Products
We identify issues and uncertainties that pose obstacles to conservation and then—in collaboration with internal and external colleagues—develop science products that help overcome those obstacles.
2009 | Terrestrial | Science | Publications & Reports
Fire on Guadalupe Island reveals some old wounds – and new opportunity
Oberbauer, T., L. Luna Mendoza, N. Citlali Oliveres, L. Barbosa Deveze, I. Granillo Duarten, S.A. Morrison
Guadalupe Island in Mexico is undergoing a dramatic ecological recovery following the eradication of feral goats. Unfortunately, that eradication came too late for some species and ecosystems, and…
2009 | Terrestrial | Science | Publications & Reports
Reproductive consequences of an extreme drought for orange-crowned warblers on Santa Catalina and Santa Cruz Islands
Kathryn M. Langin, T. Scott Sillett, Jongmin Yoon, Helen R. Sofaer, Scott A. Morrison, Cameron K. Ghalambor
Island archipelagos can provide useful opportunities for comparative studies in ecology. For example, breeding ecology of a songbird was studied on two of the California Channel Islands, which share…
2009 | Terrestrial | Science | Publications & Reports
Incorporating ecological drivers and uncertainty into a demographic population viability analysis for the island fox
Victoria J. Bakker, Daniel F. Doak, Gary W. Roemer, David K. Garcelon, Timothy J. Coonan, Scott A. Morrison, Colleen Lynch, Katherine Ralls, Rebecca Shaw
Population models can be a critical tool in managing recovery of endangered species. This paper presents an analysis that became the foundation of recovery planning and tracking for the endangered…
2008 | Terrestrial | Science | Publications & Reports
Quantifying eradication success: the removal of feral pigs from Santa Cruz Island, California
DSL Ramsey, J Parkes, SA Morrison
Populations at very low abundance can be very difficult to detect. Consequently, one of the biggest challenges of eradication projects is determining whether an inability to detect the species at the…
2008 | Terrestrial | Planning | Publications & Reports
Conserving connectivity: some lessons from mountain lions in southern California
Scott Morrison, Walter Boyce
Critical for biodiversity conservation is the retention of ecological connectivity in the landscape, so that wildlife—and the natural processes that sustain wildlife—can move around.…
2008 | Terrestrial | Technology | Science | Publications & Reports
One size does not fit all: the use of cattle grazing for grassland management at Carrizo Plain National Monument
Caroline Christian , Lawrence Saslaw, H. Scott Butterfield
To better understand the ecological role of cattle grazing in managing Carrizo Plain National Monument, we initiated a long-term study in 1997 designed to evaluate the effects of cattle grazing on…
2007 | Terrestrial | Science | Publications & Reports
Reducing risk and enhancing efficiency in non-native vertebrate removal efforts on islands: a 25 year multi-taxa retrospective from Santa Cruz Island, CA
Eradication of invasive non-native species is often necessary to protect island ecosystems. Eradication efforts can nonetheless be risky investments. How they are planned and implemented can greatly…
2007 | Terrestrial | Science | Publications & Reports
Facing the dilemma at eradication’s end: uncertainty of absence and the Lazarus effect
Scott A. Morrison, Norman Macdonald, Kelvin Walker, Lynn Lozier, M Rebecca Shaw
One of the greatest challenges in pest eradication is knowing when it has been achieved. This paper discusses why that is challenging, and why it is so important to consider how that challenge will be…
2004 | Terrestrial | Science | Publications & Reports
Annual survivorship of a sedentary sparrow: no effect of edge or rainfall
Scott A. Morrison, Douglas T. Bolger, T. Scott Sillett
Fragmentation-sensitive species – those that tend to disappear when their habitat is fragmented – pose particular challenges for conservation, in part because fragmentation ushers in such…