Biology, fisheries and culture of tropical groupers and snappers

Groupers and snappers are important fishery resources of the tropics and subtropics, where their high values have caused most of their stocks to be heavily exploited, some even to the point of collapse. Trends towards heavy demand and decreasing natural supply, which are accelerating in several parts of the world, prompted various mariculture ventures. Focused research on biology and the population dynamics of groupers and snappers, and on their reproduction and growth under controlled condition will remain essential for dealing with the questions on how to better manage their fisheries. This volume of papers presents important scientific findings and views on these two important groups of fish.Percoid fisheries, Fishery biology, Fishery management, Conferences

Lithium in field Am and normal A-F-type stars

Preliminary abundances of lithium and a few other elements have been obtained for 31 field Am stars with good Hipparcos parallaxes, as well as for 36 normal A and F stars. Radial and projected rotational velocities were determined as well. We examine the Li abundance as a function of the stellar parameters: for normal stars, it is clearly bimodal for Teff < 7500 K, while Am-Fm stars are all somewhat Li-deficient in this range. The most Li-deficient stars - either Am or normal - tend to be at least slightly evolved, but the reverse is not true.Comment: 4 pages, 2 figures, poster presented at the conference "Element stratification in stars, 40 years of atomic diffusion", eds. G. Alecian, O. Richard and S. Vauclair, EAS Publication Series, in pres

The Chambo restoration strategic plan

The Chambo (Oreochromis karongae, O. squamipinnis and O. lidole) fisheries are essential to the food security of the majority of Malawians and a lifeline for rural and urban economies. The chambo fisheries, however, have collapsed and urgent restoration is required. Successful restoration of the important chambo fisheries demands a careful analysis of the problem and formulation of a strategic plan to implement relevant activities that will result in effective interventions in the fisheries. These proceedings give information on the process of developing a strategic plan for the restoration of the chambo fisheries. The papers contained in these proceedings cover topics ranging from governance, policy, biology, ecology and socio-economics and, therefore, inform the reader of the scope of knowledge on the chambo, the socio-economic and livelihoods context within which the people exploiting the resource operate, and past constraints to the management of the chambo fisheries. The proceedings also contain recommendations on how to overcome the problems and a strategic plan for the restoration of the fisheries. It is hoped that the proceedings will emphasize to researchers in the natural and social sciences and development practitioners that a multidisciplinary approach is needed that puts the people utilizing the resource at the center of all activities involved if the chambo fisheries are to be successfully restoredFisheries, Fish culture, Fishery management, Resource conservation, Resource management, Malawi, Oreochromis karongae, Oreochromis squamipinnis, Oreochromis lidole

You Want Me to Reach Them All by When? How?

Blended Individualized Learning combines the best of online learning with traditional teaching. Presenters will share step-by-step how we designed an easy to follow K–5 school-wide blended learning model to engage and empower students through the use of playlists and “leveling up.” Participants will also have access to view the daily implementation manual, classroom videos, and sample playlists created by teachers. These best practices led our Title I inner-city school from an F (23 percent) to a C School while cutting our teacher turnover rate in half and changed the school’s image in the community for the better

Expanding the Circle: Essays in Honor of Joan E. Hemenway

Reviewed by Sandee Yarlott

Preferential attachment of communities: the same principle, but a higher level

The graph of communities is a network emerging above the level of individual nodes in the hierarchical organisation of a complex system. In this graph the nodes correspond to communities (highly interconnected subgraphs, also called modules or clusters), and the links refer to members shared by two communities. Our analysis indicates that the development of this modular structure is driven by preferential attachment, in complete analogy with the growth of the underlying network of nodes. We study how the links between communities are born in a growing co-authorship network, and introduce a simple model for the dynamics of overlapping communities.Comment: 7 pages, 3 figure