Habitat model forecasts suggest potential redistribution of marine predators in the southern Indian Ocean

作者：Ryan R Reisinger, Stuart Corney, Ben Raymond, Amanda T. Lombard, Marthán N Bester, Robert J. M. Crawford, Delia Davies, P J Nico de Bruyn, Ben J. Dilley, Stephen P. Kirkman, Azwianewi B. Makhado, Peter G. Ryan, Stefan Schoombie, Kim L. Stevens, Cheryl Ann Tosh, Mia Wege, Thomas Otto Whitehead, Michael Sumner, Simon Wotherspoon, Ari S. Friedlaender, Cédric Cotté, Mark A. Hindell, Yan Ropert‐Coudert, Pierre Pistorius · 发表于：Diversity and Distributions · 年份：2021 · DOI：10.1111/ddi.13447 · 被引用次数：34 · 研究领域：Species Distribution and Climate Change、Marine and fisheries research、Isotope Analysis in Ecology

Abstract Aim Climate change will likely lead to a significant redistribution of biodiversity in marine ecosystems. We examine the potential redistribution of a community of marine predators by comparing current and future habitat distribution projections. We examine relative changes among species, indicative of potential future community‐level changes and consider potential consequences of these changes for conservation and management. Location Southern Indian Ocean. Methods We used tracking data from 14 species (10 seabirds, 3 seals and 1 cetacean, totalling 538 tracks) to model the habitat selection of predators around the Prince Edward Islands. Using random forest classifiers, we modelled habitat selection as a response to a static environmental covariate and nine dynamic environmental covariates obtained from eight IPCC‐class climate models. To project the potential distribution of the predators in 2071–2100, we used climate model outputs assuming two greenhouse gas emission scenarios: RCP 4.5 and RCP 8.5. Results Analogous climates are projected to predominantly shift to the southeast and southwest. Species’ potential range shifts varied in direction and magnitude, but overall shifted slightly to the southwest. Despite the variable shifts among species, current species co‐occurrence patterns and future projections were statistically similar. Our projections show that at least some important habitats will shift out of national waters and marine protected areas by 2100, bu...