Life Sciences Commons^™

A New Species Of Emballonura (Chiroptera: Emballonuridae) From The Dry Regions Of Madagascar, Steven M. Goodman, Scott G. Cardiff, Julie Ranivo, Amy L. Russell, Anne D. Yoder

Amy L. Russell

Adding Ecological Considerations To Environmental Accounting, David A. Bainbridge

David A Bainbridge

Environmental accounting has often neglected ecological costs. These are essential to complete a true cost accounting. Ecological costs are often very large and long term and if they are ignored the costs/benefits of projects are incorrectly calculated.

Characterization Of Wastewater Streams From Bor Site, Zeljko J. Kamberovic

Zeljko J Kamberovic

This paper presents full characterization of wastewater streams within Bor copper mine. Seven different wastewater streams were identified and fully characterized (origin, flow rate, chemical and physical properties) on basis of five year analysis. Taking into consideration chemical composition and flow rate of each wastewater calculations of metal loss through wastewaters was calculated. This characterization is the first step in investigations for best remediation technology of wastewaters all together or individual.

How Earth Remote Sensing From The International Space Station Complements Current Satellite‐Based Sensors, Jennifer Gebelein, Dean Eppler

Jennifer Gebelein

The International Space Station (ISS) will provide an Earth‐and space‐observing platform that will support sensors built by 16 different countries and deliver data and images for local, regional and global research. When complete, it will be an exceptional platform for conducting remote sensing of the Earth, astrophysics, and space physics research programmes. Additionally, the ISS will operate as a testbed for engineering studies and complex technological developments that will benefit future Earth‐observing capabilities. ...

Phylogeography Of The Flag Cabrilla Epinephelus Labriformis (Serranidae): Implications For The Biogeography Of The Tropical Eastern Pacific And The Early Stages Of Speciation In A Marine Shore Fish, Mathew T. Craig, Phillip A. Hastings, Daniel J. Pondella Ii, D. Ross Robertson, Jorge A. Rosales-Casián

Daniel Pondella

To examine the role of previously described biogeographical boundaries in shaping phylogeographical relationships within and among two putative eastern Pacific sibling species, the flag cabrilla, Epinephelus labriformis and the Clipperton grouper, Epinephelus clippertonensis (Serranidae).

Bert Bender, Evolution And The Sex Problem (Review), David Depew

David J Depew

No abstract provided.

Littoral Benthic Marcroinvertebrates Under Contrasting Drawdown In A Reservoir And A Natural Lake, Paula Furey, Rick N. Nordin, Asit Mazumder

Paula Furey

No abstract provided.

Channel-Reach Morphology Dependence On Energy, Scale, And Hydroclimatic Processes With Implications For Prediction Using Geospatial Data, Alejandro N. Flores, Brian P. Bledsoe, Christopher O. Cuhaciyan, Ellen E. Wohl

Alejandro N. Flores

Channel types found in mountain drainages occupy characteristic but intergrading ranges of bed slope that reflect a dynamic balance between erosive energy and channel boundary resistance. Using a classification and regression tree (CART) modeling approach, we demonstrate that drainage area scaling of channel slopes provides better discrimination of these forms than slope alone among supply- and capacity-limited sites. Analysis of 270 stream reaches in the western United States exhibiting four common mountain channel types reveals that these types exist within relatively discrete ranges of an index of specific stream power. We also demonstrate associations among regional interannual precipitation variability, discharge …

Spatial Learning In Dragonflies, Perri K. Eason, Paul Switzer

Paul V. Switzer

No abstract provided.

Acorn Use As Food, David A. Bainbridge

David A Bainbridge

The acorns from oaks (Quercus) and tan oaks (Lithocarpus) have been used as food for many thousands of years. They occur in the archaeological record of the early town sites in the Zagros Mountains, at Catal Hüyük (6000 BC), and oak trees were carefully inventoried by the Assyrians during the reign of Sargon II. In Europe, Asia, North Africa, the Mid-East, and North America, acorns were once a staple food. They are still a commercial food crop in several countries. Acorns are still harvested and used in several areas of the United States, most notably Southern Arizona and California. There …

Nest Success Of Mountain Plover Relative To Anthropogenic Edges In Eastern Colorad, Christian Mettenbrink, Victoria Dreitz, Fritz Knopf

Victoria Dreitz

No abstract provided.

Issues In Species Recovery: An Example Based On The Wyoming Toad, Victoria Dreitz

Victoria Dreitz

No abstract provided.

Comparative Efficiency Of Six Stable Fly Traps., David B. Taylor, Dennis R. Berkebile

David B Taylor

Five adhesive traps and the Nzi cloth-target trap were compared to determine their trapping efficiency and biases for stable flies, Stomoxys calcitrans (L.) (Diptera: Muscidae). Two confgurations of the BiteFree prototype trap, constructed of polyethylene terephthalate, were most efficient for trapping stable flies, whereas the EZ trap was least efficient. The two Alsynite traps, Broce and Olson, were intermediate to the BiteFree prototype and EZ traps. All adhesive traps collected a ratio of approximately two males for each female. Approximately 50% of the flies collected on the adhesive traps, both male and female, were blood fed, and 20% were vitellogenic. …

Use Of Fatty Acid Profiles To Distinguish Between Selected Game Fish And Farm-Raised Channel Catfish, Randy S. Stahl, Brian S. Dorr, Scott C. Barras, John J. Johnston

Brian S Dorr

No abstract provided.

On The Robustness Of Robustness Checks Of The Environmental Kuznets Curve, Marzio Galeotti, Matteo Manera, Alessandro Lanza

Matteo Manera

Since its first inception in the debate on the relationship between environment and growth in 1992, the Environmental Kuznets Curve has been subject of continuous and intense scrutiny. The literature can be roughly divided in two historical phases. Initially, after the seminal contributions, additional work aimed to extend the investigation to new pollutants and to verify the existence of an inverted-U shape as well as assessing the value of the turning point. The following phase focused instead on the robustness of the empirical relationship, particularly with respect to the omission of relevant explanatory variables other than GDP, alternative datasets, functional …

Nmr Investigations Of Natural Organic Matter In Forest Ecosystems, Chris E. Johnson

Chris E Johnson

No abstract provided.

The Scent Of Danger: Tetrodotoxin (Ttx) As An Olfactory Cue Of Predation Risk, Richard Zimmer, Daniel Schar, Ryan Ferrer, Patrick Krug, Lee Kats, William Michel

Lee Kats

Larvae of the California newt (Taricha torosa) exhibit striking predator- avoidance behavior, escaping to refuges in response to a chemical cue from cannibalistic adults. In laboratory flow-tank experiments, stream water collected near free-ranging adults induced hiding responses in 100% of the larvae tested. Solutions prepared by bathing adults (in field and laboratory) also evoked strong hiding behaviors. Insensitive to adult feeding status (fed or starved), and clearly not an excretory product, the chemical cue was released from adult skin (i.e., in swabs of adult backs, sides, and bellies). Tetrodotoxin (TTX) was found in skin swabs of adults and in bathwater …

Longevity And Breeding Pool Fidelity In The California Newt (Taricha Torosa): A Long-Term Study Using Pit Tagging, T. Watters, Lee Kats

Lee Kats

No abstract provided.

A New Species Of Eleutherocadtylus (Anura: Leptodactylidae) From The Eastern Andes Of Central Peru With Comments On Central Peruvian Eleutherodactylus, Edgar Lehr, Mikael Lundberg, Cesar Aguilar, Rudolf Von May

Edgar Lehr

A new species of the Eleutherodactylus nigrovittatus Group is described from five localities, at elevations of 1800-2760 m in cloud forests in the Cordillera Oriental in central Peru (Distrito de Paucartambo, Departamento de Pasco). The new species is assigned to the Eleutherodactylus nigrovittatus Group, and differs from all described species therein by having a combination of smooth skin on the venter, undilated discs on the digits, Finger I and Finger II of variable length (slightly shorter, slightly longer or of equal length), Toe III and Toe V of variable length (slightly shorter, slightly longer or of equal length), and a …

A New Species Of Glass Frog (Centrolenidae: Cochranella Ocellata Group) From Central Peru, Edgar Lehr, Juan Guayasamin, Daniel Rodriguez, Cesar Aguilar

Edgar Lehr

We describe a new species of Cochranella from the Cordillera de Carpish, Departmento Huánuco, Peru. The new species is placed in the Cochranella ocellata group and can be distinguished from all other species of Cochranella by having: (1) small white and dark purple spots on the dorsum; (2) a snout slightly protruding to truncate in lateral aspect; (3) and basal webbing between Fingers III and IV.

Taxomic Status Of Some Species Of Peruvian Phrynopus (Anura: Leptodactylidae), With The Description Of A New Species From The Andes Of Southern Peru, Edgar Lehr

Edgar Lehr

Based on external morphological and osteological characters, Phrynopus fallaciosus and Phrynopus flavomaculatus are placed in the Eleutherodactylus nigrovittatus Group, and the latter is reported for the first time in Peru (Departmento de Piura). Based on external morphological characters, Phrynopus laplacai is considered to be a junior synonym of P. wettsteini. The type locality of P. wettsteini in Peru is considered as doubtful, and the distribution of the species seems to be restricted to Bolivia. Based on external and internal morphological characters, including comparatively large testes, Phrynopus spectabilis is placed in the synonymy of Pleurodema marmorata. Males of several species of …

Ecology Of Marine Fishes : California And Adjacent Waters, Larry Allen, Daniel Pondella, Michael Horn

Daniel Pondella

Fundamental ideas in marine ecology have emerged from the study of marine fishes. This unique, authoritative, and accessible reference, compiled by 35 luminary ecologists, evolutionary biologists, and ichthyologists, provides the first-ever synthesis and interpretation of the large, often daunting, body of information on the ecology of marine fishes. Comprehensive and generously illustrated, this volume focuses on the fauna of the eastern pacific, paying particular attention to the California coast, which is among the most diverse and best studied of all marine ecosystems.

A New Species Of Marsupial Frog (Anura: Hylidae:Gastrotheca) From The Amazonian Slopes Of The Cordillera Oriental In Peru, Edgar Lehr, William Duellman, Linda Trueb

Edgar Lehr

A New species of marsupial frog, Gastrotheca, with prominent cranial crests is described from humid montane forest on the eastern slopes of the Andes in Departmento de Pasco, Peru. The frog ahs an exceedingly robust cranium that most closely resembles that of G. cornuta; however, the cranial crests of G. cornuta are less well developed, and less obvious externally, than those of the new taxon. Within the genus Gastrotheca, one of the most variable parts of the skull is the squamosal, which has a variety of articular arrangements with the maxilla, the pterygoid, and in some taxa, the frontoparietal. In …

Leptonycteris Yerbabuenae, F Cole, Don Wilson

F. Russell Cole

No abstract provided.

The Effect Of Environmental Parameters And Cyanobacterial Blooms On Phytoplankton Dynamics Of A Portuguese Temperate Lake, Daniela De Figueiredo, Ana Reboleira, S. Antunes, N. Abrantes, U. Azeiteiro, F. Gonçalves, M. Pereira

Ana Sofia P.S. Reboleira

The increasing occurrence of cyanobacterial blooms in freshwaters is of great concern due to the ability of many cyanobacteria to produce cyanotoxins. In the present work, the eutrophied Vela Lake (Central Portugal), used for recreational purposes and as a water source for agriculture, was monitored every fortnight between 2000 and 2001. Phytoplankton diversity and densities were measured and correlated to environmental parameters. A seasonal phytoplanktonic succession was observed and it was mainly correlated with conductivity, temperature, total suspended solids and nutrients availability (particularly phosphorus). Diatoms were dominant during winter months (inferior temperatures and higher nutrients availability) followed by green algae …

Toward A Conceptual And Operational Union Of Bacterial Systematics, Ecology, And Evolution, Frederick M. Cohan

Frederick M. Cohan

No abstract provided.

Endogenous Fractal Dynamics At Alpine Treeline Ecotones, George P. Malanson

George P Malanson

Many of the hypotheses proposed to explain ecotones are based on an individualistic paradigm and are essentially static. While they include local feedbacks, they ignore the interactions between pattern and process across scales. These feedbacks in ecotones are nonlinear in nature and complicate the relations of pattern and process in vegetation, which, combined with observed fractal patterns, suggests a complexity science approach to investigate ecotone dynamics. A cellular automaton of alpine treeline, including nonlinear, local, positive, and negative feedbacks in tree establishment and mortality, as reported in field studies, is used as a model system. Fourier analysis of simulated alpine …

Book Review- Amphibians Of An Amazonian Blackwater Pond In Peru: Schluter, A., Edgar Lehr

Edgar Lehr

No abstract provided.

Size Selectivity Of Purse Seines In The Southern Philippines Multispecies Tuna Fisheries, Michael A. Rice, Joseph T. Dealteris, Samuel E. Resma

Michael A Rice

The multi-species Philippine tuna purse seine fishery targets three tuna species: skipjack (Katsuwonus pelamis), yellowfin tuna (Thunnus albacares) and bigeye tuna (Thunnus obesus). These are highly migratory pelagic fishes that grow to different maximum lengths and weights. At present there is no mesh size regulation specific to the fishery in the Philippines although tuna purse seines generally use 8.9cm (3.5 in) mesh size in the bunt of the net. An empirical analysis was conducted to compare the catches of purse seine nets with two different mesh sizes in the top portion of the bunt: 8.9cm and 12.7cm. Field measurements of …

Cyanobacterial Ecotypes In The Microbial Mat Community Of Mushroom Spring (Yellowstone National Park, Wyoming) As Species-Like Units Linking Microbial Community Composition, Structure And Function, D. M. Ward, M. M. Bateson, M. J. Ferris, M. Kuhl, A. Wieland, A. Koeppel, Frederick M. Cohan

Frederick M. Cohan

No abstract provided.