Table 2

Lake Leland Integrated Aquatic Plant Management Plan


Table 2: Average dry weight and standard deviation (SD) for plants collected at 1, 2, and 3 meter depths at five sites in Lake Leland in August 1997. If site and depths are not listed, the plant biomass was zero.

Date Site Depth (m) Species and Common Name Ave. dry Wt (g/m2) SD
8/27/97 1 1 Ceratophyllum demersum (coontail)   8.48 10.32
8/27/97 1 1 Egeria densa (Brazilian elodea) 33.10 26.82
8/27/97 1 1 Elodea candensis (common elodea) 12.87 18.74
8/27/97 1 1 Nitella sp. (stonewort)   1.10   1.85
8/27/97 1 1 Potamogeton robbinsii (fernleaf pondweed) 87.76 39.97
8/27/97 1 1 Nuphar lutea (yellow water-lily) 36.53 63.27
8/27/97 1 1 Potamogeton sp. (thin-leaf pondweed)   0.15 0.25
8/27/97 1 2 Ceratophyllum demersum (coontail)   0.44 0.76
8/27/97 1 2 Egeria densa (Brazilian elodea) 222.83 7.86
8/27/97 1 3 Egeria densa (Brazilian elodea) 42.67 15.43
8/27/97 2 2 Egeria densa (Brazilian elodea)    0.08   0.14
8/27/97 3 1 Ceratophyllum demersum (coontail)    0.01   0.02
8/27/97 3 1 Egeria densa (Brazilian elodea)    0.31   0.34
8/27/97 3 1 Nuphar lutea (yellow water-lily) 41.97 66.12
8/27/97 3 1 Potamogeton praelongus (whitestem pondweed)    0.57   0.99
8/27/97 3 1 Potamogeton robbinsii (fernleaf pondweed)    4.86   5.32
8/27/97 3 1 Potamogeton sp. (thin leaf pondweed)    0.02   0.03
8/27/97 3 2 Potamogeton praelongus (whitestem pondweed)    9.25 12.60
8/27/97 3 2 Potamogeton robbinsii (fernleaf pondweed)    0.27 0.47
8/27/97 4 2 Egeria densa (Brazilian elodea)    0.30 0.52
8/27/97 4 3 Ceratophyllum demersum (coontail)    0.22 0.38
8/11/97 5 1 Egeria densa (Brazilian elodea) 14.91 15.53
8/11/97 5 1 Elodea candensis (common elodea)    9.06 12.96
8/11/97 5 1 Potamogeton praelongus (whitestem pondweed)    0.63   1.10
8/11/97 5 1 Potamogeton robbinsii (fernleaf pondweed)    2.19   1.92
8/11/97 5 1 Freshwater Sponge    3.81   6.60
8/11/97 5 2 Egeria densa (Brazilian elodea)    0.49   0.84
8/11/97 5 2 Potamogeton praelongus (whitestem pondweed)    0.07   0.13
8/11/97 5 2 Potamogeton robbinsii (fernleaf pondweed)    0.18   0.31

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Contact Kathy Hamel by e-mail at kham461@ecy.wa.gov