Special Issue on Large-scale Dynamics of Coral Reef Systems

Coral Reefs ◽  
2000 ◽  
Vol 19 (2) ◽  
pp. 194-194
Author(s):  
Not Available Not Available
Keyword(s):  
2020 ◽  
Vol 1 ◽  
pp. 1961-1964
Author(s):  
Sami Muhaidat ◽  
Paschalis C. Sofotasios ◽  
Kaibin Huang ◽  
Muhammad Ali Imran ◽  
Zhiguo Ding ◽  
...  

Author(s):  
Joseph J. Webber ◽  
Herbert E. Huppert

AbstractMotivated by shallow ocean waves propagating over coral reefs, we investigate the drift velocities due to surface wave motion in an effectively inviscid fluid that overlies a saturated porous bed of finite depth. Previous work in this area either neglects the large-scale flow between layers (Phillips in Flow and reactions in permeable rocks, Cambridge University Press, Cambridge, 1991) or only considers the drift above the porous layer (Monismith in Ann Rev Fluid Mech 39:37–55, 2007). Overcoming these limitations, we propose a model where flow is described by a velocity potential above the porous layer and by Darcy’s law in the porous bed, with derived matching conditions at the interface between the two layers. Both a horizontal and a novel vertical drift effect arise from the damping of the porous bed, which requires the use of a complex wavenumber k. This is in contrast to the purely horizontal second-order drift first derived by Stokes (Trans Camb Philos Soc 8:441–455, 1847) when working with solely a pure fluid layer. Our work provides a physical model for coral reefs in shallow seas, where fluid drift both above and within the reef is vitally important for maintaining a healthy reef ecosystem (Koehl et al. In: Proceedings of the 8th International Coral Reef Symposium, vol 2, pp 1087–1092, 1997; Monismith in Ann Rev Fluid Mech 39:37–55, 2007). We compare our model with field measurements by Koehl and Hadfield (J Mar Syst 49:75–88, 2004) and also explain the vertical drift effects as documented by Koehl et al. (Mar Ecol Prog Ser 335:1–18, 2007), who measured the exchange between a coral reef layer and the (relatively shallow) sea above.


Author(s):  
Cory F. Newman ◽  
Robert P. Reiser ◽  
Derek L. Milne

AbstractContributors to this Special Issue of the Cognitive Behaviour Therapist have considered the kind of infrastructure that should be in place to best support and guide CBT supervisors, providing practical advice and extensive procedural guidance. Here we briefly summarize and discuss in turn the 10 papers within this Special Issue, including suggestions for further enhancements. The first paper, by Milne and Reiser, conceptualized this infrastructure in terms of an ‘SOS’ (supporting our supervisors) framework, from identifying supervision competencies, to training, evaluation and feedback strategies. The next nine papers illustrate this framework with specific technical innovations, educational enhancements and procedural issues, or through comprehensive quality improvement systems, all designed to support supervisors. These papers suggest an assortment of workable infrastructure developments: two large-scale and comprehensive initiatives, some promising proposals and technologies, and a series of local, exploratory work. Collectively, they provide us with models for further developing evidence-based cognitive-behavioural supervision, and offer practical suggestions for giving supervisors the tools and support to maximize their supervisees’ learning, and to improve the associated client outcomes. Much research and development work remains to be done, and successful implementation will require institutional and political support, as well as cross-cultural adaptations. We conclude with an optimistic assessment of progress toward addressing some of the infrastructure improvements required to adequately support supervisors.


2018 ◽  
Vol 604 ◽  
pp. 211-222 ◽  
Author(s):  
KR Jones ◽  
JM Maina ◽  
S Kark ◽  
TR McClanahan ◽  
CJ Klein ◽  
...  

2021 ◽  
Vol 29 ◽  
pp. 121
Author(s):  
Oren Pizmony-Levy ◽  
Dafna Gan

The aim of this special issue, “Learning Assessments for Sustainability?”, is to examine the interaction between the environmental and sustainability education (ESE) movement and the international large-scale assessments (ILSAs) movement. Both global educational movements emerged in the 1960s and their simultaneous work have affected each other since then. While the articles in this special issue highlight the potential benefits of ILSAs as a source of data for secondary analysis, they also demonstrate the limitations of ILSAs and their negative consequences to ESE. As such, we call for more research on the interaction between ESE and ILSAs and for a serious consideration of how test-based accountability practices might work against meaningful engagement with ESE. This introductory article includes three sections. The first section provides context about the movements. The second section presents an overview of the articles and alternative ways for reading them. The third section discusses lessons learned from the collection of articles. We conclude with a call for further research and reflection.


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