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Use of shoreline vegetation by the European beaver [Castor fiber L.]

100%

Janiszewski P., Gugolek A., Lobanowska A.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

2006

tom 05

nr 2

Effect of long-term winter flooding on the vascular flora in the drawdown area of the Three Gorges Reservoir, China

84%

Wang Q., Yuan X., Liu H., Zhang Y., Cheng Z., Li B.

Polish Journal of Ecology

2012

tom 60

nr 1

The dam construction and water impoundment have extensively altered flow regime and riparian ecosystems. However, the effect of long-term winter flooding of reservoir on plants of drawdown area is poorly known. The Three Gorges Dam in China, the largest dam in the world, created a drawdown area of 348.93 km2 between 145 m and 175 m above sea level around its reservoir. The drawdown area was submerged for more than half year in winter and exposed in summer. In the summer of 2009, the vegetation of fourteen sites in the drawdown area was investigated to determine the impact of winter flooding on vascular flora and to explore flood-tolerant species for vegetation reconstruction. One hundred and seventy five species of 58 families were recorded in present work，which indicated that 55% of vascular flora species disappear or became rare. The number of perennial species decreased to 50%. Therophytes, with 87 taxa, were the dominant life form. Strictly aquatic species were rather scarce for summer drought. Mean vegetation cover in the drawdown area was more than 70%. Species richness and vegetation cover along the elevation gradient exhibited a negative pattern correlated with flooding duration. The remarkable reduction of plant richness, variation of life form composition and alternation of dominant species indicated the strong influence of long-term winter flooding on vascular flora. Cynodon dactylon and Cyperus rotundus was highly resistant to long-term winter flooding and summer drought. Eight hardwoods (Vitex negundo, Morus alba, Sapium sebiferum, Glochidion puberum, Rhus chinensis, Melia azedarach, Pterocarya stenoptera and Trema levigata) exhibited high tolerance to winter flooding and may be potential candidates for vegetation restoration.

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The stabilization and protection of shorelines using the broadleaf cattail and reed sweet grass

67%

Kowalik W., Pachuta K., Jeznach J.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

2013

tom 45

nr 1

The article presents the results of studies on the mechanical properties of the broadleaf cattail Typha latifolia and reed sweet grass Glyceria maxima. The necessary study samples were collected from Lake Urszulewskie near Sierpc, Poland. The experiment was conducted using an Instron 5966 universal tensile strength testing machine. Tensile forces and the tensile strength of the individual parts of both plant species, i.e. below-ground stems (rhizomes), base of the stem and above-ground stems, were determined and compared with each other. The STATISTICA program was used for analysis. The calculated tensile strength values were compared to data of selected tree, shrub and plant species provided by other authors.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

1 Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

1 Polish Journal of Ecology

1 Cheng Z.

1 Gugolek A.

1 Janiszewski P.

1 Jeznach J.

1 Kowalik W.

1 Li B.

1 Liu H.

1 Lobanowska A.

1 Pachuta K.

1 Wang Q.

1 Yuan X.

1 Zhang Y.

1 2013

1 2012

1 2006

Wyniki wyszukiwania

Use of shoreline vegetation by the European beaver [Castor fiber L.]

Effect of long-term winter flooding on the vascular flora in the drawdown area of the Three Gorges Reservoir, China

The stabilization and protection of shorelines using the broadleaf cattail and reed sweet grass