In the United States, Rhizophora mangle L. populations have established in saltmarsh communities at the northern extent of its range in Guana Tolomata Matanzas National Estuarine Research Reserve, near St. Augustine, FL. This two-year study monitored the growth and survivorship of propagules planted in the intertidal band dominated by Spartina alterniflora Loisel and mangroves. Propagules in the S. alterniflora microhabitat grew more than twice as fast, had a greater number of leaves per plant, and produced more sets of branches and flower buds than those growing under the mangrove canopy. Differences in growth were likely due to the 2.7 times greater mean monthly insolation in the Spartina microhabitat during the spring-summer growing season. Individuals persisted beneath the mangrove canopy and may take advantage of increased light availability from canopy gaps created by extreme storm events. Despite the 67% mortality from herbivory, wind gusts, storm surge, and extreme high tides, surviving R. mangle seedlings reached maturity in the unshaded and warmer microclimate of the low-lying saltmarsh vegetation. Spartina alterniflora may serve as a facilitator during the cotyledon phase of R. mangle and did not inhibit the success of the seedling establishment, providing a mechanism by which dispersed R. mangle propagules may spread northward into saltmarsh communities.

在美国，红海撕裂L.人群已经在其位于瓜纳Tolomata马坦萨斯全国港湾研究储备，附近的圣奥古斯丁，佛罗里达州范围的北部程度建立了盐沼社区。这项为期两年的研究监测了以互花米草， Loisel和红树林为主的潮间带中繁殖繁殖体的生长和存活情况。互花米草微生境中的繁殖体的生长速度是红树林冠层下的两倍以上，每株植物的叶片数量更多，并且产生更多的分支和花蕾。增长的差异可能是由于Spartina的平均每月日射量大2.7倍春夏季生长季节中的微生境。个人坚持在红树林的树冠下，可能会利用由极端风暴事件造成的树冠间隙带来的更多光照利用。尽管食草，阵风，风暴潮和极高的潮汐导致67％的死亡率，但幸存的R. mangle幼苗在低洼盐沼植被的无阴影且温暖的微气候中达到了成熟。互花米草可在曼格氏菌的子叶​​期中充当促进剂，并且不抑制幼苗建立的成功，提供了分散的曼格氏菌繁殖体向北扩散到盐沼群落的机制。