Problems in naming and defining the swampy meadow—An Australian perspective

Mactaggart, Barbara; Bauer, Johannes; Goldney, David; Rawson, Andrew

doi:10.1016/j.jenvman.2007.01.030

Cited by 25 publications

(23 citation statements)

References 48 publications

(59 reference statements)

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“…The subsoils and gully‐deposited sediment in the incised valley had significantly lower C and N concentrations than IV soils. Before this recent phase of gully erosion, valley erosion is thought to have been very low, with the absence of deep defined channels and the presence of swampy meadows (Eyles, ; Prosser and Slade, ; Prosser et al ., ; Mactaggart et al ., ; Saxton et al ., ). Sediments were produced from very rich organic soils, most likely richer than current IV soils because of the former swampy environment surrounded by forests (Eyles, ; Prosser et al ., ; Mactaggart et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Gully erosion reduces carbon and nitrogen storage and mineralization fluxes in a headwater catchment of south‐eastern Queensland, Australia

Garzon‐Garcia

Olley

Bunn

et al. 2013

Hydrological Processes

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Increased erosion associated with land use change often alters the flux of sediments and nutrients, but few studies have looked at the interaction between these disrupted cycles. We studied the effects of gully erosion on carbon and nitrogen storage in surface soil/sediment and herbaceous vegetation and on C and N mineralization in a headwater catchment used for cattle grazing. We found significantly lower C and N stored in an incising gully compared with an intact valley. This storage was significantly higher in an adjacent stabilizing gully, although not to the levels found in the intact valley. The intact valley had two to four times higher soil/sediment concentrations of total organic C, total N and Colwell extractable P than the incising gully. Lower storage was not explained by differences in vegetation biomass density or silt and clay content. Vegetation accounted for only 8% of C and 2% of N storage. Although not a significant store in itself, vegetation has an important indirect role in restoring and maintaining soil/sediment C and N stocks in eroding areas. We found significant linear relationships between C and N mineralization rates and soil/sediment C and N content, with lower rates occurring in the eroded sediment. These findings support our initial hypothesis that gully erosion reduces C and N storage and mineralization rates in eroding catchments. The implications of this study include a change to the quality of eroded sediments in headwater catchments, causing C‐poorer and N‐poorer sediments to be exported but overall loads to increase. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Gully erosion reduces carbon and nitrogen storage and mineralization fluxes in a headwater catchment of south‐eastern Queensland, Australia

Garzon‐Garcia

Olley

Bunn

et al. 2013

Hydrological Processes

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“…Dit kan leiden tot het aanwezig zijn van meer lopen (diffuus vlechtend patroon) of van afgesloten delen van lopen waar nieuwe verlandingsprocessen optreden. Op de overgangen tussen de sneller stromende lopen en de vlakke delen kunnen diepere poelen voorkomen, omdat het toestromende water hier het op de minerale ondergrond opgehoopte organisch materiaal erodeert (Mactaggart et al, 2008). De afvoer in het doorstroommoeras is hoger in de winter en lager in de zomer, waardoor in de winter duidelijkere geulen/stroombanen in de vlakke delen te onderscheiden zijn.…”

Section: Foto 21: Doorstroommoeras In Elzenbroekbos In Polen (Stroomunclassified

Doorstroommoerassen en moerasbeken : typebeschrijvingen en ontwikkeling maatlatten voor de biologische kwaliteitselementen

Verdonschot

Runhaar²,

Buijse³

et al. 2016

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“…Rivers have been regulated, channels and floodplains drained, extracted or diverted and these modifications have had significant impacts on flow patterns across the landscape. Features such as swampy meadows were once common in the Australian landscape but are now rare as a result of activities including clearing, draining, swamp burning and grazing (Mactaggart et al 2008). Riparian hydrology has become characterised by changes in flow duration, over-extraction, stream incision causing disconnection of instream flow from the adjacent floodplains, rapid draining of the surrounding landscape by incised streams and creek and river flows reaching greater peaks more rapidly while subsequent baseline flows are much lower in degraded watercourses (Brierley et al 1999;LeMaitre et al 2007;Callow and Smetten 2007).…”

Section: The Water Cyclementioning

confidence: 99%

Habitat loss and landscape degradation: the disastrous outlook for vertebrate fauna in central western NSW

Kerle¹,

Goldney²,

Fleming³

2014

Australian Zoologist

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Since European settlement this landscape has been dramatically altered resulting in a loss of native vegetation cover, destruction of soil quality and structure, disruption of the landscape hydrology and the introduction of pests and weeds (Bauer and Goldney 2000;Letnic 2000;Kerle et al. 2007;Windsor et al. 2004 ABSTRACTThe Central West and Lachlan Catchments lie west of the Great Dividing Range in central NSW and have been subjected to extensive land clearing, grazing and agricultural pressures beginning in the 1820s. Many vertebrate species are known to have disappeared from these catchments but reliable data for species diversity, distribution, abundance and conservation status are not available. For this assessment of the diversity and status of the vertebrate fauna in these catchment areas a comprehensive database of vertebrate records was established, species distributions mapped, faunal communities determined by pattern analysis and conservation status determined at a regional level. The extent of post-European human-induced landscape change was evaluated by assessing the degree of habitat loss, loss of landscape function and resilience through changes to the water cycle, soil and energy flow and the impact of invasive species, diseases and agricultural pollution.Of the 595 vertebrate species verified for these catchments, 6% are introduced, 12% have been listed in NSW under the Threatened Species Conservation Act 1995, 4% by the Commonwealth Environment Protection and Biodiversity Conservation Act 1999, 40% are regionally vulnerable, 20% regionally endangered and 2% likely to have become extinct in the region. Overall we estimate that 64% (382) of species are declining. These statistics present a grim picture of the survival of vertebrates in these catchments and potentially for the sheep-wheat belt of eastern Australia. The extreme loss of habitat and its poor condition across much of these catchments followed by serious changes to the functioning of the landscape provide clear reasons for the catastrophic decline of vertebrates in this landscape. If this serious decline in the Central West and Lachlan catchments is to be halted, strategies aimed at habitat and landscape restoration must be developed. Current strategies based on Threatened Species management plans and ad hoc planting for revegetation have not produced results. We need a radical rethink.

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Problems in naming and defining the swampy meadow—An Australian perspective

Cited by 25 publications

References 48 publications

Gully erosion reduces carbon and nitrogen storage and mineralization fluxes in a headwater catchment of south‐eastern Queensland, Australia

Gully erosion reduces carbon and nitrogen storage and mineralization fluxes in a headwater catchment of south‐eastern Queensland, Australia

Doorstroommoerassen en moerasbeken : typebeschrijvingen en ontwikkeling maatlatten voor de biologische kwaliteitselementen

Habitat loss and landscape degradation: the disastrous outlook for vertebrate fauna in central western NSW

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