Intraspecific variation in landform engineering across a restored salt marsh shoreline.
Intraspecific variation in landform engineering across a restored salt marsh shoreline.
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DOI：
10.1111/eva.13148
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发表时间：
2021-03
影响因子：
4.1
通讯作者：
Blum MJ
中科院分区：
文献类型：
--
作者：
Bernik BM;Lumibao CY;Zengel S;Pardue J;Blum MJ
改变地貌的生态系统工程师可以成为恢复栖息地的宝贵工具，但他们的使用经常导致意想不到的结果。由于应用程序低估了地貌过程受可遗传表型变异影响的可能性，因此可能会出现预期结果。我们进行了一个现场规模的共同花园实验，以评估海岸线侵蚀是否反映了地貌工程师互花米草的种内变异。在深水地平线石油泄漏的海岸线裸露的复制地块进行植被重建，使用植物从四个不同的遗传来源：当地人口，非本地人口，和两个苗木。我们评估了生物量，组织养分和功能性状的变化，以及土壤剪切强度，地表高程和海岸线侵蚀率超过2年。我们发现，生产力，性状，养分含量和侵蚀速率根据植物种源而变化。侵蚀反映的特征，如根结构比粗糙的增长指标。侵蚀显着较高的地块与非本地植物表现出较低的生产力，可能是由于氮限制。我们的研究结果表明，恢复的做法应占种内变化的地貌工程师和原位试验应在预定恢复的网站进行评估供体源的适用性，特别是如果引进可能会修改当地人口。
Ecosystem engineers that modify landforms can be valuable tools for restoring habitat, but their use has frequently resulted in unanticipated outcomes. Departures from expectations might arise because applications discount the possibility that geomorphic processes are influenced by heritable phenotypic variation. We conducted a field‐scale common garden experiment to assess whether shoreline erosion reflects intraspecific variation in the landform engineer Spartina alterniflora. Replicated plots on a shoreline denuded by the Deepwater Horizon oil spill were revegetated using plants from four genetically distinct sources: the local population, a nonlocal population, and two nursery stocks. We assessed variation in biomass, tissue nutrients, and functional traits alongside soil shear strength, surface elevation, and shoreline erosion rates over 2 years. We found that productivity, traits, nutrient content, and erosion rates varied according to plant provenance. Erosion reflected traits like root architecture more so than coarser metrics of growth. Erosion was significantly higher in plots with nonlocal plants that exhibited lower productivity, likely due to nitrogen limitation. Our results indicate that restoration practices should account for intraspecific variation in landform engineers and that in situ trials should be performed at sites slated for restoration to evaluate donor source suitability, particularly if introductions might modify local populations.
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影响因子：
3.9
作者：
Blum, Michael J.;Bando, K. Jun;Strong, Donald R.
通讯作者：
Strong, Donald R.
影响因子：
4.8
作者：
Jones, CG;Lawton, JH;Shachak, M
通讯作者：
Shachak, M
影响因子：
3.4
作者：
JONES, CG;LAWTON, JH;SHACHAK, M
通讯作者：
SHACHAK, M
影响因子：
4.4
作者：
Lei, Jiarui;Nepf, Heidi
通讯作者：
Nepf, Heidi
影响因子：
5.5
作者：
Eppinga, Maarten B.;Kaproth, Matthew A.;Molofsky, Jane
通讯作者：
Molofsky, Jane