River Connectivity, Habitat Fragmentation and Related Restoration Measures

Seliger, Carina; Zeiringer, Bernhard

doi:10.1007/978-3-319-73250-3_9

Cited by 20 publications

(18 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To be successful in terms of biological conservation, the restoration of ecological corridors needs to be coupled with plans of reintroduction and restocking of autochthonous species and, conversely, with plans of control of exotic species, along with habitat restora-tion measures. As river fragmentation is considered one of the major threats for long-way migrant fishes, huge plans of defragmentation have been carried out in recent years in many regions worldwide [48][49][50], with the main goal of promoting the return of species such as sturgeons and eels in the areas where they have been missed for many years. Specifically, in Northern Italy, the restoration of the ecological corridor from the Adriatic Sea to Lake Lugano is the most important case of river defragmentation in Italy [17].…”

Section: Discussionmentioning

confidence: 99%

Genetic Investigation of Four Beluga Sturgeon (Huso huso, L.) Broodstocks for its Reintroduction in the Po River Basin

et al. 2021

View full text Add to dashboard Cite

The reintroduction of the extinct beluga sturgeon (Huso huso L.), an anadromous species with economic and traditional relevance, is a priority in next conservation strategies in Northern Italy. The EU-LIFE NATURA project aims to reintroduce the beluga sturgeon in the Po River basin through a captive breeding program. Critical requirements for the success of the program are river connectivity and knowledge of genetic diversity of the selected broodstocks to ensure self-sustainability of reintroduced populations. Here, the four broodstocks used for the reintroduction of beluga sturgeon have been genetically screened, genotyping 13 loci and sequencing mitochondrial DNA cytochrome b (Cyt b) gene and the entire mitochondrial DNA control region (D-Loop). The four broodstocks showed a medium-high level of nuclear genetic variability and the presence of two sub-populations, evidencing a total level of inbreeding coefficients able to sustain the good potential as future breeders. Mitochondrial analyses showed a genetic variability comparable to wild populations, further strengthening the positive potential of the investigated broodstock. Therefore, this study, showed how the degree of genetic diversity found within the four broodstocks used for H. huso reintroduction in the Po River basin could be suitable to ensure the success of the program, avoiding the inbreeding depression associated with founder effect and captive breeding.

show abstract

Section: Discussionmentioning

confidence: 99%

Genetic Investigation of Four Beluga Sturgeon (Huso huso, L.) Broodstocks for its Reintroduction in the Po River Basin

et al. 2021

View full text Add to dashboard Cite

show abstract

“…A river can maintain its health and deliver its ecosystem services provided that its three-dimensional connectivity is conserved: longitudinally, from headwaters to confluences and the sea; laterally, from the main channel to the floodplains on both sides of the river; and vertically, from the river vertically down towards the hyporheic interstitial and the groundwater. This spatial connectivity makes the transportation of matter and energy by a river possible, as well as the dispersion of organisms [61].…”

Section: Sediment Dynamics and River Connectivitymentioning

confidence: 99%

Sustainable Management Options for Healthy Rivers in South Asia: The Case of Brahmaputra

Pradhan

Das²,

Gupta

et al. 2021

Sustainability

View full text Add to dashboard Cite

The Brahmaputra is one of the largest river systems of South Asia, providing life-supporting services to about 70 million people. Massive flooding, land erosion, over-exploitation of water, excessive fishing, habitat degradation and fragmentation, exploitation of flood plains, climate change impacts, absence of integrated basin wide management, and transboundary cooperation are major challenges for the present and future sustainability and development in the basin. Although hydrological connectivity is intact in most of the main course of the river, the infrastructure development plans may convert the Brahmaputra to a predominantly managed river system. In this regard, this paper examines the physiographic, ecological, hydrological, and socioeconomic status of the Brahmaputra river, its transnational basin in South Asia, and the basin population in the cross-cutting context to explore its sustainable management options. For a durable future of the river and its communities, an integrated management mechanism among the basin countries with the objective of equitable benefit sharing, disaster risk management, and resilience building is needed. The suggested strategies will help in maintaining the ecohydrological health and utilitarian services of the river for the socioeconomic development of millions of poor and marginalized people living in the basin.

show abstract

“…River development adversely affects native freshwater fish through changes to the seasonal timing and volume of river flows (Zeiringer et al 2018), obstruction of movement pathways (Baumgartner et al 2014a) and habitat alteration (Seliger and Zeiringer 2018). Cumulatively, these factors act in concert and over many years, which can have substantial implications for populations and community composition.…”

Section: Introductionmentioning

confidence: 99%

Contrasting natal origin and movement history informs recovery pathways for three lowland river species following a mass fish kill

Thiem

Baumgartner

Fanson

et al. 2021

Mar. Freshwater Res.

View full text Add to dashboard Cite

Understanding the spatial and temporal scales over which key population processes occur is fundamental to effective fisheries management, especially when informing recovery actions following extreme events. In 2018-19, hypoxia-induced fish kills occurred in the lower Darling River, south-eastern Australia. We collected carcasses of three potamodromous species that perished during these events to reconstruct their lifetime movements and identify potential recovery mechanisms. Golden perch Macquaria ambigua, Murray cod Maccullochella peelii and silver perch Bidyanus bidyanus otolith 87 Sr/ 86 Sr profiles were compared with water 87 Sr/ 86 Sr ratios to better understand natal provenance and movement history, and to identify the scale at which migration influences population processes. Golden perch were predominantly locally spawned (Darling River), although we found some evidence of emigration into the nearby Murray River early in life and return movements into the Darling River. Murray cod were mainly locally spawned and thereafter lifelong residents, with some evidence of stocking supplementing populations. Silver perch were mostly immigrants, with the Murray River (.500 km away) the principal source of fish. For recovery of native fish populations to be effective in the Darling River, recovery actions are required that incorporate knowledge on the relevant spatial and temporal scales over which life history processes occur.

show abstract

River Connectivity, Habitat Fragmentation and Related Restoration Measures

Cited by 20 publications

References 46 publications

Genetic Investigation of Four Beluga Sturgeon (Huso huso, L.) Broodstocks for its Reintroduction in the Po River Basin

Genetic Investigation of Four Beluga Sturgeon (Huso huso, L.) Broodstocks for its Reintroduction in the Po River Basin

Sustainable Management Options for Healthy Rivers in South Asia: The Case of Brahmaputra

Contrasting natal origin and movement history informs recovery pathways for three lowland river species following a mass fish kill

Contact Info

Product

Resources

About