Benthic community recovery from small-scale damage on marginal Caribbean reefs: an example from Panama

2013 ◽  
Keyword(s):  
Benthic Community ◽  
Small Scale ◽  
Community Recovery ◽  
Small Scale Damage

scholarly journals Effectiveness of artificial floods for benthic community recovery after sediment flushing from a dam

2019 ◽  
Vol 191 (2) ◽  
Author(s):  
Alberto Doretto ◽  
Tiziano Bo ◽  
Francesca Bona ◽  
Mattia Apostolo ◽  
Davide Bonetto ◽  
...  
Keyword(s):  
Benthic Community ◽  
Community Recovery ◽  
Sediment Flushing

Long-term divergent tidal flat benthic community recovery following hypoxia-induced mortality

2010 ◽  
Vol 60 (2) ◽  
pp. 178-186 ◽  
Author(s):  
C. Van Colen ◽  
F. Montserrat ◽  
M. Vincx ◽  
P.M.J. Herman ◽  
T. Ysebaert ◽  
...  
Keyword(s):  
Tidal Flat ◽  
Benthic Community ◽  
Community Recovery

scholarly journals Local variations in microhabitat use by Stegastes fuscus (Cuvier, 1830) (Teleostei: Pomacentridae) in a tropical reef of Brazil

2016 ◽  
Vol 3 (6) ◽  
pp. 375-384 ◽  
Author(s):  
Paulo Roberto de Medeiros ◽  
Ana Luisa Pires Moreira ◽  
Ana Maria Alves de Medeiros
Keyword(s):  
Benthic Community ◽  
Behavioral Plasticity ◽  
Local Variation ◽  
Small Scale ◽  
Microhabitat Use ◽  
Survey Techniques ◽  
Palythoa Caribaeorum ◽  
Tropical Reef ◽  
Microhabitat Preferences ◽  
First Time

Due to their widespread abundance and territorial habits, damselfishes play central roles in reefs worldwide, but the extent to which they modify the reef's substrate varies both amongst and within species. The present study evaluated microhabitat preferences and the role of the common damselfish Stegastes fuscus (Cuvier, 1830) (Teleostei: Pomacentridae) as a benthic community modifier in a tropical algal-dominated reef. We employed video survey techniques to assess fish density and microhabitat use and, additionally, the biomass of sessile components were compared inside and immediately outside algal farms of S. fuscus. Individuals showed pronounced microhabitat preference, but with prominent local (i.e. small-scale) variations in benthic cover. These local variations are reported for the first time and were due to individuals defending one of two contrasting microhabitats (i.e. turf-dominated or Palythoa caribaeorum-dominated). Further, significant differences in the biomass of sessile organisms were observed within algal farms suggesting that S. fuscus plays a keystone role in the benthic community of the reef. The implications of the prominent local variation in microhabitat use are discussed and strongly illustrate the behavioral plasticity of this damselfish.

Vibration-Based Detection of Small-Scale Damage on a Bridge Deck

2007 ◽  
Vol 133 (9) ◽  
pp. 1257-1267 ◽  
Author(s):  
Zhengjie Zhou ◽  
Leon D. Wegner ◽  
Bruce F. Sparling
Keyword(s):  
Bridge Deck ◽  
Small Scale ◽  
Small Scale Damage

scholarly journals Benthic community recovery from brine impact after the implementation of mitigation measures

2015 ◽  
Vol 70 ◽  
pp. 325-336 ◽  
Author(s):  
Yoana Del-Pilar-Ruso ◽  
Elena Martinez-Garcia ◽  
Francisca Giménez-Casalduero ◽  
Angel Loya-Fernández ◽  
Luis Miguel Ferrero-Vicente ◽  
...  
Keyword(s):  
Benthic Community ◽  
Mitigation Measures ◽  
Community Recovery

Hypoxia and benthic community recovery in Korean coastal waters

2006 ◽  
Vol 52 (11) ◽  
pp. 1517-1526 ◽  
Author(s):  
Hyun-Sig Lim ◽  
Robert J. Diaz ◽  
Jae-Sang Hong ◽  
Linda C. Schaffner
Keyword(s):  
Coastal Waters ◽  
Benthic Community ◽  
Community Recovery

Strength of silicon containing nanoscale flaws

2004 ◽  
Vol 19 (2) ◽  
pp. 657-660 ◽  
Author(s):  
Antonia Pajares ◽  
Marina Chumakov ◽  
Brian R. Lawn
Keyword(s):  
Silicate Glass ◽  
Test Procedure ◽  
Local Stress ◽  
Silicon Surfaces ◽  
Small Scale ◽  
Stress Concentrations ◽  
Subthreshold Region ◽  
Fundamental Nature ◽  
Glass Surfaces ◽  
Small Scale Damage

Silicon is a principal material in submicrometer-scale devices. Components in such devices are subject to intense local stress concentrations from nanoscale contacts during function. Questions arise as to the fundamental nature and extent of any strength-degrading damage incurred at such contacts on otherwise pristine surfaces. Here, a simple bilayer test procedure is adapted to probe the strengths of selected areas of silicon surfaces after nanoindentation with a Berkovich diamond. Analogous tests on silicate glass surfaces are used as a control. The strengths increase with diminishing contact penetration in both materials, even below thresholds for visible cracking at the impression corners. However, the strength levels in the subthreshold region are much lower in the silicon, indicating exceptionally high brittleness and vulnerability to small-scale damage in this material. The results have important implications in the design of devices with silicon components.

scholarly journals Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis

2003 ◽  
Vol 83 (4) ◽  
pp. 719-729 ◽  
Author(s):  
Filipe Alves ◽  
Luís Chícharo ◽  
António Nogueira ◽  
João Regala
Keyword(s):  
Community Structure ◽  
Benthic Community ◽  
Multivariate Analyses ◽  
Small Scale ◽  
Benthic Community Structure ◽  
Short Term ◽  
Predatory Behaviour ◽  
Scuba Divers ◽  
Seasonal Analysis ◽  
South Portugal

Patterns in community structure of meiofauna and macrofauna in relation to Portuguese clam dredging were compared during a 2-y-period off Lagos and Vilamoura, south Portugal. SCUBA divers randomly sampled corer and quadrat samples before and immediately after simulating commercial dredge fishery. Univariate measures (abundance, number of taxa, evenness, diversity and biomass) and multivariate analyses (Cluster, MDS and SIMPER) revealed changes in the meio- and macro-benthic community structure caused by dredge disturbance (short-term effects), with a general decrease in all measures. Macrofauna were found to be more sensitive to dredge disturbance, and aggressive predatory behaviour was observed after disturbance in the continuously dredged area. Nevertheless, higher significant natural changes were found between seasonal periods, indicating that dredging may only cause a small-scale and short-term impact.

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