ОСОКОВО-СФАГНОВЫЕ СООБЩЕСТВА БОЛОТ ЦЕНТРАЛЬНОЙ ЧАСТИ ПРИВОЛЖСКОЙ ВОЗВЫШЕННОСТИ, "БОТАНИЧЕСКИЙ ЖУРНАЛ"

2014 ◽  
pp. 205-226
Author(s):  
И.В. БЛАГОВЕЩЕНСКИЙ
Keyword(s):  
Carex Lasiocarpa

Охарактеризованы растительные сообщества болот центральной части Приволжской возвышенности с участием Carex lasiocarpa, C. rostrata, C. limosa и Rhynchospora alba. Они отнесены к шести ассоциациям: Sphagno fallacis—Caricetum lasiocarpae; Comaro palustris—Caricetum lasiocarpae; Sphagno fallacis—Caricetum rostratae; Comaro palustris—Caricetum rostratae, Sphagno angustifolii—Caricetum limosae ass. nov. и Spagno—papillosi—Rhynchosporetum albae nom. nov. Сообщества двух последних ассоциаций в изучаемом регионе находятся на южной границе распространения.

scholarly journals Modeling the Spatial Distribution of Three Typical Dominant Wetland Vegetation Species’ Response to the Hydrological Gradient in a Ramsar Wetland, Honghe National Nature Reserve, Northeast China

Water ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 2041
Author(s):  
Dandan Yan ◽  
Zhaoqing Luan ◽  
Dandan Xu ◽  
Yuanyuan Xue ◽  
Dan Shi
Keyword(s):  
Spatial Distribution ◽  
Water Level ◽  
Northeast China ◽  
Nature Reserve ◽  
Wetland Vegetation ◽  
Vegetation Communities ◽  
National Nature Reserve ◽  
Carex Lasiocarpa ◽  
Vegetation Species ◽  
Calamagrostis Angustifolia

Water level fluctuations resulting from natural and anthropogenic factors have been projected to affect the functions and structures of wetland vegetation communities. Therefore, it is important to assess the impact of the hydrological gradient on wetland vegetation. This paper presents a case study on the Honghe National Nature Reserve (HNNR) in the Sanjiang Plain, located in Northeast China. In this study, 210 plots from 18 sampling line transects were sampled in 2011, 2012, and 2014 along the hydrological gradient. Using a Gaussian logistic regression model, we determined a relationship between three wetland plant species and a hydrologic indicator—a combination of the water level and soil moisture—and then applied that relationship to simulate the distribution of plants across a larger landscape by the geographic information system (GIS). The results show that the optimum ecological amplitude of Calamagrostis angustifolia to the hydrological gradient based on the probability of occurrence model was [0.09, 0.41], that of Carex lasiocarpa was [0.35, 0.57], and that of Carex pseudocuraica was [0.49, 0.77]. The optimum of Calamagrostis angustifolia was 0.25, Carex lasiocarpa was 0.46, and Carex pseudocuraica was 0.63. Spatial distribution probability maps were generated, as were maps detailing the distribution of the most suitable habitats for wetland vegetation species. Finally, the model simulation results were verified, showing that this approach can be employed to provide an accurate simulation of the spatial distribution pattern of wetland vegetation communities. Importantly, this study suggests that it may be possible to predict the spatial distribution of different species from the hydrological gradient.

scholarly journals The Effects of Water Levels and Interspecific Competition on Two Carex Species in a Temperate Wetland of Northeast China

2020 ◽  
Vol 12 (24) ◽  
pp. 10654
Author(s):  
Wenwen Tan ◽  
Li Sun ◽  
Xinhou Zhang ◽  
Changchun Song
Keyword(s):  
Spatial Distribution ◽  
Water Level ◽  
Interspecific Competition ◽  
Distribution Patterns ◽  
Wetland Plants ◽  
Water Levels ◽  
Carex Lasiocarpa ◽  
Temperate Wetland ◽  
The Relationship ◽  
Spatial Distribution Characteristic

Zonation along a water level is the main spatial distribution characteristic of wetland plants. This is mainly because of the influences of hydrological conditions and interspecific competition, which finally narrow the fundamental niche of a species to its realized niche. In the present study, a controlled experiment was conducted in order to analyze the relationship between Carex lasiocarpa/Carex pseudocuraica and Glyceria spiculosa, in conditions of three competitive treatments at four water levels. The results showed that in no competition, C. lasiocarpa preferred low water levels, but this preference receded when competing with G. spiculosa. In contrast, C. pseudocuraica had greater preference for low water level when competing with G. spiculosa. The root/shoot ratios of the two Carex species decreased with increasing water levels, but they were almost unaffected by different competition treatments. With the increase in water level during full competition with G. spiculosa, the competitive ability of C. lasiocarpa showed an increasing trend, whereas a contrary trend was observed in C. pseudocuraica. Our results suggested the effects of water levels and their interactions with interspecific competition varied between the two Carex species and played an important role in determining spatial distribution patterns and potential community succession of wetland plants.

Vegetation and nutrient status of northern Michigan fens

1978 ◽  
Vol 56 (24) ◽  
pp. 3044-3051 ◽  
Author(s):  
Christa R. Schwintzer
Keyword(s):  
Shallow Groundwater ◽  
Nutrient Status ◽  
Water Levels ◽  
Importance Value ◽  
Myrica Gale ◽  
Carex Aquatilis ◽  
Ph Values ◽  
Kettle Hole ◽  
Carex Lasiocarpa ◽  
Northern Michigan

The vegetation, selected characteristics of shallow groundwater, and depth to water were examined in five fens in northern Lower Michigan. The field layer was the dominant stratum in all five fens and contained a total of 85 vascular species with a mean density of 30 vascular species per stand. Carex lasiocarpa was the most prevalent dominant plant and attained a frequency–presence index (FPI) of 8000 of a possible 10 000 and a mean importance value of 33 of a possible 200. Other common dominants in decreasing order of FPI were Carex aquatilis (6640), Myrica gale (4636), and Andromeda glaucophylla (2000). Common subordinates were Hypericum virginicum (2639), Muhlenbergia glomerata (2466), and Campanula aparinoides (1400). The vegetation was relatively homogeneous as indicated by a homogeneity index of 58%.The shallow groundwaters were minerotrophic with pH values ranging from 5.7 to 7.0 and calcium concentrations of 11.0 to 75.0 mg/ℓ. Four of the fens were on floating mats and had relatively stable water levels while the fifth was on a grounded mat and was subject to substantial water level fluctuation.Three previously described alkaline lake-edge kettle-hole 'bog' communities were found to be similar to the fens in species composition and water chemistry.

scholarly journals The Ecological Response ofCarex lasiocarpaCommunity in the Riparian Wetlands to the Environmental Gradient of Water Depth in Sanjiang Plain, Northeast China

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Zhaoqing Luan ◽  
Zhongxin Wang ◽  
Dandan Yan ◽  
Guihua Liu ◽  
Yingying Xu
Keyword(s):  
Water Depth ◽  
Environmental Gradient ◽  
Diversity Index ◽  
Gaussian Model ◽  
Sanjiang Plain ◽  
Average Height ◽  
Riparian Wetlands ◽  
Carex Lasiocarpa ◽  
Classification Tool ◽  
Height Data

The response ofCarex lasiocarpain riparian wetlands in Sanjiang Plain to the environmental gradient of water depth was analyzed by using the Gaussian Model based on the biomass and average height data, and the ecological water-depth amplitude ofCarex lasiocarpawas derived. The results indicated that the optimum ecological water-depth amplitude ofCarex lasiocarpabased on biomass was [13.45 cm, 29.78 cm], while the optimum ecological water-depth amplitude ofCarex lasiocarpabased on average height was [2.31 cm, 40.11 cm]. The intersection of the ecological water-depth amplitudes based on biomass and height confirmed that the optimum ecological water-depth amplitude ofCarex lasiocarpawas [13.45 cm, 29.78 cm] and the optimist growing water-depth ofCarex lasiocarpawas 21.4 cm. The TWINSPAN, a polythetic and divisive classification tool, was used to classify the wetland ecological series into 6 associations. Result of TWINSPAN matrix classification reflected an obvious environmental gradient in these associations: water-depth gradient. The relation of biodiversity ofCarex lasiocarpacommunity and water depth was determined by calculating the diversity index of each association.

The Effects of Soil Drying on the Growth of a Dominant Peatland Species, Carex lasiocarpa

Wetlands ◽  
2017 ◽  
Vol 37 (6) ◽  
pp. 1135-1143 ◽  
Author(s):  
Jihong Yuan ◽  
Ping Wang ◽  
Jacob Weiner ◽  
Hongfeng Bian ◽  
Zhanhui Tang ◽  
...  
Keyword(s):  
Soil Drying ◽  
Carex Lasiocarpa

Vertical migration and distribution of added dissolved iron in Carex lasiocarpa marsh soil

2012 ◽  
Vol 44 ◽  
pp. 36-43 ◽  
Author(s):  
Yuan-chun Zou ◽  
Xiao-fei Yu ◽  
Xian-guo Lu ◽  
Ming Jiang
Keyword(s):  
Vertical Migration ◽  
Marsh Soil ◽  
Dissolved Iron ◽  
Carex Lasiocarpa
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