Mission Areas L2 Landing Page Tabs
Sympatric occurrence of Eubranchiopoda in ephemeral pools: a commentGraham, T.B.
The new world mine and grizzly bears: A window on ecosystem managementMattson, D.J.
The use of satellite systems for the study of bird migrationFuller, Mark R.; Seegar, W.; Howell, P.
Values associated with management of Yellowstone cutthroat trout in Yellowstone National Park
Recent emphasis on a holistic view of natural systems and their management is associated with a growing appreciation of the role of human values in these systems. In the past, resource management has been perceived as a dichotomy between extraction (harvest) and nonconsumptive use, but this appears to be an oversimplified view of natural-cultural...Gresswell, Robert E.; Liss, W.J.
Vine maple (Acer circinatum) clone growth and reproduction in managed and unmanaged coastal Oregon douglas-fir forests
Vine maple (Acer circinatum Pursh.) clone development, expansion, and regeneration by seedling establishment were studied in 5-240 yr old managed and unmanaged Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in coastal Oregon. Stem length, number of stems, and crown area were all significantly (P @< 0.01) related to stand age, and...O'Dea, Mary E.; Zasada, John C.; Tappeiner, John C.
Biology of North American tortoises
Chelonians have fascinated people for centuries and have been the object of biological studies for nearly as long. Perhaps the long life span and harmless demeanor of most species contribute to their wide appeal. they also represent a link to the distant past because their characteristic shell separated this line of ectotherms from all other...Bury, R. Bruce; Germano, David J.
Coloration frequencies of male house finches in Hawaiivan Riper, Charles; Hirai, L.T.
Getting a handle on visitor carrying capacity - A pilot project at Arches National ParkHof, Marilyn; Hammett, Jim; Rees, Michael; Belnap, Jayne; Poe, N.; Lime, Dave; Manning, Bob
Holocene paleoecology of an estuary on Santa Rosa Island, California
The middle to late Holocene history and early Anglo-European settlement impacts on Santa Rosa Island, California, were studied through the analysis of sediments in a small estuarine marsh. A 5.4-m-long sediment core produced a stratigraphic and pollen record spanning the last 5200 yr. Three major zones are distinguishable in the core. The...Cole, K.L.; Liu, Gaisheng
Identification of kin structure among Guam rail founders: a comparison of pedigrees and DNA profiles
Kin structure among founders can have a significant effect on subsequent population structure. Here we use the correlation between DNA profile similarity and relatedness calculated from pedigrees to test hypotheses regarding kin structure among founders to the captive Guam rail (Rallus owstoni) population. Five different pedigrees were generated...Haig, Susan M.; Ballou, J.D.; Casna, N.J.
Integrating limnological characteristics of high mountain lakes into the landscape of a natural area
A general conceptual watershed-lake model of the complex interactions among climatic conditions, watershed location and characteristics, lake morphology, and fish predation was used to evaluate limnological characteristics of high mountain lakes. Our main hypothesis was that decreasing elevation in mountainous terrain corresponds to an increase in...Larson, Gary L.; Wones, A.; McIntire, C.D.; Samora, B.
Life-history organization of Yellowstone cutthroat trout (Oncorhynchus clarki bouvieri) in Yellowstone Lake
Life-history organization of the cutthroat trout (Oncorhynchus clarki) may be viewed at various levels, including species, subspecies, metapopulation, population, or individual. Each level varies in spatial scale and temporal persistence, and components at each level continually change with changes in environment. Cutthroat trout are widely...Gresswell, Robert E.; Liss, W.J.; Larson, Gary L.