The aquatic macrophyte seed bank in Lake Onalaska, Wisconsin

被引:0
|
作者
McFarland, DG [1 ]
Rogers, SJ [1 ]
机构
[1] USA, Engineer Waterways Expt Stn, Vicksburg, MS 39180 USA
来源
关键词
aquatic plants; Vallisneria americana; Myriophyllum spicatum; sexual reproduction; germination;
D O I
暂无
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Submersed aquatic vegetation, dominated by Vallisneria americana Michx., declined dramatically in Lake Onalaska (Navigation Pool 7, on the Upper Mississippi River) following drought conditions in the late 1980s. Coinciding with the decline were marked increases in the abundance of phyllum spicatum L., particularly in areas vacated by A. americana. Recent evidence indicates that much of the lake has remained unvegetated, but that since 1994, beds of V. americana have made a partial recovery. While the production of vegetative propagules may largely account for increases in populations of both species, the extent to which seed production may contribute to their expansion in the lake is unknown. To assess the germination potential and distribution of the aquatic macrophyte seed bank in Lake Onalaska, sediment cores (5 cm deep) were collected from 74 sampling sites in July 1996. Seedling emergence from sediments was observed in an environmental growth chamber operated at 25 C and a 14-hr photoperiod over a period of eight weeks. Fifteen species of aquatic macrophytes germinated in sediments from 55 sites. V. americana seedlings emerged from sediments from 36 sites throughout the lake, but were most prevalent in sediments collected within or downstream (within 250 m) of established V. americana beds. Seedlings of M. spicatum emerged from only two collected sediments that had supported this species in protected areas. These findings suggest that seed production may play a greater role in the dispersal of V. americana than M. spicatum, and further emphasize basic differences in their survival strategies, particularly in flowing water systems.
引用
收藏
页码:33 / 39
页数:7
相关论文
共 50 条
  • [21] Aquatic macrophyte richness in Danish lakes in relation to alkalinity, transparency, and lake area
    Vestergaard, O
    Sand-Jensen, K
    CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 2000, 57 (10) : 2022 - 2031
  • [22] Ecological engineering in a eutrophic lake: A case study of large aquatic macrophyte enclosures in Baima Lake, China
    Li, Qiang
    Wan, Pengwei
    Han, Chengyin
    Dai, Xiaolin
    Hua, Xuekun
    Wang, Yongnian
    Zhang, Kai
    Cai, Sulin
    Tian, Xingjun
    LIMNOLOGICA, 2021, 90
  • [23] IMPACT OF HARVESTING ON AQUATIC PLANT-COMMUNITIES IN LAKE WINGRA, WISCONSIN
    NICHOLS, SA
    LATHROP, RC
    JOURNAL OF AQUATIC PLANT MANAGEMENT, 1994, 32 : 33 - 36
  • [24] Spatial heterogeneity of the seed bank at a peat lake in Australia
    Ling, Joanne E.
    Wen, Li
    Ellis, Ben
    Krogh, Martin
    MARINE AND FRESHWATER RESEARCH, 2022, 73 (06) : 774 - 791
  • [25] Plant Macrofossils Reveal Aquatic Macrophyte Successions of a Typical Shallow Lake (Huanggai Lake, China) in the Past Century
    Cheng, Qijuan
    Li, Liangfang
    Dong, Xuhui
    Li, Yan
    Kattel, Giri
    PLANTS-BASEL, 2022, 11 (11):
  • [26] Artificial Regulation of Water Level and Its Effect on Aquatic Macrophyte Distribution in Taihu Lake
    Zhao, Dehua
    Jiang, Hao
    Cai, Ying
    An, Shuqing
    PLOS ONE, 2012, 7 (09):
  • [27] Macrophyte Restoration Promotes Lake Microbial Carbon Pump to Enhance Aquatic Carbon Sequestration
    Chen, He
    Xing, Peng
    Kao, Shuhji
    An, Shilin
    Mao, Zhendu
    Fan, Shiming
    Li, Biao
    Yan, Qingyun
    Wu, Qinglong L.
    GLOBAL CHANGE BIOLOGY, 2025, 31 (02)
  • [28] Changes in sediment seed-bank composition of invaded macrophyte communities in a thermal river
    Vojtko, Anna E.
    Mesterhazy, Attila
    Suveges, Kristof
    Valko, Orsolya
    Lukacs, Balazs A.
    FRESHWATER BIOLOGY, 2017, 62 (06) : 1024 - 1035
  • [29] SUBMERGED MACROPHYTE SEED BANK IN A MEDITERRANEAN TEMPORARY MARSH - ABUNDANCE AND RELATIONSHIP WITH ESTABLISHED VEGETATION
    GRILLAS, P
    GARCIAMURILLO, P
    GEERTZHANSEN, O
    MARBA, N
    MONTES, C
    DUARTE, CM
    HAM, LT
    GROSSMANN, A
    OECOLOGIA, 1993, 94 (01) : 1 - 6
  • [30] A MACROPHYTE SUBMODEL FOR AQUATIC ECOSYSTEMS
    COLLINS, CD
    WLOSINSKI, JH
    AQUATIC BOTANY, 1989, 33 (3-4) : 191 - 206