Imperial College London


Faculty of Natural SciencesDepartment of Life Sciences (Silwood Park)

Professor of Ecology



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1.4Centre for Population BiologySilwood Park






BibTex format

author = {Marsh, C and Feitosa, R and Louzada, J and Ewers, R},
doi = {10.1111/jbi.13357},
journal = {Journal of Biogeography},
pages = {1966--1979},
title = {Is β-diversity of Amazonian ant and dung beetles communities elevated at rainforest edges?},
url = {},
volume = {45},
year = {2018}

RIS format (EndNote, RefMan)

AB - AimThousands of kilometres of rainforest edges are created every year through forest fragmentation, but we have little knowledge of the impacts of edges on spatial patterns of species turnover and nestedness components of βdiversity.LocationA quasiexperimental landscape in the northeast Brazilian Amazon.MethodsWe sampled dung beetles and ants using a sampling design based on a fractal series of equilateral triangles that naturally allows examination at multiple spatial scales. We sampled two edge types (primarysecondary and primaryEucalyptus forest) and three control sites immersed in primary, secondary and Eucalyptus forest. We measured βdiversity between communities across the primary forestmatrix edge and within communities at up to 1 km from the forest edge. We examined βdiversity at multiple scales by partitioning the dissimilarity matrix into fractal orders representing interpoint distances of ~32, ~100, ~316 and ~1,000 m and into turnover and nestedness components.ResultsTurnover but not nestedness was greater across the primaryEucalyptus forest than primarysecondary forest edge. There was spillover of species across edges in both directions. Across edges and within controls, turnover was the main driver of βdiversity. Within community, βdiversity was increased for dung beetles at large scales (~300–1,000 m) at both edge types. This increase, however, was driven by elevated nestedness. Levels of βdiversity were affected even ~300 m into habitat interiors, but appeared to be at control levels by 1 km.Main conclusionsThe effects of edges on the spatial dynamics of community composition penetrated far beyond the typical distances at which forest structure and microclimate are altered. This indicates that for a significant proportion of Amazonian communities, the underlying processes determining diversity may be impacted by deforestation.
AU - Marsh,C
AU - Feitosa,R
AU - Louzada,J
AU - Ewers,R
DO - 10.1111/jbi.13357
EP - 1979
PY - 2018///
SN - 0305-0270
SP - 1966
TI - Is β-diversity of Amazonian ant and dung beetles communities elevated at rainforest edges?
T2 - Journal of Biogeography
UR -
UR -
UR -
VL - 45
ER -