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Full-Text Articles in Biodiversity

Recent Decline Of Lowland Populations Of The Western Gray Squirrel In The Los Angeles Area Of Southern California, Daniel S. Cooper, Alan Muchlinski Jul 2105

Recent Decline Of Lowland Populations Of The Western Gray Squirrel In The Los Angeles Area Of Southern California, Daniel S. Cooper, Alan Muchlinski

Bulletin of the Southern California Academy of Sciences

We provide an overview of the distribution of lowland and otherwise isolated populations of the western gray squirrel (Sciurus griseus) in the Los Angeles area of southern California, an area that has experienced a recent and ongoing invasion by the non-native eastern fox squirrel (Sciurus niger), an urban-adapted species introduced a century ago. Away from its strongholds in the western Santa Monica Mountains, San Gabriel Mountains, and Santa Ana Mountains, the western gray squirrel is resident locally in both the Santa Susana and the Verdugo Mountains, in Griffith Park, in low hills at the eastern periphery of the San Gabriel ...


An Agent-Based Modeling Approach For Predicting The Behavior Of Bighead Carp (Hypophthalmichthys Nobilis) Under The Influence Of Acoustic Deterrence, Joey Gaudy, Craig Garzella Oct 2019

An Agent-Based Modeling Approach For Predicting The Behavior Of Bighead Carp (Hypophthalmichthys Nobilis) Under The Influence Of Acoustic Deterrence, Joey Gaudy, Craig Garzella

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


We Will Live Like People 250,000 Years Ago, Gregory J. Brock Sep 2019

We Will Live Like People 250,000 Years Ago, Gregory J. Brock

Gregory J. Brock

No abstract provided.


Food Sovereignty: An Alternative Paradigm For Poverty Reduction And Biodiversity Conservation In Latin America, M. Jahi Chappell, Hannah Wittman, Christopher M. Bacon, Bruce G. Ferguson, Luis Garcia Barrios, Raúl Garcia Barrios, Daniel Jaffee, Jefferson Lima, V. Ernesto Méndez, Helda Morales, Lorena Soto-Pinto, John Vandermeer, Ivette Perfecto Sep 2019

Food Sovereignty: An Alternative Paradigm For Poverty Reduction And Biodiversity Conservation In Latin America, M. Jahi Chappell, Hannah Wittman, Christopher M. Bacon, Bruce G. Ferguson, Luis Garcia Barrios, Raúl Garcia Barrios, Daniel Jaffee, Jefferson Lima, V. Ernesto Méndez, Helda Morales, Lorena Soto-Pinto, John Vandermeer, Ivette Perfecto

Daniel Jaffee

Strong feedback between global biodiversity loss and persistent, extreme rural poverty are major challenges in the face of concurrent food, energy, and environmental crises. This paper examines the role of industrial agricultural intensification and market integration as exogenous socio-ecological drivers of biodiversity loss and poverty traps in Latin America. We then analyze the potential of a food sovereignty framework, based on protecting the viability of a diverse agroecological matrix while supporting rural livelihoods and global food production. We review several successful examples of this approach, including ecological land reform in Brazil, agroforestry, milpa, and the uses of wild varieties in ...


Diversity And Abundance Of Soil Microbes Differ Along A Forest-Pasture Transect, Hannah Suli, Ashley Schumann, Cleo Bickley, Jasmine Rodriguez Sep 2019

Diversity And Abundance Of Soil Microbes Differ Along A Forest-Pasture Transect, Hannah Suli, Ashley Schumann, Cleo Bickley, Jasmine Rodriguez

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University

No abstract provided.


Isolation Of Caldatribacterium (Op9) And Investigation Of Its Potential Interactions With A Novel, Co-Cultivated Thermodesulfobacterium Species, Toshio Alvarado Sep 2019

Isolation Of Caldatribacterium (Op9) And Investigation Of Its Potential Interactions With A Novel, Co-Cultivated Thermodesulfobacterium Species, Toshio Alvarado

Electronic Theses, Projects, and Dissertations

Atribacteria (OP9), candidate phylum with no representatives in pure culture, is found in various anaerobic environments worldwide. “Caldatribacterium”, a lineage within Atribacteria that is predicted to be a strictly anaerobic sugar fermenter based on cultivation-independent genomic analyses, is currently being maintained in lab enrichment cultures with fucose as its sole growth substrate. Metagenomics and 16S rRNA gene tag sequencing indicated that the fucose culture was a co-culture of “Caldatribacterium” and an uncultivated member of the genus Thermodesulfobacterium. Due to failed attempts to isolate “Caldatribacterium” by dilution-to-extinction and plating, it was hypothesized that “Caldatribacterium” is dependent in some way on the ...


Using Single-Cell Sorting, Fish And 13c-Labeling To Cultivate And Assess Carbon Substrate Utilization Of ‘Aigarchaeota’ And Other Novel Thermophiles, Damon Kurtis Mosier Sep 2019

Using Single-Cell Sorting, Fish And 13c-Labeling To Cultivate And Assess Carbon Substrate Utilization Of ‘Aigarchaeota’ And Other Novel Thermophiles, Damon Kurtis Mosier

Electronic Theses, Projects, and Dissertations

‘Aigarchaeota’, a deeply branching lineage in the domain Archaea with no cultivated representatives, includes both thermophilic and hyperthermophilic microorganisms that reside in terrestrial and marine geothermal environments. The ‘Aigarchaeota’ consists of at least nine proposed genus-level groups that have been confirmed via 16S rRNA sequencing, with ‘Aigarchaeota’ Group 1 (AigG1) being the focus of this study. Based on cultivation-independent genomic data available from several AigG1 members in Great Boiling Spring (GBS), NV, and Yellowstone National Park, 22 different types of growth media were designed and tested for their ability to support growth of AigG1. One of these cultures, G1-10, was ...


Neotype Designation For Pectinibuthus Birulai Fet, 1984 (Scorpiones: Buthidae) From Turkmenistan, With Remarks On Pectine Teeth Of Psammophile Scorpions, Victor Fet, František Kovařík, Graeme Lowe Aug 2019

Neotype Designation For Pectinibuthus Birulai Fet, 1984 (Scorpiones: Buthidae) From Turkmenistan, With Remarks On Pectine Teeth Of Psammophile Scorpions, Victor Fet, František Kovařík, Graeme Lowe

Euscorpius

A neotype is designated for a very rare Central Asian scorpion, Pectinibuthus birulai Fet, 1984, the sole species of the genus Pectinibuthus Fet, 1984. It is the only currently known specimen, collected by Victor Fet in July 1985, and deposited in ZISP (St. Petersburg, Russia). The original types are considered lost. Detailed photographs of the neotype are provided, as well as comments on this unique psammophile buthid. We also discuss and compare pectinal tooth counts of psammophile scorpions relative to other scorpions.


Subsistence Strategies In Traditional Societies Distinguish Gut Microbiomes, Alexandra J. Obregon-Tito, Raul Y. Tito, Jessica Metcalf, Krithivasan Sankaranarayanan, Jose C. Clemente, Luke K. Ursell, Zhenjiang Zech Xu, Will Van Treuren, Rob Knight, Patrick M. Gaffney, Paul Spicer, Paul Lawson, Luis Marin-Reyes, Omar Trujillo-Villarroel, Morris Foster, Emilio Guija-Poma, Luzmila Troncoso-Corzo, Christina Warinner, Andrew T. Ozga, Cecil M. Lewis Jr. Aug 2019

Subsistence Strategies In Traditional Societies Distinguish Gut Microbiomes, Alexandra J. Obregon-Tito, Raul Y. Tito, Jessica Metcalf, Krithivasan Sankaranarayanan, Jose C. Clemente, Luke K. Ursell, Zhenjiang Zech Xu, Will Van Treuren, Rob Knight, Patrick M. Gaffney, Paul Spicer, Paul Lawson, Luis Marin-Reyes, Omar Trujillo-Villarroel, Morris Foster, Emilio Guija-Poma, Luzmila Troncoso-Corzo, Christina Warinner, Andrew T. Ozga, Cecil M. Lewis Jr.

Andrew Ozga

Recent studies suggest that gut microbiomes of urban-industrialized societies are different from those of traditional peoples. Here we examine the relationship between lifeways and gut microbiota through taxonomic and functional potential characterization of faecal samples from hunter-gatherer and traditional agriculturalist communities in Peru and an urban-industrialized community from the US. We find that in addition to taxonomic and metabolic differences between urban and traditional lifestyles, hunter-gatherers form a distinct sub-group among traditional peoples. As observed in previous studies, we find that Treponema are characteristic of traditional gut microbiomes. Moreover, through genome reconstruction (2.2–2.5 MB, coverage depth × 26 ...


Uncovering The True Diversity Of Chanterelles In Indiana, Jairus Chittenden Aug 2019

Uncovering The True Diversity Of Chanterelles In Indiana, Jairus Chittenden

The Journal of Purdue Undergraduate Research

No abstract provided.


A New Species Of Catalinia Soleglad Et Al., 2017 (Scorpiones: Vaejovidae) From Southern California, Usa, Rolando Teruel, Brandon Myers Aug 2019

A New Species Of Catalinia Soleglad Et Al., 2017 (Scorpiones: Vaejovidae) From Southern California, Usa, Rolando Teruel, Brandon Myers

Euscorpius

Herein we describe a new species of the vaejovid scorpion genus Catalinia Soleglad, Ayrey, Graham & Fet, 2017. It was collected in a single locality of the northwestern foothills of the Santa Ana Mountains. It is most closely related to both Catalinia andreas (Gertsch & Soleglad, 1972) and C. minima (Kraepelin, 1911), but is clearly distinguished by tegumentary sculpture, morphometric ratios and pectinal tooth counts. The new species is described and illustrated in detail, with some ecological data included; moreover, a minor correction is introduced to the diagnosis of the genus.


A New “Vorhiesi” Group Species Of Vaejovis From The Galiuro Mountains, Southern Arizona (Scorpiones: Vaejovidae), Richard F. Ayrey, Brandon Myers Aug 2019

A New “Vorhiesi” Group Species Of Vaejovis From The Galiuro Mountains, Southern Arizona (Scorpiones: Vaejovidae), Richard F. Ayrey, Brandon Myers

Euscorpius

A new scorpion species, Vaejovis stetsoni sp. n. is described from Galiuro Mountains, Graham County, Arizona. This is the smallest species of the “vorhiesi” group discovered so far, most similar to V. brysoni Ayrey & Webber. The pedipalp fixed finger has five ID denticles and the movable finger has six, like in most other southern Arizona Vaejovis. The most unique characteristics of this species are its small size (18.35 mm) and a large subaculear tubercle.


Scorpions Of Sri Lanka (Arachnida: Scorpiones). Part Iii. Heterometrus Yaleensis Sp. N. (Scorpionidae), František Kovařík, Kithsiri B. Ranawana, V. A. Sanjeewa Jayarathne, David Hoferek, František Šťáhlavský Aug 2019

Scorpions Of Sri Lanka (Arachnida: Scorpiones). Part Iii. Heterometrus Yaleensis Sp. N. (Scorpionidae), František Kovařík, Kithsiri B. Ranawana, V. A. Sanjeewa Jayarathne, David Hoferek, František Šťáhlavský

Euscorpius

Heterometrus yaleensis sp. n. from Sri Lanka, Southern Province, Yale National Park is described and compared with other species of the genus. The presence of a unique dorsointernal carina on the pedipalp chela distinguishes H. yaleensis sp. n. from all other Heterometrus species. Additional information is provided on the taxonomy and distribution of the genus Heterometrus in Sri Lanka, fully complemented with color photos of specimens of both sexes of the new species, as well as of their habitat. In addition to external morphology and hemispermatophore, we also describe the karyotype of H. yaleensis sp. n. (2n=99).


The Value Of Inspection Stations For Detecting Nonindigenous Species Lacking Agricultural Significance: The Mexican Treefrog, Smilisca Baudinii Complex (Duméril And Bibron 1841) (Hylidae), Interdicted In Florida, Usa, From A Shipment Of Peppers, Louis A. Somma Aug 2019

The Value Of Inspection Stations For Detecting Nonindigenous Species Lacking Agricultural Significance: The Mexican Treefrog, Smilisca Baudinii Complex (Duméril And Bibron 1841) (Hylidae), Interdicted In Florida, Usa, From A Shipment Of Peppers, Louis A. Somma

Papers in Herpetology

A Mexican Treefrog, Smilisca baudinii, a nonindigenous species, was interdicted for the first time from an imported shipment of peppers. The value of agriculture inspection stations used to make these interdictions is discussed. This is a single cargo interception (Stage 1: Colautti and MacIsaac 2004) and the first record for S. baudinii intercepted in Florida. Currently no evidence suggests that S. baudinii has been successfully introduced into and established in Florida, although this species could survive climatic conditions in the southern part of the state and at the scheduled destination of this shipment.

Cargo transport of alien species is a ...


Seed And Seedling Data From Sugarcreek Metropark Restoration Experiment, Michaela J. Woods, Meredith Cobb, Ryan W. Mcewan Aug 2019

Seed And Seedling Data From Sugarcreek Metropark Restoration Experiment, Michaela J. Woods, Meredith Cobb, Ryan W. Mcewan

Five Rivers MetroParks Collaboration Data Archive

This dataset encompasses information following seed germination and seedling growth of three tree species: Quercus rubra, Juglans cinerea, and Carya laciniosa. Seed sizes were recorded prior to incubation in sand, vermiculite, or without media. Seeds were then germinated with time to germination recorded in this dataset. After germination, seedlings were planted in Sugarcreek Metropark in either fall 2011 or spring 2012. One-half of seedlings were planted in tree tubes and a half without. Seedling height and diameter was recorded in June 2014 and March 2019, and death of seedlings was noted.


Data Files Column Key: Effects Of Amur Honeysuckle (Lonicera Maackii) On Headwater Streams, Julia I. Chapman, Eric B. Borth, Ryan W. Mcewan Jul 2019

Data Files Column Key: Effects Of Amur Honeysuckle (Lonicera Maackii) On Headwater Streams, Julia I. Chapman, Eric B. Borth, Ryan W. Mcewan

Ryan McEwan

Document provides a description for each column heading used in the data files contained in the collection "Effects of Amur Honeysuckle (Lonicera maackii) on Headwater Streams."

File is in comma-separated values (.csv) format; to view the file in Excel (.xlsx), see the supplemental file.


Growing On A Scar: Genetic Variation Of Achillea Millefolium Near Meeker, Colorado, Ace Spitzer Jul 2019

Growing On A Scar: Genetic Variation Of Achillea Millefolium Near Meeker, Colorado, Ace Spitzer

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

Mining operations deposit high concentrations of heavy metals such as lead, cadmium, arsenic, and vanadium into the topsoil of an ecosystem. These toxic metals can affect plant health and behavior, causing local extinction and shifts in ecosystem dynamics. However, genetic analyses of some plants growing on toxic soil conditions indicate higher genetic diversity than would be expected in that environment. Determining the effects of soil pollution on plants is important to determine a species’ utility in conservation and restoration. This investigation compared the genetic diversity of western yarrow (Achillea millefolium, Asteraceae), growing near a mine with vanadium and arsenic contamination ...


A Tentative List Of The Land Snails Of Georgia, U.S.A., Zachary I. Felix, Michael A. Dubuc, Hassan A. Rana Jul 2019

A Tentative List Of The Land Snails Of Georgia, U.S.A., Zachary I. Felix, Michael A. Dubuc, Hassan A. Rana

Georgia Journal of Science

Because of their high ecological and conservation value, and because we know so little about the group, we compiled a systematic if tentative list of land snails from the state of Georgia. After gleaning a list of species from a monograph on the land snails of eastern United States, written by Leslie Hubricht in 1985, we realized that many species whose ecological requirements are found in Georgia had not been documented there. Therefore, we developed a qualitative model to predict the likelihood that these candidate species occur in Georgia and would eventually be documented. We tested the model with collections ...


Position-Specific Metabolic Probing And Metagenomics Of Microbial Communities Reveal Conserved Central Carbon Metabolic Network Activities At High Temperatures, Scott C. Thomas, Kevin O. Tamadonfar, Cale O. Seymour, Dengxun Lai, Jeremy A. Dodsworth, Senthil K. Murugapiran, Emiley A. Eloe-Fadrosh, Paul Dijkstra, Brian P. Hedlund Jul 2019

Position-Specific Metabolic Probing And Metagenomics Of Microbial Communities Reveal Conserved Central Carbon Metabolic Network Activities At High Temperatures, Scott C. Thomas, Kevin O. Tamadonfar, Cale O. Seymour, Dengxun Lai, Jeremy A. Dodsworth, Senthil K. Murugapiran, Emiley A. Eloe-Fadrosh, Paul Dijkstra, Brian P. Hedlund

Life Sciences Faculty Publications

Temperature is a primary driver of microbial community composition and taxonomic diversity; however, it is unclear to what extent temperature affects characteristics of central carbon metabolic pathways (CCMPs) at the community level. In this study, 16S rRNA gene amplicon and metagenome sequencing were combined with 13C-labeled metabolite probing of the CCMPs to assess community carbon metabolism along a temperature gradient (60–95°C) in Great Boiling Spring, NV. 16S rRNA gene amplicon diversity was inversely proportional to temperature, and Archaea were dominant at higher temperatures. KO richness and diversity were also inversely proportional to temperature, yet CCMP genes were similarly ...


The Multifaceted Effects Induced By Floods On The Macroinvertebrate Communities Inhabiting A Sinking Cave Stream, Octavian Pacioglu, Nicoleta Ianovici, Mărioara N. Filimon, Adrian Sinitean, Gabriel Iacob, Henrietta Barabas, Alexandru Pahomi, Andrei Acs, Hanelore Muntean, Lucian Pârvulescu Jul 2019

The Multifaceted Effects Induced By Floods On The Macroinvertebrate Communities Inhabiting A Sinking Cave Stream, Octavian Pacioglu, Nicoleta Ianovici, Mărioara N. Filimon, Adrian Sinitean, Gabriel Iacob, Henrietta Barabas, Alexandru Pahomi, Andrei Acs, Hanelore Muntean, Lucian Pârvulescu

International Journal of Speleology

First-order sinking cave streams experience considerable hydrological variability, including spates and periods of base-flow during dry seasons. Early-summer flooding on a first-order stream sinking in Ciur-Ponor Cave (Romania) represented a suitable opportunity to test the response of the macroinvertebrate community and of basal food resources quantity and diversity to such a disturbance event. The invertebrate community and basal resources (i.e., woody debris, leaves, fine particulate organic matter and epilithon) were collected from three sampling sites, before and after the flood. The sampling strategy followed an up-downstream gradient of both species diversity and quantity of allochtonous organic matter decrease as ...


Species-Area Model Predicting Diversity Loss In An Artificially Flooded Cave In Brazil, Rodrigo L. Ferreira, Thais G. Pellegrini Jul 2019

Species-Area Model Predicting Diversity Loss In An Artificially Flooded Cave In Brazil, Rodrigo L. Ferreira, Thais G. Pellegrini

International Journal of Speleology

Subterranean environments are poorly known regarding many ecological aspects, such as community structure and its response to different disturbances. To estimate the effects of ground area lost in a limestone cave community in Southeastern Brazil, the invertebrate fauna was sampled before 76% of the cave floor was submerged by the filling of a hydroeletric power plant reservoir. Then, a 2-year monitoring was conducted. A species-area curve based on empiric data was constructed and the z-value of the species-area equation was calculated, what allowed estimating the expected cave richness after flooding comparing with data obtained during the monitoring. The results support ...


Beyond The Black Box: Promoting Mathematical Collaborations For Elucidating Interactions In Soil Ecology, Alison E. Bennett, Lori Biederman, Matthew Warren, Et Al. Jul 2019

Beyond The Black Box: Promoting Mathematical Collaborations For Elucidating Interactions In Soil Ecology, Alison E. Bennett, Lori Biederman, Matthew Warren, Et Al.

Ecology, Evolution and Organismal Biology Publications

Understanding soil systems is critical because they form the structural and nutritional foundation for plants and thus every terrestrial habitat and agricultural system. In this paper, we encourage increased use of mathematical models to drive forward understanding of interactions in soil ecological systems. We discuss several distinctive features of soil ecosystems and empirical studies of them. We explore some perceptions that have previously deterred more extensive use of models in soil ecology and some advances that have already been made using models to elucidate soil ecological interactions. We provide examples where mathematical models have been used to test the plausibility ...


Diversity Of The Brown Alga Dictyota Between Deep And Shallow Reefs Of Hawaii, Mary Ade, Rachael M. Wade, Heather L. Spalding, Alison R. Sherwood Jun 2019

Diversity Of The Brown Alga Dictyota Between Deep And Shallow Reefs Of Hawaii, Mary Ade, Rachael M. Wade, Heather L. Spalding, Alison R. Sherwood

Celebration of Learning

In this presentation, I compile the results of 10 weeks of an NSF-funded REU during the summer of 2018. This research is regarding the biodiversity of Dictyota species found in the mesophotic and shallow reef ecosystems in the Hawaiian islands.


Hawk On Wire: Ecopoems By Scott T. Starbuck, Vivian M. Hansen Jun 2019

Hawk On Wire: Ecopoems By Scott T. Starbuck, Vivian M. Hansen

The Goose

Review of Scott T. Starbuck’s Hawk on Wire: Ecopoems


Review Of Hottentotta Described By A. A. Birula, With Descriptions Of Two New Species And Comments On Birula’S Collection (Scorpiones: Buthidae), František Kovařík, Ersen Aydın Yağmur, Victor Fet Jun 2019

Review Of Hottentotta Described By A. A. Birula, With Descriptions Of Two New Species And Comments On Birula’S Collection (Scorpiones: Buthidae), František Kovařík, Ersen Aydın Yağmur, Victor Fet

Euscorpius

The types of Hottentotta species described by A. A. Birula and deposited in the Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia are revised. The types of H. buchariensis (Birula, 1897), H. niloticus (Birula, 1928), H. penjabensis (Birula, 1897) stat. nov. and H. schach (Birula, 1905) are fully illustrated with color photographs of morphology. Their taxonomic position is discussed. Lectotypes are designated for H. niloticus and H. schach. We confirm synonymy of Buthus (Hottentotta) minax niloticus Birula, 1928 (Sudan) with Buthus minax L. Koch, 1875, syn. n. Two new species, Hottentotta juliae sp. n. from Iran (Fars Province) and ...


Culture-Based Analysis Of ‘Cave Silver’ Biofilms On Rocks In The Former Homestake Mine In South Dakota, Usa, Amanpreet K. Brar, David Bergmann Jun 2019

Culture-Based Analysis Of ‘Cave Silver’ Biofilms On Rocks In The Former Homestake Mine In South Dakota, Usa, Amanpreet K. Brar, David Bergmann

International Journal of Speleology

Tunnels in a warm, humid area of the 1478 m level of the Sanford Underground Research Facility (SURF), located in a former gold mine in South Dakota, USA, host irregular, thin whitish, iridescent biofilms, which appear superficially similar to ‘cave silver’ biofilms described from limestone and lava tube caves, despite the higher rock temperature (32°C) and differing rock surface (phyllite) present at SURF. In this study, we investigated the diversity of cultivable bacteria constituting the cave silver by using several media: CN agar, CN gellan gum and 0.1X R2A agar. The highest colony count (CFU/g of sample ...


Genetic Sequencing For Measuring Biodiversity In Recent And Ancient Marine Sediments, Lauren Judge May 2019

Genetic Sequencing For Measuring Biodiversity In Recent And Ancient Marine Sediments, Lauren Judge

Celebration of Learning

Taxonomic biodiversity, measured by counting the number of species present in a given area, is the most common method of capturing ecosystem biodiversity in recent and ancient environments. While this method is widely accepted, it is limited by poor preservation and identification of many individuals, making it impossible to include every species within an ecosystem and resulting in the loss of some diversity information. To address this issue, we measured the genetic biodiversity (in which species are determined based on sequencing of their DNA) of shallow marine ecosystems by extracting and sequencing the 18S ribosomal gene from bulk carbonate sediment ...


Cultivating Knowledge: Agrarian Science And Ecological Engagements In Southern Ontario Agriculture, Kelly Linton May 2019

Cultivating Knowledge: Agrarian Science And Ecological Engagements In Southern Ontario Agriculture, Kelly Linton

Electronic Thesis and Dissertation Repository

Agriculture and climate change are interconnected processes, with agriculture implicated in rising green house gas emissions, deforestation, soil and water pollution, and reductions in biodiversity. Conversely, changes within ecology (including a warming climate), alter growing conditions for farmers. Farmers face changes in both temperature and precipitation, as well as an increase in adverse weather events that significantly threaten productivity and livelihoods.

Based on 40 unstructured interviews as well as informal conversations conducted among farmers in southern Ontario, Canada between the spring of 2014 and the winter of 2017, this dissertation seeks to contribute to a growing body of work that ...


Fire History Of A Georgia Montane Longleaf Pine (Pinus Palustris) Community, Nathan Klaus May 2019

Fire History Of A Georgia Montane Longleaf Pine (Pinus Palustris) Community, Nathan Klaus

Georgia Journal of Science

Montane longleaf pine forests, woodlands, and savannas are endangered, fire-dependent ecosystems of the Piedmont, Ridge and Valley, Appalachian, and Cumberland Plateau physiographic provinces of Georgia, Alabama, and North Carolina. Compared to other longleaf pine ecosystems, e.g., longleaf pine-wiregrass, little has been published about montane longleaf pine ecosystems. Understanding the historic fire regimes that once maintained montane longleaf pine ecosystems is an important first step toward achieving restoration and conservation goals for this ecosystem. I used two approaches to investigate historic fire regimes: 1) a dendrochronological study of fire scars on Sprewell Bluff Natural Area and 2) calculations of the ...


Review Of Grosphus Simon, 1880, With Description Of Teruelius Gen. N., A New Buthid Genus From Madagascar (Scorpiones: Buthidae), Graeme Lowe, František Kovařík May 2019

Review Of Grosphus Simon, 1880, With Description Of Teruelius Gen. N., A New Buthid Genus From Madagascar (Scorpiones: Buthidae), Graeme Lowe, František Kovařík

Euscorpius

We review the taxonomy of the Madagascar endemic buthid genus Grosphus Simon, 1880. We split the genus and describe Teruelius gen. n. on the basis of nine morphological characters, six of them new for Grosphus: positions of trichobothria d2 on pedipalp femur and Eb3 on chela manus, number of pectine teeth, shape of female basal pectinal tooth, form of hemispermatophore capsule posterior lobe, spiracle shape, metasoma I ventromedian carination, telotarsal setation and UV fluorescence. We discuss functional and taxonomic aspects of these characters, and propose that Teruelius gen. n. is monophyletic, while Grosphus (sensu stricto) is paraphyletic. Some ...