Epipelic diatom spatial and temporal distribution and relationship with the main environmental parameters in coastal waters

2007 ◽  
Vol 75 (1-2) ◽  
pp. 35-49 ◽  
Author(s):  
C. Facca ◽  
A. Sfriso
Keyword(s):  
Coastal Waters ◽  
Temporal Distribution ◽  
Environmental Parameters ◽  
Spatial And Temporal Distribution

Spatial and Temporal Distribution of the Vibrionaceae in Coastal Waters of Hawaii, Australia, and France

2007 ◽  
Vol 54 (2) ◽  
pp. 314-323 ◽  
Author(s):  
B. W. Jones ◽  
A. Maruyama ◽  
C. C. Ouverney ◽  
M. K. Nishiguchi
Keyword(s):  
Coastal Waters ◽  
Temporal Distribution ◽  
Spatial And Temporal Distribution

scholarly journals Understanding the Spatial and Temporal Distribution and Environmental Characteristics of Polychaete Assemblages in the Coastal Waters of Ulleungdo, East Sea of Korea

2021 ◽  
Vol 9 (11) ◽  
pp. 1310
Author(s):  
Sang-Lyeol Kim ◽  
Ok-Hwan Yu
Keyword(s):  
Coastal Waters ◽  
Dominant Species ◽  
Environmental Changes ◽  
Temporal Distribution ◽  
Average Density ◽  
East Sea ◽  
Sediment Type ◽  
Spatial And Temporal Distribution ◽  
Factors Affecting ◽  
Study Results

The coastal area of Ulleungdo in the East Sea has experienced large climate and environmental changes. However, research on marine benthic animals in this area has been very limited. In the present study, we investigated the spatial and temporal distribution of benthic polychaetes to determine their seasonal adaptability to environmental changes in the coastal waters of Ulleungdo in 2019. In total, 116 species (34 families) of polychaetes were identified with an average of 25 species per site. The average density was 772.8 individuals m−2, with the highest density in August and the lowest in February. The dominant species were Pseudobranchiomma zebuensis (15.6%), Scolelepis sp. (8.6%), Haplosyllis spongiphila (7.3%), and Lumbrineris nipponica (6.3%). The main factors affecting polychaete community structure were water depth and sediment type (gravel, sand, silt, clay). Based on cluster analysis, the polychaetes tended to group mainly in winter and summer with P. zebuensis and Syllis sp. contributing to the grouping. The dominant species was the suspension feeder, which correlated highly with habitat sediment type and was substantially consistent with the coast of Dokdo. Some species overlapped in the East Sea coast, but the number and diversity of species were higher in Ulleungdo. Our study results confirm the ecological characteristics of benthic polychaetes of Ulleungdo and provide information for future monitoring of the environmental and biological changes in the East Sea.

scholarly journals Spatial and temporal distribution of larvae and juveniles of Hoplias aff. malabaricus (Characiformes, Erythrinidae) in the Upper Paraná River floodplain, Brazil

2002 ◽  
Vol 62 (2) ◽  
pp. 211-222 ◽  
Author(s):  
A. BIALETZKI ◽  
K. NAKATANI ◽  
P. V. SANCHES ◽  
G. BAUMGARTNER
Keyword(s):  
Electrical Conductivity ◽  
Dissolved Oxygen ◽  
Temporal Distribution ◽  
Environmental Parameters ◽  
Spatial And Temporal Distribution ◽  
River Floodplain ◽  
River Level ◽  
Larvae And Juveniles ◽  
Upper Paraná River Floodplain ◽  
Upper Paraná River

Spatial and temporal distribution of larvae and juveniles of trahira, Hoplias aff. malabaricus (Erythrinidae), and their relationship with environmental parameters in the Upper Paraná River floodplain were analyzed. Sampling of larvae and juveniles of H. aff. malabaricus has been conducted during the period from November 1991 through February 1995, with 42 sampling stations distributed in four sub-areas: Ivinhema I, Ivinhema II, Baía, and Paraná. During the same period, data were obtained for water temperature, dissolved oxygen, pH, electrical conductivity, river level, precipitation index, and photoperiod. The largest catches of larvae were in the Ivinhema I sub-area (47.06%), and of juveniles in the Paraná sub-area (54.55%). Larvae and juveniles were caught from October to February. Larvae were mainly collected at night and in all types of environments sampled (lotic, semi-lotic, and lentic). Principal Component Analysis of the environmental parameters and larval density showed that the largest catches were obtained in dry season months, with low values for temperature, electrical conductivity, river level, and photoperiod, and with high concentrations of dissolved oxygen and pH. This reproductive strategy may minimizes predation and maximizes food utilization, as it enables the fish to reach advanced developmental stages, while most other species are spawning.

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