Environmental Studies Program
Office: Dana 319 Phone: x5080 (off campus: 518-580-5080)
To view Josh Ness's website, please click here.
Focus: mutualistic and parasitic interactions between species, invasion ecology, landscape change, and community responses to climatic variation. Study systems include the temperate deciduous forests of New England and the Sonoran Desert of southern Arizona.
Courses taught at Skidmore
- Scribner Seminar for first year students: Life in the North Woods
- BI106: Diversity of Life
- ES205: Conservation and Use of Terrestrial Landscapes
- ES374, 375: Methods, Approaches and Case Studies in Environmental Sustainability
- BI339: Plant-Animal Interactions
- BI351: Biological Invasions: Exotic Species, Parasites and Epidemiology.
Environmental Science students performing summer research in the Sonoran Desert.
Scientific Publications and Presentations with Skidmore students as co-authors
- Ness J.H., M.A. Morales, E. Kenison, E. Leduc, P. Leipzig-Scott, E. Rollinson, B.J. Swimm and D. Von Allmen (2012) Reciprocally beneficial interactions between introduced plants and ants are induced by the presence of a third introduced species. Oikos 122: 695-704
- Ness J.H., E Rollinson and D Whitney (2011). Phylogenetic distances predict susceptibility to attack by natural enemies. Oikos 120: 1327-1334
- Ness JH and A Conine. (2011) Does mast gain influence mass loss? Poster Presentation. 2011 North American Benthological Society Annual Meeting
- Ness JH, E Rollinson and K Whitney (2010) Phylogenetic community structure influences among-species differences in susceptibility to attack by natural enemies. Poster presentation, 2010 Ecological Society of America Annual Meeting
- Ness J.H., D.F. Morin and I. Giladi (2009) Uncommon specialization in a mutualism between a temperate herbaceous plant guild and an ant: Are Aphaenogaster ants keystone mutualists? Oikos 118: 1793-1804
- Rollinson E and JH Ness (2009) Exotic plant species experience less herbivory than natives in a phylogenetically controlled survey. Poster presentation, 2009 Odum Conference: Understanding and managing biological invasions as dynamic processes: Integrating information across space and time.
- Rollinson, E and JH Ness (2009) Consequences of riparian invasion for in-stream litter processing. Poster presentation, 2009 North American Benthological Society Annual meeting
- Ness, J.H. and D.F. Morin. (2008) Forest edges and landscape history shape interactions between plants, seed-dispersing ants and seed predators. Biological Conservation 141: 838-847
- Ness JH, E Kenison, P Leipzig-Scott and MA Morales. (2008) Causes and consequences of stream bank invasions by Japanese knotweed. Oral presentation, 2008 Ecological Society of America Annual Meeting
- Kenison E, P Leipzig-Scott, JH Ness and C Gibson (2008) Linking stream chemistry to ecosystem processes. Poster presentation, 2008 North American Benthological Society Annual meeting
- Leipzig-Scott P, E Kenison and JH Ness (2008) Friendship is wasted on invasive Japanese knotweed. Poster presentation, 2008 Northeast Natural History Conference.
- Rollinson E, S Tsang and JH Ness (2008) Plant apparency and vulnerability to herbivory. Poster presentation, 2008 Northeast Natural History Conference.
- Taggart B, M Garfinkel and JH Ness (2008) Influences of leaf-litter quality and diversity on in-stream decomposition rates. Poster presentation. 2008 Northeast Natural History Conference.
- Ness, JH and D Morin. (2007) Is Aphaenogaster a keystone mutualist? Oral presentation, 2007 Ecological Society of America Annual Meeting
- Ness, JH, C Gibson, A Roehrig, L Siegwarth, L Bloomenthal, C Clark, S Fansler and W Cheng (2007) Comparison of leaf processing and macroinvertebrate colonization of invasive Japanese Knotweed and native Sugar Maple. Poster Presentation, 2007 North American Benthological Society Annual Meeting
- Ness J.H., K. Mooney and L. Lach. (2010) Ants as mutualists. Chapter 6 (pp 97-114) in (Lach L., C.L. Parr and K. Abbott, eds.) Ant Ecology. Oxford University Press, Oxford.
- Ness J.H., W.F. Morris and J.L. Bronstein (2009) For ant-protected plants, the best defense is a hungry offense. Ecology 90: 2823-2831
- Ness, J.H. (2006) A mutualism’s indirect costs: The most aggressive plant bodyguards also deter pollinators. Oikos 113: 506-514
- Ness, J.H., W.F. Morris & J.L. Bronstein (2006) Variation in mutualistic potential among ant species tending extrafloral nectaries of Ferocactus wislizeni. Ecology 87: 912-921
- Ness, J.H. & K. Bressmer (2005) Abiotic influences on the behavior of rodents, ants, and plants affect an ant-seed mutualism. Ecoscience 12: 76-81
- Morris, W.F., W.G. Wilson, J.L. Bronstein & J.H. Ness (2005) Environmental forcing and the temporal dynamics of a competitive guild of cactus-tending ants. Ecology 86: 3190-3199
- Holland, J.N., J.H. Ness, A. Boyle & J.L. Bronstein (2005) Mutualisms as consumer-resource interactions. Pp 17-33 In (P. Barbosa and I. Castellanos, eds.) Ecology of Predator – Prey Interactions. Oxford University Press, New York
- Ness, J.H., J.L. Bronstein, A.N. Andersen & J.N. Holland (2004) Ant body size predicts dispersal distance of ant-adapted seeds: implications of small-ant invasions. Ecology 85: 1244-1250
- Ness, J.H. (2004) Forest edges and fire ants alter the seed shadow of an ant-dispersed plant. Oecologia 138: 228-454
- Ness, J.H. & J.L. Bronstein (2004) The effects of invasive ants on prospective ant mutualists. Biological Invasions 6: 445-461
- Holland, J.N., R. Wyatt, J.L. Bronstein & J.H. Ness (2004) Relating the biology of flower-to-fruit survivorship to the ecology and evolution of fruit-to-flower ratios. Recent Research Developments in Plant Science 1: 75-84
- Ness, J.H. (2003) Catalpa bignonioides alters extrafloral nectar production after herbivory and attracts ant bodyguards. Oecologia 134: 210-218
- Ness, J.H. (2003) Contrasting exotic Solenopsis invicta and native Forelius pruinosus ants as mutualists with Catalpa bignonioides, a native plant. Ecological Entomology 28: 247-251
- Ness, J.H. & S. A. Foster (1999) Parasite mediated phenotype modifications in the threespine stickleback. Oikos 85: 127-134
- Windsor, D., J. Ness, L.D. Gomez & P.H. Jolivet (1999) Species of Aulacoscelis Duponchel and Chevrolat (Chrysomelidae) and Nomotus Gorham (Languriidae) feed on fronds of Central American cycads. The Coleopterist Bulletin 53: 217-231.