Effects of environmental factors on reef fish assemblage structure in the southeastern U.S. Atlantic

2021 ◽  
Author(s):  
DM Glasgow ◽  
MJM Reichert ◽  
J Quattro
Keyword(s):  
Environmental Factors ◽  
Reef Fish ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Fish Assemblage Structure ◽  
Reef Fish Assemblage

scholarly journals Rocky reef fish assemblage structure in coastal islands of Southern Brazil

2015 ◽  
Vol 2 ◽  
Author(s):  
Daros Felippe ◽  
Bueno Leonardo ◽  
Soeth Marcelo ◽  
Bertoncini Athila ◽  
Hostim-Silva Mauricio ◽  
...  
Keyword(s):  
Reef Fish ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Rocky Reef ◽  
Fish Assemblage Structure ◽  
Southern Brazil ◽  
Reef Fish Assemblage ◽  
Rocky Reef Fish

scholarly journals Rocky reef fish assemblage structure in coastal islands of southern Brazil

2018 ◽  
Vol 46 (1) ◽  
pp. 197-211 ◽  
Author(s):  
Felippe Daros ◽  
Leonardo Bueno ◽  
Marcelo Soeth ◽  
Athila Bertoncini ◽  
Mauricio Hostim ◽  
...  
Keyword(s):  
Reef Fish ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Rocky Reef ◽  
Fish Assemblage Structure ◽  
Southern Brazil ◽  
Reef Fish Assemblage ◽  
Rocky Reef Fish

Assessing reef fish assemblage structure: how do different stereo-video techniques compare?

2010 ◽  
Vol 157 (6) ◽  
pp. 1237-1250 ◽  
Author(s):  
Dianne L. Watson ◽  
Euan S. Harvey ◽  
Ben M. Fitzpatrick ◽  
Timothy J. Langlois ◽  
George Shedrawi
Keyword(s):  
Reef Fish ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Fish Assemblage Structure ◽  
Reef Fish Assemblage ◽  
Stereo Video

scholarly journals Cross and long-shore variations in reef fish assemblage structure and implications for biodiversity management

2019 ◽  
Vol 218 ◽  
pp. 246-257 ◽  
Author(s):  
Lydia L. Bach ◽  
Benjamin J. Saunders ◽  
Stephen J. Newman ◽  
Thomas H. Holmes ◽  
Euan S. Harvey
Keyword(s):  
Reef Fish ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Fish Assemblage Structure ◽  
Biodiversity Management ◽  
Reef Fish Assemblage

scholarly journals The influence of depth on the Mediterranean reef fish assemblage revealed by the new video on underwater scooter method

2020 ◽  
Vol 61 (2) ◽  
pp. 145-162
Author(s):  
Igor Glavičić ◽  
Marcelo Kovačić ◽  
Dejan Paliska ◽  
Dani Laslo
Keyword(s):  
Reef Fish ◽  
Fish Assemblage ◽  
Environmental Variables ◽  
Fish Assemblages ◽  
Average Density ◽  
Depth Range ◽  
Fish Assemblage Structure ◽  
Visual Census ◽  
Reef Fish Assemblage ◽  
Significant Difference

The new video on underwater scooter method in combination with rebreather diving techniques was introduced and applied for visual census of fish assemblages. The presently applied method facilitates deeper visual census studies below 40 m, where they have rarely been done before due to the increasing research challenges with depth. The video on underwater scooter method is also expected to be less disturbing and faster compared to swimming divers. The method was applied in visual census study of fish assemblages from 8 to 50 m depth conducted at two locations in the east Adriatic using 102 video transects. The environmental variables contributing to the variation of the reef fish community in the depth range of the infralittoral and upper circalittoral bottoms were also recorded. Thirty-one fish species were recorded on transects and 10.3% of all individuals were not identified to the species level. The average density on transects was 0.8 individuals/m², with C. chromis, C. julis and G. auratus being both the most abundant and the most frequent species. Three environmental variables, depth, bottom with zoocover and eastern orientation of the coast, were identified as highly significant for species occurrence. Abundance and species richness of fish assemblages showed no significant variation with depths, inclinations, orientations and sites. A significant difference in the fish assemblage structure was found among orientations, depths and inclinations with the gradient change of species composition with increasing depth and with increasing inclination.

In situ effects of human disturbances on coral reef-fish assemblage structure: temporary and persisting changes are reflected as a result of intensive tourism

2015 ◽  
Vol 66 (1) ◽  
pp. 23 ◽  
Author(s):  
Tiago Albuquerque ◽  
Miguel Loiola ◽  
José de Anchieta C. C. Nunes ◽  
José Amorim Reis-Filho ◽  
Cláudio L. S. Sampaio ◽  
...  
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Fish Assemblage Structure ◽  
Short Term ◽  
Human Disturbances ◽  
Behavioural Changes

Non-lethal human disturbances are often drivers of change in animal population and community structure. To gauge their severity, short-term behaviour (e.g. avoidance and habituation) has been argued to be a sensitive measure. However, many of these behavioural changes may occur only if disturbance-free habitat is readily accessible. In coral-reef fish, we tested whether human disturbances from intensive (i.e. loud music, swimming, snorkelling, splashing and fish feeding by numerous visitors) tourist visitations resulted in assemblage structure shifts led by short-term behaviour. We monitored fish assemblage before, during and after tourist visitations to monitor changes associated with behaviour. Additionally, we monitored two adjacent reefs not visited by tourists because of difficult approach by boat. We posited that if short-term benefits of relocating to disturbance-free habitat outweigh the costs of tolerating disturbances, fish assemblage structure should shift along with tourist visitation levels. By contrast, if sensitive species are unable or unwilling to relocate, we predicted greater levels of assemblage heterogeneity between the visited and control reefs. Our results showed that in situ human visitations led to significant shifts in assemblage structure, resulting from short-term behavioural changes. Additionally, we showed significant between-reefs differences, whereby control reefs were characterised by higher species richness, larger fish sizes and variations in relative trophic guild prevalence. Our results suggest that short-term relocations to adjacent disturbance-free reefs may not mitigate the effects of human disturbances.

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