The link between anthropogenic nutrient loads and the magnitude and extent of diatom and Phaeocystis colony blooms in the Southern Bight of the North Sea was explored with the complex ecosystem model MIRO. The model was adapted for resolving the changing nutrient loads, the complex biology of the bloom species and the tight coupling between the benthic and pelagic compartments that characterise this shallow coastal shelf sea ecosystem. State variables included the main inorganic nutrients (nitrate [NO3], ammonium [NH4], phosphate [PO4] and dissolved silica [DSi]), 3 groups of phytoplankton with different trophic fates (diatoms, nanophytoflagellates and Phaeocystis colonies), 2 zooplankton groups (copepods and microzooplankton), bacteria, and 5 classes of detrital organic matter with different biodegradability. The capability of the MIRO model to properly simulate the observed SW–NE gradient in nutrient enrichment and the seasonal cycle of inorganic and organic C and nutrients, phytoplankton, bacteria and zooplankton in the eastern English Channel and Southern Bight of the North Sea is demonstrated by running the model for the period from 1989 to 1999. The MIRO code was implemented in a simplified multi-box representation of the hydrodynamic regime. These model runs give the first general view of the seasonal dynamics of Phaeocystis colony blooms and nutrient cycling within the domain. C, N and P budget calculations show that (1) the coastal ecosystem has a low nutrient retention and elimination capacity, (2) trophic efficiency of the planktonic system is low, and (3) both are modulated by meteorological forcing.
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A description is given of the violence related pathologies that are observed in a number of wild mammals that were buried in the predynastic cemetery HK6 at Hierakonpolis, Upper Egypt. Unlike other predynastic graveyards, where only domestic cattle, sheep, goat and dogs are interred, the elite cemetery HK6 yielded also a wide variety of wild species that were buried as part of extensive mortuary complexes surrounding the graves of the highest local elite. The animals were interred, singly or in groups, often in graves of their own, but some also accompany human burials. Pathologies were found on the skeletons of 20 of the 38 wild animals discovered thus far, namely in 15 anubis baboons (Papio anubis), one leopard (Panthera pardus), one jungle cat (Felis chaus), one hartebeest (Alcelaphus buselaphus), one aurochs (Bos primigenius) and one hippo (Hippopotamus amphibius). Most of the pathologies are healed fractures resulting from violent blows, and a smaller proportion seems to be related to tethering. These conditions indicate that the animals were held in captivity for a prolonged period of time after their capture. The type and frequency of the encountered deformations differ from those seen in wild animals from other, more recent Egyptian cemeteries (Abydos, Tuna el-Gebel, Gabanet el-Giroud, Saqqara) where mainly metabolic disorders are observed that have been attributed to chronic malnutrition and to vitamin D deficiency as a result of inadequate housing in a dark environment. Keywords: archaeozoology - palaeopathology - bone fracture - hartebeest - aurochs - baboon - leopard - jungle cat.
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