Life Sciences Commons^™

Effectiveness Of Endothall Treatment In Reducing Potamogeton Crispus In Lake Julia, Jake Sorensen

Journal of Earth and Life Science

Curly leaf pondweed Potamogeton crispus, is a submerged aquatic plant non-native to North America. It was most likely introduced when common carp Cyprinus carpio were intentionally brought to the Midwest. Endothall is an aquatic herbicide commonly used to control curlyleaf pondweed in lakes. This study focused on collecting data from Lake Julia in Sherburne County, MN. Lake Julia is treated annually in the spring to control curlyleaf pondweed. The results show treatment areas saw a significant increase in vegetation density compared to control areas (P < 0.01). Changes in percent vegetation coverage by date were insignificant (P = 0.24). No significant signs of fish kills were observed. Because this study looked at overall vegetation coverage instead of specifically curlyleaf pondweed, we cannot conclude the increase in vegetation coverage was from curlyleaf pondweed alone. Based on the results from Poovey et al. (2002) we would expect lower vegetation coverage in treatment areas instead of the increased vegetation coverage observed in our study. This suggests the possibility that the endothall treatment successfully killed curlyleaf pondweed in treated areas, which allowed for new growth of submerged aquatic plants to take place as water temperatures increased.

Comparative Biogeography And The Evolution Of Population Structure For Bottlenose And Common Dolphins In The Indian Ocean, Howard W.I. Gray, Ing Chen, André E. Moura, Ada Natoli, Shin Nishida, Shinsuke Tanabe, Gianna Minton, Louisa S. Ponnampalam, Muhammad S. Kiani, Ross Culloch, Mauvis Gore, Anna Särnblad, Omar Amir, Per Berggren, Tim Collins, Andrew J. Willson, Robert Baldwin, A. Rus Hoelzel

All Works

Aim: In the marine environment, where there are few physical boundaries to gene flow, there is often nevertheless intraspecific diversity with consequences for effective conservation and management. Here, we compare two closely related dolphin species with a shared distribution in the Indian Ocean (IO) to better understand the biogeographic drivers of their population structure. Location: Global oceans and seas with a focus on the Indian Ocean. Taxon: Tursiops sp. and Delphinus sp. Methods: Bayesian, ordination, assignment, statistical and phylogenetic analyses to assess phylogeography, connectivity and population structure using microsatellite and mitochondrial DNA genetic markers. Results: Both Tursiops sp. and Delphinus …

Spatial And Non-Spatial Patterns Of Genetic Diversity In Neotropical Bats, Andrea J. Calderon Brito

Dissertations and Theses

Macroecological studies that predict genetic diversity and its correlation with other biodiversity dimensions are essential to conservation in a rapidly changing environment. However, in bats (order Chiroptera), studies associating abiotic or ecological traits that could help to predict genetic diversity are scarce, even for singular species. In the Neotropics, the highest concentration of mammal and amphibian genetic diversity has been found in the Andes mountains and the Amazon Rainforest, yet it is an open question whether bat genetic diversity is also higher in these regions, or even if any abiotic factors are correlated with bat genetic diversity. Additionally, it is …

New Additions To Turkish Mycota From Ankara, Balıkesir, And Kütahya Provinces, Deni̇z Altuntaş, Fuat Bozok, Hatira Taşkin, Şanli Kabaktepe, Hakan Alli, Ilgaz Akata

Turkish Journal of Botany

The current research was conducted on the fungal materials collected from Ankara, Balıkesir, and Kütahya provinces between 2015 and 2019. As a result of the field and laboratory studies, Conocybe dentatomarginata, Entoloma lampropus, Lactarius lilacinus, Otidea nannfeldtii and Sarcopeziza sicula are reported for the first time from Turkey based on macro- and micromorphological studies and internal transcribed spacer (ITS) rDNA-based molecular phylogeny. Descriptions of new records are provided together with photos showing their macro and micro-morphology.

Conifer Encroachment And Removal In A Northern California Oak Woodland: Influences On Ecosystem Physiology And Biodiversity, Gabriel S. Goff

Cal Poly Humboldt theses and projects

Oregon white oak (Quercus garryana) woodlands across their range are becoming increasingly threatened by encroaching Douglas-fir encroachment (Pseudotsuga menziesii) as a result of fire exclusion. Using water potential (Ψ), stomatal conductance (g_s), xylem water stable isotopes (dD), and three metrics of biodiversity, this study investigates the effects of conifer encroachment and removal at the ecosystem-scale. The study was set in an Oregon white oak woodland in northern California and compared three levels of encroachment before and after conifer removal. Findings indicate that heavily encroached stands have the least amount of water stress and gas …

Rivfishtime: A Global Database Of Fish Time-Series As A Currency For Global Change Ecology Research In Riverine Systems, Lise Comte, Juan Carvajal-Quintero, Pablo A. Tedesco, Ulrich Brose, Tibor Erős, Ana F. Filipe, Marie-Josée Fortin, Katie Irving, Claire Jacquet, Christopher M. Taylor

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Motivation

We compiled a global database of long-term riverine fish surveys from 46 regional and national monitoring programmes and from individual academic research efforts, with which numerous basic and applied questions in ecology and global change research can be explored. Such spatially and temporally extensive datasets have been lacking for freshwater systems in comparison to terrestrial ones.

Main types of variables contained

The database includes 11,386 time-series of riverine fish community catch data, including 646,270 species-specific abundance records, together with metadata related to the geographical location and sampling methodology of each time-series.

Spatial location and grain

The database contains 11,072 …

Review Of Carpophilus (Ecnomorphus) Motschulsky, 1858 (Coleoptera: Nitidulidae: Carpophilinae) In The West Indies, Gareth S. Powell, Kyle E. Schnepp

Insecta Mundi

Two new species of Carpophilus Stephens, 1829 in the subgenus Ecnomorphus Motschulsky, 1858 (Coleoptera: Nitidulidae) were recovered in material from the Caribbean. Descriptions and detailed diagnoses are provided for Carpophilus (Ecnomorphus) jamaicensis Powell and Schnepp, new species and Carpophilus (Ecnomorphus) thomasi Powell and Schnepp, new species. A key to the Carpophilus (Ecnomor­phus) of the West Indies is appended.

The family Nitidulidae Latreille is distributed throughout the world and reported broadly throughout the West Indies (Blackwelder 1945). The family represents one of the most diverse lineages of cucujoid beetles; however, the group remains one of …

A New Species Of Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) From The Southeastern United States, With A Lectotype Designation, Kyle E. Schnepp, Krystal L. Ashman

Insecta Mundi

A new species of Ataenius Harold, Ataenius thomasi Schnepp and Ashman (Coleoptera: Scara­baeidae: Aphodiinae), from Florida, Georgia, and Mississippi, U.S.A. is described. The lectotype for Ataenius brevis Fall is designated.

In the United States and Canada the genus Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) contains 46 species (Stebnicka 2007; Smith 2009). The most recent faunal review of this genus in these countries was completed by Cartwright (1974). However, several species in that paper have been moved to other genera or syn­onymized (Stebnicka 2007). Stebnicka and Lago (2005) provide a key and catalog to the Ataenius strigatus group. Specimens of a putative …

Maintaining Grassland Biodiversity While Controlling The Shrub Rhus Glabra, James Stubbendieck, Kay L. Kottas

IGC Proceedings (1977-2023)

No abstract provided.

Hunting Contests In New York State, Tyler Caffrey

Honors College Theses

The world is currently in a biodiversity crisis and hunting contests cannot continue. Hunting contests are not legitimate wildlife management tools, but exist for entertainment and killing for a prize. Many of the species targeted can be killed without bag limits. Additionally, many wildlife management practices are retroactive, meaning they are in response to an issue. Within New York State, these contests are not regulated by the NYSDEC beyond adhering to hunting regulations. With these factors together, animals targeted by these contests can be hunted to a detrimental point, and then management agencies would step in. These contests face significant …

Population Structure Of A Federally Endangered Plant (Astragalus Jaegerianus Munz, Fabaceae) With Limited Range Using Microsatellites, Sueann Neal

Electronic Theses, Projects, and Dissertations

Studies on population genetics examine the relationship and effects of population structure, migration, gene flow and demographic history, and are therefore important in the conservation of endangered species. Astragalus jaegerianus, a critically federally endangered species found in a geographically restricted range is investigated to determine population structure and genetic variation. Previous research on A. jaegerianus focused on DNA sequence data for cpDNA and nrDNA showed no variation. Further research on A. jaegerianus utilizing AFLP’s on the whole genome indicated substantial gene diversity and population structure consistent with geographically widespread species. AFLP research is a cost-effective process to identify levels …

Research On The Relationship Between Climate And Plant Community In North Grassland Of China, Xuebiao Pan, Yurong Wei, Buju Long, Zhihua Pan

IGC Proceedings (1977-2023)

No abstract provided.

Climate And Grazing Interact To Control Rangeland Vegetative Characteristics At A Regional Scale On The Tibetan Plateau, Julia A. Klein, J. Harte, X. Q. Zhao

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Grazing And Re‐Establishment Of Native Species On Soil Organic Matter Sequestration For The Semiarid Central Grasslands Of Canada, A. D. Iwaasa, B. Mcconkey, Michael P. Schellenberg

IGC Proceedings (1977-2023)

No abstract provided.

Genomic Evidence Suggests Further Changes Of Butterfly Names, Jing Zhang, Qian Cong, Jinhui Shen, Pal A. Opler, Nick V. Grishin

The Taxonomic Report of the International Lepidoptera Survey

Further genomic sequencing of butterflies by our research group expanding the coverage of species and specimens from different localities, coupled with genome-scale phylogenetic analysis and complemented by phenotypic considerations, suggests a number of changes to the names of butterflies, mostly those recorded from the United States and Canada. Here, we present evidence to support these changes. The changes are intended to make butterfly classification more internally consistent at the genus, subgenus and species levels. That is, considering all available evidence, we attempt to assign similar taxonomic ranks to the clades of comparable genetic differentiation, which on average is correlated with …

Contributions To The Knowledge Of Water Bugs In Mindoro Island, Philippines, With A Species Checklist Of Nepomorpha And Gerromorpha (Insecta, Hemiptera, Heteroptera), Arthien Lovell Pelingen, Herbert Zettel, Clister V. Pangantihon, Kyra Mari Dominique Aldaba, Earl Kevin Fatallo, Jemillie Madonna De Leon, Hendrik Freitag

Biology Faculty Publications

This survey aims to provide an updated species checklist of aquatic and semi-aquatic bugs in the intra-Philippine biogeographic Region of Mindoro. An assessment survey of water bugs (Hemiptera, Heteroptera) was conducted mostly by manual collection in selected areas of Oriental Mindoro from 2017 to 2018, in which some of the collecting activities were undertaken by graduate students of Ateneo de Manila University. Twenty-nine aquatic and semi-aquatic heteropteran species were documented and some are known island-endemic species or subspecies, including Enithares martini mindoroensis Nieser & Zettel, 1999, Hydrotrephes stereoides mindoroensis Zettel, 2003, Aphelocheirus freitagi Zettel & Pangantihon, 2010, Rhagovelia mindoroensis Zettel, …

Restoring The Biodiversity Of The Roggeveld‐Renosterveld: Evaluation, Multiplication And Establishment Of Indigenous Plant Species On Old Agricultural Fields, J. C. Botha, C. F. Cupido, N. Visser

IGC Proceedings (1977-2023)

No abstract provided.

Anthropogenic Change On The Distribution Of Marine Megafauna And Their Prey, Baylie Fadool

Honors Program: Senior Projects (Public)

Anthropogenic change is impacting the distribution and survival of marine megafauna and their prey. Humans are changing every aspect of the marine environment, with effects reaching as large as changing the composition of marine environments to directly overexploiting species through the fishing industry. The role that marine megafauna play in balancing ecosystems, including as top apex predators, leads to detrimental results in the absences and population declines of these species. Migrations and declines due to threats on marine apex predator species will alter their environments by causing mesopredator release and changes in community structure, which is often associated with reduced …

Assessment Of Plant Biodiversity In The Over Grazed Marginal Lands Of Kovilpatti, M. Ramamoorthy, I. S. Krishnasamy

IGC Proceedings (1977-2023)

No abstract provided.

General Destabilizing Effects Of Eutrophication On Grassland Productivity At Multiple Spatial Scales, Yann Hautier, Pengfei Zhang, Michel Loreau, Kevin R. Wilcox, Eric W. Seabloom, Elizabeth T. Borer, Jarrett E.K. Byrnes, Sally E. Koerner, Kimberly J. Komatsu, Jonathan S. Lefcheck, Andy Hector, Peter B. Adler, Juan Alberti, Carlos A. Arnillas, Jonathan D. Bakker, Lars A. Brudvig, Miguel N. Bugalho, Marc Cadotte, Maria C. Caldeira, Oliver Carroll, Mick Crawley, Scott L. Collins, Pedro Daleo, Laura E. Dee, Nico Eisenhauer, Anu Eskelinen, Philip A. Fay, Benjamin Gilbert, Amandine Hansar, Forest Isbell, Johannes M.H. Knops, Andrew S. Macdougall, Rebecca L. Mcculley, Joslin L. Moore, John W. Morgan, Akira S. Mori, Pablo L. Peri, Edwin T. Pos, Sally A. Power, Jodi N. Price, Peter B. Reich, Anita C. Risch, Christiane Roscher, Mahesh Sankaran, Martin Schütz, Melinda Smith, Carly Stevens, Pedro M. Tognetti, Risto Virtanen, Glenda M. Wardle, Peter A. Wilfahrt, Shaopeng Wang

Wildland Resources Faculty Publications

Eutrophication is a widespread environmental change that usually reduces the stabilizing effect of plant diversity on productivity in local communities. Whether this effect is scale dependent remains to be elucidated. Here, we determine the relationship between plant diversity and temporal stability of productivity for 243 plant communities from 42 grasslands across the globe and quantify the effect of chronic fertilization on these relationships. Unfertilized local communities with more plant species exhibit greater asynchronous dynamics among species in response to natural environmental fluctuations, resulting in greater local stability (alpha stability). Moreover, neighborhood communities that have greater spatial variation in plant species …

Health And Disease Markers Correlate With Gut Microbiome Composition Across Thousands Of People., Ohad Manor, Chengzhen L Dai, Sergey A Kornilov, Brett Smith, Nathan D Price, Jennifer C Lovejoy, Sean M Gibbons, Andrew T Magis

Articles, Abstracts, and Reports

Variation in the human gut microbiome can reflect host lifestyle and behaviors and influence disease biomarker levels in the blood. Understanding the relationships between gut microbes and host phenotypes are critical for understanding wellness and disease. Here, we examine associations between the gut microbiota and ~150 host phenotypic features across ~3,400 individuals. We identify major axes of taxonomic variance in the gut and a putative diversity maximum along the Firmicutes-to-Bacteroidetes axis. Our analyses reveal both known and unknown associations between microbiome composition and host clinical markers and lifestyle factors, including host-microbe associations that are composition-specific. These results suggest potential opportunities …

Spatial And Temporal Dynamics Of Human–Wildlife Conflicts In The Kenya Greater Tsavo Ecosystem, Joseph M. Mukeka, Joseph O. Ogutu, Erustus Kanga, Eivin Røskaft

Human–Wildlife Interactions

Biodiversity conservation in developing countries is faced with many and mounting challenges, including increasing human–wildlife conflicts (HWCs). In Africa and other developing countries, increasing HWCs, particularly those adjacent to protected areas, can adversely affect local stakeholder perceptions and support for conservation. We analyzed HWC reports for multiple wildlife species compiled >23 years (1995–2017) from the Greater Tsavo Ecosystem (GTE) in Kenya to determine HWC trends. The GTE is the largest protected area in Kenya, covering 22,681 km². Overall, 39,022 HWC incidents were reported in 6 GTE regions (i.e., Taveta, Mutomo, Kibwezi, Rombo, Galana, Bachuma). The 5 wildlife species …

The Role Of Management In Maintaining Grassland Sustainability In The Carpathian Mountains From Romania, V. Vintu, C. Samuil, T. Iacob, Gh. Saghin, E. G. Teodorescu

IGC Proceedings (1977-2023)

No abstract provided.

Cymbopogon Nardus, A Grass Weed In The Rangelands Of Uganda: Impact On Plant Species Biodiversity And Livestock Performance, S. G. Byenkya, C. Ebong, C. Sudhe, J. Kigongo

IGC Proceedings (1977-2023)

No abstract provided.

Biodiversity, Vegetation Measurements, And Rehabilitation Of Foothills Of Khanasser Valley (Southeast Of Aleppo), A. Khatib Salkini, M. Audat, J. Tiedeman

IGC Proceedings (1977-2023)

No abstract provided.

Host-Use Patterns Of Canopy-Inhabiting Click Beetles (Coleoptera: Elateridae) In A Lowland Rainforest In Southern Venezuela, Susan Kirmse, Paul J. Johnson

Insecta Mundi

The arboreal click beetle fauna (Coleoptera: Elateridae) in a lowland tropical rainforest in south­ern Venezuela was observed and collected by means of a tower crane for a full year. The evaluation of the elaterid assemblage is part of a general survey of Coleoptera associated with several canopy trees. The Elat­eridae represented the tenth most species-rich beetle family in the canopy of the crane plot and was therefore selected for a detailed analysis of host-use patterns. In total, 20 species of Elateridae with 402 adult indi­viduals were sampled, including seven singletons. Species were either flower visiting (Aeolus Eschscholtz and Cosmesus …

Assessing Resource Condition In Grazing Lands: How Do Different Indicators Compare?, John G. Mcivor, C. K. Mcdonald, Neil D. Macleod

IGC Proceedings (1977-2023)

No abstract provided.

Biotools: Indicators For Biodiversity Outcomes Of Grazing Practices In The Australian Rangelands, Alexander Kutt, E. P. Vanderduys, I. J. Gordon

IGC Proceedings (1977-2023)

No abstract provided.

New Approaches To Measuring The Functional Value Of Biodiversity In Plant Communities, John Connolly, Caroline Brophy, J. A. Finn, Laura Kirwan, Andreas Lüscher, T. Sebastia, A. Weigelt

IGC Proceedings (1977-2023)

No abstract provided.

Grazing Disturbance A Benefit To Species Diversity In Re‐Established Native Grass Stands, Michael P. Schellenberg, Alan D. Iwaasa

IGC Proceedings (1977-2023)

No abstract provided.