Insights into past land-use and vegetation change in the Llanos de Moxos (Bolivia) using fungal non-pollen palynomorphs
Insights into past land-use and vegetation change in the Llanos de Moxos (Bolivia) using fungal non-pollen palynomorphs
复制标题
DOI：
10.1016/j.jas.2021.105382
复制
发表时间：
2021-06
影响因子：
2.8
通讯作者：
N. Loughlin;F. Mayle;N. N. Nuñez Otaño-N.;J. O'Keefe;N. Duncan;John H. Walker;B. Whitney
中科院分区：
文献类型：
--
作者：
N. Loughlin;F. Mayle;N. N. Nuñez Otaño-N.;J. O'Keefe;N. Duncan;John H. Walker;B. Whitney
在这里，我们记录了1000年来来自大草原地区的真菌记录，这是玻利维亚亚马逊地区季节性淹没的森林稀树草原马赛克。真菌对植被的变化极为敏感，因为它们与当地环境密切相关，为过去当地植被和土地利用的变化提供了有用的替代。在这里，真菌非花粉孢粉形体(NPP)的遗骸是从来自拉古纳·埃尔·塞里托的沉积岩芯中鉴定出来的。采用多元约束排序法提取真菌NPP类型与环境梯度之间的关系，特别是树木覆盖、近岸植被、作物种植、燃烧和当地沉积物输入。NPP类型，如神经孢子菌，被认为是前欧洲农业的标志，并提供了在提高的田地地区扩大耕作时间范围的能力。约束聚类分析表明，NPP组合中最显著的变化发生在公元1500年和公元1700年，分别对应于欧洲人到美洲和耶稣会传教士到莫索斯大草原。现代稀树草原景观是由土地利用的变化和欧洲遭遇后引进的牛所塑造的。
Here we document a 1000-year fungal record from the raised-field region of the Llanos de Moxos, a seasonally inundated forest-savanna mosaic in the Bolivian Amazon. Fungi are extremely sensitive to changes in vegetation due to their close relationship with the local environment, providing a useful proxy for past local vegetation and land-use change. Here the remains of fungal non-pollen palynomorphs (NPPs) are identified from a sediment core taken from Laguna El Cerrito. A multivariate constrained ordination is used to extract relationships between the fungal NPP types and environmental gradients, specifically, tree cover, near-shore vegetation, crop cultivation, burning and local sediment input. NPP types such asNeurosporacf.cerealisare identified as indicative of pre-European agriculture and offer the ability to expand on the temporal range of cultivation in the raised-field region. Constrained cluster analysis indicates that the most significant changes in the NPP assemblage occurs c. 1500 and c. 1700 CE, corresponding to the arrival of Europeans to the Americas and Jesuit missionaries to the Llanos de Moxos respectively. The modern savanna landscape is one shaped by changes in land-use and the introduction of cattle following the European Encounter.