Identification and Mapping of Bottom Fish Assemblages in Northern Baffin Bay

2011 ◽  
Vol 43 ◽  
pp. 65-79 ◽  
Author(s):  
O A Jorgensen ◽  
C Hvingel ◽  
M A Treble
Keyword(s):  
Fish Assemblages ◽  
Baffin Bay ◽  
Bottom Fish

Identification and mapping of bottom fish assemblages in Davis Strait and southern Baffin Bay

2005 ◽  
Vol 62 (8) ◽  
pp. 1833-1852 ◽  
Author(s):  
O A Jørgensen ◽  
C Hvingel ◽  
P R Møller ◽  
M A Treble
Keyword(s):  
Fish Assemblages ◽  
Fish Fauna ◽  
Multinomial Logit Model ◽  
The Arctic ◽  
Arctic Seas ◽  
Standard Type ◽  
Baffin Bay ◽  
The North ◽  
Davis Strait ◽  
Bottom Fish

The bathymetry of Baffin Bay, with shallow sills both to the north and south, creates a relatively isolated body of deep polar water, unique among the Arctic Seas. During 263 trawl hauls completed during October 1999 and September to November 2001, 116 fish species were collected in Davis Strait and the southern Baffin Bay (61°44.1′ N–73°52.8′ N, depths of 145–1484 m). The abundance data for the 80 benthic species were used for analyses of the fish fauna diversity and fish assemblages. As a first step, seven assemblages were found by a standard type of cluster analysis. A Bayesian multinomial logit model was then applied to calculate vectors of probabilities defining the likelihood of each haul belonging to each of the seven clusters. The spatial distribution of the conditional probabilities for each cluster (assemblage) was mapped by means of a geostatistical tool. Each assemblage was further defined by indicator species, depth, and temperature. Four of the assemblages were found in Baffin Bay, two in Davis Strait and one mainly in Davis Strait but scattered into Baffin Bay.

scholarly journals Bottom Fish Assemblages at the Shelf and Continental Slope off East Greenland

2015 ◽  
Vol 47 ◽  
pp. 37-55 ◽  
Author(s):  
O A Jorgensen ◽  
C Hvingel ◽  
P R Moller
Keyword(s):  
Continental Slope ◽  
Fish Assemblages ◽  
East Greenland ◽  
Bottom Fish

scholarly journals Linking spatial pattern of bottom fish assemblages with water masses in the North Sea

2009 ◽  
Vol 18 (1) ◽  
pp. 36-50 ◽  
Author(s):  
SIEGFRIED EHRICH ◽  
VANESSA STELZENMÜLLER ◽  
SARA ADLERSTEIN
Keyword(s):  
Spatial Pattern ◽  
North Sea ◽  
Fish Assemblages ◽  
Water Masses ◽  
The North ◽  
Bottom Fish ◽  
The North Sea

scholarly journals Nondestructive Monitoring of Soft Bottom Fish and Habitats Using a Standardized, Remote and Unbaited 360° Video Sampling Method

Fishes ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 50
Author(s):  
Delphine Mallet ◽  
Marion Olivry ◽  
Sophia Ighiouer ◽  
Michel Kulbicki ◽  
Laurent Wantiez
Keyword(s):  
Coral Reef ◽  
Sampling Method ◽  
Fish Assemblages ◽  
New Caledonia ◽  
Nondestructive Monitoring ◽  
Soft Bottom ◽  
Total Species Richness ◽  
Key Species ◽  
Bottom Fish ◽  
Soft Bottoms

Lagoon soft-bottoms are key habitats within coral reef seascapes. Coral reef fish use these habitats as nurseries, feeding grounds and transit areas. At present, most soft-bottom sampling methods are destructive (trawling, longlining, hook and line). We developed a remote, unbaited 360° video sampling method (RUV360) to monitor fish species assemblages in soft bottoms. A low-cost, high-definition camera enclosed in a waterproof housing and fixed on a tripod was set on the sea floor in New Caledonia from a boat. Then, 534 videos were recorded to assess the efficiency of the RUV360. The technique was successful in sampling bare soft-bottoms, seagrass beds, macroalgae meadows and mixed soft-bottoms. It is easy to use and particularly efficient, i.e., 88% of the stations were sampled successfully. We observed 10,007 fish belonging to 172 species, including 45 species targeted by fishermen in New Caledonia, as well as many key species. The results are consistent with the known characteristics of the lagoon soft bottom fish assemblages of New Caledonia. We provide future users with general recommendations and reference plots to estimate the proportion of the theoretical total species richness sampled, according to the number of stations or the duration of the footage.

Seagrass meadows shape fish assemblages across estuarine seascapes

2018 ◽  
Vol 588 ◽  
pp. 179-189 ◽  
Author(s):  
BL Gilby ◽  
AD Olds ◽  
RM Connolly ◽  
PS Maxwell ◽  
CJ Henderson ◽  
...  
Keyword(s):  
Fish Assemblages ◽  
Seagrass Meadows

Deep-sea fish assemblages (300-2100 m) in the eastern Pacific off northern Mexico

2018 ◽  
Vol 592 ◽  
pp. 225-242 ◽  
Author(s):  
E Cruz-Acevedo ◽  
N Tolimieri ◽  
H Aguirre-Villaseñor
Keyword(s):  
Deep Sea ◽  
Fish Assemblages ◽  
Eastern Pacific ◽  
Northern Mexico ◽  
Sea Fish

Spatial assemblage structure of shallow-water reef fish in Southwest Australia

2020 ◽  
Vol 649 ◽  
pp. 125-140
Author(s):  
DS Goldsworthy ◽  
BJ Saunders ◽  
JRC Parker ◽  
ES Harvey
Keyword(s):  
Shallow Water ◽  
Reef Fish ◽  
Marine Environment ◽  
Fish Assemblages ◽  
Canopy Cover ◽  
Reef Fishes ◽  
Reef Fish Assemblage ◽  
Reef Type ◽  
Present Distribution ◽  
Southwest Australia

Bioregional categorisation of the Australian marine environment is essential to conserve and manage entire ecosystems, including the biota and associated habitats. It is important that these regions are optimally positioned to effectively plan for the protection of distinct assemblages. Recent climatic variation and changes to the marine environment in Southwest Australia (SWA) have resulted in shifts in species ranges and changes to the composition of marine assemblages. The goal of this study was to determine if the current bioregionalisation of SWA accurately represents the present distribution of shallow-water reef fishes across 2000 km of its subtropical and temperate coastline. Data was collected in 2015 using diver-operated underwater stereo-video surveys from 7 regions between Port Gregory (north of Geraldton) to the east of Esperance. This study indicated that (1) the shallow-water reef fish of SWA formed 4 distinct assemblages along the coast: one Midwestern, one Central and 2 Southern Assemblages; (2) differences between these fish assemblages were primarily driven by sea surface temperature, Ecklonia radiata cover, non-E. radiata (canopy) cover, understorey algae cover, reef type and reef height; and (3) each of the 4 assemblages were characterised by a high number of short-range Australian and Western Australian endemic species. The findings from this study suggest that 4, rather than the existing 3 bioregions would more effectively capture the shallow-water reef fish assemblage patterns, with boundaries having shifted southwards likely associated with ocean warming.

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