Learning Together for with the Martuwarra Fitzroy River

Co-production across scientific and Indigenous knowledge systems has become a cornerstone of research to enhance knowledge, practice, ethics, and foster sustainability transformations. However, the profound differences in world views and the complex and contested histories of nation-state colonisation on Indigenous territories, highlight both opportunities and risks for Indigenous people when engaging with knowledge co-production. This paper investigates the conditions under which knowledge co-production can lead to improved Indigenous adaptive environmental planning and management among remote land-attached Indigenous peoples through a case study with ten Traditional Owner groups in the Martuwarra (Fitzroy River) Catchment in Western Australia’s Kimberley region. The research team built a 3D map of the river and used it, together with an interactive table-top projector, to bring together both scientific and Indigenous spatial knowledge. Participatory influence mapping, aligned with Traditional Owner priorities to achieve cultural governance and management planning goals set out in the Fitzroy River Declaration, investigated power relations. An analytical framework, examining underlying mechanisms of social learning, knowledge promotion and enhancing influence, based on different theories of change, was applied to unpack the immediate outcomes from these activities. The analysis identified that knowledge co-production activities improved the accessibility of the knowledge, the experiences of the knowledge users, strengthened collective identity and partnerships, and strengthened Indigenous-led institutions. The focus on cultural governance and management planning goals in the Fitzroy River Declaration enabled the activities to directly affect key drivers of Indigenous adaptive environmental planning and management—the Indigenous-led institutions. The nation-state arrangements also gave some support to local learning and decision-making through a key Indigenous institution, Martuwarra Fitzroy River Council. Knowledge co-production with remote land-attached Indigenous peoples can improve adaptive environmental planning and management where it fosters learning together, is grounded in the Indigenous-led institutions and addresses their priorities.

Recognizing the Martuwarra's First Law Right to Life as a Living Ancestral Being

Traditional custodians of the Martuwarra (Fitzroy River) derive their identity and existence from this globally significant river. The First Laws of the Martuwarra are shared by Martuwarra Nations through a common songline, which sets out community and individual rights and duties. First Law recognizes the River as the Rainbow Serpent: a living ancestral being from source to sea. On 3 November 2016, the Fitzroy River Declaration was concluded between Martuwarra Nations. This marked the first time in Australia when both First Law and the rights of nature were recognized explicitly in a negotiated instrument. This article argues for legal recognition within colonial state laws of the Martuwarra as a living ancestral being by close analogy with the case concerning the Whanganui River. We seek to advance the scope of native title water rights in Australia and contend that implementation of First Law is fundamental for the protection of the right to life of the Martuwarra.

A Conservation and Management Plan for the National Heritage Listed Fitzroy River Catchment Estate (No. 1)

The Martuwarra Fitzroy River Council (Martuwarra Council) has prepared this document to engage widely and to articulate its ambitions and obligations to First Law, customary law and their guardianship authority and fiduciary duty to protect the Martuwarra’s natural and cultural heritage. This document outlines a strategic approach to Heritage Conservation and Management Planning, communicating to a wide audience, the planning principles, key initiatives, and aspirations of the Martuwarra Traditional Owners to protect their culture, identity and deep connection to living waters and land. Finer granularity of action items required to give effect to this Conservation and Management Plan for the National Heritage Listed Fitzroy River Catchment Estate are outlined in section 7 and which will be more fully explored by the Martuwarra Council in the coming months and years.

Recruitment of a critically endangered sawfish into a riverine nursery depends on natural flow regimes

The freshwater sawfish (Pristis pristis) was recently listed as the most Evolutionarily Distinct and Globally Endangered (EDGE) animal. The Fitzroy River in the remote Kimberley region of north-western Australia represents a significant stronghold for the species, which uses the freshwater reaches of the river as a nursery. There is also mounting pressure to develop the water resources of the region for agriculture that may substantially affect life history dynamics of sawfish in this system. However, the relationship between hydrology and population dynamics of freshwater sawfish was unknown. We used standardized catch data collected over 17 years to determine how wet season volume influences recruitment of freshwater sawfish into their riverine nursery. Negligible recruitment occurred in years with few days of high flood levels (above 98th percentile of cease-to-flow stage height), and relatively high recruitment occurred in years with 14 or more days of high flood levels. This relationship is indicative of a distinct boom-or-bust cycle, whereby freshwater sawfish rely almost entirely on the few years with large wet season floods, and the brief periods of highest water levels within these years, to replenish juvenile populations in the Fitzroy River nursery. This has direct implications for sustainable water resource management for the Fitzroy River basin in order to preserve one of the last known intact nursery habitats for this globally threatened species.

Leucaena production in the Fitzroy River catchment, central Queensland, Australia

Poster presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia.

Seasonal and spatial controls on N2O concentrations and emissions in low-nitrogen estuaries: Evidence from three tropical systems

Estuarine N2O emissions contribute to the atmospheric N2O budget, but little is known about estuary N2O fluxes under low dissolved inorganic nitrogen (DIN) conditions. We present high-resolution spatial surveys of N2O concentrations and water-air fluxes in three low-DIN (NO3−< 30µmol L−1) tropical estuaries in Queensland, Australia (Johnstone River, Fitzroy River, Constant Creek) during consecutive wet and dry seasons. Constant Creek had the lowest concentrations of dissolved inorganic nitrogen (DIN; 0.01 to 5.4µmol L−1of NO3−and 0.09 to 13.6µmol L−1of NH4+) and N2O (93–132% saturation), and associated lowest N2O emissions (– 1.4 to 8.4µmol m−2d−1) in both seasons. The other two estuaries exhibited higher DIN inputs and higher N2O emissions. The Johnstone River Estuary had the highest N2O concentrations (97–245% saturation) and emissions (– 0.03 to 25.7µmol m−2d−1), driven by groundwater inputs from upstream sources, with increased N2O input in the wet season. In the Fitzroy River Estuary, N2O concentrations (100–204% saturation) and emissions (0.03–19.5µmol m−2d−1) were associated with wastewater inputs, which had a larger effect during the dry season and were diluted during the wet season. Overall N2O emissions from the three tropical estuaries were low compared to previous studies, and at times water-air N2O fluxes were actually negative, indicating that N2O consumption occurred. Low water column NO3−concentration (i.e. < 5µmol L−1) appears to promote negative water-air N2O fluxes in estuary environments; considering the number of estuaries and mangrove creeks where DIN falls below this threshold, negative water-air N2O fluxes are likely common.

A New Cowrie from the Estuaries of Northwestern Australia

A new species of cowrie in the genus Erronea (Ipserronea) is described from the muddy coastal estuaries of King Sound, Western Australia, at the mouth of the Fitzroy River. The new cowrie, here named Erronea (Ipserronea) garyi n. sp., is the smallest-known member of its subgenus and inhabits oyster and Pinna beds on intertidal mud flats adjacent to mangrove jungles and river inlets. This new mudflat-dwelling dwarf cowrie is the fifth-known species in the subgenus Ipserronea