One year after Dom Phillips was killed in the Brazilian Amazon, friends and colleagues have come together in a show of journalistic solidarity to keep his legacy alive and finish the book the British journalist was working on at the time of his death.

Phillips and his Brazilian companion, the Indigenous expert Bruno Pereira, were killed while returning from the remote Javari valley in the western Amazon last June. Three men have been charged with murder and are being held in high-security prisons while awaiting a decision on whether they will face trial.

Phillips, a respected correspondent and longtime Guardian collaborator, had been working on a book called How to Save the Amazon: Ask the People Who Know. His fatal expedition last year to interview Indigenous defenders fighting criminal activity in the Javari valley was to have been one of his final reporting trips.

In a tribute to the deep admiration Phillips elicited as both a person and journalist, his friends and colleagues are now striving to ensure that his work telling the stories of Amazon defenders does not die with him.