Natureza & Conservação Natureza & Conservação
Nat Con 2016;14:74-82 DOI: 10.1016/j.ncon.2016.10.002
Research Letters
Prioritizing rare tree species of the Cerrado-Amazon ecotone: warnings and insights emerging from a comprehensive transitional zone of South America
Everton A. Maciela,b, Ary T. Oliveira-Filhoc, Pedro V. Eisenlohrb,,
a Postgraduate Program in Ecology and Conservation, Universidade do Estado de Mato Grosso, Nova Xavantina, MT, Brazil
b Laboratory of Ecology, Universidade do Estado de Mato Grosso, Alta Floresta, MT, Brazil
c Department of Botany, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
Received 28 May 2016, Accepted 13 October 2016
Abstract

Many locally and regionally rare species are not covered by red lists, thus compromising conservation strategies. This is the case with ecotones. After applying three rarity criteria based on both geographic range and on local occurrences to 1755 species of a large transitional zone in South America, we discuss how the priority hierarchy found in the study region can be combined with red books in decision-making to reduce the gaps left by the classification systems adopted by these lists. We point out clear directions about how these species can be used to guide decision making in ecotones, including identifying species of interest for conservation that have not yet been included in red lists, structuring a species group of narrow distribution occurring in areas adjacent to ecological transitions into a hierarchy of priorities for conservation, and using species of the highest hierarchy position in decision making. We believe that the combination of regional lists with national and international red lists is an interesting strategy in the management of species for conservation.

Keywords
IUCN, Red list, conservation gaps, Regional responsibility, Local rarity, Vulnerable habitat