Haddad Lab Publications
Also found at Google Scholar
2025
Wepprich, T., E. Henry, and N. M. Haddad. 2025. Voltinism shifts in response to climate warming generally benefit populations of multivoltine butterflies. Ecology Letters 28(4): e70018. DOI: 10.1111/ele.70018
Edwards, C. B., E. F. Zipkin, E. H. Henry, N. M. Haddad, M. L. Forister, K. J. Burls, S. P. Campbell, E. E. Crone, J. Diffendorfer, M. R. Douglas, R. G. Drum, C. E. Fallon, J. Glassberg, E. M. Grames, R. Hatfield, S. Hershcovich, S. Hoffman Black, E. A. Larsen, W. Leuenberger, M. J. Linders, T. Longcore, D. A. Marschalek, J. Michielini, N. Neupane, L. Ries, A. M. Shapiro, A. B. Swengel, S. R. Swengel, D. J. Taron, B. Van Deynze, J. Wiedmann, W. E. Thogmartin, and C. B. Schultz. 2025. Rapid butterfly declines across the United States during the 21st century. Science 387:1090-1094. DOI:10.1126/science.adp4671
Gonçalves-Souza, T., J. M. Chase, N. M. Haddad, M. H. Vancine, R. K. Didham, F. L. P. Melo, M. A. Aizen, E. Bernard, A. G. Chiarello, D. Faria, H. Gibb, M. G. de Lima, L. F. S. Magnago, E. Mariano-Neto, A. A. Nogueira, A. Nemésio, M. Passamani, B. X. Pinho, L. Rocha-Santos, R. C. Rodrigues, N. V. H. Safar, B. A. Santos, A. Soto-Werschitz, M. Tabarelli, M. Uehara-Prado, H. L. Vasconcelos, S. Vieira, and N. J. Sanders. 2025. Species turnover does not rescue biodiversity in fragmented landscapes. Nature DOI:10.1038/s41586-025-08688-7
Gonçalves-Souza, T., Vancine, M.H., Sanders, N.J., Haddad, N.M., Cortinhas, L., Aase, A.L.T.O., de Aguiar, W.M., Aizen, M.A., Arroyo-Rodríguez, V., Baz, A., Benchimol, M., Bernard, E., Bertotto, T.J., Bispo, A.A., Bogoni, J.A., Boldorini, G.X., Bragagnolo, C., Brosi, B., Cantalice, A.S., do Carmo, R.F.R., Cazeta, E., Chiarello, A.G., de la Sancha, N.U., Didham, R.K., Faria, D., Filgueiras, B., Figueira, J.E.C., Galvão, G.A., Garey, M.V., Gibb, H., Gómez-Martínez, C., González, E., de Gusmão, R.A.F., Henry, M., de Jesus, S., Kloss, T.G., Lázaro, A., Leandro-Silva, V., de Lima, M.G., da Silva Lima, I., Lins-e-Silva, A.C.B., Nally, R.M., Magalhães, A.R., Magnago, L.F.S., Manu, S., Mariano-Neto, E., Mbora, D.N.M., Melo, F.P.L., Mutua, M.N., Neckel-Oliveira, S., Nemésio, A., Nogueira, A.A., Oliveira, P.M.D.A., Pádua, D.G., Paes, L., de Paiva, A.B., Passamani, M., Pena, J.C., Peres, C.A., Pinho, B.X., Pons, J.-M., Prasniewski, V.M., Reiniö, J., dos Santos Rocha, M., Rocha-Santos, L., Rodal, M.J., Rodrigues, R.C., Safar, N.V.H., Salomão, R.P., Santos, B.A., Santos, M.N., dos Santos, J.P., Savilaakso, S., Schaefer, C.E.G.R., Silva, M.A.M., da Silva, F.R., Silva, R.J., Simonelli, M., Soto-Werschitz, A., Stireman, J.O., III, Storck-Tonon, D., Szinwelski, N., Tabarelli, M., Teixeira, C.P., Totland, Ø., Uehara-Prado, M., Vaz-de-Mello, F.Z., Vasconcelos, H.L., Vieira, S.A. and Chase, J.M. (2025), LandFrag: A dataset to investigate the effects of forest loss and fragmentation on biodiversity. Global Ecology Biogeography 34: e70015. DOI:10.1111/geb.70015
Hulting, K. A., Brudvig, L. A., Damschen, E. I., Levey, D. J., Resasco, J., Tewksbury, J. J., and Haddad, N. M. 2025. Habitat edges decrease plant reproductive output in fragmented landscapes. Journal of Ecology 113:531–541. DOI:10.1111/1365-2745.14452
2024
Van Deynze, B., Swinton, S.M., Hennessy, D.A., Haddad, N.M. and Ries, L., 2024. Insecticides, more than herbicides, land use, and climate, are associated with declines in butterfly species richness and abundance in the American Midwest. PLOS ONE 19(6), p.e0304319. DOI: 10.1371/journal.pone.0304319\
Riva, F., Haddad, N., Fahrig, L. and Banks‐Leite, C., 2024. Principles for area‐based biodiversity conservation. Ecology Letters 27(6), p.e14459. DOI: 10.1111/ele.14459
Hulting, K.A., Kemmerling, L.R., Griffin, S.R., Webb, J., Brown, A.K. and Haddad, N.M., 2024. Seed mix design and floral resources drive multitrophic interactions in prairie restoration. Journal of Applied Ecology 61:859-868. DOI: 10.1111/1365-2664.14605
Kiekebusch, E., Louthan, A.M., Morris, W.F., Hudgens, B.R. and Haddad, N.M., 2024. Vital rate responses to temperature lead to butterfly population declines under future warming scenarios. Journal of Insect Conservation 28:1079-1091. DOI: 10.1007/s10841-024-00626-8
Richards, J.H., Charton, K.T., McFarlane, S.L., Widell, A.F., Haddad, N.M., Wyer, M.B. and Damschen, E.I. 2025. Rethinking the undergraduate textbook as a tool to build a diverse community of ecologists. Frontiers in Ecology and the Environment e2819. DOI: 10.1002/fee.2819
Robertson, G.P., Wilke, B., Ulbrich, T., Haddad, N.M., Hamilton, S.K., Baas, D.G., Basso, B., Blesh, J., Boring, T.J., Campbell, L. and Cassida, K.A., 2024. The LTAR Cropland Common Experiment at the Kellogg Biological Station. Journal of Environmental Quality DOI:10.1002/jeq2.20638
2023
Fletcher, R. J. Jr., Betts, M. G., Damschen, E. I., Hefley, T. J., Hightower, J., Smith, T. A. H., Fortin, M.-J., and Haddad, N. M. 2023. Addressing the problem of scale that emerges with habitat fragmentation. Global Ecology and Biogeography 32:828–841 DOI: 10.1111/geb.13658
Isbell, F., et al. 2023. Expert perspectives on global biodiversity loss and its drivers and impacts on people. Frontiers in Ecology and the Environment 21:94-103 DOI: 10.1111/gcb.14932
Kemmerling, L.R., McCarthy, A.C, Brown, C.S., Haddad, N.M. 2023. Butterfly biodiversity increases with prairie strips and conservation management in row crop agriculture. Insect Conservation and Diversity 16:828–837 DOI: 10.1111/icad.12675
Resasco, J., Burt, M.A., Orrock, J.L., Haddad, N.M., Shoemaker, D., and Levey, D.J. 2023. Transient effects of corridors on polygyne fire ants over a decade. Ecological Entomology 48:263–268 DOI: 10.1111/een.13214
Cayton, H.L., Haddad, N.M., Henry, E.H., Himes Boor, G.K., Kiekebusch, E.M., Morris, W.F. and Aschehoug, E.T. (2023), Restoration success varies based on time since restoration in a disturbance-dependent ephemeral wetland ecosystem. Restoration Ecology 31: e13883 DOI: 10.1111/rec.13883
2022
Kemmerling, L.R., Rutkoski, C.E., Evans, S.E., Helms IV, J.A., Cordova-Ortiz, E.S., Smith, J.D., Vázquez Custodio, J.A., Vizza, C. and Haddad, N.M., 2022. Prairie strips and lower land use intensity increase biodiversity and ecosystem services. Frontiers in Ecology and Evolution 16:828–837 DOI: 10.1111/icad.12675
Burt, M. A., Resasco, J., Haddad, N. M., & Whitehead, S. R. 2022. Ants disperse seeds farther in habitat patches with corridors. Ecosphere, 13:e4324 DOI: 10.1002/ecs2.4324
Schulte, L.A., Dale, B.E., Bozzetto, S., Liebman, M., Souza, G.M., Haddad, N., Richard, T.L., Basso, B., Brown, R.C., Hilbert, J.A. and Arbuckle, J.G., 2022. Meeting global challenges with regenerative agriculture producing food and energy. Nature Sustainability 5:384-388 DOI: 10.1038/s41893-021-00827-y
Warneke, C. R., Caughlin, T. T., Damschen, E. I., Haddad, N. M., Levey, D. J., & 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
Henry, E. H., Terando, A. J., Morris, W. F., Daniels, J. C., & Haddad, N. M. 2022. Shifting precipitation regimes alter the phenology and population dynamics of low latitude ectotherms. Climate Change Ecology 100051 DOI: 10.1016/j.ecochg.2022.100051
Hudson, A.R., Peters, D.P., Blair, J.M., Childers, D.L., Doran, P.T., Geil, K., Gooseff, M., Gross, K.L., Haddad, N.M., Pastore, M.A. and Rudgers, J.A. 2022. Cross-site comparisons of dryland ecosystem response to climate change in the US Long-Term Ecological Research Network. BioScience 72:889-907 DOI: 10.1093/biosci/biab134
Mony, C., Uroy, L., Khalfallah, F., Haddad, N., & Vandenkoornhuyse, P. (2022). Landscape connectivity for the invisibles. Ecography 2022:e06041 DOI: 10.1111/ecog.06041
2021
Cusser, S., Haddad, N. M., & Jha, S. 2021. Unexpected functional complementarity from non-bee pollinators enhances cotton yield. Agriculture, Ecosystems & Environment 314, 107415. DOI: 10.1016/j.agee.2021.107415
Griffin, S. R., & Haddad, N. M. 2021. Connectivity and edge effects increase bee colonization in an experimentally fragmented landscape. Ecography 44919-927 DOI: 10.1111/ecog.05299
Calvert, M. D., Madden, A. A., Nichols, L. M., Haddad, N. M., Lahne, J., Dunn, R. R., & McKenney, E. A. 2021. A review of sourdough starters: ecology, practices, and sensory quality with applications for baking and recommendations for future research. PeerJ 9, e11389 DOI: 10.7717/peerj.11389
Cusser, S., Pechal, J. L., & Haddad, N. M. 2021. Carrion increases pollination service across an urban gradient. Urban Ecosystems 24:243-250 DOI: 10.1007/s11252-020-01032-z
Kemmerling, L. R., S. R. Griffin, and N. M. Haddad. 2021. Optimizing pollinator conservation and crop yield among perennial bioenergy crops. GCB Bioenergy 13:1030-1042 DOI: 10.1111/gcbb.12826
Browning, D. M., et al. 2021. Monitoring agroecosystem productivity and phenology at a national scale: A metric assessment framework. Ecological Indicators 131:108147 DOI:10.1016/j.ecolind.2021.108147
Helms IV, J. A., J. Smith, S. Clark, K. Knupp, and N. M. Haddad. 2021. Ant communities and ecosystem services in organic versus conventional agriculture in the U.S. Corn Belt. Environmental Entomology 50:1276-1285 DOI: 10.1093/ee/nvab105
Cusser, S., J. A. Helms IV, C. Bahlai, and N. M. Haddad. 2021. How long do population level field experiments need to be? Utilising data from the 40-year old LTER network. Ecology Letters 24:1103-1111 DOI: 10.1111/ele.13710
Helms IV, J. A., K. A. Roeder, S. E. Ijelu, I. Ratcliff, and N. M. Haddad. 2021. Bioenergy landscapes drive trophic shifts in generalist ants. Journal of Animal Ecology 90:738-750 DOI: 10.1111/1365-2656.13407
2020
Cusser, S, Bahlai, C, Swinton, SM, Robertson, GP, and Haddad, NM. 2020. Long‐term research avoids spurious and misleading trends in sustainability attributes of no‐till. Global Change Biology 2020; 26:3715–3725. DOI: 10.1111/gcb.15080
Helms IV, J. A., Ijelu, S. E., Wills, B. D., Landis, D. A., & N. M., Haddad. 2020. Ant biodiversity and ecosystem services in bioenergy landscapes. Agriculture, Ecosystems & Environment 290:106780. DOI:10.1016/j.agee.2019.106780
Harvey, J. A., et al. 2020. International scientists formulate a roadmap for insect conservation and recovery. Nature Ecology & Evolution 4:174-176. DOI: 10.1038/s41559-019-1079-8
Costanza, J. K., J. Watling, R. Sutherland, C. Belyea, B. Dilkina, H. Cayton, D. Bucklin, S. S. Romañach, and N. M. Haddad. 2020. Preserving connectivity under climate and land-use change: No one-size-fits-all approach for focal species in similar habitats. Biological Conservation 248:108678. DOI: 10.1016/j.biocon.2020.108678
Henry, E. H., M. O. Burford Reiskind, A. D. Land, and N. M. Haddad. 2020. Maintaining historic disturbance regimes increases species’ resilience to catastrophic hurricanes. Global Change Biology 26:798-806. DOI: 10.1111/gcb.14932
2019
Haddad, N.M. The Last Butterflies: A Scientist’s Quest to Save a Rare and Vanishing Creature. Princeton University Press. June 2019.Available now on Amazon
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.DOI: 10.1126/science.aax8992
Chaplin-Kramer, R., R. P. Sharp, C. Weil, E. M. Bennett, U. Pascual, K. K. Arkema, K. A. Brauman, B. P. Bryant, A. D. Guerry, N. M. Haddad, M. Hamann, P. Hamel, J. A. Johnson, L. Mandle, H. M. Pereira, S. Polasky, M. Ruckelshaus, M. R. Shaw, J. M. Silver, A. L. Vogl, and G. C. Daily. 2019. Global modeling of nature’s contributions to people. Science 366:255-258.DOI: 10.1126/science.aaw3372
Wepprich T, Adrion JR, Ries L, Wiedmann J, Haddad NM (2019) Butterfly abundance declines over 20 years of systematic monitoring in Ohio, USA. PLoS ONE 14(7): e0216270.DOI: 10.1371/journal.pone.0216270
Schultz, C. B., N. M. Haddad, E. H. Henry, and E. E. Crone. 2019. Movement and Demography of At-Risk Butterflies: Building Blocks for Conservation. Annual Review of Entomology 64:167-184 [view e-print] doi: 10.1146/annurev-ento-011118-112204
Helms, Jackson A., Selassie E. Ijelu, and Nick M. Haddad. 2019. Range expansion in an introduced social parasite-host species pair. Biological Invasions 21:2751-2759. [open access]
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:e01850. doi.org/10.1002/eap.1850
2018
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
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. DOI:10.1016/j.biocon.2018.07.022
Cayton, H., and N.M. Haddad. 2018. Water Availability Coincides with Population Declines for an Endangered Butterfly. Diversity 10:94. DOI: 10.3390/d10030094
Haddad N.M. 2018. Resurrection and resilience of the rarest butterflies. PLoS Biology 16(2): e2003488. DOI:10.1371/journal.pbio.2003488
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. DOI: 10.1111/een.12517
2017
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. DOI: 10.1111/ecog.02974
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
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
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.
Haddad, N. and D. Wagner. 2017. Persistent decline in the abundance and diversity of Lepidoptera. News of the Lepidopterists’ Society 59:94-95, 101. [Newletter article PDF reprint]
2016
Sivakoff, F. S., W. F. Morris, E. T. Aschehoug, B. R. Hudgens, and N. M. Haddad. 2016. Habitat restoration alters adult butterfly morphology and potential fecundity through effects on host plant quality. Ecosphere 7(11):e01522.10.1002/ecs2.1522. DOI: 10.1002/ecs2.1522
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 DOI:10.1890/15-0734.1
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 DOI: DOI: 10.1002/ecy.1466
2015
Haddad, N.M. 2015. Corridors for nature, Corridors for people: How can the environmental impacts of roads be reduced? Science 350:1166-1167. DOI: 10.1126/science.aad5072
Chaplin-Kramer, R., I. Ramler, R. Sharp, N.M. Haddad, J.S. Gerber, P. West, L. Mandle, P.C. Engstrom, A. Baccini, S. Sim, C. Mueller, and H. King. 2015. Degradation in carbon stocks near tropical forest edges. Nature Communications 6:10158. DOI: 10.1038/ncomms10158
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. DOI: 10.1890/14-2275.1
Aschehoug, E.T., F.S. Sivakoff, H.L. Cayton, W.F. Morris, and N.M. Haddad. 2015. Habitat restoration affects immature stages of a wetland butterfly through indirect effects on predation. Ecology 96:1761-1767. DOI: 10.1890/14-2403.1
Cayton, H., N.M. Haddad, K. Gross, S.E. Diamond, and L. Ries. 2015. Do growing degree days predict phenology across butterfly species? Ecology 96:1473-1479. DOI: 10.1890/15-0131.1
Cayton, H., N.M. Haddad, B. Ball, E. Henry, and E. Aschehoug. 2015. Habitat restoration as a recovery tool for a disturbance-dependent butterfly, the endangered St. Francis’ Satyr. Pages 147-159 in Daniels, J.C. (editor) Butterfly Conservation in North America. DOI: 10.1007/978-94-017-9852-5
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. DOI: 10.1126/sciadv.1500052
Henry, E.H., N.M. Haddad, J. Wilson, P. Hughes, and B. Gardner. 2015. Point-count methods to monitor butterfly populations when traditional methods fail: a case study with Miami blue butterfly. Journal of Insect Conservation 19:519-529. DOI: 10.1007/s10841-015-9773-6
Haddad, N.M. 2015. Conservation and restoration for the endangered St. Francis’ Satyr. News of the Lepidopterists’ Society 57:33-35. [PDF reprint]
Diamond, S.E., R.R. Dunn, S.D. Frank, N.M. Haddad, and R.A. Martin. 2015. Shared and unique responses of insects to the interaction of urbanization and background climate. Current Opinion in Insect Science 11:71-77. DOI: 10.1016/j.cois.2015.10.001
2014
Breckheimer, I, N.M. Haddad, W.F. Morris, A.M. Trainor, W.R. Fields, R.T. Jobe, B.R. Hudgens, A. Moody, and J.R. Walters. 2014. Defining and evaluating the umbrella species concept for conserving and restoring landscape connectivity. Conservation Biology 28:1584-1593. DOI: 10.1111/cobi.12362
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. DOI: 10.1073/pnas.1308968111
Resasco, J. N.M. Haddad, J.L. Orrock, D. Shoemaker, L.A. Bruvig, E.I. Damschen, J.J. Tewksbury, and D.J. Levey. 2014. Landscape corridors can increase invasion by an exotic species and reduce diversity of native species. Ecology 95:233-239. DOI: 10.1890/14-0169.1
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, and A.J. Weldon. 2014. Potential negative ecological effects of corridors. Conservation Biology 28:1178-1187. DOI: 10.1111/cobi.12323
Diamond, S.E., H. Cayton, T. Wepprich, C.N. Jenkins, R.R. Dunn, N.M. Haddad, L. Ries. 2014. Unexpected phenological responses of butterflies to the interaction of urbanization and geographic temperature. Ecology 95:2613-2621. DOI: 10.1890/13-1848.1
Adrion, J.R., A. Kousathanas, M. Pascual, H.J. Burrack, N.M. Haddad, A.O. Bergland, H. Machado, T.B. Sackton, T.A. Schlenke, M. Watada, D. Wegmann, and N.D. Singh. 2014. Drosophila suzukii: the genetic footprint of a recent, world-wide invasion. Molecular Biology and Evolution 31:3148-3163. DOI: 10.1093/molbev/msu246
2013
Wilson, J.W., J.O. Sexton, R.T. Jobe, and N.M. Haddad. 2013. The relative contribution of terrain, land cover, and vegetation structure indices to species distribution models. Biological Conservation 164:170–176. DOI: 10.1016/j.biocon.2013.04.021
Mata, T.M., N.M. Haddad, and M. Holyoak. 2013. How invader traits interact with resident communities and resource availability to determine invasion success. Oikos 122: 149–160. DOI: 10.1111/j.1600-0706.2012.20401.x
2012
Haddad, N.M. 2012. Connecting ecology and conservation through experiment. Nature Methods 794-795. DOI: 10.1038/nmeth.2107
Dinnage, R., M.W. Cadotte, N.M. Haddad, G.M. Crutsinger, and D. Tilman. 2012. Diversity of plant evolutionary lineages promotes arthropod diversity. Ecology Letters 15:1308-1317. DOI: 10.1111/j.1461-0248.2012.01854.x
Hudgens, B.R., W.F. Morris, N.M. Haddad. W. Fields, J. Wilson, D.C. Kuefler, and R.T. Jobe. 2012. How complex do models need to be to predict dispersal of threatened species through matrix habitats? Ecological Applications 22:1701-1710. DOI: 10.1890/11-1048.1
Milko, L.V., N.M. Haddad, and S.L. Lance. 2012. Dispersal via stream corridors structures populations of the endangered St. Francis’ satyr butterfly (Neonympha mitchellii francisci). Journal of Insect Conservation 16:263-273. DOI: 10.1007/s10841-011-9413-8
2011
Leidner, A.K. and N.M. Haddad. 2011. Combining measures of dispersal measures to identify conservation strategies in fragmented landscapes. Conservation Biology 25:1022-1031. DOI: 10.1111/j.1523-1739.2011.01720.x
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. DOI: 10.1890/10-1072.1
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. DOI: 10.1890/10-1116.1
Haddad, N.M., G.M. Crutsinger, K. Gross, J. Haarstad, and D. Tilman. 2011. Plant diversity and the stability of foodwebs. Ecology Letters 14:42-46. DOI: 10.1111/j.1461-0248.2010.01548.x
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. DOI: 10.1017/CBO9780511842399
2010
Bartel, R.A., N.M. Haddad, J.P. Wright. 2010. Ecosystem engineers maintain rare species and increase biodiversity. Oikos 119:883-890. DOI: 10.1111/j.1600-0706.2009.18080.x
Krosby, M., J. Tewksbury, N.M. Haddad, and J. Hoesktra. 2010. Ecological connectivity for a changing climate. Conservation Biology 24:1686-1689. DOI: 10.1111/j.1523-1739.2010.01585.x
Kuefler, D., B. Hudgens, N.M. Haddad, W.F. Morris, and N. Thurgate. 2010. The conflicting role of matrix habitats as conduits and barriers for dispersal. Ecology 91:944-950. DOI: 10.1890/09-0614.1
Leidner, A.K. and N.M. Haddad. 2010. Natural, not urban, barriers limit dispersal of a coastal endemic butterfly. Conservation Genetics 11:2311-2320. DOI: 10.1007/s10592-010-0117-5
Leidner, A.K., Haddad, N.M., and Lovejoy, T.E. 2010. Does tropical forest fragmentation increase long-term variability of butterfly communities? PLoS ONE 5(3):e9534. DOI: 10.1371/journal.pone.0009534
2009
Brudvig, L.A., E.I. Damschen, J.J. Tewksbury, N.M. Haddad, and D.J. Levey. 2009. Landscape connectivity promotes plant biodiversity spillover into non-target habitats. Proceedings of the National Academy of Sciences 106:9328-9332. DOI: 10.1073/pnas.0809658106
Haddad, N.M., G.M. Crutsinger, K. Gross, J. Haarstad, J.M.H. Knops, and D. Tilman. 2009. Plant species loss decreases arthropod diversity and shifts trophic structure. Ecology Letters 12:1029-1039. DOI: 10.1111/j.1461-0248.2009.01356.x
Haddad, N.M. 2009. Principles of reserve design. Pages 529-537 in S. Levin, editor, Princeton Guide to Ecology. Princeton University Press, New Jersey. DOI: 10.1515/9781400833023
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. DOI: 10.1656/058.008.0412
2008
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. DOI: 10.1073/pnas.0802037105
Haddad N.M. 2008. Finding the corridor more traveled. Proceedings of the National Academy of Sciences 105:19569-19570. DOI: 10.1073/pnas.0810867106
Haddad, N.M., B. Hudgens, C. Damiani, K. Gross, D. Kuefler, and K. Pollock. 2008. Determining optimal monitoring for rare butterfly populations. Conservation Biology 22:929-940. DOI: 10.1111/j.1523-1739.2008.00932.x
Haddad, N.M., M. Holyoak, T.M. Mata, K.F. Davies, B.A. Melbourne, and K. Preston. 2008. Species’ traits predict the effects of disturbance and productivity on diversity. Ecology Letters 11:348-356. DOI: 10.1111/j.1461-0248.2007.01149.x
Kuefler, D., N.M. Haddad, S. Hall, B. Hudgens, B. Bartel, and E. Hoffman. 2008. Distribution, population structure, and habitat use of the endangered St. Francis’ satyr butterfly, Neonympha mitchellii francisci. American Midland Naturalist 159:298-320. DOI: 10.1674/0003-0031
2007
Gross, K., E.J. Kalendra, B.R. Hudgens, and N.M. Haddad. 2007. Robustness and uncertainty in estimates of butterfly abundance from transect counts. Population Ecology 49:191-200. DOI: 10.1007/s10144-007-0034-8
2006
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. DOI: 10.1126/science.1130098
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. DOI: 10.1017/CBO9780511754821
Kuefler, D. and N.M. Haddad. 2006. Local versus landscape determinants of butterfly movement behaviors. Ecography 29:549-560. DOI: 10.1111/j.0906-7590.2006.04574.x
2005
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. DOI:10.1644/1545-1542
Damschen, E.I., K.M. Rosenfeld, M. Wyer, D. Murphy-Medley, T.R. Wentworth, and N.M. Haddad. 2005. Visibility matters: increasing knowledge of women’s contributions to ecology. Frontiers in Ecology and the Environment 3:212-219. DOI: 10.1890/1540-9295
Haddad, N.M. 2005. Butterflies of the Savannah River Site. Pp. 175-184. In J. Kilgo and J. Blake, eds, Ecology and Management of a Forested Landscape, Island Press, Washington, DC. View at Princeton University Press
Haddad, N.M. and J.J. Tewksbury. 2005. Low quality habitat corridors as movement conduits for two butterfly species. Ecological Applications 15:250-257. DOI: 10.1890/03-5327
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. DOI: 10.1126/science.1111479
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. DOI: science.310.5749.779
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. DOI: 10.1890/04-0913
2003
Bradley, K.L., E.I. Damschen, L.M. Young, D. Kuefler, S. Went, G. Wray, N.M. Haddad, J.M.H. Knops, and S.M. Louda. 2003. Spatial heterogeneity, not visitation bias, dominates variation in herbivory. Ecology 84:2214-2221. DOI: 10.1890/02-3082
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. DOI: 10.1890/0012-9658
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. DOI: 10.1086/374343
2002
Haddad, N.M., D. Tilman, and J.M.H. Knops. 2002. Long-term oscillations in grassland productivity induced by drought. Ecology Letters 5:110-120. DOI: 10.1046/j.1461-0248.2002.00293.x
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. DOI: 10.1017/CBO9780511613654
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. Outstanding Paper Award in Landscape Ecology. DOI: 10.1073/pnas.202242699
2001
Haddad, N.M., D. Tilman, J. Haarstad, M. Ritchie, and J. Knops. 2001. Contrasting effects of plant richness and composition on insect communities: a field experiment. The American Naturalist 158:17-35. DOI: 10.1086/320866
2000
Haddad, N.M. 2000. Corridor length and patch colonization by a butterfly, Junonia coenia. Conservation Biology 14:738-745. DOI: 10.1046/j.1523-1739.2000.99041.x
Haddad, N.M., D.K. Rosenberg, and B.R. Noon. 2000. On experimentation and the study of corridors. Conservation Biology 14:1543-1545. View on JSTOR
Haddad, N.M., J. Haarstad, and D. Tilman. 2000. The effects of long-term nutrient loading on grassland insect communities. Oecologia 124:73-84. DOI: 10.1007/s004420050026
Haddad, N.M. and W.M. Hicks. 2000. Host pubescence and the behavior and performance of a butterfly, Papilio troilus (Lepidoptera). Environmental Entomology 29:299-303. DOI: 10.1093/ee/29.2.299
1999
Haddad, N.M. 1999. Corridor use predicted from behaviors at habitat boundaries. The American Naturalist 153:215-227. DOI: 10.1086/303163
Haddad, N.M. 1999. Corridor and distance effects on interpatch movements: a landscape experiment with butterflies. Ecological Applications 9:612-622. DOI: 10.1890/1051-0761
Haddad, N.M. and K. Baum. 1999. An experimental test of corridor effects on butterfly densities. Ecological Applications 9:623-633. DOI: 10.1890/1051-0761
Knops, J.M.H., D. Tilman, N.M. Haddad, S. Naeem, C.E. Mitchell, J. Haarstad, M.E. Ritchie, K.M. Howe, P.B. Reich, E. Siemann, and J. Groth. 1999. Cascading effects of plant diversity on invasions, diseases, and insects. Ecology Letters 2:286-293. DOI: 10.1046/j.1461-0248.1999.00083.x
pre-1999
Sisk, T.D., N.M. Haddad, and P.R. Ehrlich. 1997. Bird assemblages in patchy woodlands: modeling the effects of edge and matrix habitats. Ecological Applications 7:1170-1180. DOI: 10.1890/1051-0761
Austin, G.T., N.M. Haddad, C.A. Mendez, A.E. Launer, and P.R. Ehrlich. 1996. Annotated checklist of the butterflies of the Tikal National Park area of Guatemala. Tropical Lepidoptera 7:21-37.
Mendez, C.A., T.D. Sisk, and N.M. Haddad. 1995. Beyond birds: multitaxonomic monitoring programs provide a broad measure of tropical diversity. Pages 451-456 in J.A. Bissonette and P.R. Krausman, eds. Integrating people and wildlife for a sustainable future. Proceedings of the First International Wildlife Management Congress. The Wildlife Society, Bethesda, MD.
Pulliam, H.R. and N.M. Haddad. 1994. Human population growth and the carrying capacity concept. Bulletin of the Ecological Society of America. 75:141-157.
Daily, G.C., P.R. Ehrlich, and N.M. Haddad. 1993. Double keystone bird in a keystone species complex. Proceedings of the National Academy of Sciences 90:592-594. DOI: 10.1073/pnas.90.2.592
