Plant Zonation in an Alaskan Salt Marsh: II. An Experimental Study of the Role of Edaphic Conditions

Snow, Allison A.; Vince, S. W.

doi:10.2307/2260075

Cited by 236 publications

(137 citation statements)

References 8 publications

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“…This is in accordance with the idea that species that adapt to very harsh conditions are generally poorer competitors. A general dogma of salt marsh zonation is that the lower vertical limit of species is controlled largely by tolerance of tidal factors, while the upper limit is fixed by interspecific competition (Snow & Vince 1984;Gray 1992;Pennings & Callaway 1992). This view is thus confirmed from the observed presence-dominance relationships of the species.…”

Section: Discussionmentioning

confidence: 77%

Do intrinsically dominant and subordinate species exist? A test statistic for field data

Olff

Bakker

1998

Applied Vegetation Science

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Abstract. We propose a new method to obtain information about processes that structure plant communities. We analysed the relationship between the presence and dominance of species across a range of habitats. A simple regression model was used to describe this relationship for each species. Based on the regression parameters, we distinguished globally dominant species, which dominate in the same proportion of plots within a habitat as in which they occur, locally dominant species, which reach dominance only when present in almost every plot of a habitat, and intrinsically subordinate species, which never attain dominance. We tested this method using a large data set of species occurrences across a range of salt marsh habitats. The relationships between presence and dominance could be described well by the regressions, and showed large differences between the species. Global dominants occurred later in the succession and higher on the elevational gradient than intrinsically subordinate species. Local dominants were characteristic of early successional stages. These patterns are discussed in the light of colonisation-competition and tolerance-competition trade-offs.

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Section: Discussionmentioning

confidence: 77%

Do intrinsically dominant and subordinate species exist? A test statistic for field data

Olff

Bakker

1998

Applied Vegetation Science

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“…It happens that there are lots of similar cases around the world. For example, Grace and Wetzel (1981) and Snow and Vince (1984) presented evidence that competition produced zonation patterns, by means of a controlled experiment at the W.K. Kellogg Biological Station of Michigan State University, and by means of field experiment in a subarctic marsh, respectively.…”

Section: Discussionmentioning

confidence: 99%

Effects of hydrology and competition on plant growth in a freshwater marsh of northeast China

Zhang

Mao

Gong

et al. 2013

Journal of Freshwater Ecology

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Hydrology and competition are major determinants of plant zonation patterns in wetlands. We conducted a pot experiment to investigate effects of water levels on plant growth of two dominant species from the Sanjiang Plain (Deyeuxia angustifolia and Carex lasiocarpa) in monoculture and mixtures (i.e., 2:1, 1:1, and 1:2 mixtures of C. lasiocarpa and D. angustifolia). Water level had significant effects on the biomass of both species (p < 0.05). The aboveground biomass of C. lasiocarpa increased with decreasing water level in both monoculture and mixtures and the same was true for belowground biomass in monoculture. Waterlogging (10 cm water level) and natural drought reduced the aboveground and belowground biomass of D. angustifolia in monoculture and waterlogging (20 and 10 cm water levels) also reduced the aboveground biomass in mixtures. The relative yield of C. lasiocarpa was greater than 1.0 in the 1:1 mixture (t ¼ 3.49) and the 1:2 mixture (t ¼ 6.63) at 20 cm water level (i.e., the performance of individuals was better in mixtures than that in the monoculture), and the same was true for D. angustifolia in the 2:1 mixture (t ¼ 10.23) and the 1:1 mixture (t ¼ 4.12) at À10 cm water level. The relative yield of C. lasiocarpa increased with increasing water level in the 1:1 and 1:2 mixtures but decreased for D. angustifolia in the 2:1 mixture. Moreover, the species with smaller initial proportion usually had higher relative yield in mixtures. This would tend to promote the coexistence of these two species. Our results suggest that hydrologic regime change has the potential to produce marked influences on plant productivity and ecosystem carbon budget in the Sanjiang Plain. Moreover, competition is an additional important determinant of plant distribution and community structure in this area.

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“…We related the general vegetation pattern to the abiotic condition. However, there are many studies, especially in coastal tidal marshes, that stress the following biotic factors as important: competition (Snow and Vince 1984;Bertness 1991;Pennings and Callaway 1992;Ungar 1998;Egan and Ungar 2001), impact of parasites (Pennings and Callaway 1996) and herbivores (Miller et al 1996), and the presence of mycorrhizae (Neto et al 2006). These influence the general pattern and can modify the vegetation pattern on a local scale.…”

Section: Discussionmentioning

confidence: 99%

Main Driving Factors for Seacoast Vegetation in the Southern and Eastern Baltic

et al. 2016

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This study aimed to determine the role of environmental factors in the pattern of vegetation related to marsh soils, which are rare in the Baltic coastal zone. It was assumed that the pattern of vegetation directly affected by seawater depends on seawater salinity, and in general reflects the decreasing salinity gradient of the Baltic Sea. The research of vegetation and soils (0-25 cm) has been undertaken on 11 selected sites along the Baltic seacoast in Germany, Poland and Estonia. According to TWINSPAN classification, five plant communities were distinguished: the Puccinellia maritima-Spergularia marina community, Juncus gerardi community, Agrostis stolonifera-Phragmites australisScirpus lacustris ssp. tabernaemontani community, Phragmites australis-Calystegia sepium community and Elymus repens community. A canonical correspondence analysis showed that the most important environmental factors influencing vegetation differentiation were: electrical conductivity of the saturation paste extract, hay/pasture management, redox potential, soil moisture and actual pH. In conclusion, the spatial distribution of the investigated vegetation and soil properties along the Baltic Sea shore were inconsistent with the spatial salinity gradient of the open surface seawater, but was significantly dependent on local conditions. This was confirmed by the highest soil salinity and most abundant occurrence of Salicornia europaea in Estonia.

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Plant Zonation in an Alaskan Salt Marsh: II. An Experimental Study of the Role of Edaphic Conditions

Cited by 236 publications

References 8 publications

Do intrinsically dominant and subordinate species exist? A test statistic for field data

Do intrinsically dominant and subordinate species exist? A test statistic for field data

Effects of hydrology and competition on plant growth in a freshwater marsh of northeast China

Main Driving Factors for Seacoast Vegetation in the Southern and Eastern Baltic

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