News and Publications from the Corridor Project at the Savannah River Site

In the news (selected highlights)

Damschen, et al. 2019 has featured in over 20 news stories

Haddad, et al. 2015 has featured in over 100 news stories

NPR story featuring Ellen Damschen, accompanying Damschen, et al. 2006 “Linking isolated habitats said to help biodiversity”
NY Times, Cornelia Dean, 2006 “Research shows that plants like a path to biodiversity”
NPR story featuring Doug Levey, accompanying Levey, et al 2005 “Judging corridors meant to shuffle wildlife”


Bartel, S.L. and J.L. Orrock. 2022. The important role of animal social status in vertebrate seed dispersal. Ecology Letters, 25, 1094–1109.

Brinkerhoff, R.J., N.M. Haddad, and J.L. Orrock.  2005.  Corridors and olfactory predator cues affect small mammal behavior.  Journal of Mammalogy 86:662-669. [PDF reprint]

Bowne, D.R., J.D. Peles, and G.W. Barrett.  1999.  Effects of landscape spatial structure on movement patterns of the hispid cotton rat (Sigmodon hispidus).  Landscape Ecology 14:53-65.

Brudvig, L.A., E.I. Damschen, J.J. Tewksbury, N.M. Haddad, and D.J. Levey.  2009.  Corridors promote biodiversity spillover into adjacent habitat.  Proceedings of the National Academy of Sciences 106:9328-9332.  [PDF reprint]

Brudvig, L.A., S.A. Wagner, E.I. Damschen.  2012.  Corridors promote fire via connectivity and edge effects.  Ecological Applications  22:937-946. [PDF reprint]

Brudvig, L.A., E.I. Damschen, N.M. Haddad, D.J. Levey, and  J.J. Tewksbury. 2015. The influence of habitat fragmentation on multiple plant-animal interactions and plant reproduction.  Ecology 96:2669-2678.  [PDF reprint]

Brudvig, L. A., S. J. Leroux, C. H. Albert, E. M. Bruna, K. F. Davies, R. M. Ewers, D. J. Levey, R. Pardini, and J. Resasco. 2017. Evaluating conceptual models of landscape change. Ecography 40:74-84. [PDF reprint]

Burt, M. A., and L. A. Brudvig. 2019. Pollen Limitation and Self-Compatibility in Three Pine Savanna Herbs. Southeastern Naturalist 18:405-418, 414.doi:/10.1656/058.018.0307

Burt, M.A., Resasco, J., Haddad, N.M., and S.R. Whitehead. 2022. Ants Disperse Seeds Farther in Habitat Patches with Corridors. Ecosphere : e4324

Caughlin, T. T., E. I. Damschen, N. M. Haddad, D. J. Levey, C. Warneke, and L. A. Brudvig. 2019. Landscape heterogeneity is key to forecasting outcomes of plant reintroduction. Ecological Applications 29(2):e01850. doi:10.1002/eap.1850

Collins, C. D., C. Banks-Leite, L. A. Brudvig, B. L. Foster, W. M. Cook, E. I. Damschen, A. Andrade, M. Austin, J. L. Camargo, D. A. Driscoll, R. D. Holt, W. F. Laurance, A. O. Nicholls, and J. L. Orrock. 2017. Fragmentation affects plant community composition over time. Ecography 40:119-130. [PDF reprint]

Craig, M.T., Orrock, J.L., and Brudvig, L.A.  2011.  Edge-mediated patterns of seed removal in experimentally connected and fragmented landscapes. Landscape Ecology 26:373-1381.  [PDF reprint]

Danielson, B.J., and M.W. Hubbard.  2000.  The influence of corridors on the movement behavior of individual Peromyscus polionotus in experimental landscapes.  Landscape Ecology 15:323-331.

Damschen, E.I., N.M. Haddad, J.L. Orrock, J.J. Tewksbury, and D.J. Levey.  2006.  Corridors increase plant species richness at large scales.  Science 313:1284-1286.  [PDF reprint]

Damschen, E.I., L.A. Brudvig, N.M. Haddad, D.J. Levey, J.L. Orrock, and J.J. Tewksbury.  2008.  The movement ecology and dynamics of plant communities in fragmented landscapes.  Proceedings of the National Academy of Sciences 105:19078-19083.  [PDF reprint]

Damschen, E.I., and L.A. Brudvig.  2012.  Landscape connectivity strengthens local–regional richness relationships in successional plant communities.  Ecology 93:704-710.  [PDF reprint] 

Damschen, E.I., D.V. Baker, G. Bohrer, R. Nathan, J.L. Orrock, J.R. Turner, L.A. Brudvig, N.M. Haddad, D.J. Levey, and J.J. Tewksbury. 2014. How fragmentation and corridors affect wind dynamics and seed dispersal in open habitats. Proceedings of the National Academy of Sciences 111:3484-3489. [PDF reprint]

Damschen, E.I., Brudvig, L.A., Burt, M.A., Fletcher, R.J., Haddad, N.M., Levey, D.J., Orrock, J.L., Resasco, J. and Tewksbury, J.J., 2019. Ongoing accumulation of plant diversity through habitat connectivity in an 18-year experiment. Science, 365:1478-1480. [visit website]

Evans, D.M.,  N.E. Turley, D.J. Levey, and J.J. Tewksbury.  2012.Habitat patch shape, not corridors, determines herbivory and fruit production of an annual plant.  Ecology 93:1016-1025. [PDF reprint]

Evans, D.M.,  D.J. Levey, and J.J. Tewksbury.  2013.  Landscape corridors promote long-distance seed dispersal by birds during winter but not during summer at an experimentally fragmented restoration site.  Ecological Restoration 31:23-30. [PDF reprint]

Evans, D.M., N.E. Turley, and J.J. Tewksbury.  2013.  Habitat edge effects alter ant-guard protection against herbivory. Landscape Ecology 28:1743-1754. [PDF reprint]

Fletcher, R. J., R. K. Didham, C. Banks-Leite, J. Barlow, R. M. Ewers, J. Rosindell, R. D. Holt, A. Gonzalez, R. Pardini, E. I. Damschen, F. P. L. Melo, L. Ries, J. A. Prevedello, T. Tscharntke, W. F. Laurance, T. Lovejoy, and N. M. Haddad. 2018. Is habitat fragmentation good for biodiversity? Biological Conservation 226:9-15 [PDF reprint]

Fried, J.H., D.J. Levey, and J.A. Hogsette. 2005.  Habitat corridors function as both drift fences and movement conduits for dispersing flies.  Oecologia 143:645-651  [pdf reprint]

Graham, C.D.K., Warneke, C.R., Weber, M., and Brudvig, L.A. The impact of habitat fragmentation on domatia-dwelling mites and a mite-plant-fungus tritrophic interaction. Landsc Ecol 37, 3029–3041 (2022). doi:10.1007/s10980-022-01529-2

Griffin, S. R., & Haddad, N. M. 2021. Connectivity and edge effects increase bee colonization in an experimentally fragmented landscape Ecography 44:919-927 [Article]

Haddad, N.M. 1999.  Corridor use predicted from behaviors at habitat boundaries.  The American Naturalist 153:215-227. [PDF reprint]

Haddad, N.M. 1999.  Corridor and distance effects on interpatch movements: a landscape experiment with butterflies. Ecological Applications 9:612-622.  [PDF reprint]

Haddad, N.M. and K. Baum. 1999.  An experimental test of corridor effects on butterfly densities.  Ecological Applications 9:623-633. [PDF reprint]

Haddad, N.M. 2000.  Corridor length and patch colonization by a butterfly, Junonia coeniaConservation Biology 14:738-745. [PDF reprint]

Haddad, N.M., D.R. Bowne, A. Cunningham, B. Danielson, D. Levey, S. Sargent, and T. Spira.  2003.  Corridor use by diverse taxa.  Ecology 84:609-615. [PDF reprint]

Haddad, N.M. and J.J. Tewksbury.  2005.  Low quality habitat corridors as movement conduits for two butterfly species.  Ecological Applications 15:250-257.  [PDF reprint]

Haddad, N.M. and J.J. Tewksbury. 2006. Impacts of corridors on populations and communities. Pages 390-415 in K. Crooks and M. Sanjayan, editors, Connectivity Conservation, Cambridge University Press, Cambridge, England.  [PDF reprint]

Haddad N.M.  2008.  Finding the corridor more traveled.  Proceedings of the National Academy of Sciences 105:19569-19570. [PDF reprint]

Haddad, N.M., B. Hudgens, E.I. Damschen, D.J. Levey, J.L. Orrock, J.J. Tewksbury, and A.J. Weldon.  2011.  Assessing positive and negative ecological effects of corridors.  Pages 475-503 in J. Liu, V. Hull, A.T. Morzillo, and J.A. Wiens, Sources, sinks, and sustainability, Cambridge University Press, Cambridge, UK [PDF reprint]

Haddad, N.M.  2009.  Principles of reserve design.  Pages 529-537 in S. Levin, editor, Princeton guide to ecology.  Princeton University Press, New Jersey.

Haddad, N.M.  2012.  Connecting ecology and conservation through experiment.  Nature Methods 794-795.  [PDF reprint]

Haddad, N.M., L.A. Brudvig, E.I. Damschen, D.M. Evans, B.L. Johnson, D.J. Levey, J.L. Orrock, J. Resasco, L.L. Sullivan, J.J. Tewskbury, S.A. Wagner, A.J. Weldon.  2014. Potential negative ecological effects of corridors.  Conservation Biology 28:1178-1187. [PDF reprint]

Haddad, N.M., L.A. Brudvig, J. Clobert, K.F. Davies, A. Gonzalez, R.D. Holt, T.E. Lovejoy, J.O. Sexton, M.P. Austin, C.D. Collins, W.M. Cook, E.I. Damschen, R.M. Ewers, B.L. Foster, C.N. Jenkins, A.J. King, W.F. Laurance, D.J. Levey, C.R. Margules, B.A. Melbourne, A.O. Nicholls, J.L. Orrock, D.-X. Song, and J.R. Townshend. 2015. Habitat fragmentation and its lasting impact on Earth’s ecosystems. Science Advances 1, e1500052.  [PDF reprint]

Haddad, N. M., R. D. Holt, R. J. Jr Fletcher, M. Loreau, and J. Clobert. 2017. Connecting models, data, and concepts to understand fragmentation’s ecosystem-wide effects. Ecography 40:1-8. [PDF reprint]

Haddad, N. M., Gonzalez, A., Brudvig, L. A., Burt, M. A., Levey, D. J. and Damschen, E. I. 2017. Experimental evidence does not support the Habitat Amount Hypothesis. Ecography 40:48-55. doi:10.1111/ecog.02535 [PDF reprint]

Hawn, C. L., Herrmann, J. D., Griffin, S. R. and Haddad, N. M. 2018. Connectivity increases trophic subsidies in fragmented landscapes. Ecology Letters 21: 1620-1628. doi:10.1111/ele.12958 [PDF reprint]

Herrmann, J.D., T.A. Carlo, L.A. Brudvig, E.I. Damschen, N.M. Haddad, D.J. Levey, J.L. Orrock, and J.J. Tewksbury.  2016.  Connectivity from a different perspective: comparing seed dispersal kernels in connected vs. unfragmented landscapes.  Ecology 1274-1282. [PDF reprint]

Herrmann, J.D., N.M. Haddad, and D.J. Levey. 2017. Testing the relative importance of local resources and landscape connectivity on Bombus impatiens (Hymenoptera, Apidae) colonies. Apidologie DOI: 10.1007/s13592-017-0499-1. [PDF reprint]

Herrmann, J. D., N. M. Haddad, and D. J. Levey.  2018. Mean body size predicts colony performance in the common eastern bumble bee (Bombus impatiens). Ecological Entomology, 43: 458-462. 10.1111/een.12517 [open online]

Hudgens, B.R. and N.M. Haddad. 2003.  Predicting which species will benefit from corridors in fragmented landscapes from population growth models. The American Naturalist 161:808-820.[PDF reprint]

Johnson, B.L., and N.M. Haddad. 2011. Edge effects, not connectivity, determine the incidence and development of a foliar fungal plant disease. Ecology 92:1551-1558.  [PDF reprint]

Levey, D.J., B.M. Bolker, J.J. Tewksbury, S. Sargent, and N.M. Haddad.  2005. Effects of landscape corridors on seed dispersal by birds. Science 309:146-148.  [PDF reprint]  [review article in Science]

Levey, D.J., B.M. Bolker, J.J. Tewksbury, S. Sargent, and N.M. Haddad.  2005.  Landscape corridors: Possible dangers? (response).  Science 310:779-783.  [PDF reprint]

Levey, D.J. and S. Sargent. 2000. A simple method for tracking vertebrate-dispersed seeds. Ecology 81:267-274.

Levey, D. J., J. J. Tewksbury, and B. M. Bolker.  2008.  Modeling and measuring long-distance dispersal in a landscape context.  Journal of Ecology 96:599-608.

Levey, D.J., Caughlin, T.T., Brudvig, L.A., Haddad, N.M., Damschen, E.I., Tewksbury, J.J., Evans, D.M. 2016. Disentangling fragmentation effects on herbivory in understory plants of longleaf pine savanna.  Ecology:97:2248-2258 [PDF reprint]

Mabry, K.E., and G.W. Barrett.  2002.  Effects of corridors on home range sizes and interpatch movements of three small mammal species. Landscape Ecology 17:629-636.

Mabry, K.E., E.A. Dreelin, and G.W. Barrett.  2003.  Influence of landscape elements on population densities and habitat use of three small-mammal species.  Journal of Mammalogy 84:20-25.

Mony, C., Uroy, L., Khalfallah, F., Haddad, N.M., and Vandenkoornhuyse, P. 2022. Landscape connectivity for the invisibles. Ecography, 2022: e06041 doi: 10.1111/ecog.06041

Orrock, J. L. 2005.  Conservation corridors affect the fixation of novel alleles. Conservation Genetics 6:623-630.  [PDF reprint]

Orrock, J.L. and E.I. Damschen.  2005.  Corridors cause differential seed predation.  Ecological Applications 15:793-798.  [PDF reprint]

Orrock, John L. and B. J. Danielson.  2005.  Patch shape, connectivity, and foraging by the oldfield mouse, Peromyscus polionotusJournal of Mammalogy 86:569-575.  [PDF reprint]

Orrock, J.L., B. J. Danielson, M. J. Burns, and D. J. Levey.  2003.  Spatial ecology of predatory-prey interactions: corridors and patch shape influence seed predation. Ecology 84:2589-2599.  [PDF reprint]

Orrock, J. L., D. J. Levey, B. J. Danielson, and E. I. Damschen.  2006.  Seed predation, not seed dispersal, explains the landscape-level abundance of an early-successional plant. Journal of Ecology 94:838-845.  [PDF reprint]

Orrock, J.L., Curler, G.R., Danielson, B.J., and Coyle, D.R.  2011.Large-scale experimental landscapes reveal distinctive effects of patch shape and connectivity on arthropod communities.  Landscape Ecology 26: 1361-1372.  [PDF reprint]

Peles, J.D., D.R. Bowne, and G.W. Barrett. 1999. Influence of landscape structure on movement patterns of small mammals. Landscape Ecology of Small Mammals. Gary W. Barrett and John D. Peles, editors. Springer-Verlag: New York.

Resasco, J., D.J. Levey, and E.I. Damschen. 2012. Habitat corridors alter relative trophic position of fire ants. Ecosphere 3:art100. [PDF reprint]

Resasco, J. N.M. Haddad, J.L. Orrock, D. Shoemaker, L.A. Bruvig, E.I. Damschen, J.J. Tewksbury, D.J. Levey.  2014.  Landscape corridors can increase invasion by an exotic species and reduce diversity of native species.  Ecology 95:233-239. [PDF reprint]

Resasco, J., Bruna, E., Haddad, N., Banks‐Leite, C., & Margules, C. 2017. The contribution of theory and experiments to conservation in fragmented landscapes. Ecography 40:109-118 doi:10.1111/ecog.02546 [PDF reprint]

Resasco, J., Burt, M.A., Orrock, J.L., Haddad, N.M., Shoemaker, D. & Levey, D.J. 2022. Transient effects of corridors on polygyne fire ants over a decade. Ecological Entomology 48:263–268 doi:/10.1111/een.13214

Sisk, T.D., and N.M. Haddad.  2002.  Incorporating the effects of habitat edges into landscape models:  Effective area models for management.  Pp. 208-240 in J. Liu and W.W. Taylor, Integrating landscape ecology into natural resource management, Cambridge University Press, Cambridge, UK.

Sullivan, L.L., B.L. Johnson, L.A. Brudvig, and N. Haddad. 2011. Can dispersal mode predict corridor effects on plant parasites? Ecology 92:1559-1564 [PDF reprint]

Tewksbury, J.J., D.J. Levey, N.M. Haddad, S. Sargent, J.L. Orrock, A. Weldon, B.J. Danielson, J. Brinkerhoff, E.I. Damschen, and P. Townsend.  2002.  Corridors affect plants, animals, and their interactions in fragmented landscapes. Proceedings of the National Academy of Sciences 99:12923-12926. [PDF reprint] 

Townsend, P. A. and D. J. Levey. 2005.  An experimental test of whether habitat corridors affect pollen transfer. Ecology 86:466-475.  [PDF reprint]

Warneke, C. R., Caughlin, T. T., Damschen, E. I., Haddad, N. M., Levey, D. J., and Brudvig, L. A.. 2022. Habitat fragmentation alters the distance of abiotic seed dispersal through edge effects and direction of dispersal. Ecology 103:e03586 doi:10.1002/ecy.3586

Weldon, A.J.  2006.  How corridors reduce Indigo Bunting nest success.  Conservation Biology 20:1300-1305.  [PDF reprint]

Weldon, A.J. and N.M. Haddad.  2005.  The effects of patch shape on Indigo Buntings: evidence for an ecological trap.  Ecology 86:1422-1431. [PDF reprint]

Wells, C.N., R.S. Williams, G.L. Walker, and N.M. Haddad.  2009.  Effects of habitat connectivity on genetic variation of the buckeye butterfly (Junonia coenia) in a landscape experiment.  Southeastern Naturalist 8:709-722 [PDF reprint]