Ongoing localized extinctions of stream-dwelling white-spotted charr populations in small dammed-off habitats of Hokkaido Island, Japan

Ongoing localized extinctions of stream-dwelling white-spotted charr populations in small dammed-off habitats of Hokkaido Island, Japan
复制标题

日本北海道岛小型封闭栖息地的溪流白点红点鲑种群持续局部灭绝

DOI:
10.1007/s10750-019-3891-1
复制
发表时间:
2019
期刊:
影响因子:
2.6
通讯作者:
Hitoshi Araki
Hitoshi Araki
中科院分区:
生物学3区
文献类型:
--
作者:
Kentaro Morita;Genki Sahashi;Masaki Miya;Shouko Kamada;Takashi Kanbe;Hitoshi Araki

文献摘要

参考文献

被引文献

相似文献

筑坝造成的栖息地破碎化可以大大降低水生生物的种群生存能力,由于人口、遗传和环境随机性的增加,较小的破碎种群面临更高的灭绝风险。然而,经验证据表明,较小的自然种群更容易灭绝是有限的。通过比较1999年至2014年日本北海道西南部大岛半岛30条截流溪流中白鲑种群的发生率,研究了白斑红鲑种群灭绝的脆弱性。使用电捕鱼和环境DNA调查,我们确定了三个本地化的保护,随着流域面积的减少(我们的栖息地大小的替代品)灭绝的可能性增加。我们还发现了一个新的人口在一个大坝关闭流中,白斑红点鲑以前是未知的,安装后的鱼梯,表明白斑红点鲑的能力,在短时间内重新连接栖息地。我们的研究结果表明,局部灭绝的白斑红点鲑在小水坝关闭流正在进行中,但适当的鱼类迁徙走廊可以降低局部灭绝的风险,并增加物种的持久性的概率。
Habitat fragmentation caused by damming can greatly reduce the population viability of aquatic organisms, with smaller fragmented populations at higher risk of extinction due to increased demographic, genetic, and environmental stochasticity. However, empirical evidence demonstrating that smaller natural populations are more vulnerable to extinction is limited. We studied the vulnerability to extinction of white-spotted charr (Salvelinus leucomaenis) populations in 30 dammed-off streams in Oshima Peninsula, southwestern Hokkaido Island, Japan, by comparing the incidence of charr populations in streams between 1999 and 2014. Using electrofishing and environmental DNA surveys, we identified three localized extinctions, with the probability of extinction increasing with decreasing watershed area (our surrogate for habitat size). We also found a new population in one dammed-off stream in which white-spotted charr were previously unknown, after installation of a fish ladder, indicating the capacity of white-spotted charr to recolonize reconnected habitat in a short period. Our results suggest that localized extinction of white-spotted charr in small dammed-off streams is ongoing, but that appropriate fish migration corridors can reduce localized extinction risk and increase the probability of species persistence.
DOI: 10.1126/sciadv.1500052
发表时间: 2015-03
期刊: Science advances
影响因子: 13.6
作者:
Haddad NM;Brudvig LA;Clobert J;Davies KF;Gonzalez A;Holt RD;Lovejoy TE;Sexton JO;Austin MP;Collins CD;Cook WM;Damschen EI;Ewers RM;Foster BL;Jenkins CN;King AJ;Laurance WF;Levey DJ;Margules CR;Melbourne BA;Nicholls AO;Orrock JL;Song DX;Townshend JR
通讯作者: Townshend JR
栖息地破碎化后溪流居民鲑科鱼的种群生存能力:基于个体模型的白点红点鲑(Salvelinus leucomaenis)案例研究
DOI: 10.1016/s0304-3800(02)00128-x
发表时间: 2002
影响因子: 3.1
作者:
K. Morita;A. Yokota
通讯作者: A. Yokota
DOI: 10.1016/j.ecolind.2017.08.033
发表时间: 2018
影响因子: 6.9
作者:
L. Nathan;A. Smith;A. Welsh;J. Vokoun
通讯作者: J. Vokoun
河流碎片长度与两种濒临灭绝的大平原鲤鱼持久性之间的关系
DOI: 10.1080/02705060.2013.785984
发表时间: 2013
影响因子: 1.3
作者:
G. Wilde;Aaron C. Urbanczyk
通讯作者: Aaron C. Urbanczyk
评估鳟鱼入侵对本地红点鲑的长期因果影响
DOI: 10.1016/j.ecolind.2017.12.058
发表时间: 2018
影响因子: 6.9
作者:
K. Morita
通讯作者: K. Morita