Temporal changes in allele frequencies in a small marble trout Salmo marmoratus population threatened by extreme flood events

2016 ◽  
Vol 88 (3) ◽  
pp. 1175-1190 ◽  
Author(s):  
J. M. Pujolar ◽  
S. Vincenzi ◽  
L. Zane ◽  
A. J. Crivelli
Keyword(s):  
Temporal Changes ◽  
Allele Frequencies ◽  
Flood Events ◽  
Marble Trout ◽  
Extreme Flood ◽  
Salmo Marmoratus

scholarly journals Ectomycorrhiza resilience and recovery to extreme flood events in Tuber aestivum and Quercus robur

Mycorrhiza ◽  
2021 ◽  
Author(s):  
P. W. Thomas
Keyword(s):  
Climate Change ◽  
Seedling Growth ◽  
Quercus Robur ◽  
Root Systems ◽  
Fruiting Bodies ◽  
Flood Events ◽  
Tuber Aestivum ◽  
Soil Zone ◽  
Extreme Flood ◽  
The Impact

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.

scholarly journals Testing temporal changes in allele frequencies: a simulation approach

2010 ◽  
Vol 92 (4) ◽  
pp. 309-320 ◽  
Author(s):  
EDSON SANDOVAL-CASTELLANOS
Keyword(s):  
Molecular Data ◽  
Temporal Changes ◽  
Allele Frequencies ◽  
Small Populations ◽  
Simulation Approach ◽  
Simulation Test ◽  
Agent Based ◽  
Binomial Sampling ◽  
Molecular Databases ◽  
Parameter Values

SummaryAnalysis of the temporal variation in allele frequencies is useful for studying microevolutionary processes. However, many statistical methods routinely used to test temporal changes in allele frequencies fail to establish a proper hypothesis or have theoretical or practical limitations. Here, a Bayesian statistical test is proposed in which the distribution of the distances among sampling frequencies is approached with computer simulations, and hypergeometric sampling is considered instead of binomial sampling. To validate the test and compare its performance with other tests, agent-based model simulations were run for a variety of scenarios, and two real molecular databases were analysed. The results showed that the simulation test (ST) maintained the significance value used (α=0·05) for a vast combination of parameter values, whereas other tests were sensitive to the effect of genetic drift or binomial sampling. The differences between binomial and hypergeometric sampling were more complex than expected, and a novel effect was described. This study suggests that the ST is especially useful for studies with small populations and many alleles, as in microsatellite or sequencing molecular data.

Envelope Curves for Extreme Flood Events

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

Metastatic osteoblastic osteosarcoma of the jaw in a marble trout ( Salmo marmoratus )

2020 ◽  
Author(s):  
Rubina Sirri ◽  
Ranieri Verin ◽  
Alberto Perolo ◽  
Fernando Lunelli ◽  
Filippo Faccenda ◽  
...  
Keyword(s):  
Marble Trout ◽  
Osteoblastic Osteosarcoma ◽  
Salmo Marmoratus

scholarly journals Contributions of historical hydrogeomorphology to determine floodable areas from extreme flood events

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

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):  
Flood Events ◽  
Extreme Flood

Regional Determination of Historical Heavy Rain for Reconstruction of Extreme Flood Events

In Extremis ◽  
2010 ◽  
pp. 90-102
Author(s):  
Paul Dostal ◽  
Florian Imbery ◽  
Katrin Bürger ◽  
Jochen Seidel
Keyword(s):  
Heavy Rain ◽  
Flood Events ◽  
Extreme Flood ◽  
Regional Determination

scholarly journals Brief communication: The curious case of the large wood-laden flow event in the Pocuro stream (Chile)

2017 ◽  
Vol 17 (11) ◽  
pp. 2053-2058 ◽  
Author(s):  
Diego Ravazzolo ◽  
Luca Mao ◽  
Bruno Mazzorana ◽  
Virginia Ruiz-Villanueva
Keyword(s):  
Initial Phase ◽  
Large Wood ◽  
Flood Events ◽  
Additional Source ◽  
Good Opportunity ◽  
Mountain Environments ◽  
Direct Observations ◽  
Extreme Flood ◽  
Large Wood Transport ◽  
Wood Transport

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.

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