Lessons from Fragmentation Research: Improving Management and Policy Guidelines for Biodiversity Conservation

Abstract: Ideally, science should inform policy development in all areas of human endeavor. Nowhere is this truer than in the case of human land use and our impact on the natural environment. Unfortunately, little recent science has percolated into policy guidelines for tropical forest management in areas facing serious threats. To help science inform policy we present six guidelines, which have been empirically proven important, for the management of fragmented landscapes: (1) incorporate protection measures as part of development projects; (2) protect large areas and prevent the fragmentation of currently contiguous large patches of forest; (3) manage forest edges when creating forest patches; (4) protect gallery forests along waterways to connect isolated forest patches; (5) control the use of fire and the introduction of exotic plant species and limit the use of toxic chemicals in areas near forest patches; and (6) promote reforestation and forest cover in critical areas of landscapes. Straightforward linkages between science and policy formulation can result in simple, yet powerful, changes in land-use patterns and have a concurrent positive effect on biodiversity and natural resources.

[1]  Marcelo Tabarelli,et al.  Tree species impoverishment and the future flora of the Atlantic forest of northeast Brazil , 2000, Nature.

[2]  M. Tabarelli,et al.  Forest edge in the Brazilian Atlantic forest: drastic changes in tree species assemblages , 2004, Oryx.

[3]  V. Radeloff,et al.  Wildlife Survival Beyond Park Boundaries: the Impact of Slash‐and‐Burn Agriculture and Hunting on Mammals in Tambopata, Peru , 2003 .

[4]  G. B. Williamson,et al.  Receding Forest Edges and Vanishing Reserves , 2000, Science.

[5]  B. Zimmerman,et al.  Relevance of the equilibrium theory of island biogeography and species-area relations to conservation with a case from Amazonia , 1986 .

[6]  J. Terborgh,et al.  Maintenance of Diversity in Tropical Forests , 1992 .

[7]  T. Lovejoy,et al.  Matrix habitat and species richness in tropical forest remnants , 1999 .

[8]  W. Laurance,et al.  Effect of surrounding vegetation on edge-related tree mortality in Amazonian forest fragments , 1999 .

[9]  C. Tucker,et al.  Tropical Deforestation and Habitat Fragmentation in the Amazon: Satellite Data from 1978 to 1988 , 1993, Science.

[10]  R. Didham,et al.  Insects in fragmented forests: a functional approach. , 1996, Trends in ecology & evolution.

[11]  J. Olden,et al.  Ecological and evolutionary consequences of biotic homogenization. , 2004, Trends in ecology & evolution.

[12]  T. Lovejoy,et al.  Conservation: Rainforest fragmentation kills big trees , 2000, Nature.

[13]  William F. Laurance,et al.  How to Creatively Fragment a Landscape , 1997 .

[14]  E. Bruna Biodiversity: Seed germination in rainforest fragments , 1999, Nature.

[15]  L. Fahrig Effects of Habitat Fragmentation on Biodiversity , 2003 .

[16]  D. Nepstad,et al.  Positive feedbacks in the fire dynamic of closed canopy tropical forests , 1999, Science.

[17]  C. Peres Paving the way to the future of Amazonia. , 2001, Trends in ecology & evolution.

[18]  H. Howe,et al.  Low Recruitment of Trees Dispersed by Animals in African Forest Fragments , 2001 .

[19]  R. Mittermeier,et al.  Biodiversity hotspots for conservation priorities , 2000, Nature.

[20]  V. Kapos,et al.  Complex edge effects on soil moisture and microclimate in central Amazonian forest , 1995, Journal of Tropical Ecology.

[21]  L. Gautier,et al.  A recent history of forest fragmentation in southwestern Ivory Coast , 2004, Biodiversity & Conservation.

[22]  C. Gascon,et al.  The conservation value of linear forest remnants in central Amazonia , 1999 .

[23]  Marcelo Tabarelli,et al.  Effects of habitat fragmentation on plant guild structure in the montane Atlantic forest of southeastern Brazil , 1999 .

[24]  C. Uhl,et al.  FIRE IN AMAZONIAN SELECTIVELY LOGGED RAIN FOREST AND THE POTENTIAL FOR FIRE REDUCTION , 1997 .

[25]  J. Malcolm The small mammals of Amazonian forest fragments : pattern and process / , 1991 .

[26]  C. Potter,et al.  Large-scale impoverishment of Amazonian forests by logging and fire , 1999, Nature.

[27]  P. Barreto,et al.  Extraction of a high-value natural resource in Amazonia: the case of mahogany. , 1995 .

[28]  William F. Laurance,et al.  The Future of the Brazilian Amazon , 2001, Science.

[29]  M. Tabarelli,et al.  Forest fragmentation, synergisms and the impoverishment of neotropical forests , 2004, Biodiversity & Conservation.

[30]  R. Didham,et al.  Ecosystem Decay of Amazonian Forest Fragments: a 22‐Year Investigation , 2002 .

[31]  I. Turner Species loss in fragments of tropical rain forest: a review of the evidence. , 1996 .

[32]  J. Terborgh,et al.  Ecological Meltdown in Predator-Free Forest Fragments , 2001, Science.

[33]  G. Powell,et al.  Population dynamics of male euglossine bees in Amazonian forest fragments , 1987 .

[34]  S. Sarkar,et al.  Systematic conservation planning , 2000, Nature.