Floristics and soil relations of upland swamp vegetation near Sydney

Keith, David A.; Myerscough, P. J.

doi:10.1111/j.1442-9993.1993.tb00460.x

Cited by 55 publications

(89 citation statements)

References 25 publications

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“…Vegetation variation at regional (approximately 10 km) and local, hillslope scale is believed to be associated principally with rainfall and topographic variation (NPWS 2003). Local, edaphic controls on plant species distribution in wet heathland (upland swamps) are well established (Keith & Myerscough 1993). Moisture-related variations seem to be more significant for heathÁwoodland transitions in the Blue Mountains, which is in a similar physiographic setting but west of the current study area, where control by shallow soils, related to slope length and inclination, rather than aspect, is dominant (Wilkinson & Humphreys 2006).…”

Section: Study Areamentioning

confidence: 64%

Landscape Controls on Structural Variation in Eucalypt Vegetation Communities: Woronora Plateau, Australia

Jenkins

Coops

2011

Australian Geographer

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Quantification of landscape-based vegetation structural variation and pattern is a significant goal for a variety of ecological, monitoring and biodiversity studies. Vegetation structural metrics, derived from airborne laser scanning (ALS or aerial light detection and ranging*LiDAR) and QuickBird satellite imagery, were used to establish the degree of plot-based vegetation variation at a hillslope scale. Topographic position is an indicator of energy and water availability, and was quantified using DEMbased insolation and topographic wetness, respectively, stratifying areas into hot-warm-cold and wet-moist-dry topographic classes. A range of vegetation metrics*maximum and modal canopy height, crown cover, foliage cover, NDVI and semivariance*were compared among randomly selected plots from each topographic class. NDVI increases with increasing landscape wetness, whereas ALS-derived foliage cover decreases with increasing insolation. Foliage cover is well correlated with crown cover (R 2 00.65), and since foliage cover is readily calculable for whole-of-landscape application, it will provide valuable and complementary information to NDVI. Between-plot heterogeneity increases with increasing wetness and decreasing insolation, indicating that more sampling is required in these locations to capture the full range of landscape-based variability. Pattern analysis in landscape ecology is one of the fundamental requirements of landscape ecology, and the methods described here offer statistically significant, quantifiable and repeatable means to realise that goal at a fine spatial grain.

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Section: Study Areamentioning

confidence: 64%

Landscape Controls on Structural Variation in Eucalypt Vegetation Communities: Woronora Plateau, Australia

Jenkins

Coops

2011

Australian Geographer

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“…Native shrubs planted at the beginning of the experiment may have extracted nutrients from deeper sections of the soil profile and deposited litterfall at greater rates than smaller growth forms (e.g. Keith & Myerscough 1993). …”

Section: Arrival Order Does Not Strongly Affect Biotic or Abiotic Varmentioning

confidence: 99%

Arrival order among native plant functional groups does not affect invasibility of constructed dune communities

2013

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Different arrival order scenarios of native functional groups to a site may influence both resource use during development and final community structure. Arrival order may then indirectly influence community resistance to invasion. We present a mesocosm experiment of constructed coastal dune communities that monitored biotic and abiotic responses to different arrival orders of native functional groups. Constructed communities were compared with unplanted mesocosms. We then simulated a single invasion event by bitou (Chrysanthemoides monilifera ssp. rotundata), a dominant exotic shrub of coastal communities. We evaluated the hypothesis that plantings with simultaneous representation of grass, herb and shrub functional groups at the beginning of the experiment would more completely sequester resources and limit invasion than staggered plantings. Staggered plantings in turn would offer greater resource use and invasion resistance than unplanted mesocosms. Contrary to our expectations, there were few effects of arrival order on abiotic variables for the duration of the experiment and arrival order was unimportant in final community invasibility. All planted mesocosms supported significantly more invader germinants and significantly less invader abundance than unplanted mesocosms. Native functional group plantings may have a nurse effect during the invader germination and establishment phase and a competitive function during the invader juvenile and adult phase. Arrival order per se did not affect resource use and community invasibility in our mesocosm experiment. While grass, herb and shrub functional group plantings will not prevent invasion success in restored communities, they may limit final invader biomass. KeywordsHistorical contingency, priority effect, exotic, community structure, mesocosm AbstractDifferent arrival order scenarios of native functional groups to a site may influence both resource use during development and final community structure. Arrival order may then indirectly influence community resistance to invasion. We present a mesocosm experiment of constructed coastal dune communities that monitored biotic and abiotic responses to different arrival orders of native functional groups. Constructed communities were compared with unplanted mesocosms. We then simulated a single invasion event by bitou (Chrysanthemoides monilifera ssp. rotundata), a dominant exotic shrub of coastal communities. We evaluated the hypothesis that plantings with simultaneous representation of grass, herb and shrub functional groups at the beginning of the experiment would more completely sequester resources and limit invasion than staggered plantings. Staggered plantings in turn would offer greater resource use and invasion resistance than unplanted mesocosms.Contrary to our expectations, there were few effects of arrival order on abiotic variables for the duration of the experiment and arrival order was unimportant in final community invasibility. All planted mesocosms supported significantly more invader germina...

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“…This paper presents methods using current high-resolution (<10 m) remote sensing to map and monitor upland (headwater) swamps within woodland/ forested environments, regarded as significant landscape features in southeastern Australia (Keith and Myerscough 1993). The swamps are sources of high plant species diversity (Keith 1994) and have been used in assessment of global climate change (Keith et al 2009) and also provide a functional role in catchment hydrodynamics and maintenance of potable water supply (Keith et al 2006;SCA 2007).…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Remote Sensing of Upland Swamp Boundaries and Vegetation for Baseline Mapping and Monitoring

Jenkins

Frazier

2010

Wetlands

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Floristics and soil relations of upland swamp vegetation near Sydney

Cited by 55 publications

References 25 publications

Landscape Controls on Structural Variation in Eucalypt Vegetation Communities: Woronora Plateau, Australia

Landscape Controls on Structural Variation in Eucalypt Vegetation Communities: Woronora Plateau, Australia

Arrival order among native plant functional groups does not affect invasibility of constructed dune communities

High-Resolution Remote Sensing of Upland Swamp Boundaries and Vegetation for Baseline Mapping and Monitoring

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