Ecological succession and fine sediment accretion influence local patch dynamics of a pioneer riparian species ( Typha minima Hoppe)

2021 ◽  
Author(s):  
Nadège Popoff ◽  
Renaud Jaunatre ◽  
Caroline Le Bouteiller ◽  
Margot Trinquier ◽  
Yoan Paillet ◽  
...  
Keyword(s):  
Patch Dynamics ◽  
Fine Sediment ◽  
Ecological Succession ◽  
Sediment Accretion ◽  
Riparian Species ◽  
Local Patch

scholarly journals The Influence of Temporal Migration in the Synchronization of Populations

2015 ◽  
Vol 16 (1) ◽  
pp. 31
Author(s):  
Vanderlei Manica ◽  
Jacques Aveline Loureiro da Silva
Keyword(s):  
Population Dynamics ◽  
Patch Dynamics ◽  
Metapopulation Model ◽  
Migration Process ◽  
Time Step ◽  
Analytical Criterion ◽  
Local Patch ◽  
And Migration ◽  
The Stability

A discrete metapopulation model with temporal dependent migration is proposed in order to study the stability of synchronized dynamics. During each time step, we assume that there are two processes involved in the population dynamics: local patch dynamics and migration process between the patches that compose the metapopulation. We obtain an analytical criterion that depends on the local patch dynamics (Lyapunov number) and on the whole migration process. The stability of synchronized dynamics depends on how individuals disperse among the patches.

scholarly journals A probabilistic approach to dispersal in spatially explicit meta-populations

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Rajat Karnatak ◽  
Sabine Wollrab
Keyword(s):  
Species Distribution ◽  
Land Use Changes ◽  
Probabilistic Approach ◽  
Patch Dynamics ◽  
Distribution Patterns ◽  
Species Dispersal ◽  
Probabilistic Network ◽  
Transient Nature ◽  
Local Patch ◽  
Patch Density

AbstractMeta-population and -community models have extended our understanding regarding the influence of habitat distribution, local patch dynamics, and dispersal on species distribution patterns. Currently, theoretical insights on spatial distribution patterns are limited by the dominant use of deterministic approaches for modeling species dispersal. In this work, we introduce a probabilistic, network-based framework to describe species dispersal by considering inter-patch connections as network-determined probabilistic events. We highlight important differences between a deterministic approach and our dispersal formalism. Exemplified for a meta-population, our results indicate that the proposed scheme provides a realistic relationship between dispersal rate and extinction thresholds. Furthermore, it enables us to investigate the influence of patch density on meta-population persistence and provides insight on the effects of probabilistic dispersal events on species persistence. Importantly, our formalism makes it possible to capture the transient nature of inter-patch connections, and can thereby provide short term predictions on species distribution, which might be highly relevant for projections on how climate and land use changes influence species distribution patterns.

Effect of Organic Materials on Bulk Density and Erodibility of Fine Sediment Beds

2005 ◽  
Author(s):  
Trimbak M. Parchure ◽  
Jack E. Davis
Keyword(s):  
Bulk Density ◽  
Organic Materials ◽  
Fine Sediment

An investigation of fine sediment mixing within free-flowing and surcharged manholes

1998 ◽  
Vol 37 (1) ◽  
pp. 215-222
Author(s):  
I. Guymer ◽  
R. O'Brien ◽  
O. Mark ◽  
P. Dennis
Keyword(s):  
Dead Zone ◽  
Laser Induced Fluorescence ◽  
Fine Sediment ◽  
Longitudinal Dispersion ◽  
Qualitative Description ◽  
Suspended Material ◽  
Mixing Processes ◽  
Future Developments ◽  
Mixing Effects ◽  
Sediment Mixing

Previous studies of the effects of manholes on longitudinal dispersion has concentrated on the spreading of solutes. This papers presents new data describing the influence of a surcharged and free-flowing manhole structure on the longitudinal dispersion of a fine suspended material. The effects of benching within the manhole structure are also illustrated. Laser Induced Fluorescence (LIF) techniques have been used to provide a qualitative description of the mixing processes present within a surcharged manhole. Nephelometric results have provided estimates of the parameters required to simulate the mixing effects using either increase in variance or aggregated dead zone techniques. A preliminary attempt at describing these observations using available software is discussed and recommendations for future developments are made.

Monitoring Fine Sediment; Grande Ronde and John Day Rivers, 1998 Annual Report.

10.2172/14089 ◽  
1999 ◽  
Author(s):  
Michael D Purser ◽  
Jonathan J Rhodes
Keyword(s):  
Annual Report ◽  
Fine Sediment ◽  
John Day

ELUCIDATING SEA-LEVEL RISE, SUBSIDENCE, AND SEDIMENT ACCRETION IN THE GANGES-BRAHMAPUTRA (G-B) TIDAL DELTAPLAIN

2016 ◽  
Author(s):  
Carol A. Wilson ◽  
◽  
Michael Steckler ◽  
Steven L. Goodbred ◽  
Richard Hale ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Sediment Accretion ◽  
The Ganges
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