Marine and Freshwater Research
Volume 76
Number 12 2025
Blooms of nitrogen fixing cyanobacteria have become increasingly frequent over the past decade along the Murray River, Australia. We assessed the influence of nitrogen and phosphorus on both cyanobacterial and phytoplankton communities through six in situ nutrient amendment experiments. We found that phosphorus is the key limiting nutrient for cyanobacterial growth, whereas the broader phytoplankton community is often co-limited by nitrogen and phosphorus.
This research has examined water-related challenges in Pakistan, evaluated current environmental management practices and compared strategies with those in China, India and the UK. It has highlighted the need for comprehensive water governance, aligning with global standards and the UN SDGs. The study underscored the importance of legal cooperation, sustainability and international collaboration for effective water management across industrial and agricultural sectors.
This article belongs to the collection: Global perspectives: sustainable management of freshwater aquatic ecosystem services and water resources.
Temperature has profound effects on the biology and ecology of species. However, in freshwater environments, water temperature observations can be difficult to attain across large spatial and temporal scales. In this study, we used readily available environmental data to predict water temperature across south-eastern Australia. Our approach showed that air temperature and elevation are excellent predictors of water temperature.
We used ArcGIS software and the InVEST model to identify the regional recessive hydro-ecological space of the Qinhuai River Basin in Nanjing, Jiangsu Province, China. We visualised the three types of recessive hydro-ecological spaces (water source conservation, water purification, and soil and water conservation), and quantitatively analysed the spatial distribution characteristics of each type, which led us to the relevant conclusions.
This article belongs to the collection: Global perspectives: sustainable management of freshwater aquatic ecosystem services and water resources.
The pink shrimp (Penaeus brasiliensis) is an important species for artisanal fishing in Espírito Santo, south-eastern Brazil. This study showed how these shrimps reproduce and grow in this region. We found that the shrimp reproduce earlier than in other areas, with their main reproductive season being between February and May, peaking in March and April. These findings are essential for ensuring the sustainable management and conservation of this valuable resource.
The hairy marron is a critically endangered freshwater crayfish restricted to a single river in south-western Western Australia. This study investigated novel methods of artificial incubation to hatch eggs, dropped from a female held in captivity, and rear subsequent juveniles. Of the dropped eggs, 85% hatched successfully and 74% of the juveniles survived and grew in a recirculating aquaculture system. The study indicated that artificial incubation and captive rearing of dropped eggs is a viable option for hairy marron and may have implications for other freshwater crayfish species.
The study investigated the influence of hydrological wellness design on the psychological health and social interaction of elderly people in rural areas of Guangzhou. The design positively influenced health response assessments, including mental health, social behaviour and physical health, and multimodal interaction perception mediated the relationship between hydrological design perception and health response. The results emphasise potential of hydrological design in enhancing wellbeing of the elderly, particularly by reducing loneliness and promoting social integration, and guide future designs aimed at improving the health of the elderly through integrated natural elements.
This article belongs to the collection: Global perspectives: sustainable management of freshwater aquatic ecosystem services and water resources.
Seaford Swamp was listed as a Ramsar Wetland in 2001 when it was described as mostly fresh. Analysis of microfossils preserved in sediment cores showed a 7000-year marine–estuarine history, with a switch to fresh in the late 19th Century resulting from engineering works for urban development. The identification of the past condition provides alternate targets for management under climate change.
, Jordan A. Facey, Huy Andrew Luong, Jarrod E. Walton, Tsuyoshi Kobayashi, Nicholas Williamson, Justin R. Seymour and Simon M. Mitrovic
