The effects of wood decay type on the growth of bryophyte gametophytes
The effects of wood decay type on the growth of bryophyte gametophytes
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DOI：
10.1080/03736687.2017.1417778
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发表时间：
2018-01-01
影响因子：
1.9
通讯作者：
Ando, Yoko
中科院分区：
文献类型：
--
作者：
Fukasawa, Yu;Ando, Yoko
枯木是北方和亚高山森林苔藓植物的重要生境。真菌侵殖引起的木材腐烂类型（白色、棕色和软腐）已被揭示影响苔藓植物群落。然而，人们对苔藓植物的腐烂类型对其生长的影响知之甚少。研究了木材腐烂类型对两种常见苔藓植物Scapania bolanderi Austin和Pleurozium schreberi （Brid.）配子体生长的影响。手套。在日本本州中部的御岳山亚高山针叶林中占主导地位的原木。我们在露天苗圃进行盆栽试验。栽培8个月后，褐腐木上的黑穗草生长比白腐木上的大，而雪白腐木的生长则不如白腐木。两种植物的混合培养在褐腐木上也表现出更大的生长。但在混合培养条件下，白僵菌的生长明显小于雪僵菌。这些结果表明，褐腐木可以促进褐腐木的生长，但在褐腐木的竞争下会抑制褐腐木的生长。结果与野外观察结果一致，褐腐木与白栎在枯木上的盖度呈正相关。
Deadwood is an important habitat for bryophytes in boreal and subalpine forests. The type of decay in wood (white, brown, and soft rot) caused by fungal colonizers has been revealed to affect bryophyte communities. However, little is known about the effects of decay type on the growth of bryophytes. We tested the effect of wood decay type on gametophyte growth for two common bryophyte species, Scapania bolanderi Austin and Pleurozium schreberi (Brid.) Mitt., which dominate the logs in subalpine coniferous forest on Mt. Ontake, in central Honshu, Japan. We used pot culture experiments in an open-sky nursery field. After eight months of cultivation, the growth of S. bolanderi was larger on brown rot wood than white rot wood, but the growth of P. schreberi was not. Mixed cultures of the two species also showed greater growth on brown rot wood. However, growth of S. bolanderi was significantly smaller than P. schreberi in mixed culture. These results suggest that brown rot wood enhances growth of S. bolanderi, but growth may be reduced under competition from P. schreberi. The results are in agreement with the field observation that brown rot wood has a positive association with S. bolanderi coverage on deadwood.