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Articles 1261 - 1290 of 2464

Full-Text Articles in Ecology and Evolutionary Biology

Management Of Root Knot Nematode (Meloidogyne Incognita ) In Indiana Soybeans, David Edgardo Perla Martinez Jul 2014

Management Of Root Knot Nematode (Meloidogyne Incognita ) In Indiana Soybeans, David Edgardo Perla Martinez

Open Access Theses

The aim of this project was to evaluate different strategies for management of Root Knot Nematode (RKN) on soybean and tomato in Indiana. Seed treatments were evaluated under field and greenhouse conditions, but no effect on RKN populations was observed. Soybean lines evaluated for resistance to RKN under greenhouse conditions showed that six lines may be resistant to RKN. Four different commercial mustard cover crops were evaluated for their bio-fumigant impact on RKN populations in the production of tomato. Euruca sativa, Cv. Nemat was a poor host of RKN. A positive impact on the vigor of the tomato plants followed …


Refining Phylogenetic Hypotheses Using Chloroplast Genomics And Incomplete Data Sets In Lasthenia (Madieae, Asteraceae), Joseph Frederic Walker Jul 2014

Refining Phylogenetic Hypotheses Using Chloroplast Genomics And Incomplete Data Sets In Lasthenia (Madieae, Asteraceae), Joseph Frederic Walker

Open Access Theses

The genus Lasthenia (Madieae, Asteraceae), consists of predominantly annual plant species that are largely endemic to the California Floristic Province of western North America and occupy a large range of habitat types. With high levels of morphological and ecological diversity, Lasthenia is a robust tool, capable of providing a natural non-model organism for answering a diverse array of ecological and evolutionary questions. Future studies would benefit greatly from a strong phylogenetic hypothesis and more molecular resources, such as the whole plastome sequence for a representative species in the genus. Over a decade ago there was a study that laid a …


Sauger Life History In The Lower Portion Of The Upper Mississippi River, Kasey L. Yallaly, Justin R. Seibert, Sara J. Tripp, David P. Herzog, Quinton E. Phelps Jun 2014

Sauger Life History In The Lower Portion Of The Upper Mississippi River, Kasey L. Yallaly, Justin R. Seibert, Sara J. Tripp, David P. Herzog, Quinton E. Phelps

The Prairie Naturalist

Widespread declines have been observed in numerous riverine fish species due to a host of anthropogenic related perturbations such as channelization, dam creation, and exploitation (Graham 1997, Gerken and Paukert 2009). Understanding life history and population demographics of riverine fishes is critical to their conservation. Specific to our study, the Mississippi River has undergone extensive habitat modifications that have changed the Upper Mississippi River (UMR) from a typical lotic large, free flowing river to multiple reservoir-like pools with reduced flow (LePage 1980, Hurley et al. 1987). These habitat transformations may impact sauger (Sander canadensis) populations within the Mississippi River. Several …


Den Characteristics Of Upland And Low- Land Striped Skunks Along The Missouri River Floodplain, Dave Sempek, James A. Wilson Jun 2014

Den Characteristics Of Upland And Low- Land Striped Skunks Along The Missouri River Floodplain, Dave Sempek, James A. Wilson

The Prairie Naturalist

Striped skunks (Mephitis mephitis) are opportunistic with respect to habitat use (Bixler and Gittleman 2000), inhabiting an array of landscapes in the proximity of a permanent water supply, such as forest borders, old-fields, fencerows, and open grassy fields broken by wooded ravines (Schwartz and Schwartz 1981, Larivière and Messier 2000). Food quantity and accessibility are major factors determining the quality of striped skunk habitat (Larivière et al. 1999) and are important in the den site selection.

Dens play an important role in skunk survival and reproduction due to the warmth, predator protection, and safe location for parturition they provide (Hwang …


Precipitation And Fire Impacts On Small Mammals In Shortgrass Prairie, Whitney J. Priesmeyer, Raymond S. Matlack, Richard T. Kazmair Jun 2014

Precipitation And Fire Impacts On Small Mammals In Shortgrass Prairie, Whitney J. Priesmeyer, Raymond S. Matlack, Richard T. Kazmair

The Prairie Naturalist

The southern Great Plains and the northern part of the Texas Panhandle have received less attention from a biological perspective than other parts of the state. Although there is substantial information on the effects of fire on small mammals in the tallgrass and mixed-grass prairies, there is a lack of understanding of fire influences in the shortgrass prairie, specifically on small mammals. We conducted our study on the Cross Bar Cooperative Management Area (CMA), a 4,856 ha shortgrass prairie within the Texas panhandle. Our objective was to determine the effect of three different fire return frequencies and precipitation on diversity …


Bobcat Predation On Bighorn Lamb In The Western Black Hills Of South Dakota, Brynn L. Parr, John Kanta, Joe Sandrini, Daniel J. Thompson, Jonathan A. Jenks Jun 2014

Bobcat Predation On Bighorn Lamb In The Western Black Hills Of South Dakota, Brynn L. Parr, John Kanta, Joe Sandrini, Daniel J. Thompson, Jonathan A. Jenks

The Prairie Naturalist

Bighorn sheep (Ovis canadensis) are found throughout western North America (Krausman et al. 1993, Goodson 1994, Krausman et al. 1996, Besser et al. 2012). In their current range, commonly documented large predators of bighorn sheep include cougars (Puma concolor), gray foxes (Urocyon cinereoargenteus), wolves (Canis lupus), and coyotes (C. latrans; Ross et al. 1997, Neale et al. 1998, Corti and Shackleton 2002, Dekker 2009, Karsch et al. 2013). Bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) also have been documented as predators to both wild and domestic sheep (Kennedy 1948, Cunningham 1970, Nette et al. 1984, Watte and Phillips …


The Role Of Reviewer Criticism And How To Keep It In Perspective, Christopher N. Jacques Jun 2014

The Role Of Reviewer Criticism And How To Keep It In Perspective, Christopher N. Jacques

The Prairie Naturalist

Greetings GPNSS members! Hopefully this editorial finds you well and gearing up for the summer field season. As I write this editorial, I find myself reflecting on my time as Editor-in-Chief of TPN over the past 5 years. The experience has been personally and professionally rewarding in many ways, and I want to spend some time discussing something that I have experienced not only as a fellow author and Associate Editor, but also as a journal Editor.

Reviewer criticism. Thinking back to when I was appointed Editor, how I viewed criticism then is very different than how I think about …


The Gamekeepers: Wisconsin Wildlife Conservation From Wcd To Cwd. David L. Gjeston., Carrol L. Henderson Jun 2014

The Gamekeepers: Wisconsin Wildlife Conservation From Wcd To Cwd. David L. Gjeston., Carrol L. Henderson

The Prairie Naturalist

Author David L. Gjeston has done a masterful job of capturing the history of wildlife conservation and, in particular, the work of the Wisconsin Department of Natural Resources (formerly the Wisconsin Conservation Department or WCD) in protecting, restoring, and managing the wildlife resources of Wisconsin. Gjeston took on an incredibly complex task. He tells a fascinating story of wildlife conservation comprised of many layers of wildlife management from over a century and a half of evolving perceptions regarding wildlife uses, exploitation, restoration, problems, conflicts, and recreational opportunities that continue to the present.

Perhaps the most appealing part of this book …


Photosynthetic Thermal Tolerance And Recovery To Short Duration Temperature Stress In Desert And Montane Plants: A Comparative Study, David William Gallagher Jun 2014

Photosynthetic Thermal Tolerance And Recovery To Short Duration Temperature Stress In Desert And Montane Plants: A Comparative Study, David William Gallagher

Master's Theses

  • Climate change models predict an increase in frequency and amplitude of extreme weather events, including heat waves. To better predict how the composition and distribution of plant assemblages might respond to these changes in temperature, it is important to understand how species currently respond to these extremes. Photosynthetic thermal tolerance (T25)and photosynthetic recovery (RT25) were quantified in 27 species. We also studied the relationships between T25, RT25 and leaf mass per area (LMA). Leaf temperature was also monitored in the field.
  • Leaves used in this study were collected from two distinct …


Quantifying Differences In Habitat Use Between Anglers And Large Bluegills, Eric J. Weimer, Michael L. Brown, Brian G. Blackwell Jun 2014

Quantifying Differences In Habitat Use Between Anglers And Large Bluegills, Eric J. Weimer, Michael L. Brown, Brian G. Blackwell

The Prairie Naturalist

We compared the habitat use of large (>200 mm) bluegills (Lepomis macrochirus) to the locations of anglers targeting bluegills in a South Dakota glacial lake to determine whether habitat use was similar between anglers and bluegills. Eighty- five bluegills (mean total length = 213 mm) collected in September 2002 and May 2003 were affixed with external radio transmitters and subsequently relocated three to four times per week from October 2002 through October 2003. Bluegill angler locations were recorded during bluegill tracking sessions and roving creel surveys. Habitat variables (water depth, vegetation density and height, and substrate type) were measured …


Mammals Of North Dakota. First Edition. Robert Seabloom., Erin H. Gillam Jun 2014

Mammals Of North Dakota. First Edition. Robert Seabloom., Erin H. Gillam

The Prairie Naturalist

As a mammalogist living in the Great Plains, I was excited to hear about the publication of The Mammals of North Dakota by Robert Seabloom. No such field guide has been compiled since the late 1920s, leaving nature lovers and researchers alike without a modern source of information about the mammals of the state. Despite my enthusiasm, I will admit that I was originally expecting a standard (i.e., boring) field guide with dry facts about the taxonomic groups of interest. Much to my surprise, this book was not a mere list of relevant information, but an engaging work providing extensive …


Diurnal Raptors Of Buffalo County, Nebraska, Thomas L. Freeman Jun 2014

Diurnal Raptors Of Buffalo County, Nebraska, Thomas L. Freeman

The Prairie Naturalist

Diurnal birds of prey are apex predators, which often are utilized as indicators of potential environmental change (Newton 1979, Rodriguez-Estrella et al. 1998). While the Platte River Valley of Nebraska and the central plains are recognized as important winter habitat for numer- ous bird of prey species (United States Fish and Wildlife Service [USFWS] 1981, Root 1988), there are few published studies describing the distribution and abundance of raptors in Nebraska (Mathisen and Mathisen 1968, Craighead and Craighead 1969, USFWS 1981). In addition, studies summarizing the long-term distribution or density of Falconi- formes in Nebraska are limited due to the …


Book Review: The Iowa Lakeside Laboratory: A Century Of Discovering The Nature Of Nature. Michael J. Lannoo., Bonnie S. Bowen Jun 2014

Book Review: The Iowa Lakeside Laboratory: A Century Of Discovering The Nature Of Nature. Michael J. Lannoo., Bonnie S. Bowen

The Prairie Naturalist

Iowa Lakeside Laboratory (a.k.a. Lakeside Lab) is one of several biological field stations that were established in the early 1900s and that have active educational and research programs today. Michael Lannoo’s account of the history of Lakeside Lab was initiated at the centennial celebration of the lab in 2009. Lannoo’s own connection with Iowa Lakeside Laboratory began as a student at Iowa State University and continues today as a member of the Lakeside Lab summer faculty and as Associate Director of Academics and Research. In his book, Lannoo describes field stations, and Lakeside Lab in particular, as educational institutions that …


Book Reviews: Video Surveillance Of Nesting Birds. Edited By Christine A. Ribic, Frank R. Thompson Iii, And Pamela J. Pietz., Marissa A. Ahlering Jun 2014

Book Reviews: Video Surveillance Of Nesting Birds. Edited By Christine A. Ribic, Frank R. Thompson Iii, And Pamela J. Pietz., Marissa A. Ahlering

The Prairie Naturalist

Observations and studies of nests have been a central component of ornithology since its inception. Until recently, studies of nesting ecology were limited to human observation, making some types of information nearly impossible to obtain, such as nocturnal behavior, or difficult to study with adequate sample sizes, such as provisioning behaviors or cause of nest failure. The use of video photography to study the nesting biology of birds has exploded in the past decade, and the most recent volume of Studies in Avian Biology, Video Surveillance of Nesting Birds, has done a nice job of summarizing the history of camera …


Mate Replacement And Alloparental Care In Ferruginous Hawk (Buteo Regalis), Shubham Datta, Will M. Inselman, Jonathan A. Jenks, Kent C. Jensen, Christopher C. Swanson, Robert W. Klaver, Indrani Sasmal, Troy W. Grovenburg Jun 2014

Mate Replacement And Alloparental Care In Ferruginous Hawk (Buteo Regalis), Shubham Datta, Will M. Inselman, Jonathan A. Jenks, Kent C. Jensen, Christopher C. Swanson, Robert W. Klaver, Indrani Sasmal, Troy W. Grovenburg

The Prairie Naturalist

Alloparental care (i.e., care for unrelated offspring) has been documented in various avian species (Maxson 1978, Smith et al. 1996, Tella et al. 1997, Lislevand et al. 2001, Literak and Mraz 2011). A male replacement mate that encounters existing broods has options, which include alloparental care or infanticide. Infanticide may be beneficial in some species (Rohwer 1986, Kermott et al. 1990), but in long-lived avian species, like the ferruginous hawk (Buteo regalis) that do not renest within a season, infanticide might be detrimental. Adoption and rearing success likely provide direct evidence of competence of replacement mates as potential parents for …


Multi-Scale Habitat Use Of Male Ruffed Grouse In The Black Hills National Forest, Cassandra L. Mehls, Kent C. Jensen, Mark A. Rumble, Michael C. Wimberly Jun 2014

Multi-Scale Habitat Use Of Male Ruffed Grouse In The Black Hills National Forest, Cassandra L. Mehls, Kent C. Jensen, Mark A. Rumble, Michael C. Wimberly

The Prairie Naturalist

Ruffed grouse (Bonasa umbellus) are native upland game birds and a management indicator species (MIS) for aspen (Populus tremuloides) in the Black Hills National Forest (Black Hills). Our objective was to assess resource selection of male ruffed grouse to identify the most appropriate scale to manage for aspen and ruffed grouse in the Black Hills. During spring 2007 and 2008, we conducted drumming surveys throughout the central and northern Black Hills to locate used and unused sites from which we compared habitat characteristics at increasing spatial scales. Aspen with >70% overstory canopy cover (OCC) was important to the occurrence of …


Making Nature Whole: A History Of Ecological Restoration. William R. Jordan Iii And George M. Lubick., Daryl D. Smith Jun 2014

Making Nature Whole: A History Of Ecological Restoration. William R. Jordan Iii And George M. Lubick., Daryl D. Smith

The Prairie Naturalist

Ecological restoration—the process of assisting the recovery of ecosystems that have been degraded, damaged, or destroyed—is being incorporated into the fabric of our society. The practice of ecological restoration of natural areas developed and grew in the twentieth century in response to widespread human disturbance of natural communities. Undoubtedly, this type of restoration will continue to increase in importance in the coming decades given the extensive alteration of ecosystems that is occurring and that is showing no signs of abating.

As indicated in the promotional material for Making Nature Whole, Jordan and Lubick have provided a seminal publication for the …


Notes: Bed-Site Selection By Neonatal White-Tailed Deer In Central North Dakota, Brian A. Schaffer, Jonathan A. Jenks, Troy W. Grovenburg, William F. Jensen Jun 2014

Notes: Bed-Site Selection By Neonatal White-Tailed Deer In Central North Dakota, Brian A. Schaffer, Jonathan A. Jenks, Troy W. Grovenburg, William F. Jensen

The Prairie Naturalist

Understanding bed-site selection and vegetation characteristics provides valuable information for population management (Verme 1977, Huegel et al. 1985a, Nelson and Woolf 1987). Predation and other natural-caused mortalities of white-tailed deer (Odocoileus virginianus) neonates are most likely to occur within the first 60 days of life; a time period when selected habitat characteristics are vital to survival (Verme 1977, Hue- gel et al. 1985a, Nelson and Woolf 1987, Grovenburg et al. 2010). Prior to the study of Grovenburg et al. (2010), limited research had been completed on the bed-site selection of neonatal white-tailed deer in the grasslands of the Northern Great …


Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell May 2014

Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell

National Invasive Species Council

Conclusion

The success of any harvest incentive program to address aquatic invasive species will depend upon numerous biological, socioeconomic, and legal considerations. Programs that encourage harvest may be a successful management tool in targeting small, distinct populations; in high priority areas within a larger invasion; or they may play a supplementary role within larger control programs. Their use, however, will require careful review, planning, and monitoring to ensure success and that they do not unintentionally lead to further spread of invasive species, cause additional harm to native species, or waste valuable resources.


Morphometric Studies On Subadult Liza Subviridis And Sillago Sihama From Sonmiani Bay (Miani Hor), Balochistan, Pakistan, Muhammad A. Gondal, Naureen A. Qureshi, Noor U. Saher May 2014

Morphometric Studies On Subadult Liza Subviridis And Sillago Sihama From Sonmiani Bay (Miani Hor), Balochistan, Pakistan, Muhammad A. Gondal, Naureen A. Qureshi, Noor U. Saher

Journal of Bioresource Management

Length-weight relationship of Liza subviridis and Sillago sihama (Family: Mugilidae; Class: Pisces and Family: Sillaginidae; Class: Pisces) in subadults sampled from Somiani Bay Balochistan, Pakistan during 2002, 2003 and 2006 was analyzed. Liza subviridis showed positive allometry (3.23) in 2002, and negative allometry during 2003 (2.95) and 2006 (1.95). Sub adults of Sillago sihama showed positive allometry during 2002 (3.10) and 2003 (3.13). An isometric condition (3.02) was observed in the samples of Sillago sihama collected from Bhaira in 2006.


On Individual, Sex And Age Differentiation Of Indian House Crow (Corvus Splendens) Call: A Preliminary Study In Potohar, Pakistan, Waqas Hameed, Inayat Ullah, Safia Janjua, Fakhar -I- Abbas, Afsar Mian May 2014

On Individual, Sex And Age Differentiation Of Indian House Crow (Corvus Splendens) Call: A Preliminary Study In Potohar, Pakistan, Waqas Hameed, Inayat Ullah, Safia Janjua, Fakhar -I- Abbas, Afsar Mian

Journal of Bioresource Management

Considering importance of acoustics studies in population biology, 500 calls of the Indian House Crow (Corvus splendens) were recorded in morning - mid-afternoon hours (January-February, 2009) from 23 sites of urban areas of Potahar (Punjab, Pakistan). Calls were recorded using Sony CFS 1030 S sound records (sampling rate = 48 KHz) and edited using Sound Analysis Pro (Version 1.02). software using FFT method rate 50%, data window 9.27 ms, advanced window 1.36 ms. Through editing of calls, we selected 60 (37 ♂♂, 17 ♀♀, 6 Juvenile ♂♂) good quality spectrograms for detailed analysis. Spectrograms were characterized by rapid frequency modulations …


Review: Pollination, Pollinated And Pollinators Interaction In Pakistan, Mohammad Irshad, Elizabeth Stephen May 2014

Review: Pollination, Pollinated And Pollinators Interaction In Pakistan, Mohammad Irshad, Elizabeth Stephen

Journal of Bioresource Management

The agriculture sector is important in the overall economy and export earnings of Pakistan. Pollination is an essential ecosystem service that depends on symbiosis between species, the pollinated and the pollinator. Animal mediated pollination contributes to the sexual production of over 90% species of modern angiosperms. Effective pollination results in increased crop production, quality improvement and more seed production. Many fruits, vegetables, edible oil crops, stimulant crops and nuts are highly dependent on bee pollination. Worldwide value of pollinators is €153 billion (217 billion US dollars). The production value of pollinated dependent crop in Pakistan is quantified to be 1.59 …


Research Note: Contribution To Mushroom Flora Of Rawalpindi-Islamabad, Pakistan, Kishwar Sultana, Naveeda Riaz, Gulshan Irshad, Ali Nauman Khan May 2014

Research Note: Contribution To Mushroom Flora Of Rawalpindi-Islamabad, Pakistan, Kishwar Sultana, Naveeda Riaz, Gulshan Irshad, Ali Nauman Khan

Journal of Bioresource Management

Seven hymenomycetous fungi (mushrooms) were collected from the twin cities area during July 2008. These were identified as the members of the order Agaricales, class Basidiomycetes. They belong to five genera: *Clitocybe fragrans, *Collybia cookie, *Coprinus radians, *Coprinus sterculinus, *Volvariella bingensis, Volvariella parvula, and Termitomyces microcarpus. Five of them, marked with asterisk were reported for the first time from Pakistan.


Diagnostic Accuracy Of C-Reactive Protein In Neonatal Sepsis, Sidra Younis, Muhammad Ali Sheikh, Amjad Ali Raza May 2014

Diagnostic Accuracy Of C-Reactive Protein In Neonatal Sepsis, Sidra Younis, Muhammad Ali Sheikh, Amjad Ali Raza

Journal of Bioresource Management

Sepsis is the most common cause of neonatal mortality and is responsible for 30-50% of total neonatal deaths each year in developing countries. The objective of the study was to determine the diagnostic accuracy of C-reactive protein (CRP) in neonatal sepsis. Fifty nine consecutive patients with risk factors and clinical features suggestive of CRP sepsis were selected as per operational definition and fulfilling the inclusion and exclusion criteria. Detailed physical examination was carried out. Blood sample for culture and CRP was taken from all the patients. Results of blood culture and CRP were noted down in the performa. Statistical analysis …


Habitat Assessment Of Two Narrowly Endemic Plant Species, Ozark Spiderwort (Tradescantia Ozarkana) E. S. Anderson And Woods. And Newton's Larkspur (Delphinium Newtonianum) D. M. Moore, Autumn Lynn Coffey Olsen May 2014

Habitat Assessment Of Two Narrowly Endemic Plant Species, Ozark Spiderwort (Tradescantia Ozarkana) E. S. Anderson And Woods. And Newton's Larkspur (Delphinium Newtonianum) D. M. Moore, Autumn Lynn Coffey Olsen

Graduate Theses and Dissertations

The threat of biodiversity loss is upon us with the onset of climate change and our ever-demanding needs of the Earth's resources for a rapidly growing human population. Species highly vulnerable to loss are those limited in abundance and distribution, or those with reduced genetic diversity. Efforts to actively conserve a sensitive species require effectual data on the probable causes of their vulnerability. Two species of concern, Delphinium newtonianum and Tradescantia ozarkana, are globally rare endemic vascular plant species found only in the Interior Highlands of North America. In an attempt to understand the causes for their endemism, habitat …


From The Inside Out, And Through., Dominique Ovalle Feb 2014

From The Inside Out, And Through., Dominique Ovalle

The Transdisciplinary STEAM+ Journal

These photographs describe “Science” born of consumerism, hijacked by me, economically disenfranchised, or rather—temporarily embarrassed, artist. I was putzing around Malibu—my old college stomping ground, looking for free food; maybe a sample of some gourmet $5 chocolate, and all I got were these photographs.


A Global Analysis Of The Impacts Of Urbanization On Bird And Plant Diversity Reveals Key Anthropogenic Drivers, Myla F.J. Aronson, Frank A. La Sorte, Charles H. Nilon, Madhusudan Katti, Mark A. Goddard, Christopher A. Lepczyk, Paige S. Warren, Nicholas S.G. Williams, Sarel Cilliers, Bruce Clarkson, Cynnamon Dobbs, Rebecca W. Dolan, Marcus Hedblom, Stefan Klotz, Jip Louwe Kooijmans, Ingolf Kühn, Ian Macgregor-Fors, Mark Mcdonnell, Ulla Mörtberg, Petr Pyšek, Stefan Siebert, Jessica Sushinsky, Peter Werner, Marten Winter Feb 2014

A Global Analysis Of The Impacts Of Urbanization On Bird And Plant Diversity Reveals Key Anthropogenic Drivers, Myla F.J. Aronson, Frank A. La Sorte, Charles H. Nilon, Madhusudan Katti, Mark A. Goddard, Christopher A. Lepczyk, Paige S. Warren, Nicholas S.G. Williams, Sarel Cilliers, Bruce Clarkson, Cynnamon Dobbs, Rebecca W. Dolan, Marcus Hedblom, Stefan Klotz, Jip Louwe Kooijmans, Ingolf Kühn, Ian Macgregor-Fors, Mark Mcdonnell, Ulla Mörtberg, Petr Pyšek, Stefan Siebert, Jessica Sushinsky, Peter Werner, Marten Winter

Scholarship and Professional Work - LAS

Urbanization contributes to the loss of the world's biodiversity and the homogenization of its biota. However, comparative studies of urban biodiversity leading to robust generalities of the status and drivers of biodiversity in cities at the global scale are lacking. Here, we compiled the largest global dataset to date of two diverse taxa in cities: birds (54 cities) and plants (110 cities). We found that the majority of urban bird and plant species are native in the world's cities. Few plants and birds are cosmopolitan, the most common beingColumba livia and Poa annua. The density of bird and …


A New Perspective On Trait Differences Between Native And Invasive Exotic Plants, A. Joshua Leffler, Jeremy J. James, Thomas A. Monaco, Roger L. Sheley Feb 2014

A New Perspective On Trait Differences Between Native And Invasive Exotic Plants, A. Joshua Leffler, Jeremy J. James, Thomas A. Monaco, Roger L. Sheley

Natural Resource Management Faculty Publications

Functional differences between native and exotic species potentially constitute one factor responsible for plant invasion. Differences in trait values between native and exotic invasive species, however, should not be considered fixed and may depend on the context of the comparison. Furthermore, the magnitude of difference between native and exotic species necessary to trigger invasion is unknown. We propose a criterion that differences in trait values between a native and exotic invasive species must be greater than differences between co-occurring natives for this difference to be ecologically meaningful and a contributing factor to plant invasion. We used a meta-analysis to quantify …


Warming, Soil Moisture, And Loss Of Snow Increase Bromus Tectorum’S Population Growth Rate, Aldo Compagnoni, Peter B. Adler Jan 2014

Warming, Soil Moisture, And Loss Of Snow Increase Bromus Tectorum’S Population Growth Rate, Aldo Compagnoni, Peter B. Adler

Green Canyon Environmental Research Area, Logan Utah

Climate change threatens to exacerbate the impacts of invasive species. In temperate ecosystems, direct effects of warming may be compounded by dramatic reductions in winter snow cover. Cheatgrass (Bromus tectorum) is arguably the most destructive biological invader in basins of the North American Intermountain West, and warming could increase its performance through direct effects on demographic rates or through indirect effects mediated by loss of snow. We conducted a two-year experimental manipulation of temperature and snow pack to test whether 1) warming increases cheatgrass population growth rate and 2) reduced snow cover contributes to cheatgrass’ positive response to …


2matrix: A Utility For Indel Coding And Phylogenetic Matrix Concatenation, Nelson R. Salinas, Damon P. Little Jan 2014

2matrix: A Utility For Indel Coding And Phylogenetic Matrix Concatenation, Nelson R. Salinas, Damon P. Little

Publications and Research

Premise of the study: Phylogenetic analysis of DNA and amino acid sequences requires the creation of files formatted specifically for each analysis package. Programs currently available cannot simultaneously code inferred insertion/deletion (indel) events in sequence alignments and concatenate data sets.

Methods and Results: A novel Perl script, 2matrix, was created to concatenate matrices of non-molecular characters and/or aligned sequences and to code indels. 2matrix outputs a variety of formats compatible with popular phylogenetic programs.

Conclusions: 2matrix efficiently codes indels and concatenates matrices of sequences and non-molecular data. It is available for free download under a GPL (General Public License) open …