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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: 3620

Population trends of the mantled howler monkey groups of La Pacifica, Guanacaste, Costa Rica

A complete survey of La Pacifica in Guanacaste Province, Costa Rica was conducted in July 1984 in order to determine whether the howler (Alouatta palliata) population had declined since 1972 as a result of deforestation. During the 6-day survey, 257 howlers were located, representing 16 different social groupings and nine solitary animals. The total number of howlers, the number and location of gr
Authors
M. R. Clarke, E. L. Zucker, N. J. Scott

"Tapping": A technique for capturing tortoises

No abstract available.
Authors
P.A. Medica, C.L. Lyons, F.B. Turner

The use of stable isotopes in the study of photosynthesis in freshwater plants

The ratio of 13C/12C for photosynthetic tissues of 22 aquatic species was unrelated to photosynthetic pathway. In three aquatic environments CAM and non-CAM species were shown to have similar δ13C values. Although these CAM species derive up to half of their net carbon gain through dark fixation their δ13C values are similar to associated non-CAM species in part because the carbon source for dark
Authors
Jon E. Keeley, Leonel Sternberg, Michael J. DeNiro

Trailhead quotas

No abstract available.
Authors
J. W. van Wagtendonk, P.R. Coho

Relationships between selenium concentrations and avian reproduction

No abstract available.
Authors
H. M. Ohlendorf, R. L. Hothem, C. M. Bunck, T. W. Aldrich, John F. Moore

Natural fire management in national parks

An evolving understanding of ecological processes, together with ambiguities in National Park Service policy, have led to multiple interpretations of the role of management in our large natural area National Parks. National Park Service management policies must be dynamic and responsive to changes in scientific knowledge and societal values. We propose that the principal aim of NPS resource manage
Authors
D.J. Parsons, D.M. Graber, J.K. Agee, J. W. van Wagtendonk

The boundary model: A geographical analysis of design and conservation of nature reserves

It is widely recognised that nearly all parks and reserves are too small to protect their biological diversity. In response to this problem, we have been developing a multidisciplinary ‘boundary model’ that focuses upon the processes of exchange across the administrative edges of nature reserves. The model incorporates known dynamics from various disciplines and describes the interactions of these
Authors
C. Schonewald-Cox, J.W. Bayless
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