Similar biodiversity of ectomycorrhizal fungi in set-aside plantations and ancient old-growth broadleaved forests.
Similar biodiversity of ectomycorrhizal fungi in set-aside plantations and ancient old-growth broadleaved forests.
复制标题
DOI：
10.1016/j.biocon.2015.12.003
复制
发表时间：
2016-02
影响因子：
5.9
通讯作者：
Doncaster CP
中科院分区：
文献类型：
--
作者：
Spake R;van der Linde S;Newton AC;Suz LM;Bidartondo MI;Doncaster CP
目前，将过熟的人造林搁置一边，被视为保护与原始森林有关的物种，例如那些传播受到限制的物种的一种选择。然而，很少有数据表明，为此目的，或这种生境类型的生物多样性相对于古老的半自然生态系统的价值搁置种植园的效用。在这里，我们评估了森林类型相对于栖息地特征的贡献，在确定物种丰富度和组成的7个森林区块，每个区块包含一个古老的老林（> 1000年）与预留的同龄种植林（约1000年）配对。180岁）。我们调查了功能上重要但相对被忽视的外生菌根真菌（EMF），一组森林年龄的重要性尚未评估阔叶林。我们发现，森林类型是EMF物种丰富度或组成的一个重要的决定因素，表明预留可以是一个有效的选择，保护古老的EMF社区。地上EMF子实体的物种丰富度主要与林分的断面积（冠层覆盖的相关）和树种多样性有关，而地下外生菌根的丰富度仅由树木多样性驱动。我们的研究结果表明，过成熟的人工林，特别是那些高断面积的混交林，是一种有效的手段来连接和扩大生态网络的古老的原始森林在历史上砍伐森林和破碎的景观外生菌根真菌。外生菌根真菌丰富度在古老和过熟人工林中相似。各森林类型的群落组成也相似。真菌子实体丰富度与断面积和乔木多样性呈正相关。地下真菌丰富度与乔木多样性呈正相关。
Setting aside overmature planted forests is currently seen as an option for preserving species associated with old-growth forests, such as those with dispersal limitation. Few data exist, however, on the utility of set-aside plantations for this purpose, or the value of this habitat type for biodiversity relative to old-growth semi-natural ecosystems. Here, we evaluate the contribution of forest type relative to habitat characteristics in determining species richness and composition in seven forest blocks, each containing an ancient old-growth stand (> 1000 yrs) paired with a set-aside even-aged planted stand (ca. 180 yrs). We investigated the functionally important yet relatively neglected ectomycorrhizal fungi (EMF), a group for which the importance of forest age has not been assessed in broadleaved forests. We found that forest type was not an important determinant of EMF species richness or composition, demonstrating that set-aside can be an effective option for conserving ancient EMF communities. Species richness of above-ground EMF fruiting bodies was principally related to the basal area of the stand (a correlate of canopy cover) and tree species diversity, whilst richness of below-ground ectomycorrhizae was driven only by tree diversity. Our results suggest that overmature planted forest stands, particularly those that are mixed-woods with high basal area, are an effective means to connect and expand ecological networks of ancient old-growth forests in historically deforested and fragmented landscapes for ectomycorrhizal fungi. Ectomycorrhizal fungi richness was similar in ancient and overmature planted forest. Community composition was also similar across the forest types. Fungal fruit body richness was positively related to basal area and tree diversity. Below-ground ectomycorrhizae richness was positively related to tree diversity.