scholarly journals Feeding of Paracalanus parvus (Claus, 1863) Order Calanoida (Copepoda) in the Coastal Waters of Baniyas (Eastern Mediterranean)

Author(s):  
Kamal Al-Hanoun ◽  
Wassim Mayya
2010 ◽  
Vol 11 (2) ◽  
pp. 353 ◽  
Author(s):  
G. IOANNOU ◽  
N. MICHAILIDIS ◽  
A. LOUCAIDES ◽  
I. MANITARAS

The first occurrence of the Indo-Pacific blue-barred parrotfish (Scarus ghobban) in the coastal waters of Cyprus is reported. The finding corroborates the establishment of this Lessepsian immigrant along the Levantine coasts.


2016 ◽  
Vol 67 (10) ◽  
pp. 1445 ◽  
Author(s):  
Amira Rekik ◽  
Jannet Elloumi ◽  
Dorra Chaari ◽  
Habib Ayadi

The environmental parameters, microphytoplankton and ciliate communities in the area were studied in spring and autumn at 20 stations along the coast south of Sfax over two seasons during 2011. The results showed that the environmental parameters indicated high nutrient levels and their concentrations ranges reported as criteria of eutrophication in coastal waters. A total of 78 microphytoplankton species were identified, belonging to Diatoms, Dinoflagellates, Cyanobacteriae, Euglenophyceae, Dictyochophyceae and Chlorophyceae. The numerical density of phytoplankton was high over the whole area, with season averages between 44.10×102 ±41.93×102 and 103.55×102 ± 107.33×102 cells L–1. A total of 58 ciliate species were identified at all of the stations. Tintinnids abundance was generally higher than naked ciliate abundance reported for autumn and spring seasons, both at the surface layer and water–sediment interface. One striking point was that ciliate abundance was unchanged in autumn (4×102 cells L–1) but was still higher in spring (6×102 cells L–1). Some species reported in this study are commonly found in the stressed coastal waters.


Ekoloji ◽  
2008 ◽  
Vol 17 (68) ◽  
pp. 17-23 ◽  
Author(s):  
Neslihan Dogan Saglamtimur ◽  
Suleyman Tugrul

2013 ◽  
Vol 10 (5) ◽  
pp. 3349-3357 ◽  
Author(s):  
S. Efrati ◽  
Y. Lehahn ◽  
E. Rahav ◽  
N. Kress ◽  
B. Herut ◽  
...  

Abstract. A combined dataset of near-real-time multi-satellite observations and in situ measurements from a high-resolution survey is used for characterizing physical-biogeochemical properties of a patch stretching from the coast to the open sea in the Levantine Basin (LB) of the eastern Mediterranean (EM). Spatial analysis of the combined dataset indicates that the patch is a semi-enclosed system, bounded within the mixed layer and separated from ambient waters by transport barriers induced by horizontal stirring. As such, the patch is characterized by physical-biogeochemical properties that significantly differ from those of the waters surrounding it, with lower salinity and higher temperatures, concentrations of silicic acid and chlorophyll a, and abundance of Synechococcus and picoeukaryote cells. Based on estimates of patch dimensions (∼40 km width and ∼25 m depth) and propagation speed (∼0.09 m s−1), the volume flux associated with the patch is found to be on the order of 0.1 Sv. Our observations suggest that horizontal stirring by surface currents is likely to have an important impact on the ultra-oligotrophic Levantine Basin ecosystem, through (1) transport of nutrients and coastally derived material, and (2) formation of local, dynamically isolated niches. In addition, this work provides a satellite-based framework for planning and executing high-resolution sampling strategies in the interface between the coast and the open sea.


1996 ◽  
Vol 42 (1) ◽  
pp. 103-115 ◽  
Author(s):  
Thomas S. Bianchi ◽  
Andreas Demetropoulos ◽  
Myroula Hadjichristophorou ◽  
Marina Argyrou ◽  
M. Baskaran ◽  
...  

Biologia ◽  
2010 ◽  
Vol 65 (2) ◽  
Author(s):  
George Kehayias ◽  
Dimitris Kourouvakalis

AbstractThis study investigates the diel vertical distribution and the diet of the most important chaetognath species found in the 0–50 m surface layer of a coastal area in the eastern Mediterranean during a 24-hour period in July 2004. Among the recorded chaetognaths, Sagitta enflata was the most abundant species (41.6%), followed by S. minima (32.5%) and S. serratodentata (20.8%). Those three species exhibited a “twilight migration” pattern, with only small differences among them. Vertical separation was found between S. enflata and S. minima. Both species preyed mainly on cladocerans, although copepods were the most abundant group in the zooplankton assemblage. The chaetognath species followed partially the diel vertical migration of their prey. S. enflata showed high feeding intensity at different times in both day and night, while S. minima fed more intensively at midday (12:00) and at dusk (20:00), and S. serratodentata in the morning (08:00). It seems that in order to coexist in an area of low productivity the chaetognath species follow the basic ecological rules of space, time and food-type separation, in order to reduce the inter- and intra-specific competition. The high preference of S. minima and especially of S. enflata for the cladocerans made them probably the most important predators of cladocerans during summer.


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