Long‐term monitoring shows that drought sensitivity and riparian land use change coincide with freshwater mussel declines
Long‐term monitoring shows that drought sensitivity and riparian land use change coincide with freshwater mussel declines
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长期监测表明，干旱敏感性和河岸土地利用变化与淡水贻贝数量下降相一致
DOI：
10.1002/aqc.3884
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Vaughn, Caryn C.
中科院分区：
文献类型：
--
作者：
Lopez, Jonathan W.;DuBose, Traci P.;Franzen, Alex J.;Atkinson, Carla L.;Vaughn, Caryn C.
淡水贻贝（Bivalvia: Unionoida）在全球范围内处于濒危状态，是广泛保护计划的主题。本研究将传统的物种监测调查与一种新的功能性状分类方案和公开的环境数据相结合，以评估贻贝丰度和物种丰富度下降的潜在环境驱动因素。在美国俄克拉何马州东南部，在格洛弗河、福克山河和小河上游进行了调查，以记录贻贝的丰度和组合组成。目前的调查结果（2015-2021）与之前的研究结果（1993 - 1999,2010）进行了比较，以记录贻贝组合的物种和功能组成的长期变化以及气候和土地利用的同步变化。在过去和现在的调查中，每单位努力贻贝捕获量下降了71.5%。物种丰富度同期下降44.4%。利用一种新的贻贝干旱敏感性分类，研究人员发现，这种下降与干旱敏感类群的不成比例的损失（下降67.0%）有关，而那些被分类为耐旱的类群的丰度没有下降。贻贝数量减少的同时，开放的地表水（如溪流、池塘和湖泊）和河岸湿地也在减少，当地气温升高，水文干旱时间更长、更严重。这些发现表明，为了全面了解贻贝数量减少的原因和后果，保护生物学家不仅要监测受威胁生物的物种组成和丰度，还要考虑功能特征。这些结果进一步强调了长期监测长寿生物的重要性，因为气候和土地利用变化发生的时间尺度是十年代际的。
Freshwater mussels (Bivalvia: Unionoida) are globally imperilled and are the subjects of wide‐ranging conservation initiatives. This study combined traditional species‐monitoring surveys with a novel functional trait classification scheme and publicly available environmental data to assess potential environmental drivers of declining mussel abundance and species richness.Surveys to document mussel abundance and assemblage composition in south‐east Oklahoma, United States were conducted on the Glover, Mountain Fork and upper Little rivers. Present day survey results (2015–2021) were compared with those from previous studies (1993–1999, 2010) to document long‐term changes in the species and functional composition of mussel assemblages and concurrent changes in climate and land use.Mussel catch per unit effort declined by 71.5% between historical and present day surveys. Species richness declined by 44.4% over this same period. Using a novel classification of mussel drought sensitivity, it was found that the declines were associated with a disproportionate loss of drought‐sensitive taxa (67.0% decline) – those classified as drought‐tolerant did not decline in abundance. Mussel declines coincided with the loss of open surface waters (such as streams, ponds and lakes) and riparian wetlands, increased local air temperatures and longer and more intense hydrological drought.These findings indicate that for a complete understanding of the causes and consequences of mussel declines, conservation biologists must not only monitor the species composition and abundance of threatened organisms, but also consider functional traits. The results further underscore the importance of long‐term monitoring for long‐lived organisms owing to the decadal time scales over which climate and land use change occur.
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影响因子：
2.4
作者：
Khan, Jennifer M.;Hart, Michael;Randklev, Charles R.
通讯作者：
Randklev, Charles R.
影响因子：
2.6
作者：
A. Tarter;D. Ford;D. E. Symonds;N. Ford;A. Schwalb
通讯作者：
A. Schwalb
在易发生干旱的河流流域，物种丧失的热点在未来气候情景中不会发生变化
影响因子：
2.6
作者：
Kenneth C. Gill;R. Fovargue;T. Neeson
通讯作者：
T. Neeson
明尼苏达州两条河流中麝香鼠对淡水贻贝的选择性捕食
影响因子：
--
作者：
M. Tyrrell;D. Hornbach
通讯作者：
D. Hornbach
脱水对淡水贻贝（贻贝科）群落结构的影响及其对保护和水政策的影响：美国西南部泉水溪流的案例研究
影响因子：
4
作者：
C. Randklev;Eric T. Tsakris;Matthew S. Johnson;Traci Popejoy;Michael A Hart;Jennifer M. Khan;Dakus Geeslin;C. Robertson
通讯作者：
C. Robertson