UNIVERSITE HASSAN II DE CASABLANCA. FACULTE DES SCIENCES. AIN CHOCK. ANNEE UNIVERSITAIRE: / SEMESTRE: S1. FILIERE: SMIA . Liste provisoire des inscrits dans la Filière SMIA (semestre S1) A et B VAL I VAL I I I I I VAL Analyse I I I I I I I I I I I I I I I I I I I I I I I I I I I I I VAL I I I I I I I I I I I Algèbre . PLANNING SEANCES D’EXAMEN DE TRAVAUX PRATIQUES. Etudiants SVT- S1. MODULE M2 Histologie– EmbryologieSVT-S1. Etudiants SVT-S1. TP Virtuels .
|Published (Last):||1 July 2008|
|PDF File Size:||15.45 Mb|
|ePub File Size:||15.6 Mb|
|Price:||Free* [*Free Regsitration Required]|
Alternatively, or possibly in addition, the increase in depth shown by grey reef sharks may be an anti-predator response where sharks seek to avoid the conditions of increased light nearer the surface that may aid the hunting abilities of larger sharks, both of their own and other species.
Isabelle BLANC Professeur at MINES ParisTech, PSL Research University
In pelagic systems, such reciprocal patterns in distribution of predator and prey species are very common, with cyclical variation in luminosity of the moon driving changes in the depth distribution of mesoplankton at night which in turn influences the depth distribution of their predators . Towards Prospective Life Cycle Assessment: Overall, there was a tendency for the sharks to use shallower waters during the night Figure 7.
High and low tide phases were defined as one hour prior to and following the slack tide . We considered sharks as inter-annual residents when an animal had an annual residency index equal or higher than 0. The GLM analysis indicated that a combination of daily and tidal factors influenced the pattern of reef attendance by sharks Table 4with more individuals attending the monitored sites during the daytime Figure 5 and at low tide.
Here, we describe spatial and temporal patterns in the vertical movements and residency of the grey reef shark, one of the most common and abundant sharks on coral reefs across the Indo-Pacific.
Depths of sharks at night increased from 40 m during the new moon, to 60 m on the full moon Figure 7. Of these, 17 sharks were tagged in the northern area and 22 in the southern area.
Assessing the prospective environmental impacts of photovoltaic anakyse based on a simplified LCA model. This tagging procedure typically required less than ten minutes from the moment the shark was caught to the moment it was released. Strong site fidelity of juveniles anzlyse nursery areas is evident in lemon Negaprion brevirostrisblacktip and Caribbean reef sharks and is thought to be due to the advantages of nurseries in terms of predator avoidance and food availability .
All receivers with anxlyse exception of the receiver at Ulong Sand Bar operated with overall mean code detection efficiency CDE above 0. L T indicates total length of individual. Analysis of building inertia using a modal description. Our results are consistent with those of Field et al.
Hight BV, Lowe CG Elevated body temperatures of adult female leopard sharks, Triakis semifasciata, while aggregating in shallow nearshore embayments: LCA of emerging technologies: Grey reef sharks in Palau displayed high levels of inter-annual residency, with tagged sharks detected at the same sites along the outer reef slopes for over two years. Hays GC A review of the adaptive significance and ecosystem consequences of zooplankton diel vertical migrations.
We also used GLMs to establish the relationship between shark attendance and environmental variables within each area. Journal of Industrial EcologyWiley,21 5pp. In summary, our study provides the first long-term view of the vertical movements of grey reef sharks within a coral reef environment. Evaluation of Environmental Accounting Methodologies for the assessment of global environmental impacts of traded goods and services.
Maximum Log Likelihood, df: How to calculate the environmental ss1 of renewable energy. While reef isolation may account for the greater degree of site fidelity of sharks at remote atolls, this does not explain the high degree of site fidelity of grey reef sharks in Palau where sites occurred on a continuous barrier reef that stretched more than km.
Blocks were then joined in a random order to create the uncorrelated bootstrapped sample .
CV HAL : Isabelle BLANC Professeur at MINES ParisTech, PSL Research University
For this model, water temperature and moon phase were used as explanatory variables. International Building Performance Simulation Association, pp. At Osprey Reef and in Palau where sharks have analse high degree of site fidelity, aggregations of grey reef sharks are almost exclusively composed of females  Meekan et al.
The receivers were distributed over a linear distance of approximately 6 km in the northern area and 5 km in the southern area Figure 1. Contrastingly, the mean depth of sharks during the day did not differ with lunar phase, remaining between 45—50 m Table 5. Drebszok, Daniel Stetter, Richard Kranenburg, et al. xnalyse
Fate and exposure to organic compounds emitted indoors. Improvement of regional sustainability: Some coastal sharks also display evidence of lunar influences on depth distributions. Author information Article notes Copyright and License information Disclaimer. We also found significant differences in the mean daily detection frequencies per month for all sharks Table 3indicating that although sharks visited the monitored areas regularly through the year, there was a degree of seasonality, with a higher detection frequencies recorded mainly during summer June to September and lower detection frequencies in winter and spring January to April Figure 4.
| Faculté des Sciences de Rabat
Adult site fidelity is argued to be advantageous for a number of reasons, including mating, feeding, pupping and resting . Once caught, sharks were brought alongside the boat and restrained within a canvas stretcher, which was then lifted onboard. Accessed March 3. Our results confirm previous suggestions that grey reef sharks display strong levels of site fidelity that persist across years, at least for some components of the population.
Environmental impact assessment of electricity smla by photovoltaic system using GEOSS recommendations on interoperability.
An opposite pattern occurred in the afternoon with sharks gradually ascending analyxe dusk. The transformation shows the diel periodicity of detection frequencies of a female grey reef shark no.
Camille Marini, Isabelle Blanc. Global sensitivity analysis in LCA of emerging technologies: Similarly, there is evidence that whale sharks Rhincodon typus spend long periods analgse up their bodies in the surface after long deep divers in cold waters .
Two of the tagged sharks were not detected by the array and one individual was detected for only seven days; data for these sharks were not included in analyses. A Mean analyxe depth of grey reef sharks in Palau and mean monthly water temperature at 57 metres B Mean depth of sharks in a given moon phase C Detection frequencies of sharks throughout the water column during the day and night.