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About Institutes Public Relations Technology Transfer Students\International Information Center (Library) Administration
שלח באימייל הדפס
Name: Eugene David Ungar, Ph.D. (Retiree)
Units: Plant SciencesNatural Resources
Research Interests / Job description  
Tel:  03-9683411
Email:    eugene@volcani.agri.gov.il
Office location:Plant Sciences Building; Field Crops Wing; Floor 2; Room 216
Address:Department of Agronomy and Natural Resources
Institute of Plant Sciences
Agricultural Research Organization - the Volcani Center
P.O.Box 6, Bet Dagan
ISRAEL 50250

Research Interests / Job description
Grazing systems


 Cattle on rangeThe effect of climate change on the carrying capacity of Israel's grazing lands
 Sheep grazingStudy of the plant-animal interface, including intake and grazing behaviour of ruminants
 Cow wearing acoustic monitorDevelopment of video and acoustic methodologies to study the plant-animal interface [acoustic monitoring]
 Semiarid rangeland in northern NegevStudy of the primary production of mediterranean and semiarid rangelands
 Herd routes across semiarid landscape 

Study of the spatial heterogeneity of rangelands and their utilization using GPS and GIS tools [popular article]

 Beef cow on mediterranean rangeland 

Analysis of the production efficiency of rangeland-based beef cattle operations

Recent Projects

The effect of climate change on the carrying capacity of Israel's grazing lands. Chief Scientist, Israel Ministry of Agriculture.

Implementation of advanced tools for the understanding of the spatial pattern of utilization of hilly rangelands by sheep grazing under traditional management and its effect on the vegetation. Israel Rangelands Board, Israel Ministry of Agriculture.

Biodiversity patterns and processes in water-limited ecosystems: a unified approach. Israel Science Foundation.

Goats for maximal efficiency of brush control. BARD (US - Israel Binational Agricultural Research and Development Fund).

Identification of primary management factors that determine efficiency of production in the beef cattle herd at pasture. Chief Scientist, Israel Ministry of Agriculture.

Towards Sustainability of Dryland Afforestation - factors limiting the recruitment of the Yatir Pinus halepensis Forest. USAID-MERC.

Study of the behaviour of beef cattle on rangeland using activity sensors and GPS for the improved management of herds and the landscape. Chief Scientist, Israel Ministry of Agriculture.

Development of a model for beef cattle production on rangeland that aims for profitability and sustainability. Israel Rangelands Board, Israel Ministry of Agriculture.

A program for the increase of beef cattle production on mediterranean woodland. Israel Rangelands Board, Israel Ministry of Agriculture.


Articles in reviewed journals

Paz-kagan, T., Alexandroff, V., Ungar, E.D. (2023) Detection of goat herding impact on vegetation cover change using multi-season, multi-herd tracking and satellite imagery. Science of the Total Environment (accepted)

Navon, S., Kigel, J., Dudai, N., Knaanie, A.,Glasser, T.A., Shachter, A., Ungar, E.D. (2019) Volatiles and tannins in Pistacia lentiscus and their role in browsing behavior of goats (Capra hircus). Journal of Chemical Ecology (accepted).

Ungar, E.D. (2019) Perspectives on the concept of rangeland carrying capacity, and their exploration by means of Noy-Meir's two-function model. Agricultural Systems 173: 403-413.

Seligman, N.G., Ungar, E.D., Perevolotsky, A., Henkin, Z. (2019) An assessment of grazing management options for Mediterranean grasslands using Noy-Meir's model of system dynamics parameterized from a long-term field trial. The Journal of Agricultural Science 156:1205-1215.

Ungar, E.D., Nevo, Y., Baram, H., Arieli, A. (2018) Evaluation of the IceTag leg sensor and its derivative models to predict behaviour, using beef cattle on rangeland. Journal of Neuroscience Methods 300: 127-137.

Landau, S.Y., Dvash, L., Yehuda, Y., Muklada, H., Peleg, G., Henkin, Z., Voet, H., Ungar, E.D. (2018) Impact of animal density on cattle nutrition in dry Mediterranean rangelands: a faecal NIRS-aided study. Animal 12:265-274.
DOI: http://dx.doi.org/10.1017/S1751731117001422

Schoenbaum, I., Kigel, J., Ungar, E.D., Dolev, A., Henkin, Z. (2017) Spatial and temporal activity of cattle grazing in Mediterranean oak woodland. Applied Animal Behaviour Science 187:45–53.
DOI: http://dx.doi.org/10.1016/j.applanim.2016.11.015

Arviv, A., Muklada, H., Kigel, J., Voet, H., Glasser, T., Dvash, L., Ungar, E.D. and Landau, S.Y. (2016) Targeted grazing of milk thistle (Silybum marianum) and Syrian thistle (Notobasis syriaca) by goats: preference following preconditioning, generational transfer, and toxicity. Applied Animal Behaviour Science accepted.

Agra, H., Ne'eman, G., Shachak, M., Segoli, M., Gabay, O., Perevolotsky, A., Arnon, A., Boeken, B., Groner, E., Walczak, M., Shkedy, Y., Cohen, S. and Ungar, E.D. (2015) Canopy structure of woody landscape modulators determines herbaceous species richness along a rainfall gradient. Plant Ecology 216:1511-1522.

Landau, S.Y., Dvash, L., Roudman, M., Muklada, H., Barkai, D., Yehuda, Y. and Ungar, E.D. (2016) Faecal near-IR spectroscopy to determine the nutritional value of diets consumed by beef cattle in east Mediterranean rangelands. Animal 10(2): 192-202.
DOI: http://dx.doi.org/10.1017/S175173111500169X

Henkin, Z., Ungar, E.D., Perevolotsky, A., Gutman, M., Yehuda, Y., Dolev, A., Landau, S.Y., Sternberg, M. and Seligman, N.G. (2015) Long-term trade-offs among herbage growth, animal production, and supplementary feeding in heavily grazed Mediterranean grassland. Rangeland Ecology and Management 68:332-340.

Sternberg, M., Golodets, C., Gutman, M., Perevolotsky, A., Kigel, J., Ungar, E.D. and Henkin, Z. (2015) Testing the limits of resistance: a 19-yr study of Mediterranean grassland response to grazing regimes. Global Change Biology 21:1939-1950.
DOI: http://dx.doi.org/10.1111/gcb.12866

Golodets, C., Sternberg, M., Kigel, J., Boeken, B., Henkin, Z., Seligman, N.G. and Ungar, E.D. (2015) Climate change scenarios of herbaceous production along an aridity gradient: vulnerability increases with aridity. Oecologia 177:971-979.
DOI: http://dx.doi.org/10.1007/s00442-015-3234-5

Villalba, J.J., Miller, J., Ungar, E.D., Landau, S.Y. and Glendinning, J. (2014) Ruminant self-medication against gastrointestinal nematodes: evidence, mechanism, and origins. Parasite 21:31 (10 pp.)
DOI: http://dx.doi.org/10.1051/parasite/2014032

Dolev, A., Henkin, Z., Brosh, A., Yehuda, Y., Ungar, E.D., Shabtay, A. and Aharoni, Y. (2014) Foraging behavior of two cattle breeds - a whole-year study: II. Spatial distribution by breed and season. Journal of Animal Science 92:758-766.
DOI: http://dx.doi.org/10.2527/jas.2013-6996

DeMalach, N., Kigel, J., Voet, H. and Ungar, E.D. (2014) Are semiarid shrubs resilient to drought and grazing? Differences and similarities among species and habitats in a long-term study. Journal of Arid Environments 102:1-8.
DOI: http://dx.doi.org/10.1016/j.jaridenv.2013.10.016

Delgado-Baquerizo, M., Maestre, F.T., Gallardo, A., Bowker, M.A., Wallenstein, M.D., Quero, J.L., Ochoa, V., Gozalo, B., García-Gómez, M., Soliveres, S., García-Palacios, P., Berdugo, M., Valencia, E., Escolar, C., Arredondo, T., Barraza-Zepeda, C., Bran, D., Carreira, J.A., Chaieb, M., Conceição, A.A., Derak, M., Eldridge, D.J., Escudero, A., Espinosa, C.I., Gaitán, J., Gatica, M.G., Gómez-González, S., Guzman, E., Gutiérrez, J.R., Florentino, A., Hepper, E., Hernández, R.M., Huber-Sannwald, E., Jankju, M., Liu, J., Mau, R.L., Miriti, M., Monerris, J., Naseri, K., Noumi, Z., Polo, V., Prina, A., Pucheta, E., Ramírez, E., Ramírez-Collantes, D.A., Romão, R., Tighe, M., Torres, D., Torres-Díaz, C., Ungar, E.D., Val, J., Wamiti, W., Wang, D. and Zaady, E. (2013) Decoupling of nutrient cycles as a function of aridity in global dryland soils. Nature 502: 672-676.
DOI: http://dx.doi.org/10.1038/nature12670

Amit, M., Cohen, I., Marcovics, A., Muklada, H., Glasser, T.A., Ungar, E.D. and Landau, S.Y. (2013) Self-medication with tannin-rich browse in goats infected with gastro-intestinal nematodes. Veterinary Parasitology 198:305-311.
DOI: http://dx.doi.org/10.1016/j.vetpar.2013.09.019

Aharoni, Y., Dolev, A., Henkin, Z., Yehuda, Y., Ezra, A., Ungar, E.D. and Shabtay, A. (2013) Foraging behavior of two cattle breeds, a whole-year study: I. Heat production, activity, and energy costs. Journal of Animal Science 91:1381-1390.
DOI: http://dx.doi.org/10.2527/jas.2012-5400

Golodets, C., Sternberg, M., Kigel, J., Boeken, B., Henkin, Z., Seligman, N.G. and Ungar, E.D. (2013) From desert to Mediterranean rangelands: Will increasing drought and inter-annual rainfall variability affect herbaceous annual primary productivity? Climatic Change 119:785-798.
DOI: http://dx.doi.org/10.1007/s10584-013-0758-8

Ungar, E.D., Rotenberg, E., Ras Yaseef, N., Cohen, S., Yakir, D. and Schiller, G. (2013) Transpiration and annual water balance of Aleppo pine in a semiarid region: implications for forest management. Forest Ecology and Management 298:39-51.
DOI: http://dx.doi.org/10.1016/j.foreco.2013.03.003

Giladi, I., Segoli, M., Ungar, E.D. (2013) Shrubs and herbaceous seed flow in a semiarid landscape: dual functioning of shrubs as trap and barrier. Journal of Ecology 101:97-106.
DOI: http://dx.doi.org/10.1111/1365-2745.12019

Navon, S., Mizrach, A., Hetzroni, A., Ungar, E.D. (2013) Automatic recognition of jaw movements in free-ranging cattle, goats and sheep, using acoustic monitoring. Biosystems Engineering 114:474-483.
DOI: http://dx.doi.org/10.1016/j.biosystemseng.2012.08.005

Orenstein, D.E., Groner, E., Argaman, E., Boeken, B., Preisler, Y., Shachak, M., Ungar, E.D. and Zaady, E. (2012) An Ecosystem Services Inventory: Lessons from the Northern Negev Long-Term Social Ecological Research (LTSER) Platform. Geography Research Forum 32:96-118.

Azaizeh, H., Halahleh, F., Abbas, N., Markovics, A., Muklada, H., Ungar, E.D., Landau, S.Y. (2012) Polyphenols from Pistacia lentiscus and Phillyrea latifolia impair the exsheathment of gastro-intestinal nematode larvae. Veterinary Parasitology 191:44- 50.
DOI: http://dx.doi.org/10.1016/j.vetpar.2012.08.016

Henkin, Z., Ungar, E.D., Dolev, A. (2012) Foraging behaviour of beef cattle in the hilly terrain of a Mediterranean grassland. The Rangeland Journal 34:163-172.
DOI: http://dx.doi.org/10.1071/RJ11096

Segoli, M., Ungar, E.D., Giladi, I., Arnon, A., Shachak, M. (2012) Untangling the positive and negative effects of shrubs on herbaceous vegetation in drylands. Landscape Ecology 27:899-910.
DOI: http://dx.doi.org/10.1007/s10980-012-9736-1

Segoli, M., Ungar, E.D., Shachak, M. (2012) Fine-scale spatial heterogeneity of resource modulation in semi-arid ‘islands of fertility'. Arid Land Research and Management 26:344-354.
DOI: http://dx.doi.org/10.1080/15324982.2012.694397

Markovics, A., Cohen, I., Muklada, H., Glasser, T.A., T.A. Dvash, L., Ungar, E.D., Azaizeh, H., Landau, S.Y. (2012) Consumption of Pistacia lentiscus foliage alleviates coccidiosis in young goats. Veterinary Parasitology 186:165-169.
DOI: http://dx.doi.org/10.1016/j.vetpar.2011.11.072

Glasser, T.A., Landau, S.Y., Ungar, E.D., Perevolotsky, A., Dvash, L., Muklada, H., Kababya, D. and Walker, J.W. (2012) Foraging selectivity of three goat breeds in a Mediterranean shrubland. Small Ruminant Research 102:7-12.
DOI: http://dx.doi.org/10.1016/j.smallrumres.2011.09.009

Stavi, I., Lavee, H., Ungar, E.D. and Sarah, P. (2012) Grazing-induced modification of a semi-arid rangeland from a two-phase to a three-phase mosaic geo-ecosystem. Arid Land Research and Management 26:79-83.
DOI: http://dx.doi.org/10.1080/15324982.2011.631691

Arnon, A., Svoray, T. and Ungar, E.D. (2011) The spatial dimension of pastoral herding: a case study from the northern Negev. Israel Journal of Ecology & Evolution 57:129-149.
DOI: http://dx.doi.org/10.1560/IJEE.57.1-2.129

Henkin, Z., Ungar, E.D., Dvash, L., Perevolotsky, A., Yehuda, Y., Sternberg, M., Voet H. and Landau S.Y. (2011) Effects of cattle grazing on herbage quality in a herbaceous Mediterranean rangeland. Grass and Forage Science 66:516-525.
DOI: http://dx.doi.org/10.1111/j.1365-2494.2011.00808.x

Stavi, I., Ungar, E.D., Lavee, H. and Sarah, P. (2011) Soil aggregate fraction 1-5 mm: An indicator for soil quality in rangelands. Journal of Arid Environments 75:1050-1055.
DOI: http://dx.doi.org/10.1016/j.jaridenv.2011.04.035

Ungar, E.D., Schoenbaum, I., Henkin, Z., Dolev, A., Yehuda, Y. and Brosh, A. (2011) Inference of the activity timeline of cattle foraging on a Mediterranean woodland using GPS and pedometry. Sensors 11:362-383.
DOI: http://dx.doi.org/10.3390/s110100362

Bachar, A., Al-Ashhab, A., Soares, M.I.M., Sklarz, M.Y., Angel, R., Ungar, E.D. and Gillor, O. (2010) Soil microbial abundance and diversity along a low precipitation gradient. Microbial Ecology 60:453-461.
DOI: http://dx.doi.org/10.1007/s00248-010-9727-1

Landau, S., Azaizeh, A., Muklada, H., Glasser, T., Ungar, E.D., Baram, H., Abbas, N., Markovics, A. (2010) Anthelmintic activity of Pistacia lentiscus foliage in two Middle Eastern breeds of goats differing in their propensity to consume tannin-rich browse. Veterinary Parasitology 173:280-286.
DOI: http://dx.doi.org/10.1016/j.vetpar.2010.07.006

Hanovice-Ziony, M., Gollop, N., Landau, S.Y., Ungar, E.D., Muklada, H., Glasser, T.A., Perevolotsky, A. and Walker, J.W. (2010) No major role for binding by salivary proteins as a defense against dietary tannins in Mediterranean goats. Journal of Chemical Ecology 36:736-743.
DOI: http://dx.doi.org/10.1007/s10886-010-9809-z

Stavi, I., Ungar, E.D., Lavee, H. and Sarah, P. (2010) Variability of soil aggregation in a hilly semi-arid rangeland. Journal of Arid Environments 74:946-953.
DOI: http://dx.doi.org/10.1016/j.jaridenv.2009.12.003

Schiller, G., Ungar, E.D., Cohen, S. and Herr, N. (2010) Water use by Tabor and Kermes oaks growing in their respective habitats in the lower Galilee region of Israel. Forest Ecology and Management 259:1018-1024.
DOI: http://dx.doi.org/10.1016/j.foreco.2009.12.008

Angel, R., Soares, M.I.M., Ungar, E.D. and Gillor, O. (2010) Biogeography of soil archaea and bacteria along a steep precipitation gradient. ISME Journal 4:553-563.
DOI: http://dx.doi.org/10.1038/ismej.2009.136

Brosh, A., Henkin, Z., Ungar, E.D., Dolev, A., Shabtay, A., Orlov, A. and Aharoni, Y. (2010) Energy cost of activities and locomotion of grazing cows: a repeated study in larger plots. Journal of Animal Science 88:315-323.
DOI: http://dx.doi.org/10.2527/jas.2009-2108

Ungar, E.D., Stavi, I., Lavee, H. and Sarah, P. (2010) Effects of livestock traffic on rock fragment movement on hillsides in a semiarid patchy rangeland. Land Degradation & Development 21:92-99.
DOI: http://dx.doi.org/10.1002/ldr.899

Stavi, I., Lavee, H., Ungar, E.D. and Sarah, P. (2009) Ecogeomorphic feedbacks in semiarid rangelands: A review. Pedosphere 19: 217-229.
DOI: http://dx.doi.org/10.1016/S1002-0160(09)60111-9

Stavi, I., Ungar, E.D., Lavee, H. and Sarah, P. (2009) Livestock modify ground surface microtopography and penetration resistance in a semi-arid shrubland. Arid Land Research and Management 23: 237-247.
DOI: http://dx.doi.org/10.1080/15324980903028371

Glasser, T.A., Ungar, E.D., Landau, S.Y., Perevolotsky, A., Muklada, H. and Walker, J.W. (2009) Breed and maternal effects on the intake of tannin-rich browse by juvenile domestic goats (Capra hircus). Applied Animal Behaviour Science 119: 71-77.
DOI: http://dx.doi.org/10.1016/j.applanim.2009.02.028

Segoli, M., Ungar, E.D. and Shachak, M. (2008) Shrubs enhance resilience of a semiarid ecosystem by engineering and regrowth. Ecohydrology 1: 330-339.
DOI: http://dx.doi.org/10.1002/eco.21

Stavi, I., Ungar, E.D., Lavee, H. and Sarah, P. (2008) Grazing-induced spatial variability of soil bulk density and content of moisture, organic carbon and calcium carbonate in a semi-arid rangeland. Catena 75: 288-296.
DOI: http://dx.doi.org/10.1016/j.catena.2008.07.007

Shachak, M., Boeken, B., Groner, E., Kadmon, R., Lubin, Y., Meron, E., Ne'eman, G., Perevolotsky, A., Shkedy, Y., Ungar, E.D. (2008) Woody species as landscape modulators and their effect on biodiversity patterns. Bioscience 58: 209-221.
DOI: http://dx.doi.org/10.1641/B580307

Glasser, T., Landau, S., Ungar, E.D., Perevolotsky, A., Dvash, L., Muklada, H., Kababya, D., Walker, J.W. (2008) A fecal NIRS-aided methodology to determine goat dietary composition in a Mediterranean shrubland. Journal of Animal Science 86: 1345-1356.
DOI: http://dx.doi.org/10.2527/jas.2006-817

Landau S., Giger-Reverdin, S, Rapetti, L., Dvash, L., Dorléans, M., Ungar, E.D. (2008) Data mining old digestibility trials for nutritional monitoring in confined goats with aids of fecal near infra-red spectrometry. Small Ruminant Research 77: 146-158.
DOI: http://dx.doi.org/10.1016/j.smallrumres.2008.03.010

Stavi, I., Ungar, E.D., Lavee, H. and Sarah, P. (2008) Surface microtopography and soil penetration resistance associated with shrub patches in a semiarid rangeland. Geomorphology 94: 69-78.
DOI: http://dx.doi.org/10.1016/j.geomorph.2007.05.008

Giladi, I., Segoli, M. and Ungar, E.D. (2007) The effect of shrubs on the seed rain of annuals in a semiarid landscape. Israel Journal of Plant Sciences 55: 83-92.
DOI: http://dx.doi.org/10.1560/IJPS.55.1.83

Arnon, A., Ungar, E.D., Svoray, T., Shachak, M., Blankman, J. and Perevolotsky, A. (2007) The application of remote sensing to study shrub-herbaceous relations at a high spatial resolution. Israel Journal of Plant Sciences 55: 73-82.
DOI: http://dx.doi.org/10.1560/IJPS.55.1.73

Landau, S., Schoenbaum, I., Barkai, D., Ungar, E.D., Genizi, A., Kigel, J. (2007) Grazing, mulching, and removal of wheat straw in a no-till system in a semi-arid environment. Australian Journal of Agricultural Research 58: 1-6.
DOI: http://dx.doi.org/10.1071/AR06422

Schiller, G., Cohen, S., Ungar, E.D., Y. Moshe and Herr, N. (2007) Estimating water use of sclerophyllous species under East-Mediterranean climate III. Tabor oak forest sap flow distribution and transpiration. Forest Ecology and Management 238: 147-155.
DOI: http://dx.doi.org/10.1016/j.foreco.2006.10.007

Aharon, H., Henkin, Z., Ungar, E.D., Kababya, D., Baram, H. and Perevolotsky, A. (2007) Foraging behaviour of the newly introduced Boer goat breed in a Mediterranean woodland: A research observation. Small Ruminant Research 69: 144-153.
DOI: http://dx.doi.org/10.1016/j.smallrumres.2006.01.004

Schiller, G., Shklar, G., Ungar, E.D., Al-Omari, A., Zyadin, A.F. and Korol, L. (2006) Genetic diversity assessment by random amplified polymorphic DNA of oaks: 3. Quercus calliprinos Webb. in Israel and Jordan. Israel Journal of Plant Sciences 54: 137-148.
DOI: http://dx.doi.org/10.1560/IJPS_54_2_137

Brosh, A., Henkin, Z., Ungar, E.D., Dolev, A., Orlov, A., Yehuda, Y. and Aharoni, Y. (2006) Energy cost of cows' grazing activity: Use of the heart rate method and the Global Positioning System for direct field estimation. Journal of Animal Science 84: 1951-1967.
DOI: http://dx.doi.org/10.2527/jas.2005-315

Griffiths, W.M., Alchanatis, V., Nitzan, R., Ostrovsky, V., Ben-Moshe, E., Yonatan, R., Brener, S., Baram, H., Genizi, A. and Ungar, E.D. (2006) A video and acoustic methodology to map bite placement at the patch scale. Applied Animal Behaviour Science 98: 196-215.
DOI: http://dx.doi.org/10.1016/j.applanim.2005.10.006

Ungar, E.D., Ravid, N., Zada, T., Ben-Moshe, E., Yonatan, R., Baram, H. and Genizi, A. (2006) The implications of compound chew-bite jaw movements for bite rate in grazing cattle. Applied Animal Behaviour Science 98: 183-195.
DOI: http://dx.doi.org/10.1016/j.applanim.2005.09.001

Ungar, E.D. and Rutter, S.M. (2006) Classifying cattle jaw movements: Comparing IGER Behaviour Recorder and acoustic techniques. Applied Animal Behaviour Science 98: 11-27.
DOI: http://dx.doi.org/10.1016/j.applanim.2005.08.011

Landau, S., Glasser, T., Muklada, H., Dvash, L., Perevolotsky, A., Ungar, E.D. and Walker, J.W. (2005) Fecal NIRS prediction of dietary protein percentage and in vitro dry matter digestibility in diets ingested by goats in Mediterranean scrubland. Small Ruminant Research 59: 251-263.
DOI: http://dx.doi.org/10.1016/j.smallrumres.2005.05.009

Henkin, Z., Gutman, M., Aharon, H., Perevolotsky, A., Ungar, E.D. and Seligman, N.G. (2005) Suitability of Mediterranean oak woodland for beef herd husbandry. Agriculture, Ecosystems and Environment 109: 255-261.
DOI: http://dx.doi.org/10.1016/j.agee.2005.03.004

Ungar, E.D., Henkin, Z., Gutman, M., Dolev, A., Genizi, A. and Ganskopp, D. (2005) Inference of animal activity from GPS collar data on free-ranging cattle. Rangeland Ecology and Management 58: 256-266.
DOI: http://dx.doi.org/10.2111/1551-5028(2005)58[256:IOAAFG]2.0.CO;2

Ungar, E.D., Seligman, N.G. and Noy-Meir, I. (2004) Grass grows, the cow eats: a simple grazing systems model with emergent properties. Journal of Biological Education 38: 178-182.
DOI: http://dx.doi.org/10.1080/00219266.2004.9655938

Schiller, G., Y. Moshe and Ungar, E.D. (2004) Transpiration of Cupressus sempervirens L. as influenced by canopy structure. Israel Journal of Plant Sciences 52: 9-19.
DOI: http://dx.doi.org/10.1560/TCGF-4UX6-YXCP-UXCP

Schiller, G., Ungar, E.D., Yosef, M., Cohen, S. and Cohen, Y. (2003) Estimating water use by sclerophyllous species under east Mediterranean climate II. The transpiration of Quercus calliprinos Webb. in relation to silvicultural treatments. Forest Ecology and Management 179: 483-495.
DOI: http://dx.doi.org/10.1016/S0378-1127(02)00536-4

Schiller, G., Ungar, E.D. and Cohen, Y. (2002) Estimating the water use of a sclerophyllous species under an East-Mediterranean climate. I. Response of transpiration of Phillyrea latifolia L. to site factors. Forest Ecology and Management 170: 117-126.
DOI: http://dx.doi.org/10.1016/S0378-1127(01)00785-X

Ungar, E.D. and Griffiths, W.M. (2002) The imprints created by cattle grazing short sequences of bites on continuous alfalfa swards. Applied Animal Behaviour Science 77: 1-12.
DOI: http://dx.doi.org/10.1016/S0168-1591(02)00021-7

Ungar, E.D. (2002) BokerTov: A record-keeping and analysis program for beef herds at pasture. Agronomy Journal 94: 493-500.
DOI: http://dx.doi.org/10.2134/agronj2002.4930

Ungar, E.D., Ravid, N. and Bruckental, I. (2001) Bite dimensions for cattle grazing herbage at low levels of depletion. Grass and Forage Science 56: 35-45.
DOI: http://dx.doi.org/10.1046/j.1365-2494.2001.00244.x

Sternberg, M., Gutman, M., Perevolotsky, A., Ungar, E.D. and Kigel, J. (2000) Vegetation response to grazing management in a Mediterranean herbaceous community: a functional group approach. Journal of Applied Ecology 37: 224-237.
DOI: http://dx.doi.org/10.1046/j.1365-2664.2000.00491.x

Schiller, G., Korol, L., Ungar, E.D., Zehavi, A. and Climent, M.J. (1999) Canary Islands pine (Pinus canariensis Chr. Sm. Ex Dc.) 1. Differentiation among native populations in their isoenzymes. Forest Genetics 6: 257-276.
URL: http://www.tuzvo.sk/files/fg/volumes/1999/FG06-4_257-276.pdf

Ungar, E.D. and Ravid, N. (1999) Bite horizons and dimensions for cattle grazing herbage to high levels of depletion. Grass and Forage Science 54: 357-364.
DOI: http://dx.doi.org/10.1046/j.1365-2494.1999.00188.x

Perevolotsky, A., Landau, S., Kababia, D. and Ungar, E.D. (1998) Diet selection in dairy goats grazing woody Mediterranean rangeland. Applied Animal Behaviour Science 57: 117-131.
DOI: http://dx.doi.org/10.1016/S0168-1591(97)00120-2

Ginguld, M., Perevolotsky, A. and Ungar, E.D. (1997) Living on the margins: livelihood strategies of Bedouin herd-owners in the Northern Negev, Israel. Human Ecology 25: 567-591.
DOI: http://dx.doi.org/10.1023/A:1021833907673

Ungar, E.D., Ravid, N., Genizi, A. and Methorst, R. (1997) Measurement error in the estimation of intake from herbage patches by non-fistulated heifers on apparently uniform swards. Annales de Zootechnie 46: 349-359.
DOI: http://dx.doi.org/10.1051/animres:19970406

Spharim, I. and Ungar, E.D. (1995) Morphological analysis in agricultural R&D: A technologist's approach to the definition and economic evaluation of technologies. R&D Management 25: 351-363.
DOI: http://dx.doi.org/10.1111/j.1467-9310.1995.tb01339.x

Laca, E.A., Ungar, E.D. and Demment, M.W. (1994) Mechanisms of handling time and intake rate of a large mammalian grazer. Applied Animal Behaviour Science 39: 3-19.
DOI: http://dx.doi.org/10.1016/0168-1591(94)90011-6

Ungar, E.D., Seligman, N.G. and Demment, M.W. (1992) Graphical analysis of sward depletion by grazing. Journal of Applied Ecology 29: 427-435.
URL: http://www.jstor.org/stable/2404511

Laca, E.A., Ungar, E.D., Seligman, N.G. and Demment, M.W. (1992) Effects of sward height and bulk density on bite dimensions of cattle grazing homogeneous swards. Grass and Forage Science 47: 91-102.
DOI: http://dx.doi.org/10.1111/j.1365-2494.1992.tb02251.x

Laca, E.A., Ungar, E.D., Seligman, N.G., Ramey, M.R. and Demment, M.W. (1992) An integrated methodology for studying short-term grazing behaviour of cattle. Grass and Forage Science 47: 81-90.
DOI: http://dx.doi.org/10.1111/j.1365-2494.1992.tb02250.x

Ungar, E.D., Kletter, E. and Genizi, A. (1992) Conservative response and stress-damage interactions in cotton reproductive development. Agronomy Journal 84: 382-386.
DOI: http://dx.doi.org/10.2134/agronj1992.00021962008400030006x

Ungar, E.D., Genizi, A. and Demment, M.W. (1991) Bite dimensions and herbage intake by cattle grazing short hand-constructed swards. Agronomy Journal 83: 973-978.
DOI: http://dx.doi.org/10.2134/agronj1991.00021962008300060010x

Ungar, E.D., Kletter, E. and Genizi, A. (1989) Early season development of floral buds in cotton. Agronomy Journal 81: 643-649.
DOI: http://dx.doi.org/10.2134/agronj1989.00021962008100040018x

Ungar, E.D. and Noy-Meir, I. (1988) Herbage intake in relation to availability and sward structure: grazing processes and optimal foraging. Journal of Applied Ecology 25: 1045-1062.
URL: http://www.jstor.org/stable/2403765

Ungar, E.D., Wallach, D. and Kletter, E. (1987) Cotton response to bud and boll removal. Agronomy Journal 79: 491-497.
DOI: http://dx.doi.org/10.2134/agronj1987.00021962007900030017x





Remote Sensing ARO 250117 Lectures:

Maxim Shoshani

Gil Sapir (from Maxim)

Noam Levin

David Helman

Ron Drori

Gilad Weil



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