Large diameters and tree bark physical attributes drive vascular epiphyte-phorophyte relationships in Amazonian black-water floodplain forest

IF 1.9 4区 环境科学与生态学 Q3 ECOLOGY Plant Ecology Pub Date : 2023-12-30 DOI:10.1007/s11258-023-01387-1
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Abstract

Understanding the interactive relationships between organisms is key to understanding community structure and planning appropriate conservation measures. Even more so for plant-plant interactions, which are poorly understood. We studied the vascular epiphyte community and its interactions with the tree community (phorophytes) in Amazonian black-water floodplain forests (igapó), analyzing 58 floristic inventory plots located along a 517 km stretch of the Brazilian Negro River, in the Central Amazon. The vascular epiphytes and trees were identified and quantified, and the physical attributes of the bark were measured, as well as the diameter at breast height (DBH) of the tree species. A total of 2746 trees ≥ 10 cm DBH were inventoried, of which 969 were phorophytes (35.29%), hosting 4692 individuals of epiphytic species, belonging to 17 families 50 genera, and 106 species. Pouteria elegans was the most abundant phorophyte, however, Aldina latifolia showed proportionally higher richness and abundance of epiphytes. Codonanthopsis crassifolia was the epiphyte that colonized most of the phorophytes and showed the highest Epiphytic Importance Value (EIV). The average values for thickness, saturated weight, water retention capacity, and diameter were significantly higher in the tree species that housed vascular epiphytes. In addition, the vascular epiphyte richness (R2m = 0.32; R2c = 0.41) and abundance (R2m = 0.36; R2c = 0.90) were strongly influenced by larger diameters of phorophytes and their saturated bark weight. Our results confirm the importance of phorophyte size (DBH) for epiphyte colonization, present the most complete epiphyte list of Amazonian black-water floodplain forests and provide evidence that physical attributes of tree bark drive the structure of vascular epiphyte-phorophyte interactions.

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亚马逊黑水洪泛平原森林中的大直径和树皮物理属性驱动着维管附生植物与植物之间的关系
摘要 了解生物之间的互动关系是了解群落结构和规划适当保护措施的关键。植物与植物之间的相互作用更是如此,因为人们对这种关系的了解还很不够。我们研究了亚马逊黑水洪泛平原森林(igapó)中的维管附生植物群落及其与树木群落(phorophytes)之间的相互作用,分析了位于亚马逊中部巴西内格罗河 517 公里河段上的 58 个花卉调查地块。对维管束附生植物和树木进行了鉴定和量化,并测量了树皮的物理属性以及树种的胸径(DBH)。共调查了 2746 棵胸径≥10 厘米的树木,其中有 969 棵是噬叶植物(占 35.29%),附生物种有 4692 个个体,隶属于 17 科 50 属 106 种。Pouteria elegans 是最丰富的噬叶植物,不过,Aldina latifolia 的附生植物丰富度和丰度也相应较高。Codonanthopsis crassifolia 是最多噬叶植物定殖的附生植物,其附生植物重要性值(EIV)也最高。栖息维管附生植物的树种的厚度、饱和重量、保水能力和直径的平均值明显更高。此外,维管附生植物的丰富度(R2m = 0.32;R2c = 0.41)和丰度(R2m = 0.36;R2c = 0.90)受到较大直径的噬叶植物及其饱和树皮重量的强烈影响。我们的研究结果证实了叶绿体大小(DBH)对附生植物定殖的重要性,提供了亚马逊黑水洪积平原森林最完整的附生植物列表,并提供了树皮物理属性驱动维管附生植物-叶绿体相互作用结构的证据。
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来源期刊
Plant Ecology
Plant Ecology 环境科学-林学
CiteScore
3.40
自引率
0.00%
发文量
58
审稿时长
8.6 months
期刊介绍: Plant Ecology publishes original scientific papers that report and interpret the findings of pure and applied research into the ecology of vascular plants in terrestrial and wetland ecosystems. Empirical, experimental, theoretical and review papers reporting on ecophysiology, population, community, ecosystem, landscape, molecular and historical ecology are within the scope of the journal.
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