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Articles 601 - 630 of 1096

Full-Text Articles in Life Sciences

Differentiating The Neches River Rose Mallow (Hibiscus Dasycalyx) From Its Congeners By Means Of Phylogenetics And Population Genetics, Julia Norrell May 2017

Differentiating The Neches River Rose Mallow (Hibiscus Dasycalyx) From Its Congeners By Means Of Phylogenetics And Population Genetics, Julia Norrell

Biology Theses

This study used molecular phylogenetic methods to attempt to resolve the taxonomic status of the federally threatened East Texas-endemic wildflower, the Neches River Rose Mallow (Hibiscus dasycalyx). Hibiscus dasycalyx co-occurs with two other closely related congeners that are currently not of conservation concern: the halberdleaf rose mallow (H. laevis); and the crimson-eyed rose mallow (H. moscheutos). This study assessed the phylogeny of these three Hibiscus species, and attempted to determine if there is possible hybridization occurring between them. To this end, Restriction Site Associated DNA Sequencing (RAD-Seq), a Next Generation Sequencing method, was used …

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Understanding The Past, Present, And Future Of Land Conservation In South Carolina, Nicole Berson May 2017

Understanding The Past, Present, And Future Of Land Conservation In South Carolina, Nicole Berson

Graduate Theses

Urbanization poses a significant challenge for many ecosystems in the United States. However, monitoring its impacts requires extensive data and this lack of up-to-date information makes understanding the impacts of urbanization difficult to assess. One area that has seen tremendous growth is the Interstate 85 (I-85) corridor between Charlotte, NC and Atlanta, GA, which is known as “The Boom Belt.” Unfortunately, due to limited resources from conservation and state agencies, data on land use change and its impacts in this area have not been updated since the early 1990s. To investigate how urbanization is impacting this region, I conducted a …

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Evaluating Habitat-Based Niche Requirements And Potential Recruitment Bottlenecks For Imperiled Bluehead Sucker (Catostomus Discobolus), Bryan C. Maloney May 2017

Evaluating Habitat-Based Niche Requirements And Potential Recruitment Bottlenecks For Imperiled Bluehead Sucker (Catostomus Discobolus), Bryan C. Maloney

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Changes to rivers that alter physical and thermal habitat may cause fish population abundance to decline, due to fewer individuals maturing and entering the adult population. The Weber River has become highly degraded with many dams and diversions altering fish habitat, river volume, velocity, and temperature, and limiting movement between reaches. Bluehead suckers (Catostomus discobolus) occupy only 47% of their historical range and the genetically-distinct Weber River (northern UT) population is declining and contains few young, juvenile fish. My objectives were to determine whether spawning and rearing habitat available in the Weber River may be limiting bluehead sucker …

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Niche Modeling For The Giant Panda, Ailuropoda Melanoleuca, And The Original Panda, Ailurus Fulgens: Habitat Preferences And Evolutionary Consequences, Lauren M. Lyon May 2017

Niche Modeling For The Giant Panda, Ailuropoda Melanoleuca, And The Original Panda, Ailurus Fulgens: Habitat Preferences And Evolutionary Consequences, Lauren M. Lyon

Electronic Theses and Dissertations

The well-known symbol for conservation, the giant panda bear, and the original red panda have been forced into remote habitats due to anthropogenic disturbance, making ecological study difficult. Therefore the first known species distribution model was created to predict the most likely areas of occurrence within the known range of these elusive animals. These models were then projected onto North America and evaluated against existing breeding programs. Additionally, the close proximity of the Gray Fossil Site and the discovery of the most complete fossil red panda specimens in the world allowed ecomorphological comparisons between the modern red panda, Ailurus fulgens …

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The Effect Of Insects On Seed Set Of Ozark Chinquapin, Castanea Ozarkensis, Colton Zirkle May 2017

The Effect Of Insects On Seed Set Of Ozark Chinquapin, Castanea Ozarkensis, Colton Zirkle

Graduate Theses and Dissertations

Ozark chinquapin (Castanea ozarkensis), once found throughout the Interior Highlands of the United States, has been decimated across much of its range due to accidental introduction of chestnut blight, Cryphonectria parasitica. Efforts have been made to conserve and restore C. ozarkensis, but success requires thorough knowledge of the reproductive biology of the species. Other Castanea species are reported to have characteristics of both wind and insect pollination, but pollination strategies of Ozark chinquapin are unknown. Experiments were conducted to determine the influence of insects on successful pollination of C. ozarkensis, as measured by production of burs and seeds. Exclosure treatments …

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Ultramafic Geoecology Of South And Southeast Asia, M.L. Galey, A. Van Der Ent, M.C.M. Iqbal, N. Rajakaruna Apr 2017

Ultramafic Geoecology Of South And Southeast Asia, M.L. Galey, A. Van Der Ent, M.C.M. Iqbal, N. Rajakaruna

Biological Sciences

Globally, ultramafic outcrops are renowned for hosting foras with high levels of endemism, including plants with specialised adaptations such as nickel or manganese hyperaccumulation. Soils derived from ultramafic regoliths are generally nutrient-deficient, have major cation imbalances, and have concomitant high concentrations of potentially phytotoxic trace elements, especially nickel. The South and Southeast Asian region has the largest surface occurrences of ultramafic regoliths in the world, but the geoecology of these outcrops is still poorly studied despite severe conservation threats. Due to the paucity of systematic plant collections in many areas and the lack of georeferenced herbarium records and databased information, …

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Ultramafic Geoecology Of South And Southeast Asia, Nishanta Rajakaruna, M. Galey, Van Der Ent, M. Iqbal Apr 2017

Ultramafic Geoecology Of South And Southeast Asia, Nishanta Rajakaruna, M. Galey, Van Der Ent, M. Iqbal

Faculty Publications, Biological Sciences

Globally, ultramafic outcrops are renowned for hosting floras with high levels of endemism, including plants with specialised adaptations such as nickel or manganese hyperaccumulation. Soils derived from ultramafic regoliths are generally nutrient-deficient, have major cation imbalances, and have concomitant high concentrations of potentially phytotoxic trace elements, especially nickel. The South and Southeast Asian region has the largest surface occurrences of ultramafic regoliths in the world, but the geoecology of these outcrops is still poorly studied despite severe conservation threats. Due to the paucity of systematic plant collections in many areas and the lack of georeferenced herbarium records and databased information, …

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Trap-Neuter-Return Programs And The Importance Of Associated Public Awareness, Nicolette Sliwa Apr 2017

Trap-Neuter-Return Programs And The Importance Of Associated Public Awareness, Nicolette Sliwa

Biology: Student Scholarship & Creative Works

The focus of this paper is to describe a typical Trap-Neuter-Return (TNR) program and highlight the major pros and cons surrounding this somewhat controversial method of managing the overwhelming free-roaming cat population. The effects of the species’ overabundance on the environment and human health are also discussed. Citing studies completed on TNR programs around the globe as well as mathematical models, the effectiveness of this method is compared to other, currently used alternatives. Finally, it has been suggested that the general awareness level a neighborhood possesses about the true goals of TNR programs has a potentially significant impact on the …

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Body Shape Diversification Of Pecos Pupfish (Cyprinodon Pecosensis) On Varying Habitats As Evaluated By Geometric Morphometrics, Qianna Xu Apr 2017

Body Shape Diversification Of Pecos Pupfish (Cyprinodon Pecosensis) On Varying Habitats As Evaluated By Geometric Morphometrics, Qianna Xu

Masters Theses & Specialist Projects

During the 19th and 20th centuries, alterations to the Pecos River in New Mexico and Texas, USA due to anthropogenic activities, including damning and river channelization, vast water extraction for irrigation, as well as pollution of associated habitats, have greatly impacted the fish fauna within the drainage. One of the endemic fish species, the Pecos pupfish (Cyprinodon pecosensis), might be the most affected. Historically abundant and widespread large populations have been disrupted and became a series of small isolated subpopulations that persist at a few highly fragmented habitats restricted to a small area in southern New Mexico. The connectivity among …

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Climate Change, Managed Relocation, And The Risk Of Intra-Continental Plant Invasions: A Theoretical And Empirical Exploration Relative To The Flora Of New England, Jesse Bellemare, Bryan Connolly, Dov F. Sax Apr 2017

Climate Change, Managed Relocation, And The Risk Of Intra-Continental Plant Invasions: A Theoretical And Empirical Exploration Relative To The Flora Of New England, Jesse Bellemare, Bryan Connolly, Dov F. Sax

Biological Sciences: Faculty Publications

The high rate of anthropogenic climate change projected for coming decades and evidence of low migration ability for many species have led researchers to warn of a looming extinction crisis. This threat is expected to be most acute for small-ranged endemic species, which could see novel climatic conditions develop rapidly across the entirety of their limited geographic ranges. To avoid extinctions, some conservationists have proposed that climateimperiled species might be candidates for "assisted colonization" or "managed relocation" to new regions, outside their historical ranges. One major concern related to managed relocation is the possibility that some relocated species could later …

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The Roles Of Activism And Citizen Science In The Area Covered By The East Gippsland Regional Forest Agreement, Ian Corbet Apr 2017

The Roles Of Activism And Citizen Science In The Area Covered By The East Gippsland Regional Forest Agreement, Ian Corbet

Independent Study Project (ISP) Collection

For this Independent Study Project, I have examined the roles of activism and citizen science under the East Gippsland Regional Forestry Act. I conducted the study in the hopes of understanding better how activists have contributed to the overall conservation of the forests of East Gippsland. As the government has recently extended the twenty year agreement for another year, I wanted to determine if the real stakeholders of the conservation movement were taken into account. I sought the perspectives of people involved in the either the administration, implementation or opposition to the RFA. This ended up being eight people in …

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Distribution And Conservation Status Of The Freshwater Gastropods Of Nebraska, Bruce J. Stephen Mar 2017

Distribution And Conservation Status Of The Freshwater Gastropods Of Nebraska, Bruce J. Stephen

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

This survey of freshwater gastropods within Nebraska includes 159 sample sites and encompasses the four primary level III ecoregions of the State. I identified sixteen species in five families. Six of the seven species with the highest incidence, Physa gyrina, Planorbella trivolvis, Stagnicola elodes, Gyraulus parvus, Stagnicola caperata, and Galba humilis were collected in each of Nebraska’s four major level III ecoregions. The exception, Physa acuta, was not collected in the Western High Plains ecoregion. Seven indigenous species, Valvata tricarinata, Helisoma anceps, Campeloma decisum, Galba bulimoides, Physa jennessi, Ferrissia rivularis, and …

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Impact Of Vehicular Traffic On Vertebrate Fauna In Horton Plains And Yala National Parks Of Sri Lanka: Some Implications For Conservation And Management, Suranjan Karunarathna, Sudheera Ranwala, Thilina Surasinghe, Majintha Madawala Jan 2017

Impact Of Vehicular Traffic On Vertebrate Fauna In Horton Plains And Yala National Parks Of Sri Lanka: Some Implications For Conservation And Management, Suranjan Karunarathna, Sudheera Ranwala, Thilina Surasinghe, Majintha Madawala

Biological Sciences Faculty Publications

Abstract: Impacts of roadkills are extensively documented in developed nations. Only a handful of studies on road mortality has emerged from developing nations where tourism and rural development have led to an expansion of transportation networks. To fill such gaps, we conducted a survey to document roadkills in and around two tourism-heavy national parks of Sri Lanka and identified factors that contribute to road mortality. Based on a questionnaire, we interviewed 68 local villagers, 56 local and 59 foreign visitors, and 57 safari drivers to document their opportunistic observations on roadkills, their awareness about roadkills, and to understand potential causes …

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Restoration Of Black Oak (Quercus Velutina) Sand Barrens Via Three Different Habitat Management Approaches, David J. Kriska Jan 2017

Restoration Of Black Oak (Quercus Velutina) Sand Barrens Via Three Different Habitat Management Approaches, David J. Kriska

ETD Archive

Disturbance regimes, i.e. frequent fires, historically maintained oak barrens until European settlement patterns, and eventually, Smoky the Bear and the fire suppression campaign of the U.S. Forest Service snuffed out the periodic flames. In the absence of a disturbance regime, ground layer floral composition at many historical oak sand barrens will change predominantly because of a buildup of leaf litter and shading of the soils. Termed mesophication, this process of ecological succession will drive Black Oak Sand Barrens to an alternate steady state. A survey conducted on Singer Lake Bog in Green, Ohio, demonstrated that succession shifted the community to …

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A Descriptive Analysis Of Regal Fritillary (Speyeria Idalia) Habitat Utilizing Biological Monitoring Data Along The Big Bend Of The Platte River, Ne, Andrew J. Caven, Kelsey C. King, Joshua D. Wiese, Emma M. Brinley Buckley Jan 2017

A Descriptive Analysis Of Regal Fritillary (Speyeria Idalia) Habitat Utilizing Biological Monitoring Data Along The Big Bend Of The Platte River, Ne, Andrew J. Caven, Kelsey C. King, Joshua D. Wiese, Emma M. Brinley Buckley

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Speyeria idalia populations have declined as much as 95 percent over the last three decades. Here we critically evaluate prairie habitat components along the Platte River in central Nebraska that S. idalia populations require in an effort to better inform conservation efforts. We utilized S. idalia count data from biological monitoring transects where vegetation, soils, land management, and flooding frequency data were also collected to describe the habitat constituents associated with S. idalia presence. We utilize comparative statistics, Pearson’s correlation analysis, and random forest analysis to model S. idalia habitat on land owned and managed by a small conservation NGO. …

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Lemurfaceid: A Face Recognition System To Facilitate Individual Identification Of Lemurs, David Crouse, Rachel L. Jacobs, Zach Richardson, Scott Klum, Anil Jain, Andrea L. Baden, Stacey R. Tecot Jan 2017

Lemurfaceid: A Face Recognition System To Facilitate Individual Identification Of Lemurs, David Crouse, Rachel L. Jacobs, Zach Richardson, Scott Klum, Anil Jain, Andrea L. Baden, Stacey R. Tecot

Publications and Research

Background: Long-term research of known individuals is critical for understanding the demographic and evolutionary processes that influence natural populations. Current methods for individual identification of many animals include capture and tagging techniques and/or researcher knowledge of natural variation in individual phenotypes. These methods can be costly, time-consuming, and may be impractical for larger-scale, populationlevel studies. Accordingly, for many animal lineages, long-term research projects are often limited to only a few taxa. Lemurs, a mammalian lineage endemic to Madagascar, are no exception. Long-term data needed to address evolutionary questions are lacking for many species. This is, at least in part, due …

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Diet Selection Of Snow Leopard (Panthera Uncia) In Chitral, Pakistan, Rukhsana Khatoon, Iftikhar Hussain, Maqsood Anwar, Muhammad Ali Nawaz Jan 2017

Diet Selection Of Snow Leopard (Panthera Uncia) In Chitral, Pakistan, Rukhsana Khatoon, Iftikhar Hussain, Maqsood Anwar, Muhammad Ali Nawaz

Turkish Journal of Zoology

Snow leopard (Panthera uncia) is an elusive endangered carnivore found in remote mountain regions of Central Asia, with sparse distribution in northern Pakistan, including Chitral and Baltistan. The present study determined the food habits of snow leopard, including preferred prey species and seasonal variation in diet. Fifty-six scat samples were collected and analyzed to determine the diet composition in two different seasons, i.e. summer and winter. Hair characteristics such as cuticular scale patterns and medullary structure were used to identify the prey. This evidence was further substantiated from the remains of bones, claws, feathers, and other undigested remains found in …

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Protected Areas As Social-Ecological Systems: Perspectives From Resilience And Social-Ecological Systems Theory, Graeme S. Cumming, Craig R. Allen Jan 2017

Protected Areas As Social-Ecological Systems: Perspectives From Resilience And Social-Ecological Systems Theory, Graeme S. Cumming, Craig R. Allen

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Conservation biology and applied ecology increasingly recognize that natural resource management is both an outcome and a driver of social, economic, and ecological dynamics. Protected areas offer a fundamental approach to conserving ecosystems, but they are also social-ecological systems whose ecological management and sustainability are heavily influenced by people. This editorial, and the papers in the invited feature that it introduces, discuss three emerging themes in social-ecological systems approaches to understanding protected areas: (1) the resilience and sustainability of protected areas, including analyses of their internal dynamics, their effectiveness, and the resilience of the landscapes within which they occur; (2) …

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Insights Into The Ecology, Genetics And Distribution Of Lucanus Elaphus Fabricius (Coleoptera: Lucanidae), North America's Giant Stag Beetle, Michael D. Ulyshen, Louis G. Zachos, John O. Stireman Iii, Thomas N. Sheehan, Ryan C. Garrick Jan 2017

Insights Into The Ecology, Genetics And Distribution Of Lucanus Elaphus Fabricius (Coleoptera: Lucanidae), North America's Giant Stag Beetle, Michael D. Ulyshen, Louis G. Zachos, John O. Stireman Iii, Thomas N. Sheehan, Ryan C. Garrick

Biological Sciences Faculty Publications

1. Little is known about the biology or conservation status of Lucanus elaphus Fabricius in North America despite well-documented declines of a related species, Lucanus cervus (L.), in Europe. This study provides information critical to developing conservation plans for L. elaphus including the species’ larval substrate requirements, genetic data and range-wide estimates of habitat suitability. 2. In Mississippi floodplain forests, larval L. elaphus were recovered from a wide range of log sizes and rot types and were either found tunnelling within the wood or feeding beneath logs at the soil–wood interface. The species appears to require 1–2 years to complete …

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The Conservation Status Of Marine Biodiversity Of The Pacific Islands Of Oceania, H. Pippard, G. M. Ralph, M. S. Harvey, K. E. Carpenter, J. R. Buchanan, D. W. Greenfield, H. D. Harwell, H. K. Larson, A. Lawrence, C. Linardich, K. Matsuura, H. Motomura, T. A. Munroe, R. F. Myers, B. C. Russell, W. F. Smith-Vaniz, J. C. Vié, R. R. Thaman, J. T. Williams Jan 2017

The Conservation Status Of Marine Biodiversity Of The Pacific Islands Of Oceania, H. Pippard, G. M. Ralph, M. S. Harvey, K. E. Carpenter, J. R. Buchanan, D. W. Greenfield, H. D. Harwell, H. K. Larson, A. Lawrence, C. Linardich, K. Matsuura, H. Motomura, T. A. Munroe, R. F. Myers, B. C. Russell, W. F. Smith-Vaniz, J. C. Vié, R. R. Thaman, J. T. Williams

Biological Sciences Faculty Publications

The Pacific Islands of Oceania are small islands and atolls occurring over a vast expanse of ocean that are characterized by immense biodiversity and endemism. This project represents a major expansion of the coverage of the Pacific Islands’ marine biodiversity on the IUCN Red List of Threatened Species. The threats to Pacific Island marine biodiversity are many. Results from IUCN Red List initiatives such as this can guide decision-making and conservation prioritization of Pacific Island governments, non-governmental organizations (NGOs) and the private sector. By shaping regional and national policies with these data in mind, priority sites for maintaining marine biodiversity …

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Iron Metabolism Genes In Browsing And Grazing Rhinoceroses: Implications For Iron Overload Disorder, Lorien Salyer Jan 2017

Iron Metabolism Genes In Browsing And Grazing Rhinoceroses: Implications For Iron Overload Disorder, Lorien Salyer

Undergraduate Honors Thesis Projects

Iron overload disorder is a serious condition that affects many animals of conservation interest, including rhinoceroses. Iron overload disorder is only found in browsing rhinos (African black, Diceros bicornis, and Sumatran, Dicerorhinus sumatrensis) but not in grazing species (African white, Ceratotherium simum, and greater one-horned, Rhinoceros unicornis). Iron overload is connected with many of the other health issues seen in captive browsing rhinoceroses, so it is vitally important that the iron metabolism process is studied to improve the existing husbandry procedures of these critically endangered animals. The objective of this study was to characterize genes related to …

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Coral Larvae For Restoration And Research: A Large-Scale Method For Rearing Acropora Millepora Larvae, Inducing Settlement, And Establishing Symbiosis, F. Joseph Pollock, Sefano M. Katz, Jeroen A.J.M. Van De Water, Sarah W. Davies, Margaux Hein, Gergely Torda, Mikhail V. Matz, Victor H. Beltran, Patrick Buerger, Eneour Puill-Stephan, David Abrego, David G. Bourne, Bette L. Willis Jan 2017

Coral Larvae For Restoration And Research: A Large-Scale Method For Rearing Acropora Millepora Larvae, Inducing Settlement, And Establishing Symbiosis, F. Joseph Pollock, Sefano M. Katz, Jeroen A.J.M. Van De Water, Sarah W. Davies, Margaux Hein, Gergely Torda, Mikhail V. Matz, Victor H. Beltran, Patrick Buerger, Eneour Puill-Stephan, David Abrego, David G. Bourne, Bette L. Willis

All Works

© 2017 Pollock et al. Here we describe an efficient and effective technique for rearing sexually-derived coral propagules from spawning through larval settlement and symbiont uptake with minimal impact on natural coral populations. We sought to maximize larval survival while minimizing expense and daily husbandry maintenance by experimentally determining optimized conditions and protocols for gamete fertilization, larval cultivation, induction of larval settlement by crustose coralline algae, and inoculation of newly settled juveniles with their dinoflagellate symbiont Symbiodinium. Larval rearing densities at or below 0.2 larvae mL-1 were found to maximize larval survival and settlement success in culture tanks while minimizing …

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Are Mussel Shells Environmental Dna Time Capsules? A Comparison Of Extraction Methods For Obtaining Dna From Shell Material., Kelsey Elizabeth Rogers Jan 2017

Are Mussel Shells Environmental Dna Time Capsules? A Comparison Of Extraction Methods For Obtaining Dna From Shell Material., Kelsey Elizabeth Rogers

Online Theses and Dissertations

Freshwater mussels have become some of the most imperiled species in North America and widespread populations have succumbed to pollution and many other anthropogenic-related factors. With molecular techniques evolving, a recent interest in ancient DNA and museum specimens has emerged and prompted a study to test the ability of several extraction methods to isolate DNA from museum mussel specimens. The purpose of this study was to determine if four DNA extraction methods had influence on total DNA yield (ng/mg) from mussel tissue. The hinge ligaments of freshwater mussels ranging in collection date (1984-2015) were used as the source of genetic …

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Evaluating The Utility Of Rbcl In Identifying Nigerian Speciesof The Genus Afzelia Sm. (Fabaceae; Caesalpinioideae), Aramide Oshingboye, George Nodza, Temitope Onuminya, Oluwatoyin Ogundipe Jan 2017

Evaluating The Utility Of Rbcl In Identifying Nigerian Speciesof The Genus Afzelia Sm. (Fabaceae; Caesalpinioideae), Aramide Oshingboye, George Nodza, Temitope Onuminya, Oluwatoyin Ogundipe

Turkish Journal of Botany

The genus Afzelia Sm. (Fabaceae) represents one of the most useful tree species in tropical Africa. These trees have huge socioeconomic and ecological importance, but are under serious threat from incessant exploitation. This has caused a decline of the species in the wild; several species are now registered as threatened and endangered in the IUCN red list. However, conserving this species for posterity has been hampered by the complexity of morphological characters that exist among Afzelia species. In our study, we evaluated the utility of rbcL as a single barcode region, exploring its performance to accurately identify Nigerian Afzelia species …

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Using Geospatial Analysis For High School Environmental Science Education: A Case Study Of The Jane Goodall Institute's Community-Centered Conservation Approach, Madison G. Vorva Jan 2017

Using Geospatial Analysis For High School Environmental Science Education: A Case Study Of The Jane Goodall Institute's Community-Centered Conservation Approach, Madison G. Vorva

Pomona Senior Theses

Given my experiences as a young conservation advocate, I saw a need to teach students the importance of interconnectedness, cultural awareness and systems-thinking skills through a spatial lens. I believe these skills are required for holistic, equitable and sustainable conservation decision-making in local and international contexts. This thesis uses geospatial tools to teach conservation ecology vocabulary and concepts from high school environmental science curriculum in two online resources. The purpose of my lesson plan is to show students how conservationists address complex conservation and land-use challenges using the Jane Goodall Institute’s community-centered conservation approach as a case-study. My hope is …

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Genetic Diversity And Population Structure Of The African Catfish, Clarias Gariepinus (Burchell, 1822) In Kenya: Implication For Conservation And Aquaculture, James E. Barasa, Sinebongo Mdyogolo, Romulus Abila, Johannes Paul Grobler, Robert A. Skilton, Hesmari Bindeman, Moses Ndotono Njahira, Emily J. Chemoiwa, Otto G. Dangasuk, Boaz Kaunda-Arara, Erik Verheyen Jan 2017

Genetic Diversity And Population Structure Of The African Catfish, Clarias Gariepinus (Burchell, 1822) In Kenya: Implication For Conservation And Aquaculture, James E. Barasa, Sinebongo Mdyogolo, Romulus Abila, Johannes Paul Grobler, Robert A. Skilton, Hesmari Bindeman, Moses Ndotono Njahira, Emily J. Chemoiwa, Otto G. Dangasuk, Boaz Kaunda-Arara, Erik Verheyen

All Peer-Reviewed Publications

African catfish, Clarias gariepinus, is an important species in aquaculture and fisheries in Kenya. Mitochondrial D-loop control region was used to determine genetic variation and population structure in samples of C. gariepinus from 10 sites including five natural populations (Lakes Victoria (LVG), Kanyaboli (LKG), Turkana (LTA), Baringo (LBA) and Jipe (LJP), and five farms (Sangoro Aquaculture Center (SAN), Sagana Aquaculture Centre (SAG), University of Eldoret Fish Farm (UoE), Kibos Fish Farm (KIB), and Wakhungu Fish Farm (WKU)) in Kenya. Similarly, samples from eight localities (four natural populations: LVG/LKG, LTA, LBA, and four farmed: SAN, SAG, KIB, UoE) were genotyped using …

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Galliformes Specialist Group Annual Report 2016-2017, John P. Carroll, Simon D. Dowell Jan 2017

Galliformes Specialist Group Annual Report 2016-2017, John P. Carroll, Simon D. Dowell

Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials

Annual report of the IUCN SSC Galliformes Specialist Group, 2017.

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The Potential Effects Of Future Climate Change On Suitable Habitat For The Taiwan Partridge (Arborophila Crudigularis): An Ensemble-Based Forecasting Method, Juncheng Lei, Jun Wu, Qingwei Guan Jan 2017

The Potential Effects Of Future Climate Change On Suitable Habitat For The Taiwan Partridge (Arborophila Crudigularis): An Ensemble-Based Forecasting Method, Juncheng Lei, Jun Wu, Qingwei Guan

Turkish Journal of Zoology

Climate change is considered to be one of the greatest threats to biodiversity in this century, especially for range-restricted island species. This study explored the potential effects of climate change on Arborophila crudigularis, a weak-flying endemic bird species in Taiwan. The potential effects of climate change on climatically suitable habitat for A. crudigularis were analyzed in biomod2 and ArcGIS software. Future climate change could increase the availability of climatically suitable habitat for A. crudigularis while decreasing the mean suitability for both the entire suitable area and the area with known presence records. By 2050 and 2080, climatically suitable habitat is …

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Using Species Distribution Models To Define Nesting Habitat Of The Eastern Metapopulation Of Double-Crested Cormorants, Kate L. Sheehan, Samuel T. Esswein, Brian S. Dorr, Greg K. Yarrow, Ron J. Johnson Jan 2017

Using Species Distribution Models To Define Nesting Habitat Of The Eastern Metapopulation Of Double-Crested Cormorants, Kate L. Sheehan, Samuel T. Esswein, Brian S. Dorr, Greg K. Yarrow, Ron J. Johnson

United States Department of Agriculture Wildlife Services: Staff Publications

When organisms with similar phenotypes have conflicting management and conservation initiatives, approaches are needed to differentiate among subpopulations or discrete groups. For example, the eastern metapopulation of the double-crested cormorant (Phalacrocorax auritus) has a migratory phenotype that is culled because they are viewed as a threat to commercial and natural resources, whereas resident birds are targeted for conservation. Understanding the distinct breeding habitats of resident versus migratory cormorants would aid in identification and management decisions. Here, we use species distribution models (SDM: Maxent) of cormorant nesting habitat to examine the eastern P. auritus metapopulation and the predicted breeding …

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Hopeful Monsters - In Defense Of Quests To Rediscover Long-Lost Species, David M. Watson, Robert A. Davis Jan 2017

Hopeful Monsters - In Defense Of Quests To Rediscover Long-Lost Species, David M. Watson, Robert A. Davis

Research outputs 2014 to 2021

Wild goose chase, snipe hunt, fool’s errand—these retorts typify responses of many biologists to news that someone is searching for a species considered extinct. Although these ventures can damage reputations and may offer false hope regarding the finality of extinction, genuine conservation gains often result, even for those quests that prove unsuccessful. As well as enhanced protection for regions where rediscovered species persist and new information of direct management relevance for co-occurring species, well-planned searches for long-lost species represent valuable engagement opportunities to raise awareness in the wider community about biodiversity conservation and science generally. Indeed, we suggest that “Lazarus …

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