His research expertise includes beach-dune geomorphology and sedimentary processes and assessing the signals and coastal impacts of climate variability and sea-level rise. Dr. Walker lead a multi-disciplinary team of researchers in a CCIAP-funded study of the environmental and community vulnerabilities on one of Canada's most sensitive coastlines to sea-level rise - NE Graham Island, Haida Gwaii (Queen Charlotte Islands), BC. Professor Walker also works closely with Parks Canada to monitor beach-dune dynamics and coastal erosion in Gwaii Haanas National Park Reserve and Haida Heritage Site, Gulf Islands National Park, and PEI National Park.