Distribution of submerged macrophytes along environmental gradients in large, shallow Lake Balaton (Hungary)

Istvánovics, Vera; Honti, Márk; Kovács, Attila; Osztoics, András

doi:10.1016/j.aquabot.2007.12.008

Cited by 61 publications

(51 citation statements)

References 31 publications

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“…The optimum depth for the growth of the aquatic vegetation in Lake Taihu has been reported as less than 2.0 m [14,41]. Similar findings were obtained in other studies of coastal and shallow lakes [43,57]. The average water depth in the six areas of the present study increased in the following order: East Lake Taihu (1.76 ± 0.37 m; average ± standard deviation), Xukou Bay [58].…”

Section: Lake Topography and Wind Wave Disturbancesupporting

confidence: 90%

Mapping Aquatic Vegetation in a Large, Shallow Eutrophic Lake: A Frequency-Based Approach Using Multiple Years of MODIS Data

et al. 2015

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Aquatic vegetation serves many important ecological and socioeconomic functions in lake ecosystems. The presence of floating algae poses difficulties for accurately estimating the distribution of aquatic vegetation in eutrophic lakes. We present an approach to map the distribution of aquatic vegetation in Lake Taihu (a large, shallow eutrophic lake in China) and reduce the influence of floating algae on aquatic vegetation mapping. the 11 years. Our findings suggest that (1) the proposed approach can be used to map the distribution of aquatic vegetation in eutrophic algae-rich waters and (2) dramatic changes occurred in the distribution of aquatic vegetation in Lake Taihu during the 11-year study.

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Section: Lake Topography and Wind Wave Disturbancesupporting

confidence: 90%

Mapping Aquatic Vegetation in a Large, Shallow Eutrophic Lake: A Frequency-Based Approach Using Multiple Years of MODIS Data

et al. 2015

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“…Its north-western shore is rather protected, has a constant, rather steep depth gradient, its sediments are silty and more nutrient-rich whereas the south-eastern shore (hereafter called "northern" and "southern" shore, respectively, for sake of simplicity) is more wave exposed, with a sandbar all along the shore creating a shallow water zone (0.5-1 m) of larger grained sediment (Entz and Sebestye´n, 1942;Ma´te´, 1987;Zlinszky et al, 2008). Prevailing north-north-eastern winds (To´th, 1960;Istva´novics et al, 2008) are the underlying cause for several differences in shore characteristics, as they entail the accumulation of finer textured sediments on the northern site and the deposition of bigger particles on the southern shore (Ma´te´, 1987). Finer grained sediments are generally more nutrient rich, and support better macrophyte growth (Barko and Smart, 1986).…”

Section: Introductionmentioning

confidence: 99%

Comparing the morphology ofPotamogeton perfoliatusL. along environmental gradients in Lake Balaton (Hungary)

Vári

Tóth

Csontos

2010

Ann. Limnol. - Int. J. Lim.

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-Potamogeton perfoliatus readily adopts different morphological forms, and is therefore especially suitable for investigating variations of aquatic plants' morphology according to different environmental conditions. This paper discusses the morphological diversity of P. perfoliatus at different sites in Lake Balaton, where it occurs as one of the dominant species. We measured 11 morphological variables which were analyzed statistically within the environmental gradients present in the Lake (gradients in trophic condition, water depth and in wave exposure). We found morphological differences between the plants growing on the southern shallow shore which is more exposed to waves and those growing on the northern, deeper and sheltered shore as well as differences along the trophic and the water depth gradient. On the northern shore plants were significantly longer, their internodes were longer and their leaves were relatively thinner (greater Standard Leaf Area). Plants were larger in the more nutrient rich western basins of the Lake and also showed morphological changes along the water depth gradient. The different degrees of wave exposure probably interact partly with trophic differences due to lake morphology. However, we proved that modifications in plant morphology, of which some might be adaptive and therefore of importance in a changing environment, do occur in the common, submerged macrophyte P. perfoliatus in Lake Balaton.

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“…The similar phenomena were observed in many filed investigations on submerged plants, which found the plants distributed at narrow lake bend of littoral zones, rather than continuously distribute in circularly littoral zone (Yu et al 1996;Istvá-novics et al 2008;Zhu unpublished data). Since light is the primary factor determining the maximum colonization depth of submerged macrophytes in a variety of lakes (Spence 1982;Istvánovics et al 2008;Zhu et al 2012a;Christia et al 2014), the major reason of V. natans in Lake Erhai grown within 5 m water depth is that the trophic status of Lake Erhai has transformed mesotrophication to eutrophication (Fu et al 2013;Li et al 2015). This is because that high nutrients can strongly enhance the growth of phytoplankton or epiphytes on plants (Huang et al 2014), leading to algal bloom in 1996 and 2003, respectively, accompanied by a considerable reduction in light availability along water depth.…”

Section: Discussionmentioning

confidence: 99%

“…Due to the light intensity, submerged macrophytes grow particularly well in littoral waters and organize themselves in patches of different sizes (Spence 1982;Zhu et al 2012a;Søndergaard et al 2013). However, shallow waters are often exposed to strong flow conditions due to waves and currents (Denny 1988;Henry and Myrhaug 2013), and most submerged macrophytes dominate in the wind-protected littoral or lake bends in natural lakes (Yu et al 1996;Istvánovics et al 2008). Therefore, during their evolution, the resistances against hydraulic force are vital for the survivor of submerged macrophytes.…”

Section: Introductionmentioning

confidence: 99%

Associations between the morphology and biomechanical properties of submerged macrophytes: implications for its survival and distribution in Lake Erhai

Zhu

Cao

2015

Environ Earth Sci

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Submerged macrophytes mainly distribute in the wind-protected littoral zones, rather than continuously distribute around the lake due to mechanical damage by strong wave. However, it is unknown how the biomechanical properties, the key targets against mechanical stress, contribute to its survival and distribution in natural aquatic ecosystem. In this study, the distribution, plant growth, and leaf biomechanical and morphological traits of different segments of Vallisneria natans were examined at 25 sites with three wind strength [sites exposed to strong ES wind (HW), sites exposed to moderate ES wind (MW) and sites sheltered by lakeshore with weak wind disturbance], in Lake Erhai, of Yunnan Province, China. Results showed that V. natans mainly distributed in the wind-protected eastern and northern littoral zones within 5 m water depth. The smallest plant growth, strongest and least flexible leaves were at MW, indicating that V. natans is prone to dominate the littoral zones exposed to strong but short wave. Additionally, the high plant growth and relatively stronger and less flexible leaves at HW suggested that the maximization of photosynthesis was at the cost of reduced biomechanical properties and increased drag forces from similar waves, which were unfavourable to complete their life cycles and ultimately reduce the survival and distribution of V. natans under strong wave disturbance. The significant associations between the biomechanical and morphological traits may trigger trade-offs between the mechanical resistance and other plant functions, such as photosynthesis, ultimately determining survival and distribution of submerged macrophytes in natural aquatic ecosystems.

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Distribution of submerged macrophytes along environmental gradients in large, shallow Lake Balaton (Hungary)

Cited by 61 publications

References 31 publications

Mapping Aquatic Vegetation in a Large, Shallow Eutrophic Lake: A Frequency-Based Approach Using Multiple Years of MODIS Data

Mapping Aquatic Vegetation in a Large, Shallow Eutrophic Lake: A Frequency-Based Approach Using Multiple Years of MODIS Data

Comparing the morphology ofPotamogeton perfoliatusL. along environmental gradients in Lake Balaton (Hungary)

Associations between the morphology and biomechanical properties of submerged macrophytes: implications for its survival and distribution in Lake Erhai

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