Santos Perez has crafted a timely collection of eco-poetry that explores his ancestry as a native Pacific Islander, the ecological plight of his homeland, and his fears for the future. The book begins with the birth of the author's daughter, capturing her growth and childlike awe at the wonders of nature. As it progresses, Perez confronts the impacts of environmental injustice, the ravages of global capitalism, toxic waste, animal extinction, water rights, human violence, mass migration, and climate change. Throughout, he mourns lost habitats and species, and confronts his fears for the future world his daughter will inherit. Amid meditations on calamity, this work does not stop at the threshold of elegy. Instead, the poet envisions a sustainable future in which our ethics are shaped by the indigenous belief that the earth is sacred and all beings are interconnected--a future in which we cultivate love and "carry each other towards the horizon of care."

Through experimental forms, free verse, prose, haiku, sonnets, satire, and a method he calls "recycling," Perez has created a diverse collection filled with passion. Habitat Threshold invites us to reflect on the damage done to our world and to look forward, with urgency and imagination, to the possibility of a better future.