Frequent regime shifts in trophic states in shallow lakes on the Boreal Plain: Alternative "unstable" states?

被引:86
|
作者
Bayley, S. E. [1 ]
Creed, I. F.
Sass, G. Z.
Wong, A. S.
机构
[1] Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada
[2] Univ Western Ontario, Dept Biol, London, ON N6A 5B7, Canada
[3] Univ Western Ontario, Dept Geog, London, ON N6A 5C2, Canada
关键词
D O I
10.4319/lo.2007.52.5.2002
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Shallow lakes are known to exhibit alternative states in their biotic structure. Lakes dominated by submersed aquatic vegetation (SAV) are "clear,'' while lakes dominated by algae (high concentrations of chlorophyll a [Chl a]) are "turbid.'' The roles of total phosphorus (TP) and SAV in defining these alternative states were examined for up to 6 yr in 24 naturally eutrophic shallow lakes (12.4-670.4 mu g TP L-1) with variable SAV cover (0-100%) on the western Boreal Plain in Alberta, Canada. Clear lakes had,18 mu g Chl a L-1. Sixty-seven percent of lakes were clear in any given year, but individual lakes did not remain clear over consecutive years. While 29% did not switch, 71% of lakes were unstable, with 57% switching states once and 14% switching more than once. To increase the temporal and spatial scale of analysis, we used Landsat Thematic Mapper satellite imagery (1984 2003) to classify clarity for up to 20 yr in 82 naturally eutrophic shallow lakes. Approximately 80% of lakes were unstable, with 7% switching once and more than 73% switching 2-9 times. Only 20% of lakes were stable and clear. Switches in lake clarity were related to TP but were also dependent on the abundance of SAV. For lakes with high SAV, the TP threshold for the transition from clear to turbid was 275 mu g TP L-1, while for lakes with low SAV, the TP threshold was 50 mu g TP L-1. Given the harsh winter conditions, including lakes with ice depths of up to 0.7 m and anoxia leading to winterkill of aquatic communities, these systems are strongly abiotically regulated and lack mechanisms that maintain a lake in a stable state.
引用
收藏
页码:2002 / 2012
页数:11
相关论文
共 50 条
  • [11] Do wetland lakes exhibit alternative stable states? Submersed aquatic vegetation and chlorophyll in western boreal shallow lakes
    Bayley, SE
    Prather, CM
    LIMNOLOGY AND OCEANOGRAPHY, 2003, 48 (06) : 2335 - 2345
  • [12] Evolutionary emergence of alternative stable states in shallow lakes
    Ardichvili, Alice Nadia
    Loeuille, Nicolas
    Dakos, Vasilis
    ECOLOGY LETTERS, 2023, 26 (05) : 692 - 705
  • [13] The legacy of large regime shifts in shallow lakes
    Hobbs, Joy M. Ramstack
    Hobbs, William O.
    Edlund, Mark B.
    Zimmer, Kyle D.
    Theissen, Kevin M.
    Hoidal, Natalie
    Domine, Leah M.
    Hanson, Mark A.
    Herwig, Brian R.
    Cotner, James B.
    ECOLOGICAL APPLICATIONS, 2016, 26 (08) : 2660 - 2674
  • [14] Alternative stable states in shallow lakes: What causes a shift?
    Blindow, I
    Hargeby, A
    Andersson, G
    STRUCTURING ROLE OF SUBBMERGED MACROPHYTES IN LAKES, 1998, 131 : 353 - 360
  • [15] Uniform carbon fluxes in shallow lakes in alternative stable states
    Zimmer, Kyle D.
    Hobbs, William O.
    Domine, Leah M.
    Herwig, Brian R.
    Hanson, Mark A.
    Cotner, James B.
    LIMNOLOGY AND OCEANOGRAPHY, 2016, 61 (01) : 330 - 340
  • [16] Precipitation-Induced Alternative Regime Switches in Shallow Lakes of the Boreal Plains (Alberta, Canada)
    Cobbaert, Danielle
    Wong, Agnes
    Bayley, Suzanne E.
    ECOSYSTEMS, 2014, 17 (03) : 535 - 549
  • [17] Precipitation-Induced Alternative Regime Switches in Shallow Lakes of the Boreal Plains (Alberta, Canada)
    Danielle Cobbaert
    Agnes Wong
    Suzanne E. Bayley
    Ecosystems, 2014, 17 : 535 - 549
  • [18] Regime shifts in shallow lakes explained by critical turbidity
    van Wijk, Dianneke
    Chang, Manqi
    Janssen, Annette B. G.
    Teurlincx, Sven
    Mooij, Wolf M.
    WATER RESEARCH, 2023, 242
  • [19] Alternative stable states and hydrological regime shifts in a large intermittent river
    Zipper, Sam
    Popescu, Ilinca
    Compare, Kyle
    Zhang, Chi
    Seybold, Erin C.
    ENVIRONMENTAL RESEARCH LETTERS, 2022, 17 (07)
  • [20] Regime shifts in shallow lakes: the importance of seasonal fish migration
    Christer Brönmark
    Jakob Brodersen
    Ben B. Chapman
    Alice Nicolle
    P. Anders Nilsson
    Christian Skov
    Lars-Anders Hansson
    Hydrobiologia, 2010, 646 : 91 - 100