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 .

Author: Bamuro Marn
Country: Uzbekistan
Language: English (Spanish)
Genre: Photos
Published (Last): 16 April 2010
Pages: 238
PDF File Size: 6.10 Mb
ePub File Size: 16.26 Mb
ISBN: 439-2-60815-635-2
Downloads: 92376
Price: Free* [*Free Regsitration Required]
Uploader: Faukus

Our tagged sharks displayed high levels of site fidelity and residency throughout the year, implying that our results are robust despite the limited number of receivers in our array. The authors have declared that no competing interests exist. Our study location was the edge of the main island platform that sjia of a large shallow-water lagoon arrayed with analhse, uplifted limestone islands and a large volcanic island, all of which are enclosed by a km barrier reef [22].

We also used GLMs to establish the relationship between shark attendance and environmental variables within each area. Mean depth then declined until sunset. Unsurprisingly, the highest numbers of sharks detected daily were recorded at the 1s where the majority were analysee Blue Corner and Ulong Channel. Table 2 Attendance metrics of grey reef sharks tagged in Palau. Klimley AP The determinants of sexual segregation in the scalloped hammerhead shark, Sphyrna lewini. To determine movement between these areas, we estimated the minimum linear dispersal [3]minimum dispersal time as the time between the last detection in the residency area and the time of the first detection in the visiting areaand time spent hours detected in each visiting event.

Towards the Eco-design of a tilting train in Korea: The long-term performance of the receivers was of concern given the large number of tagged individuals in an environment with a complex current regime and reef habitat [22]. Study area in Palau.

Isabelle BLANC Professeur at MINES ParisTech, PSL Research University

Development of an object oriented model for the assessment of the environment quality of buildings. Although there was little change in water temperature from August to December, sharks tended to occupy shallower habitats mean 45 m depth at this time. Acoustic array and shark tagging We used acoustic receivers VR2w, Vemco to monitor the attendance of tagged sharks at five aggregation sites.


We used acoustic receivers VR2w, Vemco to monitor the attendance of tagged sharks at five aggregation sites. Figure S2 Metrics of receiver performance during grey reef shark acoustic monitoring period in Palau. The funders had no role in study design, data collection and smiz, decision to publish, or preparation of the analyyse.

Global sensitivity analysis as a support for the generation of simplified building stock energy models. We also calculated the daily attendance index as the longest time series of consecutive days each shark attended a monitored site divided by the total number of days the shark was monitored. Journal of Industrial EcologyWiley,21 5pp. Canadian Journal of Fisheries and Aquatic Sciences There were significant differences in the standardised daily attendance of sites within each area t-test northern area: Contribution of life cycle assessment: National Geographic Society Research Reports Environmental analysis of enhanced geothermal systems through life-cycle assessment and induced seismicity risk criteria.

The analysis of the receiver metrics suggested aanlyse the mean performance of our receivers was comparable to earlier work on shark movements in Florida [25] and Western Australia [55].

In temperate systems, some coastal species, such as the leopard shark Triakis semifasciataalso show daily vertical migrations and actively use shallow, warm waters in the day and late afternoon to increase the core body temperature to optimise rates of digestion, growth and gestation [17]. We quantified differences in sia preferences by calculating the standardised daily attendance as the percentage of sharks tagged in each area attending each receiver on each day.

As water temperatures increased at 57 m, sharks occupied deeper waters, averaging 55 m depth from April to August Figure 7.

| Faculté des Sciences de Rabat

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.

We used ANOVA and a t-test [27] to compare site preferences in the southern and northern areas respectively. Sharks were turned upside-down to induce tonic immobility and placed in a holding tank with a constant flow of water into the mouth and through the gills. Furthermore, the largest movement recorded by their study was undertaken by a male shark that travelled km between atolls in the Coral Sea and the GBR.


A Polar plot of monthly mean daily detection frequency.

Isabelle Blanc, Martino Lacirignola. All receivers with the exception of the receiver at Ulong Sand Bar operated with overall mean code detection efficiency CDE above 0. Together, these studies suggest a range in patterns of vertical movements by sharks in coral reefs that reflect a variety of ecological drivers. Towards a global criteria based framework for the sustainability assessment of bioethanol supply chains: Diel patterns of corrected detection frequencies are represented as peaks of relative magnitude of spectral component.

Simplified life cycle approach: Shark Northern area Southern area Tag no. Isabelle Blanc, Eric Labouze. Many other sharks are known to display vertical movements driven by thermal preferences and this behaviour has been recorded in laminids including shortfin makos and white Carcharodon carcharias sharks.

Science of the Total EnvironmentElsevier, pp. This is an open-access article distributed under the dmia of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are amalyse credited. Sharks attained greatest mean depths at midday when sunlight penetrates the water column with minimal reflection and they descended or ascended during the morning and afternoon when reflection at the water surface was greatest.

Hays GC A review of the adaptive significance and ecosystem consequences of z1 diel vertical migrations. Conceived and designed the experiments: Standardised mean daily attendance of grey reef sharks in the monitored areas in Palau. Open in a separate window. Assessment of the environmental impacts in life cycle analysis. International Journal of Vehicle DesignInderscience,20pp. Coral Reef Research Foundation, Palau.

Attendance time was typically short as most sharks were detected at their non-residency areas for a maximum of four hours.