洪水和沙尘暴对红海南部红树幼苗生长和存活的影响

IF 0.8 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
J. Abrogueña, Andrea Anton, Sau Pinn Woo, M. Baptista, C. Duarte, Syed Azher Hussain, M. Shoeb, M. Qurban
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引用次数: 1

摘要

红树林生长在热带和亚热带地区,包括恶劣的干旱地区。人们对沙漠环境条件如何影响红树林幼苗的生态知之甚少。本文在沙特阿拉伯红海南部海岸的一个自然林分对红树(Avicennia marina)幼苗进行了原位研究,目的是(1)估算和比较不同潮汐暴露的微生境对红树幼苗生长和存活的影响,(2)研究沙尘暴对红树幼苗生长和存活的影响。根据潮暴露情况,在低潮暴露区(Z1)、中潮暴露区(Z2)、高潮暴露区(Z3)和高潮暴露区(Z4)进行采样。对幼苗的垂直生长和死亡率以及所选环境变量进行了量化。结果表明:不同采样区幼苗生长速率差异显著,高潮区幼苗生长速率最高(Z3次之,Z4次之),Z1幼苗生长速率最低;随着时间的推移,生长速率呈明显的下降趋势,与气温升高和相对湿度降低相一致。7月沙尘天气明显增多,导致大量沙尘淤积,造成幼苗大面积掩埋死亡。我们的研究强调,幼苗的生长可能受到潮汐淹没程度的影响,沙尘暴是一个自然的压力源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The impact of inundation and sandstorms on the growth and survival of the mangrove Avicennia marina seedlings in the southern Red Sea
Mangroves occur in tropical and subtropical regions, including harsh arid areas. Little is known about how the environmental conditions of deserts influence the ecology of mangrove seedlings. The seedlings of the mangrove Avicennia marina were examined in situ in a natural stand of the southern Red Sea coast of Saudi Arabia to (1) estimate and compare the growth rate of A. marina between selected microhabitats with different tidal exposures, and (2) examine the influence of sandstorms on the growth and survival of the seedlings. Samplings were conducted in four zones established according to their tidal exposure: low tidal exposure (Z1), medium tidal exposure (Z2), high tidal exposure with numerous burrows (Z3), and high tidal exposure with a few or no burrows (Z4). Vertical growth and mortality of the seedlings and selected environmental variables were quantified. The results show that seedling growth rates differed significantly between the sampling zones, the highest growth being found in the high tidal regions (Z3 followed by Z4) and the lowest growth in Z1. Growth rate followed a significant decreasing pattern over time, coinciding with increasing air temperature and decreasing relative humidity. Sandstorms showed a marked increase in July, leading to massive dust deposition that caused extensive mortality of the seedlings by burial. Our study highlights that seedling growth can be affected by the extent of tidal inundation and that sandstorms act as a natural stressor.
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来源期刊
Scientia Marina
Scientia Marina 生物-海洋与淡水生物学
CiteScore
2.10
自引率
0.00%
发文量
21
审稿时长
6-12 weeks
期刊介绍: Scientia Marina is the successor to Investigación Pesquera, a journal of marine sciences published since 1955 by the Institut de Ciències del Mar de Barcelona (CSIC). Scientia Marina is included in the Science Citation Index since 1998 and publishes original papers, reviews and comments concerning research in the following fields: Marine Biology and Ecology, Fisheries and Fisheries Ecology, Systematics, Faunistics and Marine Biogeography, Physical Oceanography, Chemical Oceanography, and Marine Geology. Emphasis is placed on articles of an interdisciplinary nature and of general interest.
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