Habitat changes and population dynamics of fishes in a stream with forest floor degradation due to deer overconsumption in its catchment area
Habitat changes and population dynamics of fishes in a stream with forest floor degradation due to deer overconsumption in its catchment area
复制标题
由于流域内过度消耗鹿而造成森林地面退化的溪流中鱼类的栖息地变化和种群动态
DOI：
10.1111/csp2.71
复制
发表时间：
2019
影响因子：
3.1
通讯作者：
Hikaru Nakagawa
中科院分区：
文献类型：
--
作者：
安藤詩織;河合恭甫;上口(田中)美弥子;大井崇生.;Hikaru Nakagawa
近几十年来，鹿的过度繁殖导致的森林退化已经成为一个世界性的问题。鹿的过度放牧不仅影响陆地生态系统，而且还蔓延到水生生态系统。鹿对森林地面植被的大量消耗造成了裸露的山坡，增加了流入邻近河流的沉积物。此外，河流具有上下游连续体结构，上游森林退化事件的影响可能会蔓延到下游更大的生态系统。然而，很少有研究探讨鹿过度对下游生态系统的间接影响。我研究了13种鱼类的种群动态和栖息地特征之间的关系，在下游网站的过程中，11年后，森林地面退化鹿过度消费在36.5平方公里的集水区的Yura河在Ashiu研究森林，日本，这是很好的保护免受人为影响。在我11年的观察中，溪流栖息地的特征从以粗基质为主转变为细基质。我观察到一个显着的减少，在一个物种（Tribolodon hakonensis）和增加，在另一个物种（Pseudogobio esocinus），这些变化是合理的增加或减少，其首选的栖息地类型在采样点一致。这项研究表明，由于鹿在其集水区的过度消费，森林地面退化后，溪流中的长期栖息地发生了变化，并证明了鱼类种群对这些变化的反应。这项研究表明，集水区管理，包括森林生态系统保护，是必要的，以解决河流生态系统的根本问题。
Forest degradation caused by deer overabundance has become a worldwide problem in recent decades. Overgrazing by deer not only affects terrestrial ecosystems but also spreads to aquatic ecosystems. Mass consumption of forest floor vegetation by deer creates denuded slopes and increases sediment inputs into adjacent rivers. In addition, rivers have upstream–downstream continuum structures, whereby the effects of degradation events in forests at upstream sites may spread to larger ecosystems downstream. However, few studies have examined the indirect effects of deer overabundance on downstream ecosystems. I examined the relationships between population dynamics of 13 fish species and habitat characteristics at a downstream site over the course of 11 years after forest floor degradation by deer overconsumption in a 36.5‐km2catchment area of the Yura River in the Ashiu Research Forest, Japan, which is well‐protected from anthropogenic influences. During my 11 years of observation, characteristics of stream habitats changed from a predominantly coarse substrate to a fine substrate. I observed a remarkable decrease in one species (Tribolodon hakonensis) and increase in another species (Pseudogobio esocinus), and these changes were reasonably consistent with the increase or decrease in their preferred habitat types in the sampling site. This study showed long‐term habitat changes in a stream after forest floor degradation due to deer overconsumption in its catchment area and demonstrated that fish populations reacted to these changes. This study suggests that catchment‐level management, including forest ecosystem conservation, is necessary to solve fundamental problems in stream ecosystems.
登录
查看更多内容
日本鲮鱼箱根鲮 (Tribolodon hakonensis) 对有或无庇护所的人工临时溪流的使用
影响因子：
1.9
作者：
O. Katano;Y. Aonuma;N. Matsubara
通讯作者：
N. Matsubara
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
福田 淳子;高柳 敦
通讯作者：
高柳 敦
日本芦保植物区系
DOI：
--
发表时间：
1995
期刊：
Contributions from the Biological Laboratory, Kyoto University
影响因子：
--
作者：
Sachiko Yasuda;H. Nagamasu
通讯作者：
H. Nagamasu
影响因子：
--
作者：
Gido, Keith B.;Dodds, Walter K.;Eberle, Mark E.
通讯作者：
Eberle, Mark E.
日本北海道岛上梅花鹿种群不断扩大的空间分布
影响因子：
1.5
作者：
K. Kaji
通讯作者：
K. Kaji