Assessing the impact of habitat restoration on the rates of recovery of four native fish species using advanced statistical models. This project will develop statistical modelling tools to assess how quickly threatened native fish populations recover following habitat restoration. The outcome of this project will aid in understanding the use of habitat restoration in managing endangered stocks of Murray Cod, Trout Cod, Silver Perch and Golden Perch in the Murray River.
How arid zone wetlands persist: linking ecological dynamics with hydrological regimes . This project will investigate how aquatic food webs assemble and persist in mound springs, relict streams and river pools in the Australian arid zone. Knowing how aquatic systems respond to wet and dry phases is the first step towards ‘climate proofing ’ these systems against future extreme events.
Improved biomonitoring of urban freshwater ecosystems using DNA barcodes. This project aims to provide rapid diagnostic detection of environmental change in aquatic ecosystems at reduced cost. Next-generation sequencing (NGS) can transform monitoring of aquatic ecosystems by identifying many species in multiple biological samples. This project aims to use NGS technology to identify macroinvertebrate species as biological indicators in urban freshwater ecosystems to provide more rapid, sensitive ....Improved biomonitoring of urban freshwater ecosystems using DNA barcodes. This project aims to provide rapid diagnostic detection of environmental change in aquatic ecosystems at reduced cost. Next-generation sequencing (NGS) can transform monitoring of aquatic ecosystems by identifying many species in multiple biological samples. This project aims to use NGS technology to identify macroinvertebrate species as biological indicators in urban freshwater ecosystems to provide more rapid, sensitive and cost-effective monitoring compared to traditional methods. The project uses DNA barcodes that identify species to detect species in samples processed with NGS. The project also plans to use previously collected samples to explore species diversity and detect indicator species.Read moreRead less
Restoring functional links between riparian zones and streams by enhancing structural retention. This project aims to test whether structural retention, whereby plant detritus (logs, bark, leaves) is trapped and retained within river channels, can offset the impacts caused by widespread clearance of vegetation along river banks, a widespread problem in Australia and the world. Theoretically, retention is a major environmental driver of ecosystem change in rivers, but this has rarely been tested, ....Restoring functional links between riparian zones and streams by enhancing structural retention. This project aims to test whether structural retention, whereby plant detritus (logs, bark, leaves) is trapped and retained within river channels, can offset the impacts caused by widespread clearance of vegetation along river banks, a widespread problem in Australia and the world. Theoretically, retention is a major environmental driver of ecosystem change in rivers, but this has rarely been tested, particularly in a restoration context. The aim of this project is to show that increasing retention results in higher species diversity, thus providing managers with a relatively straightforward method for improving the environmental conditions of rivers, while simultaneously testing three hypotheses about rectifying ecosystem degradation caused by human impacts.Read moreRead less
Dispersal and species coexistence across patchy landscapes. Millions of dollars are spent rehabilitating degraded river ecosystems in the absence of knowing whether and how species will be able to disperse to and re-populate repaired sections. This research will provide definitive information allowing restoration efforts to be targeted properly in streams surrounded by, and serving, agricultural areas.
Species coexistence in the real world. This project aims to discover how similar species co-exist without weaker competitors going extinct. Hypotheses offer explanations for stable coexistence in the presence of competition, but logistic barriers mean field tests are almost completely lacking. Recent research on competition and dispersal presents an opportunity to deliver tests using riverine species, leading to experiments at landscape scales. The research will quantify the role of environmenta ....Species coexistence in the real world. This project aims to discover how similar species co-exist without weaker competitors going extinct. Hypotheses offer explanations for stable coexistence in the presence of competition, but logistic barriers mean field tests are almost completely lacking. Recent research on competition and dispersal presents an opportunity to deliver tests using riverine species, leading to experiments at landscape scales. The research will quantify the role of environmental variability and dispersal in permitting stable coexistence of species, thus filling a major knowledge gap. The project expects to provide fresh avenues for research into the causes of species losses – particularly for the 70 per cent that are invertebrates.Read moreRead less
Dispersal and recruitment of species across landscapes: a new synthesis. This project aims to ask: does failure to disperse successfully across landscapes limit the abundances and diversity of species in habitat patches? This is a central question in ecology. The project expects to generate new knowledge about the links between dispersal success and population numbers by using recent advances in river ecology that have overcome logistical barriers to hypothesis tests. Expected outcomes include n ....Dispersal and recruitment of species across landscapes: a new synthesis. This project aims to ask: does failure to disperse successfully across landscapes limit the abundances and diversity of species in habitat patches? This is a central question in ecology. The project expects to generate new knowledge about the links between dispersal success and population numbers by using recent advances in river ecology that have overcome logistical barriers to hypothesis tests. Expected outcomes include new insights into why dispersal failures occur and how they are associated with low population numbers. Benefits should include improved advice to conservation managers about extinction risks, and unique, tangible outcomes for fundamental ecological research in Australia that will spring from international collaboration.Read moreRead less
Explaining species diversity in a fractal world. This project aims to improve our understanding of landscape-scale patterns of species diversity, particularly invertebrates. A central question in ecology asks how habitat patchiness interacts with dispersal abilities to determine species diversity. Field tests of hypotheses are lacking due to logistic difficulties in quantifying habitat patchiness and dispersal over landscape scales. A new model proposes that fractals (a clever way of measuring e ....Explaining species diversity in a fractal world. This project aims to improve our understanding of landscape-scale patterns of species diversity, particularly invertebrates. A central question in ecology asks how habitat patchiness interacts with dispersal abilities to determine species diversity. Field tests of hypotheses are lacking due to logistic difficulties in quantifying habitat patchiness and dispersal over landscape scales. A new model proposes that fractals (a clever way of measuring environmental complexity) can capture both habitat patchiness and species' responses. Advances in river ecology have solved the logistic problems and will allow tests to compare the three main hypotheses about species diversity. The project aims to improve information about which tools will provide the best guidance, benefitting the discipline of ecology and conservation managers.Read moreRead less
Revolutionising biodiversity monitoring in freshwater ecosystems using environmental DNA. Australian biodiversity is declining at an unprecedented rate and freshwater species are particularly at risk. Effective conservation of freshwater biodiversity depends on reliable, accurate and cost-efficient monitoring techniques for assessing species communities and key environmental assets and threats. However, current techniques are inefficient, expensive and highly invasive. This project aims to utili ....Revolutionising biodiversity monitoring in freshwater ecosystems using environmental DNA. Australian biodiversity is declining at an unprecedented rate and freshwater species are particularly at risk. Effective conservation of freshwater biodiversity depends on reliable, accurate and cost-efficient monitoring techniques for assessing species communities and key environmental assets and threats. However, current techniques are inefficient, expensive and highly invasive. This project aims to utilise a novel methodology known as environmental DNA to revolutionise biodiversity surveys in freshwater environments, and aims to lead to a substantial increase in positive conservation outcomes through cost-efficient and accurate assessments of the distributions and abundances of both native and introduced species.Read moreRead less
Restoration trajectories of stream ecosystems degraded by urban stormwater runoff: a large-scale experiment in urban hydrology and stream ecology. This project aims to assess innovative dispersed stormwater retention systems in catchments for protection and restoration of urban streams. It will improve the ecological condition of several study streams and provide scientific support for new policies and practices for urban water management, with multiple environmental and community benefits.