caa a22 4500 467885176 CHVBK 20180406152732.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s10021-004-0053-7 doi (NATIONALLICENCE)springer-10.1007/s10021-004-0053-7 Multi-Scale Controls on Water Quality Effects of Submerged Aquatic Vegetation in the Tidal Freshwater Hudson River [Elektronische Daten] [Stuart Findlay, William Nieder, Elizabeth Blair, David Fischer] Patches of submerged vegetation can be important sites of primary production and habitat for organisms in many aquatic ecosystems. In the tidal freshwater Hudson River they make up about 6% of the river bottom area. Direct sampling of water masses passing through patches of vegetation and week-long continuous monitoring of water characteristics were used to determine plant effects on dissolved oxygen and suspended sediments. Vegetated areas could have dissolved oxygen concentrations substantially higher than in the main channel and suspended sediments and turbidity were frequently higher in vegetated areas. Patches of Vallisneria americana had variable capacity to maintain super-saturated oxygen concentrations; patch size accounted for some of the variability whereas larger-scale differences in main-channel influent water also contributed. Differences in turbidity among sites were harder to account for; width of plant beds and abundance of neighboring vegetated areas contributed weakly to predictions of local turbidity. Functional heterogeneity within ecosystems is common and attempts to explain variability may require understanding different controlling factors for different functions and appreciating that factors operate at multiple scales. Springer Science+Business Media, Inc., 2006 Vallisneria americana nationallicence dissolved oxygen nationallicence turbidity nationallicence patch nationallicence neighborhood nationallicence ecological function nationallicence Findlay Stuart Institute of Ecosystem Studies, Box AB (65 Sharon Turnpike), 12545, New York, Millbrook, USA aut Nieder William Hudson River NERR/NYSDEC, Bard College Field Station, 12504, New York, Annandale, USA aut Blair Elizabeth Hudson River NERR/NYSDEC, Bard College Field Station, 12504, New York, Annandale, USA aut Fischer David Institute of Ecosystem Studies, Box AB (65 Sharon Turnpike), 12545, New York, Millbrook, USA aut Ecosystems Springer-Verlag; www.springer-ny.com 9/1(2006-02-01), 84-96 1432-9840 9:1<84 2006 9 10021 https://doi.org/10.1007/s10021-004-0053-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10021-004-0053-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Findlay Stuart Institute of Ecosystem Studies, Box AB (65 Sharon Turnpike), 12545, New York, Millbrook, USA aut NATIONALLICENCE 700 1- Nieder William Hudson River NERR/NYSDEC, Bard College Field Station, 12504, New York, Annandale, USA aut NATIONALLICENCE 700 1- Blair Elizabeth Hudson River NERR/NYSDEC, Bard College Field Station, 12504, New York, Annandale, USA aut NATIONALLICENCE 700 1- Fischer David Institute of Ecosystem Studies, Box AB (65 Sharon Turnpike), 12545, New York, Millbrook, USA aut NATIONALLICENCE 773 0- Ecosystems Springer-Verlag; www.springer-ny.com 9/1(2006-02-01), 84-96 1432-9840 9:1<84 2006 9 10021 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer