Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Spatial distribution and structure of benthic polychaete communities in shallow waters of the south Caspian Sea, Iran
Rowshan, O.; Sakhaei, N.; Zolgharnein, Z.; Paknezhad, H.; Taheri, M. (2023). Spatial distribution and structure of benthic polychaete communities in shallow waters of the south Caspian Sea, Iran. Iran. J. Fish. Sci. 22(1): 44-65. https://dx.doi.org/10.22092/ijfs.2023.128618
In: Iranian Journal of Fisheries Sciences. Iranian Fisheries Research Organization: Tehran. ISSN 1562-2916; e-ISSN 2322-5696
|   |
| Trefwoorden |
Capitella capitata (Fabricius, 1780) [WoRMS]; Streblospio gynobranchiata Rice & Levin, 1998 [WoRMS]
Marien/Kust |
| Author keywords |
Capitella capitata, Community diversity, Environmental parameters, Sediment analysis, Streblospio gynobranchiata |
| Auteurs | | Top |
- Rowshan, O.
- Sakhaei, N.
- Zolgharnein, Z.
|
|
|
| Abstract |
Polychaetes are the most abundant taxon in benthic communities. The polychaete assemblages on the Iranian Caspian Sea coast were studied during the summer of 2016 and winter of 2017 to examine the spatial-temporal variability in diversity and community structure, as well as their relationships with the main environmental variables. As a representative of the study area, fifteen stations at 1, 3, and 5 m depths were chosen. Capitella capitata was reported for the first time in the Caspian Sea. Four species were found: Streblospio gynobranchiata, Alitta succinea, Hypania invalida, and Capitella capitata. The eastern transect (Gorgan Bay) had the highest total abundance of polychaetes (15146 ind.m2) with increasing in the abundance of S. gynobranchiata. Furthermore, S. gynobranchiata appears to be well-distributed in this sea and plays the most prominent role in the community structure. A. succinea, S. gynobranchiata, and C. capitata showed an increasing trend from the western to the eastern parts of the shoreline. Changes in polychaetes abundance can be attributed to changes in the sediment type, with western transects containing more sand and eastern transects comprising silt-loam. Total polychaete abundance was correlated with salinity, water temperature, depth, dissolved oxygen, Total Organic Matter and sediment characteristics in the summer and winter seasons, according to the Canonical correlation analysis. S. gynobranchiata and C. capitata, as invasive species, may have altered the current polychaete community distribution, structure, and diversity in the southeast Caspian Sea. The disappearance of some species and the decrease in species richness could be due to the success of S. gynobranchiata in the competition for resources and space. Other conditions such as environmental factors and pollutants can also affect the presence of sensitive and tolerant organisms. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
