Relationships between water level fluctuations and vegetation diversity in shallow water of New Zealand lakes

Riis, Tenna; Hawes, Ian

doi:10.1016/s0304-3770(02)00074-8

Cited by 160 publications

(105 citation statements)

References 18 publications

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“…As a common index in ecology, Shannon's diversity index (SHDI) was used to estimate plant diversity (Riis and Hawes, 2002). This index was calculated using the following formula:…”

Section: Index Calculationsmentioning

confidence: 99%

Effects of plant diversity on soil erosion for different vegetation patterns

Hou

Wang²,

et al. 2016

CATENA

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Vegetation effectively prevents soil erosion. However the relationship between plant diversity and soil erosion remains ambiguous under various environmental conditions. To explore the role that plant diversity plays in soil erosion, this study was conducted in the Three-River-Source region, located in the hinterlands of the Qinghai-Tibet Plateau, China. After examining 99 plots within the study area, and analyzing the soil 137 Cs inventory within the plots, we found that with a greater number of plants distributed within an aggregation pattern, there was greater interception of the soil particles by the vegetation patch. This phenomenon results in a more developed vegetation patch that can support greater vegetation coverage and higher plant diversity than it previously could. Although a positive correlation exists between plant diversity and vegetation coverage, the relationship between the extent of soil erosion and plant diversity is modulated by the vegetation pattern. When plants are distributed in a relatively homogeneous pattern, vegetation coverage decreases with increasing plant diversity, which leads to increased soil erosion. When plants are distributed between a homogenous and a heterogeneous pattern, no relationship is found between plant diversity and soil erosion. With a heterogeneous plant distribution, vegetation coverage increases with plant diversity, and soil erosion is inhibited under such conditions.

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“…As a common index in ecology, Shannon's diversity index (SHDI) was used to estimate plant diversity (Riis and Hawes, 2002). This index was calculated using the following formula:…”

Section: Index Calculationsmentioning

confidence: 99%

Effects of plant diversity on soil erosion for different vegetation patterns

Hou

Wang²,

et al. 2016

CATENA

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“…This conclusion was also confirmed for other parts of the world. In New Zealand, for instance, [7] noted that species richness was much lower in lakes with interannual level variations than in lakes with intra-annual variations.…”

Section: Introductionmentioning

confidence: 99%

The Impact of “Man-Made Hydrological Drought” on Plant Species Abundance in the Low-Flow Channel Downstream from the Matawin Dam, Quebec

Assani

Simard

Gravel

et al. 2013

Water

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Abstract:The interannual variability of streamflow affects the composition and species richness of vegetation in low-flow channels and alluvial plains. Although climate conditions in 2003 and 2004 were nearly identical, large differences in streamflow were observed downstream from the Matawin dam. These differences resulted in numerous days without flow (no water release) during the growing period (May to August) in 2003, leading to man-made hydrological drought. While this drought had no effect on abiotic variables (grain-size distribution and nutrient concentrations in sediments), a significant decrease in the number of terrestrial species was observed in 2004 (year without drought) relative to 2003 (drought year) on three sand bars studied. This decrease is interpreted to result from prolonged submergence of the sites in 2004. Principal component analysis highlighted the effect of individual sites (first principal component) and of the interannual variability of streamflow (second component) on the number of species. The study suggests that, from a flow management standpoint, it is advisable to release enough water downstream from the dam during the growing season to prevent low-flow channel colonization by invasive terrestrial species.

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“…Flooding primarily determines plant distribution and can affect species richness and diversity (Huston 1994, Ferreira and Stohlgren 1999, Stromberg 2001, Riis and Hawes 2002. Additionally, WD affects light transmission as well as chemical changes in sediment and water TUR; thus, becoming a significant environmental factor in the growth of wetland plants (Grace andWetzel 1981, Spence 1982).…”

Section: Optimal Environment For the Juncus Effusus Community Water Cmentioning

confidence: 99%

Optimal environmental range for Juncus effusus, an important plant species in an endangered insect species (Nannopya pygmaea) habitat in Korea

Yoon¹,

Kim²,

Nam³

et al. 2011

J. Ecol. Environ.

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Juncus effusus is mostly found in freshwater wetlands and is widely used for landscaping and creating artificial wetlands due to its high ecological value. J. effusus tends to dominate during the early stage (3-10 years) of the second succession in abandoned paddy fields. This study focused on the environmental characteristics of J. effusus to create habitat for an endangered species, Nannopya pygmaea, which lives in wetlands dominated by J. effusus. Considering the distribution of J. effusus and N. pygmaea, 63 quadrats at eight wetlands were investigated between May and June 2006 during the critically dry period. Fifty-three species from 28 families co-occurred with J. effusus, and Persicaria thunbergii was the most abundant (63.5%). The optimal ranges of distribution (ORD) for the water variables were water depth, -2 to 10 cm; dissolved oxygen, 0.99-3.55 mg/kg, conductivity ( ; and total carbon, 1.06-2.37%. The appearance of rush during early succession indicated relatively lower levels of these physicochemical parameters, and that ORDs should be maintained for the J. effusus community.

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Relationships between water level fluctuations and vegetation diversity in shallow water of New Zealand lakes

Cited by 160 publications

References 18 publications

Effects of plant diversity on soil erosion for different vegetation patterns

Effects of plant diversity on soil erosion for different vegetation patterns

The Impact of “Man-Made Hydrological Drought” on Plant Species Abundance in the Low-Flow Channel Downstream from the Matawin Dam, Quebec

Optimal environmental range for Juncus effusus, an important plant species in an endangered insect species (Nannopya pygmaea) habitat in Korea

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