Extreme flood events favour floodplain mollusc diversity

Hydrobiologia ◽  
2008 ◽  
Vol 621 (1) ◽  
pp. 63-73 ◽  
Author(s):  
Christiane Ilg ◽  
Francis Foeckler ◽  
Oskar Deichner ◽  
Klaus Henle
Keyword(s):  
Mycorrhiza ◽  
2021 ◽  
Author(s):  
P. W. Thomas

AbstractVery little is known about the impact of flooding and ground saturation on ectomycorrhizal fungi (EcM) and increasing flood events are expected with predicted climate change. To explore this, seedlings inoculated with the EcM species Tuber aestivum were exposed to a range of flood durations. Oak seedlings inoculated with T. aestivum were submerged for between 7 and 65 days. After a minimum of 114-day recovery, seedling growth measurements were recorded, and root systems were destructively sampled to measure the number of existing mycorrhizae in different zones. Number of mycorrhizae did not display correlation with seedling growth measurements. Seven days of submersion resulted in a significant reduction in mycorrhizae numbers and numbers reduced most drastically in the upper zones. Increases in duration of submersion further impacted mycorrhizae numbers in the lowest soil zone only. T. aestivum mycorrhizae can survive flood durations of at least 65 days. After flooding, mycorrhizae occur in higher numbers in the lowest soil zone, suggesting a mix of resilience and recovery. The results will aid in furthering our understanding of EcM but also may aid in conservation initiatives as well as providing insight for those whose livelihoods revolve around the collection of EcM fruiting bodies or cropping of the plant partners.


1982 ◽  
Vol 108 (10) ◽  
pp. 1208-1212
Author(s):  
John R. Crippen
Keyword(s):  

Huellas ◽  
2019 ◽  
Vol 23 (1) ◽  
pp. 11-26
Author(s):  
Volonte Antonela ◽  
◽  
Veronica Gil ◽  
◽  
◽  
...  
Keyword(s):  

In Extremis ◽  
2010 ◽  
pp. 90-102
Author(s):  
Paul Dostal ◽  
Florian Imbery ◽  
Katrin Bürger ◽  
Jochen Seidel

2017 ◽  
Vol 17 (11) ◽  
pp. 2053-2058 ◽  
Author(s):  
Diego Ravazzolo ◽  
Luca Mao ◽  
Bruno Mazzorana ◽  
Virginia Ruiz-Villanueva

Abstract. Large wood transported during extreme flood events can represent a relevant additional source of hazards that should be taken into account in mountain environments. However, direct observations and monitoring of large-wood transport during floods are difficult and scarce. Here we present a video of a flood characterised by multiple phases of large-wood transport, including an initial phase of wood-laden flow rarely described in the literature. Estimations of flow velocity and transported wood volume provide a good opportunity to develop models of large-wood-congested transport.


Water Policy ◽  
2015 ◽  
Vol 17 (S1) ◽  
pp. 133-155 ◽  
Author(s):  
Martin Grambow ◽  
Erich Eichenseer ◽  
Gregor Overhoff ◽  
Tobias Hafner ◽  
Kerstin Staton ◽  
...  

Flood protection is an integral part of society's development. Meeting a growing vulnerability in the context of geopolitical and global changes, existing systems of natural hazard management must be reviewed on a regular basis. This is illustrated well by Bavaria's recent history. The lessons from the big floods in the period of 1999–2013 led to a fundamental modification of Bavaria's integral flood protection strategy. The concepts of flood risk management, resilience and dealing with extreme flood events which exceed standard structural design limits came to the fore. Management of flash floods and other floods, handling of potential retention areas, the inclusion of insurance, resettlement, and the burden of maintenance are further challenges which are briefly addressed in this paper.


Land ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 139 ◽  
Author(s):  
Lisa C. Kelley ◽  
Agung Prabowo

Flooding is a routine occurrence throughout much of the monsoonal tropics. Despite well-developed repertoires of response, agrarian societies have been ‘double exposed’ to intensifying climate change and agro-industrialization over the past several decades, often in ways that alter both the regularity of flood events and individual and community capacity for response. This paper engages these tensions by exploring everyday experiences of and responses to extreme flood events in a case study village in Southeast Sulawesi, Indonesia, which has also been the site of corporate oil palm development since 2010. We first reconstruct histories of extreme flood events along the Konawe’eha River using oral histories and satellite imagery, describing the role of these events in straining the terms of daily production and reproduction. We then outline the ways smallholder agriculturalists are responding to flood events through alterations in their land use strategies, including through the sale or leasing of flood-prone lands, the relocation of riverine vegetable production to hillside locations, and adoption of new cropping choices and management practices. We highlight the role of such responses as a driver of ongoing land use change, potentially in ways that increase systemic vulnerability to floods moving forward.


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