caa a22 4500 445890991 CHVBK 20180317145616.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10750-011-0641-4 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0641-4 Pattern of nutrient availability and plant community assemblage in Everglades Tree Islands, Florida, USA [Elektronische Daten] [J. Espinar, M. Ross, J. Sah] We address the relative importance of nutrient availability in relation to other physical and biological factors in determining plant community assemblages around Everglades Tree Islands (Everglades National Park, Florida, USA). We carried out a one-time survey of elevation, soil, water level and vegetation structure and composition at 138 plots located along transects in three tree islands in the Park's major drainage basin. We used an RDA variance partitioning technique to assess the relative importance of nutrient availability (soil N and P) and other factors in explaining herb and tree assemblages of tree island tail and surrounded marshes. The upland areas of the tree islands accumulate P and show low N concentration, producing a strong island-wide gradient in soil N:P ratio. While soil N:P ratio plays a significant role in determining herb layer and tree layer community assemblage in tree island tails, nevertheless part of its variance is shared with hydrology. The total species variance explained by the predictors is very low. We define a strong gradient in nutrient availability (soil N:P ratio) closely related to hydrology. Hydrology and nutrient availability are both factors influencing community assemblages around tree islands, nevertheless both seem to be acting together and in a complex mechanism. Future research should be focused on segregating these two factors in order to determine whether nutrient leaching from tree islands is a factor determining community assemblages and local landscape pattern in the Everglades, and how this process might be affected by water management. Springer Science+Business Media B.V., 2011 Biogeochemical hot-spot nationallicence N:P ratio nationallicence Phosphorus nationallicence Self-assembly nationallicence Spatial patterns nationallicence Landscape ecology nationallicence Wetlands nationallicence Espinar J. Estación Biológica de Doñana (EBD-CSIC), Avda. Américo Vespucio s/n, Isla de la Cartuja, 41092, Sevilla, Spain aut Ross M. Southeast Environmental Research Center, Florida International University, Modesto Maidique Campus, 33199, Miami, FL, USA aut Sah J. Southeast Environmental Research Center, Florida International University, Modesto Maidique Campus, 33199, Miami, FL, USA aut Hydrobiologia Springer Netherlands 667/1(2011-06-01), 89-99 0018-8158 667:1<89 2011 667 10750 https://doi.org/10.1007/s10750-011-0641-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0641-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Espinar J. Estación Biológica de Doñana (EBD-CSIC), Avda. Américo Vespucio s/n, Isla de la Cartuja, 41092, Sevilla, Spain aut NATIONALLICENCE 700 1- Ross M. Southeast Environmental Research Center, Florida International University, Modesto Maidique Campus, 33199, Miami, FL, USA aut NATIONALLICENCE 700 1- Sah J. Southeast Environmental Research Center, Florida International University, Modesto Maidique Campus, 33199, Miami, FL, USA aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 667/1(2011-06-01), 89-99 0018-8158 667:1<89 2011 667 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer