We modified the stable isotope mixing model MixSIR to infer primary producer contributions to consumer diets based on their fatty acid composition. To parameterize the algorithm, we generated a 'consumer-resource library' of FA signatures of Daphnia fed different algal diets, using 34 feeding trials representing diverse phytoplankton lineages. This library corresponds to the resource or produce...

Penelitian ini mendeskripsikan tentang pola kebijakan KPID Wilayah Riau dalam mengawasi digitalisasi penyiaran. Di saat regulasi kita belum siap dengan segala bentuk kebebasan perstersebut, juga dipaksa untuk menghadapi era dan konvergensi yang memerlukan lebih tepat lugas. Meskipun di banyak sisi, masih memiliki kekurangan kurang konsisten Undang-Undang pendahulunya. Tinjauan pustaka ketersedi...

During the late Initial Period (c. 1100-800 BC), Conchucos region of highland Peru witnessed formation ceremonial and “proto-urban” center Chavín de Huántar 1000-500/400 BC). An important question regarding centers on nature its subsistence economy during time when it was first founded. In this paper, we present new results from zooarchaeological, starch granule, stable isotope (δ 13 C δ 15 N) ...

How different functional responses of consumers exploiting pulsed resources affect community dynamics is an ongoing question in ecology. Tree masting is a common resource pulse in terrestrial ecosystems that can drive rodent population cycles. Using stable isotope (δ(13)C, δ(15)N) analyses, we investigated the dietary response of two fluctuating rodent species, the yellow-necked mouse Apodemus ...

BACKGROUND Understanding dietary trends for endangered species may be essential to assessing the effects of ecological disturbances such as habitat modification, species introductions or global climate change. Documenting temporal variation in prey selection may also be crucial for understanding population dynamics. However, the rarity, secretive behaviours and obscure microhabitats of some end...

OBJECTIVES To estimate, using Bayesian evidence synthesis, the age-group-specific annual incidence of symptomatic infection with seasonal influenza in the Netherlands over the period 2005-2007. METHODS The Netherlands population and age group distribution for 2006 defined the base population. The number of influenza-like illness (ILI) cases was estimated from sentinel surveillance data and ad...

The study of ecological niche segregation in sympatric species is essential to understand ecosystem functioning and its response potential changes. In the North Sea, grey harbour seals may present competition for food resources sustained by intense fishing activities recent increase seal populations. order coexist reduce inter-specific competition, must segregate at least one aspect their niche...

The metal concentrations and isotopic compositions (13C, 207/206Pb) of urban dust, topsoil, PM10 samples were analyzed in a residential area near Donghae port, Korea, which is surrounded by various types industrial factories raw material stockpiled on empty land, to determine the contributions main pollution sources (i.e., Mn ore, Zn cement, coal, coke, topsoil). dust port approximately 85~112 ...

The interactions among diet, ecology, physiology, and biochemistry affect N and C stable isotope signatures in animal tissues. Here, we examined if ecological segregation among animals in relation to sex and age existed by analyzing the signatures of δ(15)N and δ(13)C in the muscle of Western Mediterranean striped dolphins. Moreover, we used a Bayesian mixing model to study diet composition and...

Empirical patterns that emerge from an examination of food webs over gradients of environmental variation can help to predict the implications of anthropogenic disturbance on ecosystems. This "dynamic food web approach" is rarely applied at the coastal margin where aquatic and terrestrial systems are coupled and human development activities are often concentrated. We propose a simple model of g...