Simulations of biological production in the Rhodes and Ionian basins of the eastern Mediterranean

2000-03-01
Napolitano, E
Oguz, T
Malanotte-Rizzoli, P
Yılmaz, Ayşen
Sansone, E
The biological production characteristics of the Rhodes and western Ionian basins of the eastern Mediterranean are studied by a one-dimensional, coupled physical-biological model. Tbe biological model involves single aggregated compartments of phytoplankton, zooplankton, detritus as well as ammonium and nitrate forms of the inorganic nitrogen. It interacts with the physical model through the vertical eddy diffusivity which is calculated using the Mellor-Yamada level 2.5 turbulence parameterization. The model simulations demonstrate the importance of the contrasting physical oceanographic characteristics of these two basins on affecting their yearly planktonic structures. The annual primary production in the Rhodes basin is estimated as similar to 97 g C m(2) yr(-1) which is comparable with the northwestern Mediterranean. The western Ionian basin, on the contrary, possesses only 10% of the Rhodes' productivity and therefore represent a most oligotrophic site in the eastern Mediterranean. The Rhodes basin reveals a strong bloom in early spring, typically in March, a weaker bloom in early winter, typically in January, and a subsurface production below the seasonal thermocline during summer. This structure is slightly modified in the western Ionian basin, and the early winter and early spring blooms are merged to cover the entire winter. These results are supported favorably by the available observations both in their magnitudes and timing.
JOURNAL OF MARINE SYSTEMS

Suggestions

ANALYSES OF ECOSYSTEM-PRIMARY PRODUCTION INTERACTIONS IN THE NORTHERN LEVANTINE BASIN
Yilmaz, Elif; Salihoğlu, Barış; Department of Oceanography (2016-10-12)
Three areas of different ecosystem characteristics in the Northern Levantine Basin is compared using a 1-D multicomponent lower trophic level ecosystem model developed by SALIHOĞLU, B. et al. (2009) (NAGEM). Main focus was to analyze and compare the carrying capacity (PP) and regulatory mechanisms of the nutrients on lower trophic levels. 26 years’ of historical data obtained from METU-IMS data inventory and CORIOLIS was used to form a climatology, to introduce boundary conditions to the model as well as to...
Vertical profiles of particulate organic matter and its relationship with chlorophyll-a in the upper layer of the NE Mediterranean Sea
EDİGER, DİLEK; Tugrul, S; Yılmaz, Ayşen (2005-04-01)
Particulate organic matter (POM), nutrients, chlorophyll-a (CHL) and primary production measurements were performed in the upper layer of three different regions (cyclonic, anticyclonic and frontal+peripherial) of the NE Mediterranean Sea in 1991-1994. Depth profiles of bulk POM exhibited a subsurface maximum, coinciding with the deep chlorophyll maximum (DCM) established near the base of the euphotic zone of the Rhodes cyclone and its periphery, where the nutricline was situated just below the euphotic zon...
Spatio-temporal variability of the size-fractionated primary production and chlorophyll in the Levantine Basin (northeastern Mediterranean)
Yucel, Nebil (Elsevier BV, 2018-7)
Spatial and temporal variations in size-fractionated primary production (PP) and chl a, in relation to ambient physicochemical parameters, were studied in the three distinct ecosystems of northeastern Levantine Basin namely eutrophic Mersin Bay, mesotrophic Rhodes Gyre, and oligotrophic offshore waters. These ecosystems were visited in July and September 2012 and March and May 2013. Total primary production (TPP) rates ranged between 0.22 and 17.8 mg C m(-3) h(-1) within the euphotic zone, whereas depth-int...
Examinations on technological characteristics of mudbased construction materials in Ulucak Hoyuk neolithic settlement
Erol, Fatıma; Tavukçuoğlu, Ayşe; Department of Archaeometry (2019)
The main concern of the study is the definition of mud-based materials technologies belonging to Ulucak Höyük (İzmir) Neolithic settlement (Vth level:6400-6000 BC and IVth level: 5990-5660 BC). Representative samples were collected from the eight different mud masonry houses that were unburnt, partially and fully burnt mudbricks, interior/exterior mud plasters, and floor covering mud mortars. Their laboratory tests were based on raw materials analyses composed of compositional properties of mud mixtures and...
Comparison of turbulence model and wall function couplings for simulating scour
Şentürk, Barış Ufuk; Baykal, Cüneyt; Department of Civil Engineering (2022-1-19)
In this study, the scouring of bed material at the rear side of a rubble mound coastal revetment due to the overtopping of solitary-like waves is numerically studied using a coupled hydrodynamic and morphological computational fluid dynamics model. The major purpose of this thesis study is to investigate the performances of different turbulence model and wall function couplings on the hydrodynamic and morphological results. In the first part of this study, hydrodynamic simulations are performed, and the res...
Citation Formats
E. Napolitano, T. Oguz, P. Malanotte-Rizzoli, A. Yılmaz, and E. Sansone, “Simulations of biological production in the Rhodes and Ionian basins of the eastern Mediterranean,” JOURNAL OF MARINE SYSTEMS, pp. 277–298, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62961.