Digital Commons Network^™

Ecological Disturbance And Response: Central Role Of Biological Legacies, Jerry F. Franklin, David Lidenmayer, James A. Macmahon, John Magnuson, Arthur Mcknee, David Perry, Robert Waide, David Foster, Frederick Swanson

Long Term Ecological Research Network

Introduction: Our understanding of the long-term ecological consequences of ecosystems disturbances has increased dramatically in the last two decades. The expansion in knowledge has been fueled by recent large and intense natural disturbances that have provided scientists with extraordinary opportunities to thoroughly investigate impacts and recovery processes associated with such disturbances. These disturbances events include the Mount St. Helens eruption of 1980 (Franklin et al. 1984; Franklin, Frenzen, and Swanson 1996). Yellowstone forest fires of 1988 (Christensen et al. 1989) and Hurricane Hugo of 1989 (Walker et al. 1991) and Andrew of 1992 (Pimm et al. 1994). Experiments and long-term …

Survey Of Whole Air Data From The Second Airborne Biomass Burning And Lightning Experiment Using Principal Component Analysis, Felisa A. Smith, Yunsoo Choi, Scott Elliott, Isobel J. Simpson, Donald R. Blake, Jonah J. Colman, Manvendra K. Dubey, Simone Meinardi, F. Sherwood Rowland, Tomoko Shirai

Biology Faculty & Staff Publications

Hydrocarbon and halocarbon measurements collected during the second airborne Biomass Burning and Lightning Experiment (BIBLE-B) were subjected to a principal component analysis (PCA), to test the capability for identifying intercorrelated compounds within a large whole air data set. The BIBLE expeditions have sought to quantify and understand the products of burning, electrical discharge, and general atmospheric chemical processes during flights arrayed along the western edge of the Pacific. Principal component analysis was found to offer a compact method for identifying the major modes of composition encountered in the regional whole air data set. Transecting the continental monsoon, urban and industrial …

Bible A Whole-Air Sampling As A Window On Asian Biogeochemistry, Felisa A. Smith, Scott Elliott, Donald R. Blake, Nikola J. Blake, Manvendra D. Dubey, F. Sherwood Rowland, Barkley C. Sive

Biology Faculty & Staff Publications

Asian trace gas and aerosol emissions into carbon, nitrogen, and other elemental cycles will figure prominently in near term Earth system evolution. Atmospheric hydrocarbon measurements resolve numerous chemical species and can be used to investigate sourcing for key geocarriers. A recent aircraft study of biomass burning and lightning (BIBLE A) explored the East Asian atmosphere and was unique in centering on the Indonesian archipelago. Samples of volatile organics taken over/between the islands of Japan, Saipan, Java, and Borneo are here examined as a guide to whole-air-based studies of future Asian biogeochemistry. The midlatitude onshore/offshore pulse and tropical convection strongly influence …

Genome Size Of Biomphalaria Glabrata, Coen Adema

Biomphalaria Genome Initiative

No abstract provided.

Thermal Time: Body Size, Food Quality And The 10c Rule, Eric Charnov, James Gillooly

Biology Faculty & Staff Publications

Developmental rates of ectotherms (y) are often linearly related to temperature (Tc in C) within some biologically relevant range of temperatures as y = (1/S)(Tc - Tb), where Tb is the estimated temperature at zero development, and the thermal constant S is the development time multiplied by the temperature above Tb (i.e. degree days above Tb). Among similar species, it has been widely shown that S and Tb are negatively related across environments, that S is positively related to body size, and that Tb is independent of body size but increases with mean environmental temperature. Here we present a model …

The Galapagos Giant Tortoise (Geochelone Elephantopus) And The Spread Of Invasive Plants, Anne D. Schultz

Biology ETDs

Island ecosystems are commonly thought to be more vulnerable to the effects of invasive species than mainland systems. In recent decades, the number of exotic plants known to be present in the Galapagos archipelago has increased exponentially. Several of these plants are aggressive invaders that pose a threat to the biodiversity of the islands. Two of these plant species, Passiflora edulis Sims and Psidium guajava L. were introduced to Santa Cruz Island during the 20th century. Both pose a threat to the floristic diversity of the National Park land on Santa Cruz Island.

This paper explores the role played by …