What sets species range boundaries? How do population (e.g. abundance, recruitment) and individual (e.g. reproductive success) characteristics vary across entire species ranges? How do these features change in response to climate change? This work is tied to our efforts with two large interdisciplinary programs: the Partnership for Interdisciplinary Studies of Coastal Oceans (PISCO) and the Mellon Ecosystem Dynamics Consortium (MEDC). Current projects focus on the west coast of North America, the coast of Chile, and the coasts of South Africa.How do marine reserves affect marine ecosystems and fisheries? Are there design elements that enhance both conservation and fisheries management? Can networks of marine reserves be designed to help solve several fundamental challenges in fisheries biology such as the loss of old age classes, the evolution of small size and early maturity in response to fishing, and weak stock closures in mixed species fisheries, a multibillion dollar global economic problem? Much of this work has been the focus of my efforts as a Marine Conservation Fellow with the Pew Charitable Trusts and in the National Science Foundation's Biocomplexity program F3: Flow, Fish, and Fishing.