نتایج جستجو برای: dynamic settlement

تعداد نتایج: 422330  

2002
Tilmann Harder Cindy Lam Pei-Yuan Qian

Larval settlement in the fouling polychaete Hydroides elegans Haswell (1883) is mediated by natural biofilms, a complex consortium of marine bacteria, benthic diatoms, protozoa, fungi and adsorbed organic matter. Currently, the inductive effect of natural biofilms on larval settlement is attributed to the bacterial component. In this paper, we present results of an investigation of the diatom c...

2013
Ashlee Lillis David B. Eggleston DelWayne R. Bohnenstiehl

Following a planktonic dispersal period of days to months, the larvae of benthic marine organisms must locate suitable seafloor habitat in which to settle and metamorphose. For animals that are sessile or sedentary as adults, settlement onto substrates that are adequate for survival and reproduction is particularly critical, yet represents a challenge since patchily distributed settlement sites...

Journal: :Ecology 2011
Kyle F Edwards John J Stachowicz

For sessile organisms, dispersal and recruitment are typically spatially stochastic, but there is little understanding of how this variability scales up to influence processes such as competitive coexistence. Here we argue that coexistence of benthic marine animals is enhanced by stochastic differences between species in the spatial distribution of larval settlement. Differentiation of settleme...

Journal: :international journal of civil engineering 0
t.h. kim taejong-ro, yeongdo-gu, busan 606-791, korea s.h. you director, geotechnical research & development co., ltd., korea

the ground improvement using plastic board drain (pbd) in soft soil was undertaken by sand mat formation, pbd installation, preloading surcharge, and removal of surcharge. during this procedure, the sand mat formation induced an initial settlement. however, it was very difficult to estimate that settlement due to pbd installation, which frequently destroyed the instruments installed in the grou...

2009
Jonathan N. Blythe Jesús Pineda

Metamorphosis from a pelagic to a benthic stage is a critical transition in the life cycle of sessile marine invertebrates. The barnacle Semibalanus balanoides attaches permanently during settlement, and once attached, its gross location in the adult habitat is fixed. The partitioning of benthic habitat among barnacles in a recruit cohort is often mediated by settlement timing because early set...

2012
Steve Whalan Nicole S. Webster Andrew P. Negri

In sessile marine invertebrates, larval settlement is fundamental to population maintenance and persistence. Cues contributing to the settlement choices and metamorphosis of larvae have important implications for the success of individuals and populations, but cues mediating larval settlement for many marine invertebrates are largely unknown. This study assessed larval settlement in two common ...

2016
Ashlee Lillis DelWayne Bohnenstiehl Jason W. Peters David Eggleston

Coral populations, and the productive reef ecosystems they support, rely on successful recruitment of reef-building species, beginning with settlement of dispersing larvae into habitat favourable to survival. Many substrate cues have been identified as contributors to coral larval habitat selection; however, the potential for ambient acoustic cues to influence coral settlement responses is unkn...

2014
Jun Feng Xi-yong Wu

Based on the method of BP neural network,a foundation settlement of BP neural network prediction model was established for a railway subgrade in HeFei area China. In the model, the previous field monitoring data was used as the training sample and the later settlement was predicted. The model was used for four test sections of the railway subgrade. The results showed that for the four test sect...

پایان نامه :موسسه آموزش عالی غیر دولتی و غیرانتفاعی علامه محدث نوری (ره) - پژوهشکده اقتصاد 1393

dynamic assessment according to vygotskys sociocultural theory, states that instruction and assessment are interrelated. using static forms of assessment with second and foreign language students could do more harm than good. many teachers neglect to take account of the complexity involved in learning a second or foreign language and often wonder why learning of a language take so long. thi...

2014
Toby Davies Hannah Fry Alan Wilson Alessio Palmisano Mark Altaweel Karen Radner

We present a spatial interaction entropy maximizing and structural dynamics model of settlements from the Middle Bronze Age (MBA) and Iron Ages (IA) in the Khabur Triangle (KT) region within Syria. The model addresses factors that make locations attractive for trade and settlement, affecting settlement growth and change. We explore why some sites become relatively major settlements, while other...

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