mangroves and costal dunes, an Exposure Index (EI) to climate hazards and erosion was compared with the potential distribution of these species. Our results showed that average wind speed of summer season, land surface elevation, Mean Diurnal Range, and saltwater exposure (salinity) were determinant on the distribution models of both species. The central coastal region of Mozambique (so-called swamp coast) presents the largest potentially suitable areas for mangroves species occurrence, having the highest levels of exposure. We also found that A. marina presents a higher EI than R. mucronata. The scarcity of studies concerning the central region of Mozambique; which was recently devastated by cyclone Idai (category four, 2019), which hit Mozambique and the neighbouring countries, reinforce the urgency for management intervention. The findings of this study should be used by managers and decision makers to promote best practices to safeguard lives and people's livelihoods and assets threatened by coastal climate hazards and anthropogenic impacts.
机译：红树林是地球上生产力最高的生态系统之一。但是，仍然没有足够的信息可用于战略性预测保护和管理干预，特别是在莫桑比克的情况下。这个国家拥有东非最长的海岸线和红树林，但容易受到全球气候的危害。利用最近的实地数据和经过方差膨胀因子（VIF）共线性测试的环境参数（生物气候变量，坡度，盐度，土地覆盖率和海拔），我们运行了M​​axEnt以基于最大的发生数据对红树林的分布进行建模。莫桑比克的象征性和代表性红树林物种（Avicennia滨海和Rhizophora mucronata）。此外，为了了解哪些区域应优先进行红树林和沿海沙丘的管理干预，将气候危害和侵蚀的暴露指数（EI）与这些物种的潜在分布进行了比较。我们的研究结果表明，夏季的平均风速，地表海拔，平均日程和盐水暴露（盐度）是这两种物种分布模型的决定因素。莫桑比克的中部沿海地区（所谓的沼泽海岸）是发生红树林物种的最大可能地区，其暴露水平最高。我们还发现，滨海曲霉比穆克罗纳酵母具有更高的EI。关于莫桑比克中部地区的研究匮乏;莫桑比克及其周边国家最近遭受飓风伊代（2019年第四类）的破坏，这加剧了管理干预的紧迫性。管理者和决策者应使用这项研究的结果，以推广最佳做法，以保护受到沿海气候危害和人为影响的人命和资产。

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  • 来源
    《Ocean & coastal management》 |2020年第5期|105145.1-105145.12|共12页
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  • 作者单位

    Univ Lisbon ISA Linking Landscape Environm Agr & Food LEAF P-1349017 Lisbon Portugal|Univ Nova Lisboa Nova Sch Business & Econ Campus Carcavelos P-2775405 Lisbon Portugal|Licungo Univ Fac Sci & Technol Dept Earth Sci & Environm POB 2025 Beira Mozambique;

    Eduardo Mondlane Univ Dept Biol Sci POB 257 Maputo Mozambique;

    Univ Lisbon ISA Linking Landscape Environm Agr & Food LEAF P-1349017 Lisbon Portugal|Univ Lisbon ISA Forest Res Ctr CEF P-1349017 Lisbon Portugal;

    Univ Nova Lisboa NOVA IMS Campus Campolide P-1070312 Lisbon Portugal;

    Univ Lisbon ISA Linking Landscape Environm Agr & Food LEAF P-1349017 Lisbon Portugal|Univ Lisbon Fac Ciencias CE3c P-1749016 Lisbon Portugal;

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  • 正文语种 eng
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  • 关键词

    Eastern Africa; Mangrove trees; MaxEnt; Coastal habitats; Exposure index;

    机译：东非;红树林树木;MaxEnt;沿海生境;接触指数;

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