The Effect of Marsh Age on Ecosystem Function in a Rapidly Transgressing Marsh
The Effect of Marsh Age on Ecosystem Function in a Rapidly Transgressing Marsh
复制标题
沼泽年龄对快速海侵沼泽生态系统功能的影响
DOI：
10.1007/s10021-021-00652-6
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Kirwan, Matthew L.
中科院分区：
文献类型：
--
作者：
Langston, Amy K.;Coleman, Daniel J.;Jung, Nathalie W.;Shawler, Justin L.;Smith, Alexander J.;Williams, Bethany L.;Wittyngham, Serina S.;Chambers, Randolph M.;Perry, James E.;Kirwan, Matthew L.
海平面上升导致沼泽地迁移到整个北美的沿海森林。沼泽迁移是面对海平面上升沼泽生存的主要机制，并导致植被群落的根本重组。然而，这些变化的生态影响仍然未知。为了评估湿地迁移对生态系统功能的影响，我们比较了新老盐沼之间的栖息地，初级生产力，垂直增长，养分循环和碳积累古德温岛（弗吉尼亚州，美国）盐沼向陆地迁移到迅速撤退的沿海森林。利用历史图像和沉积物岩心的放射性同位素测年，我们确定了整个景观的沼泽年龄（< 3至约616年）。我们发现，盐沼功能一般更依赖于海拔和/或景观位置比沼泽年龄。初级生产力和养分循环（%C和%N土壤含量）没有显着变化，沼泽年龄。增加和碳积累速率变化可预见的海拔在旧沼泽，但不是在新的沼泽。相反，土壤形成的趋势是由芦苇的殖民化控制的，芦苇是沿着大西洋海岸迁移的沼泽森林边界的主要植物。植被地带性模式在旧沼泽中定义更清楚，表明栖息地类型需要时间来发展。然而，这些植被差异并没有转化为一贯不同的生态功能。这些观察结果表明，沼泽迁移不会导致新老沼泽之间的生态功能的永久性差异，而生态功能将收敛作为新的沼泽年龄。
Sea-level rise is leading to the migration of marshes into coastal forests throughout North America. Marsh migration represents a primary mechanism for marsh survival in the face of sea-level rise and leads to a fundamental reorganization of vegetation communities. Yet, the ecological implications of these changes remain unknown. To evaluate the effect of marsh migration on ecosystem function, we compared habitat, primary production, vertical accretion, nutrient cycling, and carbon accumulation between new and old salt marsh on Goodwin Island (Virginia, USA) where salt marsh is migrating landward into rapidly retreating coastal forest. Using historical imagery and radioisotopic dating of sediment cores, we determined marsh age (< 3 to approximately 616 years) across the landscape. We found that salt marsh functions generally depended more on elevation and/or landscape position than marsh age. Primary production and nutrient cycling (%C and %N soil content) did not vary significantly with marsh age. Accretion and carbon accumulation rates varied predictably with elevation in old marsh but not in new marsh. Instead, trends in soil formation were controlled by the colonization ofPhragmites australis, a dominant plant in migrating marsh-forest boundaries along the Atlantic Coast. Vegetation zonation patterns were more clearly defined in old marsh, indicating that habitat types take time to develop. However, these vegetation differences did not translate to consistently different ecological functions. These observations suggest that marsh migration does not lead to permanent differences in ecological functions between new and old marsh, rather ecological functions will converge as new marsh ages.
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DOI：
10.1007/bf02823716
发表时间：
2003-04-01
期刊：
ESTUARIES
影响因子：
--
作者：
Chambers, RM;Osgood, DT;Montalto, F
通讯作者：
Montalto, F
美国佐治亚州阿尔塔马哈河口沙洲潮汐沼泽的生态系统发展
DOI：
--
发表时间：
2009
期刊：
Wetlands (Wilmington, N.C.)
影响因子：
--
作者：
Kandice Krull;C. Craft
通讯作者：
C. Craft
影响因子：
1.8
作者：
Rooth, J. E.;Stevenson, J. C.
通讯作者：
Stevenson, J. C.
美国切萨皮克湾的大规模高地向湿地转变弥补了历史上的沼泽损失
影响因子：
2.7
作者：
Schieder, Nathalie W.;Walters, David C.;Kirwan, Matthew L.
通讯作者：
Kirwan, Matthew L.
美国路易斯安那州东南部秃柏-水图珀洛沼泽退化为沼泽和开放水域：不可逆转的轨迹？
影响因子：
4.6
作者：
G. Shaffer;W. B. Wood;S. Hoeppner;Thais E. Perkins;Jason A. Zoller;Demetra Kandalepas
通讯作者：
Demetra Kandalepas