Traditional shade coffee forest systems act as refuges for medium- and large-sized mammals as natural forest dwindles in Ethiopia

Behailu Etana,Anagaw Atickem,Diress Tsegaye,Afework Bekele,Matthias De Beenhouwer,Kitessa Hundera,Luc Lens,Peter J Fashing,Nils Chr Stenseth

doi:10.1016/j.biocon.2021.109219

Abstract

Ethiopian shade coffee plantations are well documented to be bird-friendly and act as refuges for disappearing tree species. The extent to which these plantations support mammal conservation, as well as mammal sensitivity to coffee intensification, remain little studied. We studied the distribution and diversity of mammals under three coffee management systems of differing intensities (i.e., semi-forest, semi-plantation, and plantation) and in nearby natural forests in Belete-Gera Forest Priority Area, southwestern Ethiopia. We detected mammals using 30 infrared camera traps at 90 stations for a total of 4142 camera days. We used the Shannon-Wiener diversity index for diversity analysis, generalized linear mixed model for comparison of independent detection, and non-metric multidimensional scaling to show the mammalian community composition. We recorded 8815 digital videos and a total of 23 mammal species. The overall species richness, diversity, and detection of mammals did not differ between the two traditional shade coffee management systems and the natural forest but was lower in the plantation coffee system. The mammal community composition also shows variation in resilience to coffee management intensity, with primates appearing to be generally more tolerant to management intensification. We ultimately show that traditionally managed Ethiopian shade coffee farms shelter diverse mammal communities, comparable to those in nearby natural forests. Therefore, supporting traditional coffee management practices and certifying them as mammal-friendly should be implemented as strategies for the conservation of mammals, as natural forests continue to decline in Ethiopia.

Highlights

Protected areas contain only a small proportion of the Earth's biodiversity and are under increasing threat from human activities (Laurance et al, 2012; Jones et al, 2018)
We show that traditionally managed Ethiopian shade coffee farms shelter diverse mammal communities, comparable to those in nearby natural forests
To better understand how mammalian community patterns change along a coffee intensification gradient, our study investigated the effects of coffee farm management intensification on mammalian di versity and examined the conservation potential of shade coffee agri cultural systems using camera trap data in Belete-Gera National Forest Priority Area, southwestern Ethiopia

Summary

Introduction

Protected areas contain only a small proportion of the Earth's biodiversity and are under increasing threat from human activities (Laurance et al, 2012; Jones et al, 2018). These areas alone are not enough to ensure long-term biodiversity conservation (Rodrigues et al, 2004; Chazdon et al, 2009; Mora and Sale, 2011). The number and composition of taxa retained in agroecosystems depend strongly on management practices and intensity (Harvey et al, 2008; WilliamsGuillen and Perfecto, 2010; De Beenhouwer et al, 2015)

Results

Discussion

Conclusion