Associate Research Professor
Publication TagsGiraffa Camelopardalis Animals Strigiformes Demography Metapopulation Home Range Breeding Season Extinction Habitats Testing Demographic Statistics Spatial Variation Social Structure Methodology Calves Habitat Environmental Factors Terminology Subpopulation Crops Translocation Software Animal Rate Disturbance
Most Recent Papers
Socially Defined Subpopulations Reveal Demographic Variation in a Giraffe Metapopulation
Monica L. Bond, Barbara König, Arpat Ozgul, Damien R. Farine, Derek E. Lee, 2021, Journal of Wildlife Management on p. 920-931
Sociability increases survival of adult female giraffes
M. L. Bond, D. E. Lee, D. R. Farine, A. Ozgul, B. König, 2021, Proceedings of the Royal Society B: Biological Sciences
Projecting long-term impacts of a mortality event on vertebrates
Nadav Nur, Russell W. Bradley, Derek E. Lee, Pete Warzybok, Jaime Jahncke, 2021, Ecosphere
Spotted owls and forest fire
Derek E. Lee, 2020, Ecosphere
Zoe Muller, Derek E. Lee, Ciska P.J. Scheijen, Megan K.L. Strauss, Kerryn D. Carter, Francois Deacon, 2020, African Journal of Ecology on p. 159-171
Proximity to humans affects local social structure in a giraffe metapopulation
Monica L. Bond, Barbara König, Derek E. Lee, Arpat Ozgul, Damien R. Farine, 2020, Journal of Animal Ecology
Giraffe translocation population viability analysis
Derek E. Lee, Elmar Fienieg, Cock Van Oosterhout, Zoe Muller, Megan Strauss, Kerryn D. Carter, Ciska P.J. Scheijen, Francois Deacon, 2020, Endangered Species Research on p. 245-252
Fission–fusion dynamics of a megaherbivore are driven by ecological, anthropogenic, temporal, and social factors
Monica L. Bond, Derek E. Lee, Arpat Ozgul, Barbara König, 2019, Oecologia on p. 335-347
Correlates of home range sizes of giraffes, giraffa camelopardalis
Mara A. Knüsel, Derek E. Lee, Barbara König, Monica L. Bond, 2019, Animal Behaviour on p. 143-151
An automated program to find animals and crop photographs for individual recognition
Patrick Buehler, Bill Carroll, Ashish Bhatia, Vivek Gupta, Derek E. Lee, 2019, Ecological Informatics on p. 191-196
A computer-assisted system for photographic mark-recapture analysis
Douglas T. Bolger, Thomas A. Morrison, Bennet Vance, Derek Lee, Hany Farid, 2012, Methods in Ecology and Evolution on p. 813-822
Dynamics of breeding-season site occupancy of the California Spotted Owl in burned forests
Derek Lee, Monica L. Bond, Rodney B. Siegel, 2012, Condor on p. 792-802
Influence of fire and salvage logging on site occupancy of spotted owls in the San Bernardino and San Jacinto Mountains of Southern California
Derek E. Lee, Monica L. Bond, Mark I. Borchert, Richard Tanner, 2013, Journal of Wildlife Management on p. 1327-1341
Occupancy of California Spotted Owl sites following a large fire in the Sierra Nevada, California
Derek Lee, Monica L. Bond, 2015, Condor on p. 228-236
How many species of giraffe are there?
Fred B. Bercovitch, Philip S.M. Berry, Anne Dagg, Francois Deacon, John B. Doherty, Derek E. Lee, Frédéric Mineur, Zoe Muller, Rob Ogden, Russell Seymour, Bryan Shorrocks, Andy Tutchings, 2017, Current Biology on p. R136-R137
A multi-method approach to delineate and validate migratory corridors
Monica L. Bond, Curtis M. Bradley, Christian Kiffner, Thomas A. Morrison, Derek E. Lee, 2017, Landscape Ecology on p. 1705-1721
Spatial variation in giraffe demography: A test of 2 paradigms
Derek E. Lee, Monica L. Bond, Bernard M. Kissui, Yustina A. Kiwango, Douglas T. Bolger, 2016, Journal of Mammalogy on p. 1015-1025
Previous year's reproductive state affects Spotted Owl site occupancy and reproduction responses to natural and anthropogenic disturbances
Derek Lee, Monica L. Bond, 2015, Condor on p. 307-319
Diet and home-range size of California Spotted Owls in a burned forest
Monica L. Bond, Derek Lee, Rodney B. Siegel, Morgan W. Tingley, 2013, Western Birds on p. 114-126
Movements and source–sink dynamics of a Masai giraffe metapopulation
Derek E. Lee, Douglas T. Bolger, 2017, Population Ecology on p. 157-168
News Articles Featuring Derek Lee
Sep 30, 2021
Male giraffes have social connections beyond their own community
Nature is not the mechanical clinking of cogs, preordained by certain ecological laws. It is dynamic – animals and plants form complex and flexible relationships in their individual, contingent contexts. A new study revealing the differing sexual politics in giraffe society illustrates just that. The study shows that male giraffes are more socially connected than females.
Sep 27, 2021
Male giraffes are more socially connected than females
Although female giraffes have closer “friends” than male giraffes, male giraffes have more “acquaintances” than females, according to a new study by an international team that includes a Penn State biologist. The study demonstrates that giraffes form a complex multilevel society that is driven by differences in the social connections among individuals, which could have conservation implications for the endangered giraffes.
May 06, 2021
Whole-Genome Data Point to Four Species of Giraffe
The genome sequences of 51 giraffes from all over Africa contribute to the latest attempt in an ongoing pursuit to pin down a species number.
Feb 10, 2021
Friends matter: More sociable giraffes live longer
Adult female giraffes that group together with more of their peers live longer than less sociable individuals, according to a five-year study of giraffes in Tanzania.
Dec 10, 2020
Could spotted owls benefit from forest fires?
It may seem counterintuitive, but forest fires are actually beneficial to spotted owls, according to Penn State biologist Derek Lee.
Jun 09, 2020
Human presence weakens social relationships of wild giraffes
Living in close proximity to human settlements disturbs giraffe social networks, with animals having weaker bonds and fewer interactions with other giraffes, according to a new study by a team including a Penn State biologist.
Apr 26, 2020
Wildfires Can Reduce Biodiversity. Can Biodiversity Be Used to Reduce Wildfires?
Over the past several months, wildfires have burned a huge portion of Australia’s natural landscape. We’re talking almost 18 million acres of bushland, forest and national parks. This was not your typical annual wildfire.
Mar 18, 2020
Improving success of giraffe translocations
Researchers advise that Giraffes being translocated for conservation purposes should be moved in groups that contain at least 30 females and three males to ensure long-term population success.