The wall of green:: The status of Cladophora glomerata on the northern shores of Lake Erie's eastern basin, 1995-2002

被引:91
作者
Higgins, SN [1 ]
Howell, ET
Hecky, RE
Guildford, SJ
Smith, RE
机构
[1] Univ Waterloo, Dept Biol, Waterloo, ON N2L 3G1, Canada
[2] Ontario Minist Environm & Energy, Environm Monitoring & Reporting Branch, Etobicoke, ON M9P 3V6, Canada
关键词
Cladophora; benthic algae; Lake Erie; Dreissena; water quality;
D O I
10.1016/S0380-1330(05)70283-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The biomass, areal coverage, algal bed characteristics, and tissue phosphorus concentrations of Cladophora glomerata were measured at 24 near shore rocky sites along the northern shoreline of Lake Erie's eastern basin between 1995-2002. Midsummer areal coverage at shallow depths (:5 5 m) ranged from 4-100%, with a median value of 96%. Cladophora biomass began accumulating at most sites during early May, and achieved maximum values by mid-July. Peak seasonal biomass ranged from < 1 to 940 g/m(2) dry mass (DM), with a median value of 171 g/m(2) DM. Nearshore water concentrations of total phosphorus (TP) were lower than during pre-phosphorus abatement years. However, Cladophora biomass levels were similar to reported values in those years. The midsummer "die off" occurred shortly after the biomass peak, when water temperatures neared 22.5 degrees C. Areal coverage declined after die-off to < 10%, mean filament lengths declined from 33 cm to < 1 cm, and mean biomass declined to < 1 g DM/m(2). Tissue phosphorus varied seasonally, with initial high values in early May (0.15 to 0.27% DM; median 0.23% DM) to midsummer seasonal low values during peak biomass (0.03 to 0.23% DM; median 0.06% DM). Cladophora biomass is sensitive to changes in phosphorus and light availability, and reductions in biomass previously achieved through phosphorus control may now be reversed because of increased water transparency and phosphorus availability to the benthos following establishment of dreissenids.
引用
收藏
页码:547 / 563
页数:17
相关论文
共 52 条
[1]  
AUER M T, 1980, Journal of Great Lakes Research, V6, P1
[2]  
AUER M T, 1982, Journal of Great Lakes Research, V8, P84
[3]  
AUER M T, 1982, Journal of Great Lakes Research, V8, P73
[4]  
BARTON D R, 1978, Journal of Great Lakes Research, V4, P27
[5]   ECOLOGY OF CLADOPHORA GLOMERATA (L) KUTZ IN SOUTHERN ONTARIO [J].
BELLIS, VJ ;
MCLARTY, DA .
JOURNAL OF PHYCOLOGY, 1967, 3 (02) :57-&
[6]   THE ECOLOGY OF RIVER ALGAE [J].
BLUM, JL .
BOTANICAL REVIEW, 1956, 22 (05) :291-341
[7]   Growth and survival of Escherichia coli and enterococci populations in the macro-alga Cladophora (Chlorophyta) [J].
Byappanahalli, MN ;
Shively, DA ;
Nevers, MB ;
Sadowsky, MJ ;
Whitman, RL .
FEMS MICROBIOLOGY ECOLOGY, 2003, 46 (02) :203-211
[8]  
CANALE R P, 1982, Journal of Great Lakes Research, V8, P126
[9]  
CANALE R P, 1982, Journal of Great Lakes Research, V8, P112
[10]  
Charlton MN, 1999, ECOVIS WORLD MG SER, P97