Mangrove structure, litter and macroalgal productivity in a northern‐most forest of Florida
Mangrove structure, litter and macroalgal productivity in a northern‐most forest of Florida
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佛罗里达州最北部森林的红树林结构、凋落物和大型藻类生产力
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发表时间：
1999
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通讯作者：
C. Dawes
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作者：
C. Dawes
芒果树控制了坦帕湾内的10个漫溢岛屿，形成了佛罗里达西海岸最北端的红树林。平均株数和断面积分别为5040株/公顷和20.5 m2/公顷。基部面积为1.1（白骨壤（Avicennia germinans（L.）Stern）、总状Laguncularia racemosa Gaertner（2.6 m2 ha-1）、R. mangle）。蟑螂湾红树林是小（5.8-7.0米高）相比，南部佛罗里达和加勒比海的沿海森林。凋落物总产量为12个月的时间是最大的边缘（7.4克干重m-2天-1）和内部（8.7克干重m-2天-1）与两个区域没有显着差异的领域在9月。平均凋落物（3.1克净重m-2天-1）是类似的热带加勒比海的红树。叶占68的凋落物和生殖物质为6，类似于热带河流和过洗海洋被子植物群落在墨西哥海岸。虽然坦帕湾的红树林身材矮小，遭受寒冷的破坏和偶尔的霜冻，但它们的凋落物在生物量上与更多的热带红树林相似。然而，他们的繁殖输出是低的基础上凋落物与更多的热带红树林表明，北方扩展是低于最佳。与加勒比海的红树相比，大型藻类的多样性较低（10个物种）。大型藻类草皮（0.8 g C m-2 d-1）和萌发芽生菌气托真菌群落（2.7 g C m-2 d-1）的生产力水平等于或高于加勒比海红树林的生产力水平。
Rhizophora mangle L. dominated 10 overwash islands within Tampa Bay forming the northernmost mangrove forests on the west coast of Florida. The mean number of trees and basal area were 5040 trees ha-1 and 20.5 m2 ha-1, respectively. Basal areas ranged from 1.1 (Avicennia germinans (L.) Stern), to 2.6 m2 ha-1 (Laguncularia racemosa Gaertner), to 16.8 (R. mangle). Cockroach Bay mangroves are small (5.8–7.0 m tall) versus coastal forests of south Florida and the Caribbean. Total litter production for a 12 month period was maximal in September for fringing (7.4 g d wt m-2 d-1) and interior (8.7 g d wt m-2 d-1) areas with the two zones not being significantly different. Average litter fall (3.1 g d wt m-2 d-1) was similar to more tropical Caribbean mangals. Leaves accounted for 68 of the litter and reproductive material for 6, being similar to tropical riverine and overwash marine angiosperm communities on the Mexican coast. Although mangrove forests in Tampa Bay are small in stature and experience cold damage and occasional frosts, their litter fall is similar in biomass to that of more tropical mangals. However, their reproductive output is low based on litter fall versus more tropical mangals suggesting that the northern extension is less than optimum. Macroalgal diversity was low (10 species) as compared to Caribbean mangals. Macroalgal turf (0.8 g C m-2 d-1) and epiphyte communities of A.germinans pneumatophores (2.7 g C m-2 d-1) have productivity levels that are equal to or greater than those of Caribbean mangals.