Derek Lee

Associate Research Professor

Huck Affiliations

Publication Tags

Giraffa 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

Giraffe translocations

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

Most-Cited Papers

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

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.

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.

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.

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.

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.

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.

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.

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.