Journal articles: 'Yarra River'

1

Serena, M., and G. A. Williams. "Distribution and Demographic Attributes of Platypus Populations Near Melbourne." Australian Mammalogy 20, no. 2 (1998): 313. http://dx.doi.org/10.1071/am98329.

Full text

Abstract:

Information on platypus populations occurring along streams in the Melbourne region was collected by mark- release studies in the period I989-I996. In all, 256 records of animals were obtained along waterways in the Yarra River, Maribyrnong River and Dandenong Creek catchments. Ornilhorhynchus anatinus were captured at approximately one-quarter of the sites sampled by fyke nets, with animals encountered to within about 15 km of inner Melbourne. Evidence of reproduction was obtained along seven waterways in the Yarra River catchment (Badger Creek, Watts River/Graceburn Creek, Olinda Creek, Mullum Mullum Creek, Diamond Creek, Plenty River/Jacks Creek and the Yarra River itself) as well as Monbulk Creek in the Oandenong Creek catchment. The earliest date on which a juvenile was captured at any site was 24 February. Across populations, sex ratio (expressed as the number of adult or subadult females per adult male) tended to be positively correlated with population density. In all seasons, nearly all animals were found to be in moderate to good physical condition (i.e. tail fat index = 2 or 3). The three thinnest individuals encountered in this study were adult females captured in March, at least two of which were lactating. Along the Watts River and Mullum Mullum Creek, six individuals (comprising about 10% of animals captured) had one or more pieces of plastic or rubber litter caught around their neck or thorax.

APA, Harvard, Vancouver, ISO, and other styles

2

Entwisle, TJ. "Macroalgae, in the Upper Yarra and Watts River catchments: Distribution and Phenology." Marine and Freshwater Research 41, no. 4 (1990): 505. http://dx.doi.org/10.1071/mf9900505.

Full text

Abstract:

Studies on the floristics and phenology of macroalgal communities in the upper Yarra and Watts River catchments have shown that the urbanized reaches of the Yarra River near Warburton are relatively species-rich and that they include nearly all macroalgal taxa found in protected catchments upstream. The lower of three river sites near Warburton, however, includes fewer species and is seasonally dominated by Vaucheria bursata, a saproxenous alga. The macroalgal communities on solid rock are distinct from those on loose rock subject to flood movement, and they include more taxa with basally attached filaments. A nearby enriched tributary, McMahons Creek, is dominated by a Spirogyroideae species and is species-poor. Species richness is also low on small-weirs and natural stream habitats in protected upstream catchments. Experimental timber harvesting above a series of small-weirs introduced weed species into the streams, replacing some of the native macroalgal species. Indigenous macroalgal species return 5 or so years after selective timber thinning, but they do not return even 10 years after clear-felling and fertilizing. The macroalgae of the upper Yarra River basin can be grouped into those that can grow throughout the year, those whose growth is restricted by water temperature, and those with a distinct seasonality unrelated to water temperature.

APA, Harvard, Vancouver, ISO, and other styles

3

Wheeler, W. K., S. J. Burkitt, A. Pau, and P. R. Fox. "The Bolte Bridge over the Yarra River, Melbourne." Structural Engineering International 12, no. 1 (February 2002): 8–10. http://dx.doi.org/10.2749/101686602777965603.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Happell, Brenda. "The Yarra River flows through Melbourne: So what?" International Journal of Mental Health Nursing 23, no. 1 (January 8, 2014): 1–2. http://dx.doi.org/10.1111/inm.12056.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

DUCKER, SOPHIE C., and T. M. PERRY. "James Fleming: the first gardener on the River Yarra, Victoria." Archives of Natural History 13, no. 2 (June 1986): 123–40. http://dx.doi.org/10.3366/anh.1986.13.2.123.

Full text

Abstract:

James Fleming, a convict gardener, was a member of the party in the Colonial Schooner Cumberland, on a journey of exploration to Bass Strait and Port Phillip Bay in 1802 and 1803; they were the first Europeans to visit the northern part of the Bay and discovered the River Yarra. The acting Surveyor General of N.S.W., Charles Grimes mapped the whole Bay. Fleming wrote a journal of the expedition and the descriptions of the country on Grimes's map. Later in 1803, he compiled a list of plants introduced into the colony of New South Wales and returned to England on H.M.S. Glatton in charge of a collection of Australian plants and seeds: A note sets the work of the Cumberland's expedition in the context of early discoveries and charting of Port Phillip Bay.

APA, Harvard, Vancouver, ISO, and other styles

6

Grace, Michael R., Thomas Jakob, Dietfried Donnert, and Ronald Beckett. "Effect of an Alternating Oxic/Anoxic Regime on a (Freshwater) Yarra River Sediment." Australian Journal of Chemistry 56, no. 9 (2003): 923. http://dx.doi.org/10.1071/ch03033.

Full text

Abstract:

The uptake and release of phosphorus, nitrogen, iron, and manganese from Yarra River sediments have been examined using laboratory reactors. Both slurried and static sediments were exposed to an alternating regime of oxic and anoxic conditions. Experiments examined the effect of changing the oxygen status on daily and weekly time frames. In all experiments, after anoxia was re-established, oxidant consumption followed the expected thermo-dynamic order: O2 > MnIV ≈ NOx > FeIII. Contrary to predictions based on the standard iron–phosphorus model, significant phosphorus release was observed under oxic conditions. This was attributed to the mineralization of organic matter. Nitrate was shown to minimize phosphorus release from anoxic sediments by ‘redox buffering’ which prevented iron(III) reduction. The high ambient water column nitrate concentration (40–45 μM) in the Yarra River should effectively limit phosphorus release from the sediments unless long term (multiweek) anoxia occurs. Reduction of nitrate concentration occurred predominantly via denitrification. This work clearly demonstrated that on a time scale of hours to weeks, the iron, manganese, nitrogen, and phosphorus cycles are interacting closely.

APA, Harvard, Vancouver, ISO, and other styles

7

Sokolov, Serguei, and Kerry P. Black. "Modelling the time evolution of water-quality parameters in a river: Yarra River, Australia." Journal of Hydrology 178, no. 1-4 (April 1996): 311–35. http://dx.doi.org/10.1016/0022-1694(95)02797-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Sinclair, P., R. Beckett, and B. T. Hart. "Trace elements in suspended particulate matter from the Yarra River, Australia." Hydrobiologia 176-177, no. 1 (July 1989): 239–51. http://dx.doi.org/10.1007/bf00026559.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Goodwin, David. "Melbourne’s Birrarung: the Missed Opportunity for Collaborative Urban River Governance." Australasian Business, Accounting and Finance Journal 16, no. 2 (2022): 32–52. http://dx.doi.org/10.14453/aabfj.v16i2.4.

Full text

Abstract:

A report submitted to Victoria’s Minister for Environment, Climate Change & Water in 2015 identified that the mechanisms in place for governance of Melbourne’s Lower Yarra River inhibit the river’s potential to enhance the liveability of the City of Melbourne. An absence of shared strategy and coordinated management across multiple government agencies was highlighted. Recommendations were made for revised governance arrangements, but they have been largely disregarded. Scholarship of the structure and function of river governance networks is at an early stage, but this study applies theory from a related field – collaborative governance – to investigate the implications of this lost opportunity for enhanced collaboration. The study explores the opportunity to apply an integrated framework for collaborative governance developed by Emerson, Nabatchi & Balogh, and its constituent elements, to an urban river governance context. The integrated framework is shown to be a valuable tool for illuminating the drivers, engagement processes, motivational attributes and joint capacities that can enable shared decision-making and implementation across multiple organisations and jurisdictions, to achieve desired ends. The study identifies the need to effectively manage political, legal, socioeconomic and environmental influences (the system context), along with the constraints of collaboration dynamics, if a collaborative governance regime is to be successfully implemented. The study identifies that factors such as interdependence, leadership direction, consequential incentives and uncertainty play a key role in driving collaboration dynamics, in the context of an urban river corridor. A collaborative multi-regulator partnership approach is advocated as the immediate way forward for the Lower Yarra.

APA, Harvard, Vancouver, ISO, and other styles

10

Koster, W. M., D. R. Dawson, J. R. Morrongiello, and D. A. Crook. "Spawning season movements of Macquarie perch (Macquaria australasica) in the Yarra River, Victoria." Australian Journal of Zoology 61, no. 5 (2013): 386. http://dx.doi.org/10.1071/zo13054.

Full text

Abstract:

The Macquarie perch (Macquaria australasica) is a threatened fish species that inhabits rivers and impoundments in south-eastern Australia. Previous studies have shown that Macquarie perch in impoundments exhibit synchronised upstream spawning migrations to shallow, fast-flowing habitats in the lower reaches of inflowing streams. There has been little study of movement behaviours of entirely riverine populations of Macquarie perch despite this being the species’ natural habitat. Here, radio-telemetry is used to test the hypothesis that riverine populations exhibit synchronised migrations during the spawning season. Thirty Macquarie perch in the Yarra River, Victoria, a translocated population outside of the species’ natural range, were radio-tagged before the late spring–early summer spawning season and their movements followed over a 10-month period (May 2011 to February 2012). Tagged fish typically occupied restricted reaches of stream (<450 m). Sixteen of the fish undertook occasional upstream or downstream movements (~250–1000 m) away from their usual locations, particularly associated with large flow variations during the spawning season. There was no evidence of synchronised migratory behaviour or movement of multiple fish to specific locations or habitats during the spawning season. Whilst further research over more years is needed to comprehensively document the spawning-related behaviours of riverine Macquarie perch, our study demonstrates that management of riverine populations of this threatened species cannot necessarily be based on the model of spawning behaviour developed for lacustrine populations.

APA, Harvard, Vancouver, ISO, and other styles

11

Butler, ECV, and JD Smith. "Iodine and arsenic redox species in oxygen-deficient estuarine waters." Marine and Freshwater Research 36, no. 3 (1985): 301. http://dx.doi.org/10.1071/mf9850301.

Full text

Abstract:

The distribution of the redox species of iodine and arsenic in two isolated pools of seawater underlying river water in deep holes in the estuary of the Yarra River is described. In the river water, the dominant species are iodide and As(V). In the saline water of these holes, there are levels of iodine and arsenic greater than are present in the original seawater. The subhalocline waters contained <0.22 ml 1-1 of dissolved oxygen, and the redox poise was intermediate between oxic and anoxic conditions. Most of the iodate originally in the seawater was reduced to iodide, but As111) and As(V) coexisted. Iodine and arsenic appear to have entered the water from the anoxic sediment.

APA, Harvard, Vancouver, ISO, and other styles

12

Serena, M., J. L. Thomas, G. A. Williams, and R. C. E. Officer. "Use of stream and river habitats by the platypus, Ornithorhynchus anatinus, in an urban fringe environment." Australian Journal of Zoology 46, no. 3 (1998): 267. http://dx.doi.org/10.1071/zo98034.

Full text

Abstract:

Radio-telemetry was used to monitor movements and burrow usage by O. anatinus living in the Yarra River catchment, about 20 km east-north-east of the central business district of Melbourne, Victoria. The home ranges of six adult or subadult animals were 2.9–7.3 km (mean ± s.d. = 4.6 ± 1.6 km) long, with individuals travelling up to 10.4 km (males) and 4.0 km (females) in a single overnight period. The mean home-range length of adult/subadult animals was significantly greater than that of juveniles (1.4–1.7 km, mean ± s.d. = 1.55 ± 0.2 km, n = 2). The animals utilised two drainage channels as well as 11.8 km of natural waterways, including the Yarra River (5 km), Mullum Mullum Creek (4 km) and Diamond Creek (2.8 km). Several animals travelled repeatedly below one-lane and two-lane bridges, confirming that these structures are not inherent barriers to platypus movement. In total, 57 platypus burrows were described, including 26 along the river, 29 along the creeks and 2 along drains. The horizontal distance from the water’s edge to burrow chambers was 0.4–3.7 m (mean ± s.d. = 1.5 ± 0.9 m, n = 41), with burrows found only in banks extending ≥ 0.5 m above the water. Platypus burrows occurred significantly more often than expected along undercut banks and in association with moderate-to-dense vegetation overhanging the water, and significantly less often at sites where banks had a convex profile at water level. As well, the amount of cover provided along the bank by shrubs/small trees and the ground layer of vegetation was significantly greater than expected at platypus burrows along the river. These attributes are believed to help conceal burrow entrances from predators as well as reduce burrow damage through erosion.

APA, Harvard, Vancouver, ISO, and other styles

13

Adhikary, Sajal Kumar, Abdullah Gokhan Yilmaz, and Nitin Muttil. "Optimal design of rain gauge network in the Middle Yarra River catchment, Australia." Hydrological Processes 29, no. 11 (December 3, 2014): 2582–99. http://dx.doi.org/10.1002/hyp.10389.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Daly, E., P. Kolotelo, C. Schang, C. A. Osborne, R. Coleman, A. Deletic, and D. T. McCarthy. "Escherichia coli concentrations and loads in an urbanised catchment: The Yarra River, Australia." Journal of Hydrology 497 (August 2013): 51–61. http://dx.doi.org/10.1016/j.jhydrol.2013.05.024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Barua, Shishutosh, A. W. M. Ng, and B. J. C. Perera. "Comparative Evaluation of Drought Indexes: Case Study on the Yarra River Catchment in Australia." Journal of Water Resources Planning and Management 137, no. 2 (March 2011): 215–26. http://dx.doi.org/10.1061/(asce)wr.1943-5452.0000105.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

O’Bryan, Katie. "The changing face of river management in Victoria: The Yarra River Protection (Wilip-gin Birrarung murron) Act 2017 (Vic)." Water International 44, no. 6-7 (May 23, 2019): 769–85. http://dx.doi.org/10.1080/02508060.2019.1616370.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Shenton, Will, Barry T. Hart, and Terence U. Chan. "A Bayesian network approach to support environmental flow restoration decisions in the Yarra River, Australia." Stochastic Environmental Research and Risk Assessment 28, no. 1 (February 8, 2013): 57–65. http://dx.doi.org/10.1007/s00477-013-0698-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Pettigrove, V. "The importance of site selection in monitoring the macroinvertebrate communities of the Yarra River, Victoria." Environmental Monitoring and Assessment 14, no. 2-3 (May 1990): 297–313. http://dx.doi.org/10.1007/bf00677923.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Leahy, Paul J., John Tibby, A. Peter Kershaw, Henk Heijnis, and John S. Kershaw. "The impact of European settlement on Bolin Billabong, a Yarra River floodplain lake, Melbourne, Australia." River Research and Applications 21, no. 2-3 (2005): 131–49. http://dx.doi.org/10.1002/rra.837.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Barua, Shishutosh, Nitin Muttil, A. W. M. Ng, and B. J. C. Perera. "Rainfall trend and its implications for water resource management within the Yarra River catchment, Australia." Hydrological Processes 27, no. 12 (May 12, 2012): 1727–38. http://dx.doi.org/10.1002/hyp.9311.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Bruce, L. C., P. L. M. Cook, I. Teakle, and M. R. Hipsey. "Hydrodynamic controls on oxygen dynamics in a riverine salt wedge estuary, the Yarra River estuary, Australia." Hydrology and Earth System Sciences 18, no. 4 (April 10, 2014): 1397–411. http://dx.doi.org/10.5194/hess-18-1397-2014.

Full text

Abstract:

Abstract. Oxygen depletion in coastal and estuarine waters has been increasing rapidly around the globe over the past several decades, leading to decline in water quality and ecological health. In this study we apply a numerical model to understand how salt wedge dynamics, changes in river flow and temperature together control oxygen depletion in a micro-tidal riverine estuary, the Yarra River estuary, Australia. Coupled physical–biogeochemical models have been previously applied to study how hydrodynamics impact upon seasonal hypoxia; however, their application to relatively shallow, narrow riverine estuaries with highly transient patterns of river inputs and sporadic periods of oxygen depletion has remained challenging, largely due to difficulty in accurately simulating salt wedge dynamics in morphologically complex areas. In this study we overcome this issue through application of a flexible mesh 3-D hydrodynamic–biogeochemical model in order to predict the extent of salt wedge intrusion and consequent patterns of oxygen depletion. The extent of the salt wedge responded quickly to the sporadic riverine flows, with the strength of stratification and vertical density gradients heavily influenced by morphological features corresponding to shallow points in regions of tight curvature ("horseshoe" bends). The spatiotemporal patterns of stratification led to the emergence of two "hot spots" of anoxia, the first downstream of a shallow region of tight curvature and the second downstream of a sill. Whilst these areas corresponded to regions of intense stratification, it was found that antecedent conditions related to the placement of the salt wedge played a major role in the recovery of anoxic regions following episodic high flow events. Furthermore, whilst a threshold salt wedge intrusion was a requirement for oxygen depletion, analysis of the results allowed us to quantify the effect of temperature in determining the overall severity and extent of hypoxia and anoxia. Climate warming scenarios highlighted that oxygen depletion is likely to be exacerbated through changes in flow regimes and warming temperatures; however, the increasing risk of hypoxia and anoxia can be mitigated through management of minimum flow allocations and targeted reductions in organic matter loading. A simple statistical model (R2 > 0.65) is suggested to relate riverine flow and temperature to the extent of estuary-wide anoxia.

APA, Harvard, Vancouver, ISO, and other styles

22

Roberts, Keryn L., Vera M. Eate, Bradley D. Eyre, Daryl P. Holland, and Perran L. M. Cook. "Hypoxic events stimulate nitrogen recycling in a shallow salt-wedge estuary: The Yarra River estuary, Australia." Limnology and Oceanography 57, no. 5 (August 21, 2012): 1427–42. http://dx.doi.org/10.4319/lo.2012.57.5.1427.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Kumar Adhikary, Sajal, Nitin Muttil, and Abdullah Gokhan Yilmaz. "Ordinary kriging and genetic programming for spatial estimation of rainfall in the Middle Yarra River catchment, Australia." Hydrology Research 47, no. 6 (January 29, 2016): 1182–97. http://dx.doi.org/10.2166/nh.2016.196.

Full text

Abstract:

Rainfall maps with gridded data are frequently used as an important input for many hydrological models. In this study, two kriging-based interpolation methods (i.e., ordinary kriging (OK) and kriging with genetic programming (KGP)) and a deterministic interpolation method (inverse distance weighting (IDW)) are implemented to generate gridded rainfall maps from point rainfalls. The KGP is implemented as a new kriging method in which the genetic programming-based non-parametric variogram model is used with kriging. Rainfall records from existing 19 raingauges in the Middle Yarra River catchment, Australia are used for the analysis. The performance of each method is assessed through the cross-validation test. Results indicate that the kriging-based methods clearly outperform the IDW method. Among all the kriging-based methods, OK with the spherical variogram model yields the lowest prediction error and best estimates for all months. The KGP method gives an almost identical error to that given by the OK with the spherical variogram model for most of the months and a lower prediction error than that given by OK with the exponential or Gaussian variogram model. Thus, the KGP can be used in line with traditional kriging as a viable alternative technique for spatial estimation and mapping of rainfall.

APA, Harvard, Vancouver, ISO, and other styles

24

Allinson, Mayumi, Fujio Shiraishi, Ryo Kamata, Shiho Kageyama, Daisuke Nakajima, Sumio Goto, and Graeme Allinson. "A Pilot Study of the Water Quality of the Yarra River, Victoria, Australia, Using In Vitro Techniques." Bulletin of Environmental Contamination and Toxicology 87, no. 5 (September 6, 2011): 591–96. http://dx.doi.org/10.1007/s00128-011-0394-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Metzeling, Leon, David Robinson, Stephen Perriss, and Richard Marchant. "Temporal persistence of benthic invertebrate communities in south-eastern Australian streams: taxonomic resolution and implications for the use of predictive models." Marine and Freshwater Research 53, no. 8 (2002): 1223. http://dx.doi.org/10.1071/mf02071.

Full text

Abstract:

Benthic macroinvertebrates are commonly used to monitor the condition of rivers and streams. Predictive models and biological objectives used in environmental policies, two tools for assessing stream condition, rely on the assumption that the communities from which the invertebrates are derived are sufficiently stable or persistent over time for valid comparisons to be made with test sites sampled years afterwards. There has only been limited testing of this in Australia and there has been no formal programme established to assess long-term changes in aquatic ecosystems. In this paper, data sets collected from the Latrobe and Yarra river systems in south-eastern Australia, sampled over periods of up to 20 years between initial and final samplings, were examined. Using multivariate analyses, it was found that stream communities were persistent at the taxonomic level of family, but significant temporal changes were apparent using species-level data. Tests of rank abundance (Friedman's and Spearman rank correlation) gave mixed results but generally lead to the same conclusions. The implications of these results are discussed with regard to changes in faunal composition, stability of rank abundances, impacts on the use of predictive models and biological objectives, and possible links to major environmental features.

APA, Harvard, Vancouver, ISO, and other styles

26

Sivapragasam, Chandrasekaran, Poomalai Saravanan, Saminathan Balamurali, and Nitin Muttil. "Ascertaining Time Series Predictability in Process Control – Case Study on Rainfall Prediction." MATEC Web of Conferences 203 (2018): 07002. http://dx.doi.org/10.1051/matecconf/201820307002.

Full text

Abstract:

Rainfall prediction is a challenging task due to its dependency on many natural phenomenon. Some authors used Hurst exponent as a predictability indicator to ensure predictability of the time series before prediction. In this paper, a detailed analysis has been done to ascertain whether a definite relation exists between a strong Hurst exponent and predictability. The one-lead monthly rainfall prediction has been done for 19 rain gauge station of the Yarra river basin in Victoria, Australia using Artificial Neural Network. The prediction error in terms of normalized Root Mean Squared Error has been compared with Hurst exponent. The study establishes the truth of the hypothesis for only 6 stations out of 19 stations, and thus recommends further investigation to prove the hypothesis. This concept is relevant for any time series which need to be used for real time process control.

APA, Harvard, Vancouver, ISO, and other styles

27

Das, Sushil K., Amimul Ahsan, Md Habibur Rahman Bejoy Khan, Muhammad Atiq Ur Rehman Tariq, Nitin Muttil, and Anne W. M. Ng. "Impacts of Climate Alteration on the Hydrology of the Yarra River Catchment, Australia Using GCMs and SWAT Model." Water 14, no. 3 (February 1, 2022): 445. http://dx.doi.org/10.3390/w14030445.

Full text

Abstract:

A rigorous evaluation of future hydro-climatic changes is necessary for developing climate adaptation strategies for a catchment. The integration of future climate projections from general circulation models (GCMs) in the simulations of a hydrologic model, such as the Soil and Water Assessment Tool (SWAT), is widely considered as one of the most dependable approaches to assess the impacts of climate alteration on hydrology. The main objective of this study was to assess the potential impacts of climate alteration on the hydrology of the Yarra River catchment in Victoria, Australia, using the SWAT model. The climate projections from five GCMs under two Representative Concentration Pathway (RCP) scenarios—RCP 4.5 and 8.5 for 2030 and 2050, respectively—were incorporated into the calibrated SWAT model for the analysis of future hydrologic behaviour against a baseline period of 1990–2008. The SWAT model performed well in its simulation of total streamflow, baseflow, and runoff, with Nash–Sutcliffe efficiency values of more than 0.75 for monthly calibration and validation. Based on the projections from the GCMs, the future rainfall and temperature are expected to decrease and increase, respectively, with the highest changes projected by the GFDL-ESM2M model under the RCP 8.5 scenario in 2050. These changes correspond to significant increases in annual evapotranspiration (8% to 46%) and decreases in other annual water cycle components, especially surface runoff (79% to 93%). Overall, the future climate projections indicate that the study area will become hotter, with less winter–spring (June to November) rainfall and with more water shortages within the catchment.

APA, Harvard, Vancouver, ISO, and other styles

28

Brauer, Chris J., Peter J. Unmack, Michael P. Hammer, Mark Adams, and Luciano B. Beheregaray. "Catchment-Scale Conservation Units Identified for the Threatened Yarra Pygmy Perch (Nannoperca obscura) in Highly Modified River Systems." PLoS ONE 8, no. 12 (December 13, 2013): e82953. http://dx.doi.org/10.1371/journal.pone.0082953.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Lintern, Anna, Marion Anderson, Paul Leahy, Ana Deletic, and David McCarthy. "Using sediment cores to establish targets for the remediation of aquatic environments." Water Science and Technology 73, no. 3 (October 19, 2015): 628–35. http://dx.doi.org/10.2166/wst.2015.525.

Full text

Abstract:

When assigning site-specific restoration targets for deteriorating aquatic systems, it is necessary to have an understanding of the undisturbed or background state of the system. However, the site-specific characteristics of aquatic systems prior to disturbance are mostly unknown, due to the lack of historical water and sediment quality data. This study aims to introduce a method for filling this gap in our understanding, using dated sediment cores from the beds of aquatic environments. We used Bolin Billabong, a floodplain lake of the Yarra River (South-East Australia), as a case study to demonstrate the application of this method. We identified the concentrations of aluminium, cadmium, chromium, copper, iron, lead, manganese, nickel, tin and zinc at 8 cm intervals through the sediment core. This showed that aluminium, chromium, copper, iron, lead, nickel, tin and zinc concentrations in Bolin Billabong sediments significantly increased after European settlement in the river catchment in the mid-19th century. The differences between current Australian sediment quality guidelines trigger values and the background metal concentrations in Bolin Billabong sediments underscore the value of using locally relevant background toxicant concentrations when setting water and sediment quality targets.

APA, Harvard, Vancouver, ISO, and other styles

30

Jovanovic, Dusan, Rebekah Henry, Rhys Coleman, Ana Deletic, and David McCarthy. "Integrated conceptual modelling of faecal contamination in an urban estuary catchment." Water Science and Technology 72, no. 9 (July 15, 2015): 1472–80. http://dx.doi.org/10.2166/wst.2015.363.

Full text

Abstract:

Urban stormwater is regarded as a key input of faecal contamination in receiving water bodies and therefore, a major concern for health risks associated with aquatic recreation. Wastewater leakages, cross connections and overflows, together with faeces washed from surfaces during rainfall events, are possible origins of faecal contamination which enter these water bodies through stormwater drains. This paper applies conceptual models to a case study of the Yarra River estuary to understand the relative importance of fluxes derived from an urban creek and the 219 urban stormwater pipes which drain directly to the estuary as compared with other inputs, such as the Yarra River itself. Existing hydrologic-microorganism models were used for the estimation of the inputs from riverine and urban stormwater fluxes. These predictions were applied as boundary conditions for a new, highly simplified, model which accounts for the transport and survival of faecal microorganisms in the estuary. All models were calibrated using a rich dataset, containing over 2,000 measured Escherichia coli concentrations. Mass balances from the riverine and stormwater models indicate the limited influence of urban stormwater drains on the estuary during dry weather; less than 0.05% to 10% (5th and 95th percentile; median 0.5%) of the total daily E. coli load entering the estuary was derived from urban stormwater drains. While wet weather contributions from stormwater drains could be more significant (2% to 50%; 5th and 95th percentile), the average contribution remained marginal (median 10%). Sensitivity testing of the estuarine microorganism model by switching off stormwater boundary conditions resulted in minimal model efficiency reduction; this may reflect the low average daily contribution from urban stormwater drains. While these results confirm previous studies which show that E. coli loads derived from stormwater drains are dwarfed by other inputs, it is essential to note that these results also demonstrate that some conditions reveal the opposite; high proportions from stormwater are possible when combined with low riverine inputs and high urban rainfall. Furthermore, this study focuses on the overall impacts of direct urban stormwater inputs on the faecal contamination levels within the estuary, and localized impacts would certainly require further investigation.

APA, Harvard, Vancouver, ISO, and other styles

31

Dobbie, Meredith, Ruth Morgan, and Lionel Frost. "Overcoming Abundance: Social Capital and Managing Floods in Inner Melbourne during the Nineteenth Century." Journal of Urban History 46, no. 1 (February 14, 2017): 33–49. http://dx.doi.org/10.1177/0096144217692984.

Full text

Abstract:

Before effective drainage and flood protection systems were built in the early twentieth century, areas of inner Melbourne close to the Yarra River were prone to flooding. An overabundance of water and a need to limit its impact on lives, livelihoods, and the built environment drove changes in the engineered structure of a rapidly growing city. Through a case study of a working-class district, we consider how private citizens, drawing on stocks of social capital, responded to major floods in 1863 and 1891. In addition to the process of “top-down” governing, as revealed in public documents, less visible “bottom-up” pressure from local communities played an important role in influencing improvements in water-related infrastructure, such as flood mitigation works. By the turn of the twentieth century, this local pressure increasingly manifested in a centralist approach to water management, whereby metropolitan-wide public authorities took greater charge of local environmental problems.

APA, Harvard, Vancouver, ISO, and other styles

32

Lintern, Anna, Ana Deletic, Paul Leahy, and David McCarthy. "Digging up the dirty past: evidence for stormwater’s contribution to pollution of an urban floodplain lake." Marine and Freshwater Research 66, no. 7 (2015): 596. http://dx.doi.org/10.1071/mf14111.

Full text

Abstract:

Negative effects of urbanisation on the health of aquatic environments are well recognised; but more data are needed for an accurate assessment of the particular effects of residential development on the health of aquatic systems. This study explores the relationship between residential growth and increasing pollution, by analysing temporal trends of chemical fluxes into Willsmere Billabong – an urban floodplain lake of the Yarra River in South-East Australia. Sediment cores were extracted to reveal depositions over three centuries (~1700–2012). The cores were sub-sampled at high resolution and analysed for heavy metals, polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs). Pollutant concentrations in the sediments appear to have been significantly affected by residential development in the local catchment. Normalised concentration profiles show these effects to be exacerbated from the mid-20th century, after a stormwater drain was installed in the billabong. The study suggests that urban stormwater management techniques are critical for the protection of aquatic systems incorporated into residential zones.

APA, Harvard, Vancouver, ISO, and other styles

33

Bruce, L. C., P. L. M. Cook, I. Teakle, and M. R. Hipsey. "Controls on oxygen dynamics in a riverine salt-wedge estuary – a three-dimensional model of the Yarra River estuary, Australia." Hydrology and Earth System Sciences Discussions 10, no. 7 (July 26, 2013): 9799–845. http://dx.doi.org/10.5194/hessd-10-9799-2013.

Full text

Abstract:

Abstract. Oxygen depletion in estuarine waters is an important factor governing water quality and ecological health. A complex and dynamic balance of physical and biogeochemical factors drive the extent and persistence of hypoxia and anoxia making it difficult to predict. An increased understanding of the effect of changing flow regimes and temperature on patterns of estuarine oxygen depletion is required to support ongoing management. Coupled physical and biogeochemical models have been applied to study the interaction of physical processes and seasonal hypoxia, however, application to riverine estuaries with tight curvature and more sporadic periods of oxygen depletion is rare. In this study we apply a finite volume 3-D hydrodynamic-biogeochemical model (TUFLOW-FV–FABM) to the Yarra River estuary, Australia, in order to predict the extent of salt-wedge intrusion and consequent patterns of oxygen depletion. The predictive capacity of the model was evaluated using a series of model verification metrics and the results evaluated to determine the dominant mechanisms affecting salt-wedge position and the extent and persistence of anoxia and hypoxia. Measures of model fit indicated that the model reasonably captured the strength of stratification and the position and extent of the salt wedge (r2 ~ 0.74). The extent of the salt wedge intrusion was controlled by riverine flow and the strength of stratification or mixing dominated by topographical features corresponding to areas of tight curvature ("horseshoe" bends). The model predicted that the extent of anoxic waters generally mimicked the extent of the salt wedge (r2 ~ 0.65) increasing during periods of low flow and reduced following episodic high flow events. The results showed two sporadically isolated "hot spots" of anoxia, the first downstream of the horseshoe bend and the second downstream of a sill. Simulated oxygen concentrations indicated that whilst a threshold salt wedge intrusion was a requirement of oxygen depletion, temperature was critical in determining the extent of hypoxia and anoxia in the estuary. These findings highlight the importance of how seasonal changes in flow events and environmental flow management can impact on estuarine oxygen depletion in a warming climate. This study provides an improved understanding of the controls on hypoxia and anoxia in riverine estuaries, which is essential to support improved prediction of nutrient dynamics and ecological heath.

APA, Harvard, Vancouver, ISO, and other styles

34

Urrutiaguer, M., S. Lloyd, and S. Lamshed. "Determining water sensitive urban design project benefits using a multi-criteria assessment tool." Water Science and Technology 61, no. 9 (May 1, 2010): 2333–41. http://dx.doi.org/10.2166/wst.2010.045.

Full text

Abstract:

The integration of urban water cycle management with urban planning and design is referred to as ‘Water Sensitive Urban Design’ or ‘WSUD’ in Australia; one of the key elements of WSUD is the management of urban stormwater. In early 2006, the Victorian Government released the Yarra River Action Plan, which allocated $20 million towards tackling urban stormwater pollution. To help ensure this money is allocated in an equitable and transparent manner across all metropolitan local governments a multi-criteria assessment tool has been developed. This paper presents an overview of the multi-criteria assessment tool developed and adopted for selecting WSUD projects that are eligible for funding through Melbourne Water's Stormwater Program. This tool considers three types of indicators: environmental, engagement (engagement with stakeholders and local government capacity building) and financial. Within each category, a series of indicators of different weightings are applied to score a project. Where initial concept designs do not meet the Program criteria, additional work is undertaken to refine and improve the project. The tool and its use are illustrated with a case study.

APA, Harvard, Vancouver, ISO, and other styles

35

Tonkin, Zeb, Joanne Kearns, Justin O'Mahony, and John Mahoney. "Spatio-temporal spawning patterns of two riverine populations of the threatened Macquarie perch (Macquaria australasica)." Marine and Freshwater Research 67, no. 11 (2016): 1762. http://dx.doi.org/10.1071/mf15319.

Full text

Abstract:

Understanding species-reproduction dynamics is vital for the management of riverine fish. Information on the spawning ecology of the endangered Australian Macquarie perch (Macquaria australasica) is based largely on data gathered from lacustrine populations, with uncertainty on the applicability such data has for managing riverine populations. The current study presents a first description of spawning patterns of two riverine populations of Macquarie perch in Victoria, Australia, using egg counts recorded across multiple sites and periods within the species core spawning window. Spawning intensity was highly variable between study sites, with 96 and 82% of eggs collected from a single site in the King Parrot Creek and Yarra River respectively. We also found a strong positive association between spawning and water temperature. Our results provide an important account of spatio-temporal spawning patterns of riverine Macquarie perch populations and lend some support for the transfer of information from lacustrine populations (as demonstrated by spawning habitat and temperature association). Although the spatial and temporal constraints of the present study must be considered, the results provide opportunity for further testing of the environmental effects, and management options aimed at enhancing spawning of this endangered species.

APA, Harvard, Vancouver, ISO, and other styles

36

Adhikary, Sajal Kumar, Nitin Muttil, and Abdullah Gokhan Yilmaz. "Improving streamflow forecast using optimal rain gauge network-based input to artificial neural network models." Hydrology Research 49, no. 5 (December 5, 2017): 1559–77. http://dx.doi.org/10.2166/nh.2017.108.

Full text

Abstract:

Abstract Accurate streamflow forecasting is of great importance for the effective management of water resources systems. In this study, an improved streamflow forecasting approach using the optimal rain gauge network-based input to artificial neural network (ANN) models is proposed and demonstrated through a case study (the Middle Yarra River catchment in Victoria, Australia). First, the optimal rain gauge network is established based on the current rain gauge network in the catchment. Rainfall data from the optimal and current rain gauge networks together with streamflow observations are used as the input to train the ANN. Then, the best subset of significant input variables relating to streamflow at the catchment outlet is identified by the trained ANN. Finally, one-day-ahead streamflow forecasting is carried out using ANN models formulated based on the selected input variables for each rain gauge network. The results indicate that the optimal rain gauge network-based input to ANN models gives the best streamflow forecasting results for the training, validation and testing phases in terms of various performance evaluation measures. Overall, the study concludes that the proposed approach is highly effective to achieve the enhanced streamflow forecasting and could be a viable option for streamflow forecasting in other catchments.

APA, Harvard, Vancouver, ISO, and other styles

37

Souza Gonzaga, Lira, Dimitra L. Capone, Susan E. P. Bastian, Lukas Danner, and David W. Jeffery. "Using Content Analysis to Characterise the Sensory Typicity and Quality Judgements of Australian Cabernet Sauvignon Wines." Foods 8, no. 12 (December 17, 2019): 691. http://dx.doi.org/10.3390/foods8120691.

Full text

Abstract:

Understanding the sensory attributes that explain the typicity of Australian Cabernet Sauvignon wines is essential for increasing value and growth of Australia’s reputation as a fine wine producer. Content analysis of 2598 web-based wine reviews from well-known wine writers, including tasting notes and scores, was used to gather information about the regional profiles of Australian Cabernet Sauvignon wines and to create selection criteria for further wine studies. In addition, a wine expert panel evaluated 84 commercial Cabernet Sauvignon wines from Coonawarra, Margaret River, Yarra Valley and Bordeaux, using freely chosen descriptions and overall quality scores. Using content analysis software, a sensory lexicon of descriptor categories was built and frequencies of each category for each region were computed. Distinction between the sensory profiles of the regions was achieved by correspondence analysis (CA) using online review and expert panellist data. Wine quality scores obtained from reviews and experts were converted into Australian wine show medal categories. CA of assigned medal and descriptor frequencies revealed the sensory attributes that appeared to drive medal-winning wines. Multiple factor analysis of frequencies from the reviews and expert panellists indicated agreement about descriptors that were associated with wines of low and high quality, with greater alignment at the lower end of the wine quality assessment scale.

APA, Harvard, Vancouver, ISO, and other styles

38

Ervin, M. C., and J. R. Morgan. "Groundwater control around a large basement." Canadian Geotechnical Journal 38, no. 4 (August 1, 2001): 732–40. http://dx.doi.org/10.1139/t01-011.

Full text

Abstract:

Melbourne's Crown Casino was constructed on a site bordering the Yarra River and underlain by problem soils of the Coode Island Silt Formation. The development needed to provide two levels of basement car park over the entire site. An innovative approach to groundwater control around the excavation was required to avoid depressurisation of adjoining soils, leading to settlements. Analysis showed a conventional bentonite cut-off wall would still allow depressurisation by lateral flow through the Coode Island Silt during the construction period. The high cost and construction difficulty of a very low permeability wall mitigated against it. An hydraulic wall was proposed in conjunction with a conventional cut-off wall. This comprised a curtain of wick drains surrounding the cut-off wall and charged with water. Control of seepage through an underlying aquifer by a cut-off wall was considered, but a more cost-effective method using recharge by wells was adopted when shown necessary. Monitoring of groundwater pressures around the site showed that the maximum change in water pressure was less than 1 m head, the design criterion. Part way through construction, recharge was initiated when monitoring of the deep aquifer showed pressure reduction attributed to vertical leakage through a basalt tongue.Key words: excavation, basements, groundwater, clays, settlement, monitoring.

APA, Harvard, Vancouver, ISO, and other styles

39

Hassell, Kathryn, Vincent Pettigrove, Nicola Beresford, Susan Jobling, and Anu Kumar. "No evidence of exposure to environmental estrogens in two feral fish species sampled from the Yarra River, Australia: A comparison with Northern Hemisphere studies." Ecotoxicology and Environmental Safety 131 (September 2016): 104–17. http://dx.doi.org/10.1016/j.ecoenv.2016.05.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Entwisle, TJ. "Phenology of the Cladophora-Stigeoclonium community in Two Urban Creeks of Melbourne." Marine and Freshwater Research 40, no. 5 (1989): 471. http://dx.doi.org/10.1071/mf9890471.

Full text

Abstract:

Cladophora glomerata and Stigeoclonium tenue dominate lowland urban creeks in the Yarra River basin of south-central Victoria. In Darebin and Merri Creeks, Cladophora produces extensive mats in summer and autumn, and is mostly replaced by Stigeoclonium in winter and spring. Although Stigeoclonium can grow all year round, it only outcompetes Cladophora in winter and spring, when air temperatures range between a maximum of < 15� C and a nightly minimum of < 10� C (water temperature < 15� C, usually about 10� C). The seasonal composition and abundance of these macroalgae depend on temperature and on the severity of, and time since, the last floods, and the effect that these factors have on interspecific competition. Features of the microhabitat (e.g. photon irradiance, substratum stability and composition, and mean flow rates) determine the range of these variations. The biomass of both macroalgae fluctuates widely; this is due mainly to floods, which can remove almost the entire standing crop. In off-seasons, both species are maintained by small resilient plants or protected populations (in culture, plants remain viable after up to 6 months in complete darkness). Filaments of Cladophora readily produce zoospores and new vegetative growth following dormancy. The prostrate thallus of Stigeoclonium initiates new erect filaments before zoospores are produced. An understanding of the large local and seasonal variations in macroalgal biomass is essential for biological monitoring programmes.

APA, Harvard, Vancouver, ISO, and other styles

41

Banks, S. C., M. P. Piggott, B. D. Hansen, N. A. Robinson, and A. C. Taylor. "Wombat coprogenetics: enumerating a common wombat population by microsatellite analysis of faecal DNA." Australian Journal of Zoology 50, no. 2 (2002): 193. http://dx.doi.org/10.1071/zo01072.

Full text

Abstract:

Genetic identification of individual animals from remotely collected DNA samples provides an alternative approach for the collection of data on populations of elusive or rare species. In this study we used DNA isolated from field-collected faecal samples to estimate the size of a population of common wombats (Vombatus ursinus) surviving in suburban Melbourne parkland. A pilot study revealed that microsatellite genotypes obtained from DNA in faeces were often incorrect, but that by carrying out three replicate polymerase chain reactions (PCRs) for each sample, we were able to reliably identify individuals. We conducted a mark-recapture study using the Mh-jackknife model to estimate the size of the wombat population at Mt Lofty Reserve, and identified 17 individuals - 10 males and seven females. The interpolated population size estimate was 19 with a 95% confidence interval of 18-32. The distribution of individual wombats' scats provided information on ranging behaviour. The genotypic database obtained was used to identify five of the individuals as putative immigrants, suggesting that the population is not isolated from others in a series of reserves along the Yarra River. However, the lack of a detectable female bias in immigration differs from our previous findings in continuous populations of this species. The level of genetic variation at the five loci analysed was also inconsistent with long-term isolation of the population.

APA, Harvard, Vancouver, ISO, and other styles

42

REYES, SCARLETH MARGARITA RAUDEZ, ROBERTO ANTONIO CANO ESPINOZA, and JENNIFER C. GIRÓN. "A new species and immature stages of the skiff beetle genus Yara Reichardt and Hinton (Coleoptera: Myxophaga: Hydroscaphidae) from Nicaragua." Zootaxa 4544, no. 1 (January 10, 2019): 125. http://dx.doi.org/10.11646/zootaxa.4544.1.8.

Full text

Abstract:

Yara marmontsedu, a new species in the family Hydroscaphidae (Coleoptera: Myxophaga), is described and illustrated. Specimens of Y. marmontsedu were collected at the Pijibay Creek, tributary of the Mico River in Chontales, Nicaragua. The immature stages are described and illustrated for the first time for a species of Yara. This is a contribution to the knowledge of the water beetle fauna of Nicaragua.

APA, Harvard, Vancouver, ISO, and other styles

43

Dhiman, Rekha. "NARMADAMAYI AMRITLAL VEGAD'S AESTHETIC." International Journal of Research -GRANTHAALAYAH 7, no. 11 (November 30, 2019): 185–88. http://dx.doi.org/10.29121/granthaalayah.v7.i11.2019.3733.

Full text

Abstract:

Shri Amritlal Vegad has been adorned with Narmada love, adorned with important honors such as 'Shikhar Samman', 'Sharad Joshi Samman', 'Srishna Samman' and Mahapandit Rahul Sanskritayan. He saw Narmada-beauty in his religion, deeds and culture. During the Narmada Pad Yatra you used to have only one mantra, 'Narmada how beautiful you are' chanting it completed your Narmada revolutions. During this time you felt that moment with enthusiasm. Shri Amritlal Vegad's Kala-yatra attains perfection only after attaining the personality of the Narmada River, which flows continuously in Madhya Pradesh. In your vein, the wave of consciousness across the veins can be seen through drawings, drawings, collages that were created during your Narmada Parakamma. The purpose of your post tour has been cultural rather than religious. You saw the beauty of the environment with kindness and reverence. ‘शिखर सम्मान’, ‘शरद जोशी सम्मान’, ‘सृजन सम्मान’ तथा महापंडित राहुल सांस्कृत्यायन जैसे महत्वपूर्ण सम्मानों से सुशोभित श्री अमृतलाल वेगड़ नर्मदा प्रेम से ओत-प्रोत रहे हैं। उन्होंने अपने धर्म, कर्म और संस्कृति में नर्मदा- सौंदर्य को ही देखा। नर्मदा पद यात्रा के दौरान आपका एक ही मंत्र होता था, ‘नर्मदा तुम कितनी सुन्दर हो’ यही जाप करते हुए ही अपनी नर्मदा परिक्रमायें पूरी की। इस दौरान आपने उस पल को उत्साह के साथ महसूस किया। मध्यप्रदेश में अनवरत प्रवाहित होने वाली जीवनदायिनी ‘नर्मदा नदी’ का व्यक्तित्व पाकर ही श्री अमृतलाल वेगड़ की कला-यात्रा पूर्णता को पाती है। आपकी नस-नस में, संपूर्ण शिराओं में चेतना की लहर के दर्शन रेखांकनों, चित्रों, कोलाज के माध्यम से किये जा सकते हैं, जो कि आपकी नर्मदा परकम्मा के दौरान सृजित किये गये। आपकी पद यात्रा का उद्देश्य धार्मिक न होकर सांस्कृतिक रहा है। आपने पर्यावरण सौंदर्य को आत्मीय और श्रद्धा से देखा।

APA, Harvard, Vancouver, ISO, and other styles

44

SILVA, ELDIR BANDEIRA DA, JOSÉ RIBEIRO DE ARAÚJO NETO, HELBA ARAÚJO DE QUEIROZ PALÁCIO, EUNICE MAIA DE ANDRADE, and YARA RODRIGUES ARAÚJO. "USO DA TERRA E INFLUÊNCIA NO ÍNDICE DE QUALIDADE DE ÁGUA: O CASO DO VALE DO RIO TRUSSU." IRRIGA 23, no. 2 (October 9, 2018): 334–58. http://dx.doi.org/10.15809/irriga.2018v23n2p334-358.

Full text

Abstract:

USO DA TERRA E INFLUÊNCIA NO ÍNDICE DE QUALIDADE DE ÁGUA: O CASO DO VALE DO RIO TRUSSU ELDIR BANDEIRA DA SILVA1; JOSÉ RIBEIRO DE ARAÚJO NETO2; HELBA ARAÚJO DE QUEIROZ PALÁCIO2; EUNICE MAIA DE ANDRADE1 E YARA RODRIGUES ARAÚJO2 1 Departamento de Engenharia Agrícola, Universidade Federal do Ceará-UFC, Campus do PICI, Bloco 804, Fortaleza-CE, Brasil. E-mail: eldir_2005@hotmail.com; eandrade.ufc@gmail.com. 2 Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE, Campus Iguatu, rodovia Iguatu-Várzea Alegre, Km 05, s/n, Iguatu-CE, Brasil. E-mail: juniorifcelabas@gmail.com; helbaraujo23@yahoo.com.br; yaraaraujo20@hotmail.com. 1 RESUMO Com o objetivo de avaliar a influência do uso e ocupação da terra no índice de qualidade de água (IQA) nos corpos hídricos superficiais e subterrâneas no vale perenizado do rio Trussu, Ceará, Brasil, investigou-se dados de qualidade de água em dois períodos distintos. O primeiro foi de set/2002 a fev/2004 e o segundo de abr/2013 a jul/2015. Foram realizadas 22 coletas de água em 9 estações amostrais, 5 superficiais e 4 subterrâneas. Foram consideradas as mesmas estações nos dois períodos, monitorando-se 6 atributos de qualidade de água, totalizando 2376 análises. A avaliação da qualidade das águas foi relizada com o emprego do IQA e diagrama de caixa. As mudanças no uso e ocupação da terra foram nítidas, passando a caatinga densa de 38,7% de ocupação da área de estudo em 2003 para 11,2% em 2013. Não foi verificada diferença estatística (P<0,05) da qualidade das águas superficiais e subterrâneas no tempo. Porém, as águas subterrâneas diferiram estatisticamente entre os pontos. As águas superficiais foram classificadas como boas segundo o IQA, já as águas subterrâneas, observando o mesmo índice, como regulares e ruins. Esses resultados evidenciam o crescimento das práticas agrícolas na região, com avanço significativo da área antropizada sobre os recursos naturais. Palavras-chave: cobertura do solo, águas superficiais e subterrâneas, geoprocessamento. SILVA, E. B. DA; ARAÚJO NETO, J. R. DE; PALÁCIO, H. A. DE Q.; ANDRADE, E. M. DE E ARAÚJO, Y. R. LAND USE AND INFLUENCE ON THE WATER QUALITY INDEX: THE CASE OF TRUSSU RIVER VALLEY 2 ABSTRACT In order to evaluate the influence of land use and occupation on surface and groundwater levels in Trussu river perennial valley, Ceará, Brazil, we aimed at investigating data of the water quality in two distinct years. The first one was from Sep / 2002 to Feb / 2004 and the second from Apr/2013 to Jul/2015. Twenty-two water samples were collected in 9 sampling stations, 5 from surface and 4 from underground. The same stations were considered in the two periods, monitoring 6 attributes of water quality, totaling 2376 analyzes. The water quality assessment was performed using the water quality index (IQA, in Portuguese) and cash flow diagram. The changes in land use and occupation were sharp, with the dense tropical dry forests (Caatinga) moving from 38.7% occupancy of the study area in 2003 to 11.2% in 2013. There was no significant difference (P <0.05) in surface and groundwater quality over time. However, groundwater differed statistically in the two points. The IQA of surface waters was classified as good, and of groundwater as regular and bad. These results show the growth of agricultural practices in the region, with significant advance of the anthropized area on natural resources. Keywords: groundcovers, surface water and groundwater, geoprocessing.

APA, Harvard, Vancouver, ISO, and other styles

45

Pupo da Silveira, Gabriel Rondina, Sérgio Campos, Aline Kuramoto Gonçalves, Fernanda Leite Ribeiro, and Yara Manfrin Garcia. "GEOMÁTICA APLICADA NA ANÁLISE DO CONFLITO DE USO DO SOLO EM ÁREAS DE PRESERVAÇÃO PERMANENTE." ENERGIA NA AGRICULTURA 34, no. 4 (December 5, 2019): 544–51. http://dx.doi.org/10.17224/energagric.2019v34n4p544-551.

Full text

Abstract:

GEOMÁTICA APLICADA NA ANÁLISE DO CONFLITO DE USO DO SOLO EM ÁREAS DE PRESERVAÇÃO PERMANENTE GABRIEL RONDINA PUPO DA SILVEIRA 1, SÉRGIO CAMPOS 1, ALINE KURAMOTO GONÇALVES 1, FERNANDA LEITE RIBEIRO2, YARA MANFRIN GARCIA1 1Departamento Engenharia Rural, FCA/UNESP/Botucatu, Fazenda Experimental Lageado, Av. Universitária, nº 3780 - Altos do Paraíso, Botucatu - SP, 18610-03, e-mails: gabrielrondina@hotmail.com, seca@fca.unesp.br, aline587@gmail.com, yaramanfrin@hotmail.com. 2 Departamento de Geociências, U niversidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid - Pr 445 Km 380 Cx. Postal 10.011 - Campus Universitário, PR, 86057-970, e-mail: flribeiro@yahoo.com. RESUMO: O trabalho visou obter o uso do solo da bacia do rio Araquazinho – São Manuel (SP) utilizando imagem de satélite e técnicas geomáticas na determinação das Áreas de Preservação Permanentes (APPs) e conflitos existentes na área. As bases cartográficas foram cartas planialtimétricas em formato digital georreferenciadas. O SIG-IDRISI Selva foi utilizado para realizar o georreferenciamento da imagem, geração dos buffers de APPs e o overlay para obtenção dos conflitos de uso além da confecção do mapa temático final. No software CartaLinx realizou-se a delimitação da área de estudo e delimitação dos elementos (limite, rede de drenagem e das áreas de uso e cobertura). O uso do solo da bacia mostrou que o uso da cana-de-açúcar foi a classe que ocupou 86,82 % (5815,63 ha) da área. As áreas de conflito mostraram que a maior parte das APPs, equivalente a 109,70 ha, estão sendo usadas para outros fins. As Áreas de Preservação Permanente e seus conflitos mostraram que uma boa parte da área da bacia em estudo precisa de cuidados com relação a legislação ambiental. Desta forma, o mapa temático permitiu o mapeamento da área gerando dados que auxiliarão nos futuros planejamentos de recuperação da área. Palavras-chaves: Sistema de Informação Geográfica, Geoprocessamento, Preservação Ambiental GEOMATICS APPLIED IN CONFLICT ANALYSIS OF LAND USE IN PERMANENT PRESERVATION AREAS ABSTRACT: This study aim obtaining the land use of Araquazinho River watershed, São Manuel, SP, using satellite image and geomatic techniques to determine the Permanent Preservation Areas (PPAs) and area conflicts. The cartographic bases were digital georeferenced planialtimetrics cards. The SIG-IDRISI Selva was used to image georeferencing, generation of PPAs buffers, in the overlay to obtain the conflicts use and to generate the final thematic map. In CartaLinx was done the delimitation of study area and elements (limit, drainage network and areas of use and coverage). Soil use showed that sugarcane use was the class that occupied 86.82% (5815.63 ha) area. The conflict areas showed that most of the PPA, equivalent of 109.70 ha, is being used for other purposes. Permanent Preservation Areas and their conflicts have shown that a big part of watershed needs to be taken care in relation to environmental legislation. So, the thematic map can allow mapping the area generating data that can assist in future recovery area planning. Keywords: Geographic Information System, Geoprocessing, Environmental preservation.

APA, Harvard, Vancouver, ISO, and other styles

46

Tagliarini, Felipe de Souza Nogueira, Mikael Timóteo Rodrigues, Bruno Timóteo Rodrigues, Yara Manfrin Garcia, and Sérgio Campos. "IMAGENS DE VEÍCULO AÉREO NÃO TRIPULADO APLICADAS NA OBTENÇÃO DO ÍNDICE DE VEGETAÇÃO POR DIFERENÇA NORMALIZADA." ENERGIA NA AGRICULTURA 36, no. 1 (July 20, 2021): 111–22. http://dx.doi.org/10.17224/energagric.2021v36n1p111-122.

Full text

Abstract:

IMAGENS DE VEÍCULO AÉREO NÃO TRIPULADO APLICADAS NA OBTENÇÃO DO ÍNDICE DE VEGETAÇÃO POR DIFERENÇA NORMALIZADA FELIPE DE SOUZA NOGUEIRA TAGLIARINI1, MIKAEL TIMÓTEO RODRIGUES2-3, BRUNO TIMÓTEO RODRIGUES1; YARA MANFRIN GARCIA1 E SÉRGIO CAMPOS1 1 Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas (FCA) - Universidade Estadual Paulista (UNESP), Avenida Universitária, nº 3780, Altos do Paraíso, CEP: 18610-034, Botucatu, São Paulo, Brasil. E-mail: felipe_tagliarini@hotmail.com; brunogta21@hotmail.com; yaramanfrin@hotmail.com; sergio.campos@unesp.br 2 Centro Universitário Dinâmica das Cataratas (UDC), Rua Castelo Branco, nº 440, Centro, CEP: 85852-010, Foz do Iguaçu, Paraná, Brasil. E-mail: mikael.rodrigues@udc.edu.br 3 Parque Tecnológico Itaipu (PTI), Avenida Tancredo Neves, nº 6731, Jardim Itaipu, Caixa Postal: 2039, CEP: 85867-900, Foz do Iguaçu, Paraná, Brasil. E-mail: mikael.rodrigues@pti.org.br. RESUMO: O advento dos Veículos Aéreos Não Tripulados (VANT) como ferramenta no sensoriamento remoto possibilitou uma plataforma atuante em diferentes áreas para o mapeamento com elevada precisão e resolução. O objetivo deste estudo consistiu na análise do Índice de Vegetação por Diferença Normalizada (NDVI) para elaboração de mapa temático por meio de aerofotogrametria e fotointerpretação, com maior detalhamento da vegetação devido à altíssima resolução espacial alcançada com o uso de imagens coletadas por VANT em trecho do rio Lavapés, dentro dos limites da Fazenda Experimental Lageado no município de Botucatu-SP. As imagens foram obtidas por meio dos sensores MAPIR Survey3W RGB e Survey3W NIR/InfraRED, embarcados em VANT multirrotor 3DR SOLO. Para construção dos ortomosaicos RGB e NDVI, as imagens foram processadas no software Pix4Dmapper 3.0. O resultado do NDVI proporcionou transição bem nítidas entre os alvos bióticos (vegetação) e os alvos abióticos (corpo d'água, solo e edificações), e também entre a própria vegetação, possibilitando a distinção da vegetação de porte arbóreo, com maior vigor vegetativo, em relação a vegetação de porte herbáceo. As imagens com elevada resolução espacial coletadas por VANT, demonstraram flexibilidade de utilização, possuindo elevado potencial para o mapeamento de dinâmica da paisagem e a resposta espectral da vegetação. Palavras-chaves: drone, índice radiométrico, sensoriamento remoto IMAGES OF UNMANNED AERIAL VEHICLE APPLIED TO OBTAIN THE NORMALIZED DIFFERENCE VEGETATION INDEX ABSTRACT: The advent of Unmanned Aerial Vehicle (UAV) as a tool in remote sensing has enabled a platform acting in different areas for mapping with high precision and resolution. This study aimed to analyze the Normalized Difference Vegetation Index (NDVI) for the elaboration of thematic map through aerophotogrammetry and photointerpretation, with greater detail of vegetation due to high spatial resolution achieved with the use of images collected by UAV in a stretch of Lavapés river, inside the domains of Lageado Experimental Farm in the municipality of Botucatu-SP. The images were obtained through MAPIR Survey3W RGB and Survey3W NIR/InfraRED sensors, aboard a 3DR SOLO multirotor UAV. For constructing RGB and NDVI orthomosaics, the images were processed using Pix4Dmapper 3.0 software. The NDVI result provided a clear transition among biotic targets (vegetation) and abiotic targets (water, soil and buildings), and among the vegetation itself, with greater vegetative vigor, making possible the distinction of arboreal vegetation, in relation to herbaceous vegetation. The images with high spatial resolution collected by UAV demonstrated the flexibility of use, having high potential to mapping landscape dynamics and the spectral response of vegetation. Keywords: drone, radiometric index, remote sensing.

APA, Harvard, Vancouver, ISO, and other styles

47

De Souza Nogueira Tagliarini, Felipe, Mikael Timóteo Rodrigues, Bruno Timóteo Rodrigues, Ana Clara De Barros, Yara Manfrin Garcia, and Sergio Campos. "ÍNDICE RADIOMÉTRICO NDVI EM ÁREA DE PRESERVAÇÃO PERMANENTE OBTIDO POR MEIO DE AERONAVE REMOTAMENTE PILOTADA." IRRIGA 26, no. 3 (November 18, 2021): 717–31. http://dx.doi.org/10.15809/irriga.2021v26n3p717-731.

Full text

Abstract:

ÍNDICE RADIOMÉTRICO NDVI EM ÁREA DE PRESERVAÇÃO PERMANENTE OBTIDO POR MEIO DE AERONAVE REMOTAMENTE PILOTADA* FELIPE DE SOUZA NOGUEIRA TAGLIARINI1; MIKAEL TIMÓTEO RODRIGUES2-3; BRUNO TIMÓTEO RODRIGUES3; ANA CLARA DE BARROS1; YARA MANFRIN GARCIA1 E SÉRGIO CAMPOS1 * Artigo oriundo da tese de doutorado de Felipe de Souza Nogueira Tagliarini 1 Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas (FCA) - Universidade Estadual Paulista (UNESP), Avenida Universitária, nº 3780, Altos do Paraíso, CEP: 18610-034, Botucatu, São Paulo, Brasil. E-mail: felipe_tagliarini@hotmail.com; anaclara_inha@hotmail.com; yaramanfrin@hotmail.com; sergio.campos@unesp.br 2 Centro Universitário Dinâmica das Cataratas (UDC), Rua Castelo Branco, nº 440, Centro, CEP: 85852-010, Foz do Iguaçu, Paraná, Brasil. E-mail: mikael.rodrigues@udc.edu.br 3 Parque Tecnológico Itaipu (PTI), Avenida Tancredo Neves, nº 6731, Jardim Itaipu, Caixa Postal: 2039, CEP: 85867-900, Foz do Iguaçu, Paraná, Brasil. E-mail: mikael.rodrigues@pti.org.br; bruno.tr@bolsista.pti.org.br 1 RESUMO O emprego das Aeronaves Remotamente Pilotadas (RPA) como ferramenta no sensoriamento remoto possibilitou uma plataforma operante no mapeamento agrícola e ambiental com elevada precisão. O objetivo deste estudo consistiu na análise do Índice de Vegetação por Diferença Normalizada (NDVI) em Área de Preservação Permanente (APP) ripária para elaboração de mapas temáticos por meio de aerofotogrametria e fotointerpretação, com maior detalhamento da vegetação devido à altíssima resolução espacial alcançada com o uso de imagens coletadas por RPA em trecho do rio Lavapés, dentro dos limites da Fazenda Experimental Lageado no município de Botucatu, SP. As imagens foram obtidas por meio dos sensores MAPIR Survey3W RGB e Survey3W NIR/InfraRED, embarcados em RPA multirrotor 3DR SOLO. Para construção dos ortomosaicos RGB e NDVI, as imagens foram processadas no aplicativo Pix4Dmapper. O resultado do NDVI proporcionou transição bem nítidas entre os alvos bióticos (vegetação) e os alvos abióticos (corpo d'água), e também entre a própria vegetação, possibilitando a distinção da vegetação de porte arbóreo, com maior vigor vegetativo, em relação à vegetação de porte herbáceo. As imagens com elevada resolução espacial coletadas por RPA, demonstraram flexibilidade de utilização, possuindo elevado potencial para o mapeamento da dinâmica da paisagem e a resposta espectral da vegetação. Palavras-chave: índice de vegetação, fotogrametria aérea, veículo aéreo não tripulado, sensoriamento remoto. TAGLIARINI, F. S. N.; RODRIGUES, M. T.; RODRIGUES, B. T.; BARROS, A. C.; GARCIA, Y. M.; CAMPOS, S. NDVI RADIOMETRIC INDEX IN PERMANENT PRESERVATION AREA OBTAINED THROUGH REMOTELY PILOTED AIRCRAFT 2 ABSTRACT The use of Remotely Piloted Aircraft (RPA) as a tool in remote sensing has enabled an operant platform in agricultural and environmental mapping with high precision. This study aimed to analyze the Normalized Difference Vegetation Index (NDVI) in riparian Permanent Preservation Areas (APP) for elaboration of thematic maps through aerophotogrammetry and photointerpretation, with greater detail of vegetation due to the very high spatial resolution achieved with the use of images collected by RPA in a stretch of Lavapés river, inside the domains of Lageado Experimental Farm in the municipality of Botucatu, SP. The images were obtained through MAPIR Survey3W RGB and Survey3W NIR/InfraRED sensors, aboard a 3DR SOLO multirotor RPA. For the construction of RGB and NDVI orthomosaics, the images were processed using Pix4Dmapper app. The NDVI result provided a clear transition among biotic targets (vegetation) and abiotic targets (waterbody), and also among the vegetation itself, with greater vegetative vigor, making possible the distinction of arboreal vegetation, in relation to herbaceous vegetation. The images with high spatial resolution collected by RPA, demonstrated flexibility of use, having high potential to mapping landscape dynamics and the spectral response of vegetation. Keywords: vegetation index, aerial photogrammetry, unmanned aerial vehicle, remote sensing.

APA, Harvard, Vancouver, ISO, and other styles

48

Masel, Carolyn, and Matthew Ryan. "Place, History and Story: Tony Birch and the Yarra River." Australian Literary Studies, May 5, 2016. http://dx.doi.org/10.20314/als.00776e89d0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Barua, S., AWM Ng, and BJC Perera. "Drought assessment and forecasting: A case study on the Yarra River catchment in Victoria, Australia." Australian Journal of Water Resources 15, no. 2 (2012). http://dx.doi.org/10.7158/w10-848.2012.15.2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Eadie, Jennifer. "So many birds/one river: A fictocritical response to the Port-Yarta Puulti River, Kaurna Country." TEXT 25, Special 63 (October 28, 2021). http://dx.doi.org/10.52086/001c.29719.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Yarra River'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles