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2018

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Articles 2161 - 2190 of 2557

Full-Text Articles in Animal Sciences

Cryptochetidae (Diptera): First Record Of The Family From Turkey, László Papp, Mi̇roslav Bartak, Stepan Kubik, Hasan Sungur Ci̇velek Jan 2018

Cryptochetidae (Diptera): First Record Of The Family From Turkey, László Papp, Mi̇roslav Bartak, Stepan Kubik, Hasan Sungur Ci̇velek

Turkish Journal of Zoology

The first record of the family Cryptochetidae is given from Turkey. Cryptochetum grandicorne and C. jorgepastori were found in Turkey. Four original figures are presented.


Changes In Body Mass Of Postweaning Juveniles Of The Edible Dormouse, Glis Glis (L.), In Captivity, Miroslaw Jurczyszyn, Anna Marchewka, Agata Czapracka, Lidia Karminska Jan 2018

Changes In Body Mass Of Postweaning Juveniles Of The Edible Dormouse, Glis Glis (L.), In Captivity, Miroslaw Jurczyszyn, Anna Marchewka, Agata Czapracka, Lidia Karminska

Turkish Journal of Zoology

Edible dormice have to accumulate an adequate amount of body fat before hibernation. Because young dormice are born late in the season, they have a relatively short time for prehibernation fattening. The aim of our study was a) to determine what body mass juveniles reach prior to hibernation, and b) to examine patterns of mass gain in juvenile dormice with unlimited food supply. Dormice were kept in outdoor cages, fitted with wooden boxes and with the floor covered with soil suitable for hibernation. They were provided with water and fed ad libitum. They were weighed every 5-8 days. Of 34 …


Morphology, Sex Ratio, And Diet Of Bothus Podas (Delaroche, 1809) In Heraklion Bay, Crete (Greece), Dimitris Moutopoulos, Maria Chouli, Aikaterini Dogrammatzi, Kostantia-Nadia Papadopoulou, Chris J. Smith, Paraskevi Karachle Jan 2018

Morphology, Sex Ratio, And Diet Of Bothus Podas (Delaroche, 1809) In Heraklion Bay, Crete (Greece), Dimitris Moutopoulos, Maria Chouli, Aikaterini Dogrammatzi, Kostantia-Nadia Papadopoulou, Chris J. Smith, Paraskevi Karachle

Turkish Journal of Zoology

The aim of the present study is to provide morphometric relationships for the Mediterranean wide-eyed flounder Bothus podas (Delaroche, 1809), to identify possible sexual dimorphism, and to determine the feeding habits and the functional role of the species in the ecosystem. Sampling was carried out during a trawl survey off the coast of northern Crete in early May of 2015. A total of 425 specimens were examined (175 males and 250 females; total length (TL) range: 6.2-13.5 cm and 6.0-15.1 cm, respectively). The relationships between TL and weight, interorbital space (IO), body height (BH), and mouth dimensions (horizontal mouth opening: …


Age Estimation Of Black Stork (Ciconia Nigra) Nestlings From Wing, Bill, Head, And Tarsus Lengths At The Time Of Ringing, Maciej Kaminski, Bartosz Janic, Lidia Marszal, Jerzy Banbura, Piotr Zielinski Jan 2018

Age Estimation Of Black Stork (Ciconia Nigra) Nestlings From Wing, Bill, Head, And Tarsus Lengths At The Time Of Ringing, Maciej Kaminski, Bartosz Janic, Lidia Marszal, Jerzy Banbura, Piotr Zielinski

Turkish Journal of Zoology

Black stork nestlings were measured (wing, bill, head, and tarsus lengths) at weekly intervals in central Poland in 2012, 2014, and 2015. The aim of the study was to provide growth equations based on nestling measurements to allow age estimation of black stork nestlings. The hatching hour and date of nestlings in five nests were determined using trail cameras. The age of the measured nestlings ranged from 18 to 53 days. Wing, bill, and head lengths showed linear growth, while tarsus growth was only linear for nestlings not exceeding 35 days old. Within the age range studied, wing length grew …


The First Record Of The Eggs Of Black Wing Flyingfish Hirundichthys Rondeletii (Valenciennes, 1846) In The Turkish Nearshores Of The Aegean Sea (Gümüldür), Orçi̇n Uygun, Belgi̇n Hoşsucu Jan 2018

The First Record Of The Eggs Of Black Wing Flyingfish Hirundichthys Rondeletii (Valenciennes, 1846) In The Turkish Nearshores Of The Aegean Sea (Gümüldür), Orçi̇n Uygun, Belgi̇n Hoşsucu

Turkish Journal of Zoology

Hirundichthys rondeletii is among the three flyingfish species showing distribution in the Turkish seas. However, the egg stages of Exocoetidae species found in the Turkish waters have not been documented. Flyingfish eggs were randomly obtained on 16 July 2016 on the coast of Gümüldür, at a depth of approximately 1 m from a sandy bottom. Samples were fixed in a 4% buffered formaldehyde solution. The eggs were described and illustrated. The diameters of spherical fish eggs were between 1.75 mm and 2.05 mm. They have bipolar filaments: a single filament on one pole and 28-33 filaments on the other pole. …


New Records Of Centrodora Forster (Hymenoptera: Aphelinidae) From The Caucasus, George Japoshvili Jan 2018

New Records Of Centrodora Forster (Hymenoptera: Aphelinidae) From The Caucasus, George Japoshvili

Turkish Journal of Zoology

The Georgian (Sakartvelo) species of Centrodora Forster, 1878 (Hymenoptera: Aphelinidae) have been collected from the Lagodekhi Protected Areas and three species (C. salicis, C. ochrura, C. dorsati) are recorded for the first time from Georgia and the Caucasus


Natural Infection Of The Land Snails Xerolenta Obvia, Zebrina Detrita, And Monacha Samsunensis By Brachylaima Sp. Metacercariae In Kastamonu, Turkey, Fatma Mohamed Abdualrazig Khalifa Ismail, Gözde Gürelli̇ Jan 2018

Natural Infection Of The Land Snails Xerolenta Obvia, Zebrina Detrita, And Monacha Samsunensis By Brachylaima Sp. Metacercariae In Kastamonu, Turkey, Fatma Mohamed Abdualrazig Khalifa Ismail, Gözde Gürelli̇

Turkish Journal of Zoology

This study investigated the prevalence of infection, and some of its morphological features, of the land snails Xerolenta obvia, Zebrina detrita, and Monacha samsunensis (Mollusca: Pulmonata) by metacercariae of Brachylaima sp. (Trematoda: Brachylaimidae) in Kastamonu, Turkey. The land snails were collected in spring and autumn. The prevalence rates of infection by metacercariae of Brachylaima sp. were 5.74%, 1.68%, and 17.35% in X. obvia, Z. detrita, and M. samsunensis, respectively. This study reports for the first time the natural occurrence of Brachylaima sp. unencysted metacercariae in the hepatopancreas of these three land snails.


New Data On Aplidium Tabarquense (Tunicata: Ascidiacea)Distribution In The Adriatic Sea, Slavica Petovic, Flavia Grieco, Vesna Macic, Federica Montesanto, Francesco Mastrototaro Jan 2018

New Data On Aplidium Tabarquense (Tunicata: Ascidiacea)Distribution In The Adriatic Sea, Slavica Petovic, Flavia Grieco, Vesna Macic, Federica Montesanto, Francesco Mastrototaro

Turkish Journal of Zoology

The colonial ascidian Aplidium tabarquense Ramos-Espla 1991 was recorded in Montenegro during a monitory survey carried out by scuba divers on an underwater outfall of the wastewater discharge system in Traste Bay. Several colonies were present on artificial substrata at a depth of 27 m. This is the first record of the species in the South Adriatic Sea. Further observations are recommended both to delineate the effective distribution and population density of A. tabarquense in the Mediterranean Sea and to widen the knowledge on ascidian diversity along Montenegro's coasts.


Rediscovery Of Eunapius Carteri (Bowerbank, 1863) In Western Europe, Rafael Carballeira Jan 2018

Rediscovery Of Eunapius Carteri (Bowerbank, 1863) In Western Europe, Rafael Carballeira

Turkish Journal of Zoology

The freshwater sponge collections of the National Museum of Natural History of Madrid were examined and the presence of Eunapius carteri (Bowerbank, 1863) in the Iberian Peninsula was rediscovered. An approach to its ecology is also presented. This species is not currently considered within the Iberian and Western European fauna. Therefore, its rediscovery changes the conception of this species' biogeographical distribution in Europe linked to its ecology.


A New Gammaridean Amphipod From The Lake District Region Of Turkey: Gammarus Deryae Sp. Nov., Murat Özbek Jan 2018

A New Gammaridean Amphipod From The Lake District Region Of Turkey: Gammarus Deryae Sp. Nov., Murat Özbek

Turkish Journal of Zoology

In order to determine the distribution and composition of freshwater amphipod species of the Lake District Region of Turkey, detailed samplings were conducted between 1998 and 2001. Among these materials, those from Pınar Pazarı and Yukarı Gökdere villages (Isparta Province, Turkey) were studied in the present study. Because of having different character combinations, the author believes that they belong to a new species, Gammarus deryae sp. nov. The new species is a typical member of the Gammarus pulex-group having setose third and fourth pereopod and uropod 3 where dense plumose setae exist. Elevated urosomal segments and sharply pointed third epimeral …


A New Species Of Trichocera Meigen With Further Records Of Metatrichocera Dahl From Bulgaria, Romania, And Serbia (Diptera, Trichoceridae), Levente Péter Kolcsár, Andrius Petrasiunas, Edina Török, Lujza Keresztes Jan 2018

A New Species Of Trichocera Meigen With Further Records Of Metatrichocera Dahl From Bulgaria, Romania, And Serbia (Diptera, Trichoceridae), Levente Péter Kolcsár, Andrius Petrasiunas, Edina Török, Lujza Keresztes

Turkish Journal of Zoology

Here we report a new winter crane fly (Trichoceridae) species, belonging to the subgenus Metatrichocera Dahl, 1966 from Bulgaria. Further records of Metatrichocera Dahl from Bulgaria, Romania, and Serbia are presented with illustrations and taxonomic remarks. The records of Trichocera (Metatrichocera) forcipula Nielsen, 1920 and Trichocera (Metatrichocera) ticina Stary & Podenas, 1995 represent the first records of Trichoceridae from Serbia.


Iranian Branchiostoma Species (Cephalochordata, Branchiostomatidae) Inhabiting Chabahar Bay (Gulf Of Oman), With Remarks On Habitat Preferences, Abdolvahab Maghsoudlou Jan 2018

Iranian Branchiostoma Species (Cephalochordata, Branchiostomatidae) Inhabiting Chabahar Bay (Gulf Of Oman), With Remarks On Habitat Preferences, Abdolvahab Maghsoudlou

Turkish Journal of Zoology

Variations in the population of lancelets inhabiting Chabahar Bay were surveyed statistically. Multivariate analysis of the Iranian Branchiostoma population using 5 morphometric characteristics indicates no separation of populations by locality in the study area (ANOSIM global; R = 0.2). Principal component analysis of the mean values of the 5 meristic characteristics of the present population with those of conspecifics of other populations around the world showed that Iranian lancelet populations are very similar to B. lanceolatum and completely different from the B. arabia and B. belcheri previously reported in adjacent waters (ANOSIM for pairwise tests; R = 1). Cluster analysis …


Tintinnina (Ciliophora) And Foraminifera In Plankton Of Hypersalinelagoon Bardawil (Egypt): Spatial And Temporal Variability, Gamal El-Shabrawy, Elena Anufriieva, Nickolai Shadrin Jan 2018

Tintinnina (Ciliophora) And Foraminifera In Plankton Of Hypersalinelagoon Bardawil (Egypt): Spatial And Temporal Variability, Gamal El-Shabrawy, Elena Anufriieva, Nickolai Shadrin

Turkish Journal of Zoology

Lagoon Bardawil, belonging to the few hypersaline lagoons in the Mediterranean Sea, is located in the middle of the Sinai coast. Composition, distribution, and seasonal dynamics of large planktonic tintinnids and foraminifera at 12 stations in the lagoon were studied in 2009 and 2010. Fifteen species of Ciliophora (Tintinnina) and two species of Foraminifera were identified. The occurrence of different species varied greatly in the study period: two species were found in 42% to 49% of all samples, two species in 21% to 23%, 4 species in 10% to 20%, and 10 species in 1% to 5%. Only three species …


The Evolutionary Trend Of Platform Denticulation In Middle Triassic Acuminate Gondolellidae (Conodonta), Pablo Plasencia, Ali̇ Murat Kiliç, Aymon Baud, Milan Sudar, Francis Hirsch Jan 2018

The Evolutionary Trend Of Platform Denticulation In Middle Triassic Acuminate Gondolellidae (Conodonta), Pablo Plasencia, Ali̇ Murat Kiliç, Aymon Baud, Milan Sudar, Francis Hirsch

Turkish Journal of Zoology

Acuminate Middle-Late Triassic Gondolellidae are characterized by an ellipsoid platform with a central to posterior amygdaloid basal cavity and an octomembrate apparatus of gondolelloid affinity. Starting with a neospathodiform proteromorph during the Anisian, their anagenetic lineage developed during the Fassanian, Longobardian, and Julian, ending in another neospathodiform proteromorph. As the increase in complexity in the platform denticulation is an important evolutionary trend, three new genera are proposed: Guexispathodus n. gen., Marquezella n. gen., and Kirilella n. gen., which, together with Pseudofurnishius and Mosherella, represent the subfamily Marquezellinae n. subfam.


Does The Location Of Coastal Brackish Waters Determine Diversityand Abundance Of Zooplankton Assemblages?, Agnieszka Gutkowska, Ewa Paturej, Jacek Koszalka Jan 2018

Does The Location Of Coastal Brackish Waters Determine Diversityand Abundance Of Zooplankton Assemblages?, Agnieszka Gutkowska, Ewa Paturej, Jacek Koszalka

Turkish Journal of Zoology

Habitat conditions may shape the abundance and community structure of planktonic fauna. In this study, we investigated whether reservoirs with different locations and drainage basins also differed in the structure and abundance of zooplankton. The studies were conducted in 2010-2011 between June and October in the Vistula Lagoon and Lake Lebsko. The zooplankton was dominated mainly by small eurytopic organisms belonging to Rotifera. Plankton crustaceans showed a limited diversity of species. Copepods were predominant, while Cladocera were observed sporadically in more freshwater habitats. In the first experimental season (2010), the Vistula Lagoon and Lake Lebsko showed a comparable taxonomic structure …


Diet Composition And Prey Diversity Of Tengmalm's Owl Aegolius Funereus(Linnaeus, 1758; Aves: Strigidae) In Central Serbia During Breeding, Drazenko Z. Rajkovic Jan 2018

Diet Composition And Prey Diversity Of Tengmalm's Owl Aegolius Funereus(Linnaeus, 1758; Aves: Strigidae) In Central Serbia During Breeding, Drazenko Z. Rajkovic

Turkish Journal of Zoology

Annual variation in the diet, composition, and prey diversity of Tengmalm's owl Aegolius funereus (Linnaeus, 1758) was investigated in high-mountain coniferous forests of Mt. Kopaonik (central Serbia) during 3 consecutive years. Prey remains and decomposed pellets (detritus) were collected at the bottom of nest-boxes during 2 separate periods: during mating and after nesting. Prey remains such as maxillae, mandibles, beaks, or feathers were used for prey identification. In total, 438 prey items were separated and identified. Small mammals represented the most numerous class of prey (87.23%). The most frequent prey item was bank vole Myodes glareolus (23.29%). During the nesting …


Opportunities And Challenges For Big Data Ornithology, Frank A. La Sorte, Christopher A. Lepczyk, Jessica L. Burnett, Allen H. Hurlbert, Morgan W. Tingley, Benjamin Zuckerberg Jan 2018

Opportunities And Challenges For Big Data Ornithology, Frank A. La Sorte, Christopher A. Lepczyk, Jessica L. Burnett, Allen H. Hurlbert, Morgan W. Tingley, Benjamin Zuckerberg

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Recent advancements in information technology and data acquisition have created both new research opportunities and new challenges for using big data in ornithology. We provide an overview of the past, present, and future of big data in ornithology, and explore the rewards and risks associated with their application. Structured data resources (e.g., North American Breeding Bird Survey) continue to play an important role in advancing our understanding of bird population ecology, and the recent advent of semistructured (e.g., eBird) and unstructured (e.g., weather surveillance radar) big data resources has promoted the development of new empirical perspectives that are generating novel …


A Framework For Tracing Social–Ecological Trajectories And Traps In Intensive Agricultural Landscapes, Daniel R. Uden, Craig R. Allen, Francisco Munoz-Arriola, Gengxin Ou, Nancy Shank Jan 2018

A Framework For Tracing Social–Ecological Trajectories And Traps In Intensive Agricultural Landscapes, Daniel R. Uden, Craig R. Allen, Francisco Munoz-Arriola, Gengxin Ou, Nancy Shank

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Charting trajectories toward sustainable agricultural development is an important goal at the food–energy–water–ecosystem services (FEWES) nexus of agricultural landscapes. Social–ecological adaptation and transformation are two broad strategies for adjusting and resetting the trajectories of productive FEWES nexuses toward sustainable futures. In some cases, financial incentives, technological innovations, and/or subsidies associated with the short-term optimization of a small number of resources create and strengthen unsustainable feedbacks between social and ecological entities at the FEWES nexus. These feedbacks form the basis of rigidity traps, which impede adaptation and transformation by locking FEWES nexuses into unsustainable trajectories characterized by control, stability, and efficiency, …


Quantifying Uncertainty And Trade-Offs In Resilience Assessments, Craig R. Allen, Hannah E. Birgé, David G. Angeler, Craig A. Arnold, Brian C. Chaffin, Daniel A. Decaro, Ahjond S. Garmestani, Lance Gunderson Jan 2018

Quantifying Uncertainty And Trade-Offs In Resilience Assessments, Craig R. Allen, Hannah E. Birgé, David G. Angeler, Craig A. Arnold, Brian C. Chaffin, Daniel A. Decaro, Ahjond S. Garmestani, Lance Gunderson

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Several frameworks have been developed to assess the resilience of social-ecological systems, but most require substantial data inputs, time, and technical expertise. Stakeholders and practitioners often lack the resources for such intensive efforts. Furthermore, most end with problem framing and fail to explicitly address trade-offs and uncertainty. To remedy this gap, we developed a rapid survey assessment that compares the relative resilience of social-ecological systems with respect to a number of resilience properties. This approach generates large amounts of information relative to stakeholder inputs. We targeted four stakeholder categories: government (policy, regulation, management), end users (farmers, ranchers, landowners, industry), agency/public …


A Method To Detect Discontinuities In Census Data, Chris Barichievy, David G. Angeler, Tarsha Eason, Ahjond S. Garmestani, Kirsty L. Nash, Craig A. Stow, Shana Sundstrom, Craig R. Allen Jan 2018

A Method To Detect Discontinuities In Census Data, Chris Barichievy, David G. Angeler, Tarsha Eason, Ahjond S. Garmestani, Kirsty L. Nash, Craig A. Stow, Shana Sundstrom, Craig R. Allen

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

The distribution of pattern across scales has predictive power in the analysis of complex systems. Discontinuity approaches remain a fruitful avenue of research in the quest for quantitative measures of resilience because discontinuity analysis provides an objective means of identifying scales in complex systems and facilitates delineation of hierarchical patterns in processes, structure, and resources. However, current discontinuity methods have been considered too subjective, too complicated and opaque, or have become computationally obsolete; given the ubiquity of discontinuities in ecological and other complex systems, a simple and transparent method for detection is needed. In this study, we present a method …


Effects Of Large-Scale Wetland Loss On Network Connectivity Of The Rainwater Basin, Nebraska, Bram H. F. Verheijen, Dana M. Varner, David A. Haukos Jan 2018

Effects Of Large-Scale Wetland Loss On Network Connectivity Of The Rainwater Basin, Nebraska, Bram H. F. Verheijen, Dana M. Varner, David A. Haukos

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Context The Rainwater Basin region in south-central Nebraska supports a complex network of spatiallyisolated wetlands that harbor diverse floral and faunal communities. Since European settlement, many wetlands have been lost from the network, which has increased distances among remaining wetlands. As a result, populations of wildlife species with limited dispersal capabilities may have become isolated and face greater local extinction risks.

Objectives We compared the pre-European settlement and current extent of the Rainwater Basin network to assess the effects of wetland losses on network connectivity for a range of maximum dispersal distances.

Methods We constructed network models for a range …


Synchrony - An Emergent Property Of Recreational Fisheries, Mark A. Kaemingk, Christopher J. Chizinski, Keith L. Hurley, Kevin L. Pope Jan 2018

Synchrony - An Emergent Property Of Recreational Fisheries, Mark A. Kaemingk, Christopher J. Chizinski, Keith L. Hurley, Kevin L. Pope

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

No abstract provided.


Endoparasitism Of Rehabilitating Grey Crowned Cranes In Rwanda, Barry K. Hartup, Deo Ruhgazi, Haynes Werner, Oliver Nsengimana Jan 2018

Endoparasitism Of Rehabilitating Grey Crowned Cranes In Rwanda, Barry K. Hartup, Deo Ruhgazi, Haynes Werner, Oliver Nsengimana

Proceedings of the North American Crane Workshop

Diseases such as parasitism can limit the effectiveness of conservation translocations depending on host-parasite dynamics at the site of release. The Rwanda Wildlife Conservation Association and the Rwandan government are rehabilitating and repatriating grey crowned cranes (Balearica regulorum) from illegal captivity to the wild at Akagera National Park in large numbers. Monitoring of cranes at the fenced soft-release site during 4 time points in 2017 showed 50-67% of fecal samples tested were positive for 1 or more parasites, most commonly nematodes (roundworms) of the Order Ascaridida. The prevalences and species diversity observed in the fecal samples were not …


Habitat Selection And Con- And Heterospecific Associations Of Wintering Whooping Cranes At Wheeler National Wildlife Refuge, Alabama, Andrew W. Cantrell, Yong Wang Jan 2018

Habitat Selection And Con- And Heterospecific Associations Of Wintering Whooping Cranes At Wheeler National Wildlife Refuge, Alabama, Andrew W. Cantrell, Yong Wang

Proceedings of the North American Crane Workshop

Winter ecology of the Eastern Migratory Population of whooping cranes (Grus americana) has received less detailed study than that of other life stages or the Aransas-Wood Buffalo Population. Increased winter use of novel sites by these cranes makes understanding the mechanisms contributing to habitat selection and use important for efficient conservation. As a subset of a larger and ongoing project, this study examined the individual and temporal variations of occupancy times, habitat types used, and co-occurrence with con- and heterospecifics during winters 2014-15 and 2015-16 at Wheeler National Wildlife Refuge, Alabama, while considering the effect of individual life …


Bipartite Networks Improve Understanding Of Effects Of Waterbody Size And Angling Method On Angler–Fish Interactions, Christopher J . Chizinski, Dustin R. Martin, Daizaburo Shizuka, Kevin L. Pope Jan 2018

Bipartite Networks Improve Understanding Of Effects Of Waterbody Size And Angling Method On Angler–Fish Interactions, Christopher J . Chizinski, Dustin R. Martin, Daizaburo Shizuka, Kevin L. Pope

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Networks used to study interactions could provide insights to fisheries. We compiled data from 27 297 interviews of anglers across waterbodies that ranged in size from 1 to 12 113 ha. Catch rates of fish species among anglers grouped by species targeted generally differed between angling methods (bank or boat). We constructed angler–catch bipartite networks (angling method specific) between anglers and fish and measured several network metrics. There was considerable variation in networks among waterbodies, with multiple metrics influenced by waterbody size. Number of species-targeting angler groups and number of fish species caught increased with increasing waterbody size. Mean number …


Variation In Angler Distribution And Catch Rates Of Stocked Rainbow Trout In A Small Reservoir, Brian S. Harmon, Dustin R. Martin, Christopher J . Chizinski, K. L. Pope Jan 2018

Variation In Angler Distribution And Catch Rates Of Stocked Rainbow Trout In A Small Reservoir, Brian S. Harmon, Dustin R. Martin, Christopher J . Chizinski, K. L. Pope

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We investigated the spatial and temporal relationship of catch rates and angler party location for two days following a publicly announced put-and-take stocking of rainbow trout (Oncorhynchus mykiss). Catch rates declined with time since stocking and distance from stocking. We hypothesized that opportunity for high catch rates would cause anglers to fish near the stocking location and disperse with time, however distance between angler parties and stocking was highly variable at any given time. Spatially explicit differences in catch rates can affect fishing quality. Further research could investigate the variation between angler distribution and fish distribution within a …


Population Characteristics Of Shovelnose Sturgeon During Low- And High-Water Conditions In The Lower Platte River, Nebraska, Jeremy J. Hammen, Martin J. Hamel, Matthew L. Rugg, Edward J. Peters, Mark A. Pegg Jan 2018

Population Characteristics Of Shovelnose Sturgeon During Low- And High-Water Conditions In The Lower Platte River, Nebraska, Jeremy J. Hammen, Martin J. Hamel, Matthew L. Rugg, Edward J. Peters, Mark A. Pegg

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Cycles of low- and high-water periods (i.e., years) in river systems are natural occurrences, but understanding how cyclical climatological patterns affect fishes, especially long-lived species, is unclear. We assessed Shovelnose Sturgeon population dynamics between a period of low- (2001-2004) and high- (2009-2012) water years in the lower Platte River, Nebraska. Low-flow periods in the lower Platte River can cause disconnection(s) between upstream and downstream reaches resulting in isolated pools and elevated water temperatures leading to stressful situations for aquatic life and possible mortality. Our data show no measurable differences between key population indices between flow condition periods which is consistent …


Resilience Concepts In Psychiatry Demonstrated With Bipolar Disorder, David G. Angeler, Craig R. Allen, Maj-Liz Persson Jan 2018

Resilience Concepts In Psychiatry Demonstrated With Bipolar Disorder, David G. Angeler, Craig R. Allen, Maj-Liz Persson

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Background: The term resilience describes stress–response patterns of subjects across scientific disciplines. In ecology, advances have been made to clearly distinguish resilience definitions based on underlying mechanistic assumptions. Engineering resilience (rebound) is used for describing the ability of subjects to recover from adverse conditions (disturbances), and is the rate of recovery. In contrast, the ecological resilience definition considers a systemic change: when complex systems (including humans) respond to disturbances by reorganizing into a new regime (stable state) where structural and functional aspects have fundamentally changed relative to the prior regime. In this context, resilience is an emergent property of complex …


Proceedings Of The Fourteenth North American Crane Workshop, 11–15 January 2017, Chattanooga, Tennessee, Frontmatter, Jane E. Austin, Richard P. Urbanek Jan 2018

Proceedings Of The Fourteenth North American Crane Workshop, 11–15 January 2017, Chattanooga, Tennessee, Frontmatter, Jane E. Austin, Richard P. Urbanek

Proceedings of the North American Crane Workshop

List of Previous Proceedings of the North American Crane Workshops:

Suggested citation formats

PREFACE

Memorials: ROBERT H. HORWICH 1940-2017; WILLIAM A. LISHMAN 1939-2017; THEODORE A. BOOKHOUT 1931-2018; JAMES T. HARRIS 1950-2018

CONTENTS

Front and back covers

The North American Crane Working Group (NACWG) is an organization of professional biologists, aviculturists, land managers, non-professional crane enthusiasts, and others interested in and dedicated to the conservation of cranes and crane habitats in North America. Our group meets approximately every 3 years to exchange information pertaining to sandhill cranes and whooping cranes and occasionally reports about some of the other cranes species. The …


Color-Band Identification System Of The Reintroduced Eastern Migratory Whooping Crane Population, Richard Urbanek Jan 2018

Color-Band Identification System Of The Reintroduced Eastern Migratory Whooping Crane Population, Richard Urbanek

Proceedings of the North American Crane Workshop

A reintroduction of whooping cranes (Grus americana) migrating between Wisconsin and the southeastern U.S. was initiated in 2001. A color-band system to uniquely identify individuals was necessary for monitoring and evaluation of that population. The system provided 336 individual unduplicated color combinations consisting of 3 base and 1 additional colors on plastic bands. The band combination on 1 leg carried a VHF transmitter and provided additional information on hatch year. Bands on the other leg were either small bands that were part of a permanent code or they were temporary and supported a remotely monitored (satellite or cellular) …