Landscape-Scale Geomorphic Influences on Vegetation Patterns in Four Environments

Parker, Kathleen C.; Bendix, Jacob

doi:10.1080/02723646.1996.10642577

Cited by 66 publications

(46 citation statements)

References 163 publications

(248 reference statements)

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“…In riparian and other wetland habitats, distance to the center of the stream, or other open water, and elevation/depth define landscape position and potential habitat polygons. As mentioned earlier, landscape position has been recognized as an integration of geomorphic processes that affect species distribution v www.esajournals.org patterns in riparian systems (Parker and Bendix 1996). Meitzen (2009) concluded that lateral channel migration controlled riparian forest characteristics on the Congaree River, South Carolina; however, this approach is not limited to coastal systems.…”

Section: Discussionmentioning

confidence: 99%

“…For example, Parker and Bendix (1996) reviewed the influence of geomorphic influences on vegetation patterns within the context of landscape position in four environments: riparian, slopes affected by mass movement, alluvial fans and glaciated landscapes. For the four systems, vegetation structure and species composition varied with elevation due to corresponding variations in geomorphic processes.…”

Section: Introductionmentioning

confidence: 99%

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Landscape position and habitat polygons in a dynamic coastal environment

et al. 2011

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Abstract. In contrast to stable inland systems, coastal landscape positions are dynamic, changing as shorelines migrate and storms alter topography. We define landscape position by distance to ocean shoreline and elevation above sea level, two metrics that integrate a suite of environmental and biotic factors. As shoreline and elevation change, suitability of a geo-referenced position for a given plant species may also change. The objectives of our study were to use two methods for measuring landscape position (GPS and hyperspectral/light detection and ranging or LIDAR) to develop habitat polygons, compare habitat polygons for five species representing several adaptive strategies, and illustrate change in landscape position due to migrating shoreline for a Virginia, USA barrier island. Habitat polygons for each species were distinct, represented several growth forms or functional groups, and were indicative of tolerances to biotic and abiotic stresses. The habitat polygon for Cakile edentula (annual forb) was relatively small, indicating narrow habitat requirements for the strand environment. Cirsium horridulum (biennial forb), with succulent shoots and roots, occurred on dunes where water is most limiting. For the dunebuilding grass, Ammophila breviligulata, as distance from shoreline increased, minimum elevation also increased. Two woody species occurred across the entire island; however, Morella cerifera (N-fixing shrub), was limited to mesic swales whereas Juniperus virginiana (evergreen tree), with the largest habitat polygon, occurred on both dunes and swales. For a geo-referenced point on the north end of Hog Island, distance to shoreline increased from the shoreline to 1100 m inland over 139 years. In contrast, the geo-referenced point on the eroding portion of the island decreased from 1700 m to 120 m from the ocean shoreline over the same time period. Where sea level rise and storms are expected to alter shorelines and island topography, generation of habitat polygons from hyperspectral and LIDAR imagery provide rapid assessment of potential effects on species distribution patterns at local and regional scales. Habitat polygons have broad applicability beyond coastal systems and may contribute to a rapid assessment or identification of vulnerability for species as climate patterns shift through time.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Landscape position and habitat polygons in a dynamic coastal environment

et al. 2011

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“…Huston (1994) has shown that the nature of substrate ( e.g., texture) and availability of nutrients, which are mainly the result of geologic processes, influence the pattern of plant communities and diversity. Parker and Bendix (1996) have also pointed out that these features can influence the distribution pattern of individual plants or communities indirectly by regulating microclimatic and hydrological processes in the site. Distinct patches in natural vegetation may be produced through a variety of m echanisms such as anthropogenic influences including the effect of grazing, selective felling, and clearing of the vegetation for cultivation (Forman and Gordon, 1986).…”

Section: Introductionmentioning

confidence: 99%

“…Temperature and moisture gradients along altitude, the nature of substrates, and topographic features such as aspect and their configuration can result in distinct or fuzzy units (Zerihun Woldu et al, 1989;Parker and Bendix, 1996). Huston (1994) has shown that the nature of substrate ( e.g., texture) and availability of nutrients, which are mainly the result of geologic processes, influence the pattern of plant communities and diversity.…”

Section: Introductionmentioning

confidence: 99%

Vegetation of Chencha Highlands in Southern Ethiopia

Wana

Woldu

2006

SEJS

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ABSTRACT:The relationship between environmental factors and plant communities identified using multivariate numerical analyses were investigated in the highlands of southern Ethiopia. Vegetation data were obtained from relevés placed in belt transects along altitudinal gradients on the mountain slopes following the Arbaminch-Chancha road. The relevés were placed in the two transects which ran for about 30 km from 1180 m to 2250 m along the slope representing a 25 m vertical distance between each relevés. The relationship among plant communities and environmental factors were established using one way Analysis of Variance (ANOVA). Community transition and species diversity are affected, inter alia, by environmental f actors including soil properties, slope and aspect which varied significantly (P <0.05). The Communities changed along altitudinal gradients as indicated by the high community coefficients of 0.52, 0.53 and 0.16 in between adjacent communities. Species diversity and richness were high in communities between 1250-1800 m. The high species diversity and richness is explained partly by the variations in the environmental factors, which are associated with the effect of altitude.

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“…Erosion and deposition continue to shape landforms and impart environmental heterogeneity to the landscape aided by disturbances such as wind, fire and floods (Montgomery, 1999, Naiman et al, 2000. (Swanson et al, 1988, Parker and Bendix, 1996, Smith and Lundholm, 2012. As a result, landforms directly and indirectly may also control other patterns of material flux that are caused by components of the ecosystem.…”

Section: Effect Of Landforms On Ecosystems In Natural Landscapesmentioning

confidence: 99%

Quantification of landform heterogeneity and its relationship with ecological patterns in broad-scale post-mine rehabilitation

Datar¹

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Abstract:Broad-scale surface mining of minerals and quarrying for construction material is usually associated with significant alteration of topography and substantial disturbance to ecological systems. Post-mining ecological rehabilitation typically starts with reconstruction of topography. A fairly common industry practice has been to use landform elements such as plateaus, terraces, and gentle slopes to assist with stabilizing unconsolidated mine waste material. However, this approach often leads to the generation of uniform landform features that do not typically reflect those in natural landscapes. Previous research in undisturbed and agricultural landscapes shows that ecological attributes and diversity is positively correlated with landform heterogeneity. The objective of this thesis was to investigate if those findings were still valid in post-mining rehabilitated landscapes using information and knowledge captured from a history of sites mined for heavy mineral sands on North Stradbroke Island

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Landscape-Scale Geomorphic Influences on Vegetation Patterns in Four Environments

Cited by 66 publications

References 163 publications

Landscape position and habitat polygons in a dynamic coastal environment

Landscape position and habitat polygons in a dynamic coastal environment

Vegetation of Chencha Highlands in Southern Ethiopia

Quantification of landform heterogeneity and its relationship with ecological patterns in broad-scale post-mine rehabilitation

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