Do global change variables alter mangrove decomposition? A systematic review
Do global change variables alter mangrove decomposition? A systematic review
复制标题
DOI：
10.1111/geb.13743
复制
发表时间：
2023-08
影响因子：
6.4
通讯作者：
L. Simpson;S. Chapman;Lance Simpson;J. Cherry
中科院分区：
文献类型：
--
作者：
L. Simpson;S. Chapman;Lance Simpson;J. Cherry
预计全球变化将改变红树林生态系统中有机物分解的幅度和轨迹。然而，这种变化的程度和方向是未知的，特别是考虑到红树林提供的巨大的碳储存潜力。我们对主要文献进行了系统回顾，以研究特定属凋落物质量、纬度或其他全球变化指标与红树林凋落物分解率之间的关系。我们调查了属，组织类型，纬度和全球变化代理分解率的影响，使用线性模型和定性方法。我们还进行了计算，以确定潜在的重要性的分解过程中的根凋落物生物量C池的背景下，蓝色C的意义。总的来说，纬度关系表明，温度以外的因素，如组织类型和属，可能会调节红树林的分布范围内的衰减率。落叶、根和木材的腐烂率在各大洲和地貌环境中分别收敛于0.009 ± 0.0005、0.002 ± 0.0001和0.001 ± 0.0003。我们的计算表明，分解率的小变化不会引起蓝C储存潜力的大变化。在分布范围内检测到的红树林生物量衰减率变化背后的主要驱动因素仍然不确定。然而，红树林栖息的纬度范围很小，垃圾分解的淹没环境表明，腐烂取决于物种特异性反应或物种之间对全球变化驱动因素的生物相互作用。很少有研究直接研究全球变化的影响，在衰减和缺乏代表性的一些红树林群体在文献中的变化表明，蓝C的影响是重要的考虑。
Global change is expected to modify the magnitude and trajectory of organic matter decomposition in mangrove ecosystems. Yet, the degree and direction of that change is unknown, especially considering the large C storage potential that mangroves provide. We performed a systematic review of primary literature to examine the relationships between genus‐specific litter quality, latitude or other global change proxies and decomposition of mangrove litter fractions.Global.1976–2021.Mangroves.We compiled a dataset of 480 decomposition rates, including species, litter fraction, latitude, and relevant biophysical data. We investigated the influence of genera, tissue type, latitude, and global change proxies on decomposition rates using linear models and qualitative approaches. We also performed calculations to determine the potential importance of the decomposition process on the root litter biomass C pool in the context of blue C significance.Collectively, latitudinal relationships suggest that factors other than temperature, such as tissue type and genus, may regulate decay rates within mangroves' distributional range. Decay rates of leaf litter, roots, and wood converged on a value of 0.009 ± 0.0005, 0.002 ± 0.0001, and 0.001 ± 0.0003, respectively, across continents and geomorphological settings. Our calculations suggest that small changes in decomposition rate will not elicit large changes in blue C storage potential.The main drivers behind variability in mangrove biomass decay rates detected across the distributional range remain uncertain. However, the small latitudinal range that mangroves inhabit and the submerged environment within which litter decomposes suggest that decay depends on species‐specific responses or biotic interactions among species to global change drivers. Few studies have examined global change impacts directly, and variability in decay and lack of representation of some mangrove groups in the literature suggest that implications for blue C are important to consider.