Interdisciplinary PhD in Molecular Biosciences

Dr. Jeffrey L. Walck - Publications

HAWKINS, T.S., J.L. WALCK, & S.N. HIDAYATI. Seed ecology of Lindera melissifolia (Lauraceae) as it relates to rarity of the species. Journal of the Torrey Botanical Society, accepted.

WALCK, J.L., S.N. HIDAYATI, K.W. DIXON, K. THOMPSON & P. POSCHLOD. 2011. Climate change and plant regeneration from seeds. Global Change Biology 17: 2145-2161.

Walck, J.L., M.S. Cofer & S.N. Hidayati. 2010. Understanding the germination of bulbils from an ecological perspective: a case study on Chinese yam ( Dioscorea polystachya). Annals of Botany, doi: 10.1093/aob/mcq189.

Hidayati, S.N., J.L. Walck. & J. Taylor. 2010. Seed germination ecophysiology of two western North American species of Sambucus (Caprifoliaceae sensu lato), and comparisons with eastern North American and European congeners. Plant Species Biology 25: 203-213.

Walck, J.L. & K.W. Dixon. 2009. Time to future-proof plants in storage. Nature 462: 721.

Kim, J.H., J.L. Walck. S.N. Hidayati, D.J. Merritt & K.W. Dixon. 2009. Germinability of seeds stored in capsules on plants of two myrtaceous shrubs: differences among age cohorts and between species. Australian Journal of Botany 57: 495-501.

Walck, J.L., C.C. Baskin, S.N. Hidayati & J.M. Baskin. 2008. Comparison of seed germination of native and non-native winter annual Apiaceae in North America, with particular focus on Cyclospermum leptophyllum naturalized from South America. Plant Species Biology 23: 33-42.

Cofer, M.S., J.L. Walck.& S.N. Hidayati. 2008. Species richness and exotic species invasion in middle Tennessee cedar glades in relation to abiotic and biotic factors. Journal of the Torrey Botanical Society 135: 540-555.

Fitch, E.A., J.L. Walck.& S.N. Hidayati. 2007. Agroecosystem management for rare species of Paysonia (Brassicaceae): integrating their seed ecology and life cycle with cropping regimes in a changing climate. American Journal of Botany 94: 102-110.

Fitch, E.A., J.L. Walck.& S.N. Hidayati. 2007. Germinating seeds of Lesquerella perforata and stonensis: substrate effects and mucilage production. Native Plants Journal 8: 4-10.

Fitch, E.A., J.L. Walck.& S.N. Hidayati. 2007. Temporal fulfilment of the light requirement for seed germination: an example of its use in management of rare species. Pp. 365-373 in Seeds: Biology, Development and Ecology. Edited by S.W. Adkins, S.E. Ashmore & S.C. Navie. CAB International, Wallingford, UK.

Walck, J.L. & S.N. Hidayati. 2007. Ombrohydrochory and its relationship to seed dispersal and germination strategies in two temperate North American Oenothera species (Onagraceae). International Journal of Plant Sciences 168: 1279-1290.

Thompson, J.N., J.L. Walck.& S.N. Hidayati. 2006. Microhabitat requirements of the federally endangered Dalea foliosa, with recommendations on establishment of new populations. Castanea 71: 94-104.

Baskin, J.M., S.N. Hidayati, C.C. Baskin, J.L. Walck. Z.-Y. Huang & C.-T. Chien. 2006. Evolutionary considerations of the presence of both morphophysiological and physiological seed dormancy in the highly advanced euasterids II order Dipsacales. Seed Science Research 16: 233-242.

Karlsson, L.M., S.N. Hidayati, J.L. Walck.& P. Milberg. 2005. Complex combination of seed dormancy and seedling development determine emergence of Viburnum tinus (Caprifoliaceae). Annals of Botany 95: 323-330.

Estes, L.D. & J.L. Walck. 2005. The vascular flora of Rattlesnake Falls: a potential state natural area on the Western Highland Rim Escarpment in Tennessee. Sida 21: 1753-1780.

Walck, J.L., J.M. Baskin, C.C. Baskin & S.N. Hidayati. 2005. Defining transient and persistent seed banks in species with pronounced seasonal dormancy and germination patterns. Seed Science Research 15: 189-196.

Myers, B.R., J.L. Walck.& K.E. Blum. 2004. Vegetation change in a former chestnut stand on the Cumberland Plateau of Tennessee during an 80-year period (1921-2000). Castanea 69: 81-91.

Walck, J.L. & S.N. Hidayati. 2004. Germination ecophysiology of the western North American species Osmorhiza depauperata (Apiaceae): implications for preadaptation and phylogenetic niche conservatism in seed dormancy evolution. Seed Science Research 14: 387-394.

Walck, J.L. & S.N. Hidayati. 2004. Differences in light and temperature responses determine autumn versus spring germination for seeds of Schoenolirion croceum. Canadian Journal of Botany 82: 1429-1437.

Welch, L., J.L. Walck.& K.E. Blum. 2004. Assessment of species for landscape management of archaeological sites in middle Tennessee. Journal of the Tennessee Academy of Science 79: 13-17.

Walck, J.L., S.N. Hidayati & N. Okagami. 2002. Seed germination ecophysiology of the Asian species Osmorhiza aristata (Apiaceae): comparison with its North American congeners and implications for evolution of types of dormancy. American Journal of Botany 89: 829-835.

Walck, J.L., T.L. Hemmerly & S.N. Hidayati. 2002. The endangered Tennessee purple coneflower, Echinacea tennesseensis (Asteraceae): its ecology and conservation. Native Plants Journal 3: 54-64.

Wen, J., P.P. Lowry II, J.L. Walck.& K.-O. Yoo. 2002. Phylogenetic and biogeographic diversifications in Osmorhiza (Apiaceae). Annals of the Missouri Botanical Garden 89: 414-428.

Morris, L.L., J.L. Walck.& S.N. Hidayati. 2002. Growth and reproduction of the invasive Ligustrum sinense and native Forestiera ligustrina (Oleaceae): implications for the invasion and persistence of a non-native shrub. International Journal of Plant Sciences 163: 1001-1010.

Hidayati, S.N. & J.L. Walck. 2002. Contrasting seed germination patterns for intracontinental disjuncts of Heuchera (Saxifragaceae) in North America: the eastern temperate H. parviflora and the western montane H. cylindrica. Canadian Journal of Botany 80: 1185-1192.

Walck, J.L., J.M. Baskin & C.C. Baskin. 2001. Why is Solidago shortii narrowly endemic and S. altissima geographically widespread? A comprehensive comparative study of biological traits. Journal of Biogeography 28: 1221-1237.

Hidayati, S.N. & J.L. Walck. 2001. Rafflesia patma in the Pangandaran Nature Reserve, Java. Pp. 38-39 In J. Nais. Rafflesia of the world. Sabah Parks, Kota Kinabalu, Sabah, Malaysia.

Walck, J.L. 2000. Chromosome number of the sandstone rockhouse endemic Thalictrum mirabile (Ranunculaceae), and clarification of its endemism. Journal of the Kentucky Academy of Science 61: 62-63.

Hidayati, S.N., W. Meijer, J.M. Baskin & J.L. Walck. 2000. A contribution to the life history of the rare Indonesian holoparasite Rafflesia patma (Rafflesiaceae). Biotropica 32: 408-414.

Walck, J.L., J.M. Baskin & C.C. Baskin. 2000. Increased sensitivity to green light during transition from conditional dormancy to nondormancy in seeds of three species of Solidago (Asteraceae). Seed Science Research 10: 495-499.

Baskin, J.M., J.L. Walck. C.C. Baskin & D.E. Buchele. 2000. Ecology and conservation biology of the endangered plant species Solidago shortii (Asteraceae). Native Plants Journal 1: 35-41.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1999. Effects of competition from introduced plants on establishment, survival, growth and reproduction of the rare plant S olidago shortii (Asteraceae). Biological Conservation 88: 213-219.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1999. Ecology of the endangered species Solidago shortii. VII. Survivorship and flowering, and comparison with common,geographically-widespread Solidago species. Journal of the Torrey Botanical Society 126: 124-132.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1999. Ecology of the endangered species Solidago shortii. VI. Effects of habitat type, leaf litter, and soil type on seed germination. Journal of the Torrey Botanical Society 126: 117-123.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1999. Relative competitive abilities and growth characteristics of a narrowly endemic and a geographically widespread Solidago species (Asteraceae). American Journal of Botany 86: 820-828.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1999. Roles of succession, light, nutrients and disturbance on population vigor and maintenance of the rare plant Solidago shortii (Asteraceae). Plant Ecology 145: 133-147.

Walck, J.L., C.C. Baskin & J.M. Baskin. 1999. Seeds of Thalictrum mirabile (Ranunculaceae) require cold stratification for loss of nondeep simple morphophysiological dormancy. Canadian Journal of Botany 77: 1769-1776.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1998. A comparative study of the seed germination biology of a narrow endemic and two geographically-widespread species of Solidago (Asteraceae). 6. Seed bank. Seed Science Research 8: 65-74.

Walck, J.L., C.C. Baskin & J.M. Baskin. 1997. Comparative achene germination requirements of the rockhouse endemic Ageratina luciae-brauniae and its widespread close relative A. altissima. American Midland Naturalist 137: 1-12.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1997. A comparative study of the seed germination biology of a narrow endemic and two geographically-widespread species of Solidago (Asteraceae). 5. Effect of dry storage on after-ripening and survivorship. Seed Science Research 7: 311-318.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1997. A comparative study of the seed germination biology of a narrow endemic and two geographically-widespread species of Solidago (Asteraceae). 4. Role of soil moisture in regulating germination. Seed Science Research 7: 303-309.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1997. A comparative study of the seed germination biology of a narrow endemic and two geographically-widespread species of Solidago (Asteraceae). 3. Photoecology of germination. Seed Science Research 7: 293-301.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1997. A comparative study of the seed germination biology of a narrow endemic and two geographically-widespread species of Solidago (Asteraceae). 2. Germination responses of buried seeds in relation to seasonal temperature cycles. Seed Science Research 7: 209-220.

Walck, J.L., J.M. Baskin & C.C. Baskin. 1997. A comparative study of the seed germination biology of a narrow endemic and two geographically-widespread species of Solidago (Asteraceae). 1. Germination phenology and effect of cold stratification on germination. Seed Science Research 7: 47-58.

Baskin, J.M, K.M. Snyder, J.L. Walck.& C.C. Baskin. 1997. The comparative autecology of endemic, globally-rare, and geographically-widespread, common plant species: three case studies. Southwestern Naturalist 42: 384-399.

Walck, J.L. 1996. Distribution, life forms, taxonomic categories, and habitats of the endangered and threatened vascular plants in Pennsylvania: a summary. Bartonia No. 59: 49-54.

Walck, J.L., J.M. Baskin, C.C. Baskin & S.W. Francis. 1996. Sandstone rockhouses of the eastern United States, with particular reference to the ecology and evolution of the endemic plant taxa. Botanical Review 62: 311-362.

Klotz, L.H. & J.L. Walck. 1993. Rare vascular plants associated with limestone in southwestern Franklin County, Pennsylvania. Bartonia, Supplement to No. 57: 16-41.

Walck, J.L. 1994. A contribution to the ecological life history of Senecio antennariifolius. Castanea 59: 1-11.

Klotz, L.H. & J.L. Walck. 1990. Pennsylvania records of large-leaved waterleaf Hydrophyllum macrophyllum, Hydrophyllaceae). Bartonia No. 56: 29-33.

Walck, J.L. & T.L. Smith. 1988. Upright primrose-willow ( Ludwigia decurrens, Onagraceae) in Pennsylvania. Bartonia No. 54: 24-25.

Walck, J.L. 1987. Shale barren ragwort ( Senecio antennariifolius, Asteraceae) in the Great Valley, Franklin County, Pennsylvania. Bartonia No. 53: 13-14.