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Publications

Below is a list of WERC's peer-reviewed publications. If you are searching for a specific publication and cannot find it in this list, please contact werc_web@usgs.gov

Filter Total Items: 3743

Relating species abundance distributions to species-area curves in two Mediterranean-type shrublands Relating species abundance distributions to species-area curves in two Mediterranean-type shrublands

Based on both theoretical and empirical studies there is evidence that different species abundance distributions underlie different species-area relationships. Here I show that Australian and Californian shrubland communities (at the scale from 1 to 1000 m2) exhibit different species-area relationships and different species abundance patterns. The species-area relationship in Australian...
Authors
Jon E. Keeley

Keeping the herds healthy and alert: Implications of predator control for infectious disease Keeping the herds healthy and alert: Implications of predator control for infectious disease

Predator control programmes are generally implemented in an attempt to increase prey population sizes. However, predator removal could prove harmful to prey populations that are regulated primarily by parasitic infections rather than by predation. We develop models for microparasitic and macroparasitic infection that specify the conditions where predator removal will (a) increase the...
Authors
Craig Packer, Robert D. Holt, Peter J. Hudson, Kevin D. Lafferty, Andrew P. Dobson

Factors influencing the variation in capture rates of shrews in southern California, USA Factors influencing the variation in capture rates of shrews in southern California, USA

We examined the temporal variation in capture rates of shrewsNotiosorex crawfordi (Coues, 1877) and Sorex ornatus (Merriam, 1895) in 20 sites representing fragmented and continuous habitats in southern California, USA. InN. crawfordi, the temporal variation was significantly correlated with the mean capture rates. Of the 6 landscape variables analyzed (size of the landscape, size of the...
Authors
Juha Laakkonen, Robert N. Fisher, Ted J. Case

Sea otter population declines in the Aleutian Archipelago Sea otter population declines in the Aleutian Archipelago

Sea otter (Enhydra lutris) populations were exploited to near extinction and began to recover after the cessation of commercial hunting in 1911. Remnant colonies of sea otters in the Aleutian archipelago were among the first to recover; they continued to increase through the 1980s but declined abruptly during the 1990s. We conducted an aerial survey of the Aleutian archipelago in 2000...
Authors
Angela M. Doroff, James A. Estes, M. Tim Tinker, Douglas M. Burn, Thomas J. Evans

Introduction to fire danger rating and remote sensing - Will remote sensing enhance wildland fire danger prediction? Introduction to fire danger rating and remote sensing - Will remote sensing enhance wildland fire danger prediction?

While ‘Fire Danger’ per se cannot be measured, the physical properties of the biotic and abiotic world that relate to fire occurrence and fire behavior can. Today, increasingly sophisticated Remote Sensing methods are being developed to more accurately detect fuel properties such as species composition (fuel types), vegetation structure or plant water content - to name a few. Based on
Authors
Britta Allgower, J.D. Carlson, Jan W. Van Wagtendonk
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