Assessment of mangrove structures and biomass on islands along the Java Sea: a case study on Bawean Islands and Karimunjawa Islands

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Frontiers in Ecology and Evolution Pub Date : 2024-09-18 DOI:10.3389/fevo.2024.1422749

Muhammad Arif Asadi, Alvu Sya’ban Al-kareem, Riqki Yoga Aprilianto, Aida Sartimbul, Ade Yamindago, Dhira Khurniawan Saputra, Achmad Riyadi

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Abstract

Mangroves on the islands along the Java Sea play a crucial role in supporting biodiversity, protecting coastlines, and sequestering carbon. However, there is a lack of information on mangrove structure and biomass in the area. This study aimed to assess the mangrove structures and biomass on Desa Daun, located on the Bawean Islands, and Kemujan Island, located on the Karimunjawa Islands, respectively. The study utilized a combination of line transect and quadrant plot methods with a size plot of 10x10 m. We established 7 line transects and 28 quadrant plots in the mangrove forest of Desa Daun and similarly set up 7 line transects and 21 quadrant plots on Kemujan Island. Within each quadrant, the mangrove species were identified, and their diameters at breast height (DBH) were recorded. To assess the relative significance of each species, the importance value index (IVI) was calculated, and allometric equations were applied to estimate biomass and carbon storage in the trees. PlanetScope imagery was also used to quantify the carbon stock of mangroves on those islands. In Desa Daun, 13 mangrove species were identified, while 12 species were recorded on Kemujan Island. The species Nypa fruticans and Excoecaria agallocha exhibited the highest IVI in Desa Daun and Kemujan Island, respectively. Notably, Rhizophora apiculata demonstrated the greatest biomass in both locations, with measurements of 43.08 Mg B/ha in Desa Daun and 102.22 Mg B/ha in Kemujan Island. Overall, mangrove stands on Desa Daun stored biomass of 113.60 Mg B/ha and carbon of 50.98 Mg C/ha, whereas mangrove stands on Kemujan Island stored biomass of 295.04 Mg B/ha and carbon of 131.95 Mg C/ha. Mangrove stands of the whole Bawean Islands sequestered 22,941 Mg C, while Karimunjawa Islands hold much higher C stocks, 79,451 Mg C. Despite being smaller in size, the Karimunjawa Islands have more extensive mangrove coverage compared to the Bawean Islands due to their geomorphological characteristics, which in turn influence their mangrove structures and carbon stocks. However, the loss of mangroves in the Karimunjawa Islands due to aquaculture expansions could increase carbon loss in the islands.

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评估爪哇海沿岸岛屿的红树林结构和生物量：巴万群岛和卡里蒙查瓦群岛案例研究

爪哇海沿岸岛屿上的红树林在支持生物多样性、保护海岸线和固碳方面发挥着至关重要的作用。然而，该地区缺乏有关红树林结构和生物量的信息。本研究旨在评估分别位于巴旺群岛的 Desa Daun 和卡里蒙查瓦群岛的 Kemujan 岛的红树林结构和生物量。我们在 Desa Daun 的红树林中设立了 7 个直线横断面和 28 个象限地块，并在 Kemujan 岛上同样设立了 7 个直线横断面和 21 个象限地块。在每个象限内，对红树林物种进行识别，并记录其胸径（DBH）。为了评估每个物种的相对重要性，计算了重要性价值指数 (IVI)，并应用计量方程估算了树木的生物量和碳储量。PlanetScope 图像也用于量化这些岛屿上红树林的碳储量。在 Desa Daun，确定了 13 个红树林物种，而在 Kemujan 岛则记录了 12 个物种。在 Desa Daun 和 Kemujan 岛，Nypa fruticans 和 Excoecaria agallocha 的 IVI 分别最高。值得注意的是，Rhizophora apiculata 在这两个地点的生物量都最大，在 Desa Daun 的测量值为 43.08 兆克生物量/公顷，在 Kemujan 岛的测量值为 102.22 兆克生物量/公顷。总体而言，Desa Daun 的红树林储存了 113.60 兆克生物量/公顷和 50.98 兆克碳/公顷的碳，而 Kemujan 岛的红树林储存了 295.04 兆克生物量/公顷和 131.95 兆克碳/公顷的碳。整个巴威恩群岛的红树林螯合了 22,941 兆克碳，而卡里蒙加瓦群岛的碳储量要高得多，达到 79,451 兆克碳。尽管卡里蒙加瓦群岛面积较小，但由于其地貌特征，红树林覆盖范围比巴威恩群岛更广，这反过来又影响了其红树林结构和碳储量。不过，由于水产养殖业的扩张，卡里蒙查瓦群岛红树林的损失可能会增加该群岛的碳损失。

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来源期刊

Frontiers in Ecology and Evolution Environmental Science-Ecology

CiteScore

4.00

自引率

6.70%

发文量

1143

审稿时长

12 weeks

期刊介绍： Frontiers in Ecology and Evolution publishes rigorously peer-reviewed research across fundamental and applied sciences, to provide ecological and evolutionary insights into our natural and anthropogenic world, and how it should best be managed. Field Chief Editor Mark A. Elgar at the University of Melbourne is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics and the public worldwide. Eminent biologist and theist Theodosius Dobzhansky’s astute observation that “Nothing in biology makes sense except in the light of evolution” has arguably even broader relevance now than when it was first penned in The American Biology Teacher in 1973. One could similarly argue that not much in evolution makes sense without recourse to ecological concepts: understanding diversity — from microbial adaptations to species assemblages — requires insights from both ecological and evolutionary disciplines. Nowadays, technological developments from other fields allow us to address unprecedented ecological and evolutionary questions of astonishing detail, impressive breadth and compelling inference. The specialty sections of Frontiers in Ecology and Evolution will publish, under a single platform, contemporary, rigorous research, reviews, opinions, and commentaries that cover the spectrum of ecological and evolutionary inquiry, both fundamental and applied. Articles are peer-reviewed according to the Frontiers review guidelines, which evaluate manuscripts on objective editorial criteria. Through this unique, Frontiers platform for open-access publishing and research networking, Frontiers in Ecology and Evolution aims to provide colleagues and the broader community with ecological and evolutionary insights into our natural and anthropogenic world, and how it might best be managed.