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Observations of a novel behavioural tactic employed by egg-eating male Telmatherina sarasinorum are described. Four T. sarasinorum males were observed actively courting females of closely related Telmatherina antoniae, enticing the female to spawn, and then eating the eggs. The possible evolutionary implications of sneaky egg-eating behaviour are discussed.(More)
Building trust between resource users and natural resource institutions is essential when creating conservation policies that rely on stakeholders to be effective. Trust can enable the public and agencies to engage in cooperative behaviors toward shared goals and address shared problems. Despite the increasing attention that trust has received recently in(More)
H ave you ever asked your students the following questions: Why do we need oxygen? How does it get into our cells? How do ecosystems maintain their balance? What are the roles of different organ-isms? All of these questions focus on systems thinking and are useful in helping to push students to think below the surface. Systems thinking is so important that(More)
!! Understanding complex systems is a difficult but important component of scientific literacy (Sabelli, 2006). !! SBF is a conceptual representation for reasoning about multiple complex systems. !! Two lenses for studying transfer-Actor-oriented approach: traces trajectories adopted by the learner to see similarities between two situations (Lobato, 2006).(More)
To reason about complex natural systems, learners need opportunities to develop and represent their ideas about how these systems operate. In our work, we use an explicit conceptual representation – the Structure-Behavior-Function (SBF) ontology (Goel et al., 1996; Hmelo-Silver et al., 2007; Goel et al. 2009) – to help middle school students model and(More)
Citizen science has generated a growing interest among scientists and community groups, and citizen science programs have been created specifically for conservation. We examined collaborative science, a highly interactive form of citizen science, which we developed within a theoretically informed framework. In this essay, we focused on 2 aspects of our(More)
Learning about ecosystems is challenging because, like any complex system, they are simultaneously multidimensional and dynamic. Often, learners engage only with the visible components of an ecosystem and draw either single or linear causal connections between components. In this study, we explored how using a Structure-Behavior-Function framework supported(More)
This paper explores how the RepTools toolkit was appropriated in two different classroom cultures. The RepTools toolkit consists of hypermedia about a complex system, physical models, and NetLogo simulations, designed to help students understand complex systems in the context of aquarium ecosystem. This paper reports on the nature of the different(More)