Foothill yellow-legged frog breeding biology in a semiregulated river, Humboldt County, CA

River-breeding foothill yellow-legged frogs (Rana boylii) are endemic to California and Oregon. Across this wide geographic range, many populations have declined due habitat loss, non-native competitors and predators (e.g., American bullfrogs [Lithobates catesbeianus], Centrarchid fish), and disrupted water flow due to dams. Even when flow conditions are not extensively regulated, managers still require basic and region-specific information about the breeding biology of this species to prevent further decline. To document spatiotemporal dynamics of reproductive output during drought and high flow years, we surveyed a 13.5 km reach of the lower Mad River, Humboldt County, CA approximately 70 km downstream of Matthews Dam. We found relatively high densities of egg masses (39 to 59 masses / km). Egg masses were generally laid on small cobbles (mean ±SE diameter = 11 ± 0.24 cm) at depths between 0 and 20 cm, and 95% of egg masses were laid within 6 m of the wetted edge. Egg masses were disproportionately found in the tailouts of fast runs and glides, and found less often than expected in side arms, runs, and riffles than would be expected by chance. Breeding timing appeared to be more related to rapid decreases in stream flow variance than air temperature. Taken with previous information about the species, our results suggest that R. boylii rely on multiple cues to initiate breeding. Our results can be used to help inform breeding timing and habitat use by R. boylii breeding under natural flow regimes in Northern California. Our recommendations for future research include further investigating upland habitat use by post-metamorphic life stages factors that influence breeding site selection.

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Low reproductive success of the endangered Iberá Seedeater in its only known breeding site, the Iberá Wetlands, Argentina

The Condor ◽

10.1093/ornithapp/duab008 ◽

2021 ◽

Author(s):

Melanie Browne ◽

Sheela P Turbek ◽

Constanza Pasian ◽

Adrián S Di Giacomo

Keyword(s):

Breeding Season ◽

Migratory Birds ◽

Nest Survival ◽

Breeding Site ◽

Grassland Management ◽

Nest Site Selection ◽

Breeding Biology ◽

Cumulative Probability ◽

Conservation Area ◽

Northeastern Argentina

Abstract Subtropical grasslands are highly susceptible to habitat conversion and number among South America’s most threatened ecosystems. The grasslands of northeastern Argentina have been identified as a priority conservation area for threatened capuchino seedeaters because they constitute the main breeding area of these migratory birds. The Iberá Seedeater (Sporophila iberaensis) is a newly described species in the Iberá Wetlands in Argentina whose biology is still poorly understood. The endangered species inhabits grasslands but has only been reported to breed in the Iberá Wetlands ecoregion of northeastern Argentina. To explore the species’ association with grassland vegetation, we studied the breeding biology (clutch size, hatching success, and fledgling production) of the Iberá Seedeater and the main parameters that influence nest survival and nest-site selection. We conducted nest searches and banded adults and nestlings in Iberá National Park during the breeding seasons of 2016–2018. The breeding season of the Iberá Seedeater was highly synchronous and the cumulative probability of nest survival was 0.16. The daily nest survival rate decreased as the breeding season advanced, survival was lower for nests supported by Rhynchospora corymbosa than Paspalum durifolium, the two main nest substrates, and the main causes of nest failure were nest predation and strong winds. Additionally, the population exhibited male-biased site fidelity and a low female return rate. In contrast to other capuchinos, whose breeding biology is associated with upland grasslands, the Iberá Seedeater nested exclusively in flooded lowland grasslands on marsh plants. Thus, effective lowland grassland management is key to maintain the vegetation structure required for reproduction in the Iberá Seedeater.

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Population Status, Habitat Use and Breeding Biology of the Endangered Colombian Horned Lark in an Andean Wetland

Ardea ◽

10.5253/arde.v109i1.a6 ◽

2021 ◽

Vol 109 (1) ◽

Author(s):

Luis Alejandro Arias-Sosa ◽

Jimmy Alexander Vargas-Puentes ◽

Carolina Ramos-Montaño ◽

Ariel S. Espinosa-Blanco

Keyword(s):

Habitat Use ◽

Breeding Biology ◽

Population Status ◽

Horned Lark

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The influence of natural flow regimes on macroinvertebrate assemblages in a semiarid Mediterranean basin

Ecohydrology ◽

10.1002/eco.1274 ◽

2012 ◽

Vol 6 (3) ◽

pp. 363-379 ◽

Cited By ~ 42

Author(s):

O. Belmar ◽

J. Velasco ◽

C. Gutiérrez-Cánovas ◽

A. Mellado-Díaz ◽

A. Millán ◽

...

Keyword(s):

Mediterranean Basin ◽

Flow Regimes ◽

Macroinvertebrate Assemblages ◽

Natural Flow ◽

Natural Flow Regimes

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University campuses can contribute to wildlife conservation in urbanizing regions: a case study from Nigeria

Journal of Threatened Taxa ◽

10.11609/jott.6316.12.13.16736-16741 ◽

2020 ◽

Vol 12 (13) ◽

pp. 16736-16741

Author(s):

Iliyasu Simon ◽

Jennifer Che ◽

Lynne Baker

Keyword(s):

Habitat Use ◽

Wildlife Conservation ◽

Energy Use ◽

Predictor Variable ◽

Camera Traps ◽

Future Research ◽

Natural Habitats ◽

University Campuses ◽

Disturbed Areas ◽

Cricetomys Gambianus

Globally, colleges and universities are increasingly mandating sustainability and environmental protection into their practices. To date, such institutions have focused their efforts on recycling and energy-use reduction and less on the management and conservation of wildlife and wildlife habitats. However, in an increasingly urbanizing world, well-managed campuses can provide habitat and even refuge for wildlife species. On the campus of a sustainability-minded university in Nigeria, we used camera traps to determine the presence of wildlife and used occupancy modeling to evaluate factors that influenced the detectability and habitat use of two mammals for which we had sufficient detections: White-tailed Mongoose Ichneumia albicauda and Gambian Rat Cricetomys gambianus. Our intent was to gather baseline data on campus wildlife to inform future research and make recommendations for maintaining wildlife populations. We detected wildlife primarily within less-disturbed areas that contained a designated nature area, and the presence of a nature area was the key predictor variable influencing habitat use. No measured variables influenced detectability. This study supports other research that highlights the importance of undisturbed or minimally disturbed natural habitats on university campuses for wildlife, especially in increasingly built-up and developed regions. We recommend that institutions of higher education devote greater resources to making campuses wildlife-friendly and increase opportunities for students to engage in campus-based wildlife research and conservation and other sustainability-related programs.

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Optimizing environmental flows for multiple reaches affected by a multipurpose reservoir system in Taiwan: Restoring natural flow regimes at multiple temporal scales

Water Resources Research ◽

10.1029/2012wr012638 ◽

2013 ◽

Vol 49 (1) ◽

pp. 565-584 ◽

Cited By ~ 31

Author(s):

Jenq-Tzong Shiau ◽

Fu-Chun Wu

Keyword(s):

Environmental Flows ◽

Flow Regimes ◽

Temporal Scales ◽

Reservoir System ◽

Natural Flow ◽

Natural Flow Regimes ◽

Multipurpose Reservoir

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Investigating Diachronic Variation and Change in New Varieties of English

Advanced Methodologies and Technologies in Media and Communications - Advances in Multimedia and Interactive Technologies ◽

10.4018/978-1-5225-7601-3.ch003 ◽

2019 ◽

pp. 24-36

Author(s):

Rita Calabrese

Keyword(s):

Future Research ◽

Special Focus ◽

Specific Information ◽

Indian English ◽

Language Standardization ◽

New Varieties ◽

Methodological Procedures ◽

Language Universals ◽

Verb Particle Constructions ◽

Over Time

This contribution focuses on processes of language feature convergence which gradually lead to linguistic stabilization over time, whereby specific attention will be given to the process of Englishization in the South-Asian area. The chapter outlines some basic concepts pertaining language universals, contact, and change, as well as descriptive approaches to world varieties of English by referring to the feature classification proposed by Meshtrie and Bhatt. Then, as an explanatory case, it presents the results of a study of verb-particle constructions in a well-established variety of English (i.e., Indian English) obtained by sampling data from sources varying in time, genre, and register with a special focus on the methodological procedures and the analysis tools adopted to extract specific information from the data. Finally, the implications of those findings for future research on the process of language standardization in new varieties of English will be further explored.

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Making sense of the users of public sector accounting information and their needs

Journal of Public Budgeting Accounting & Financial Management ◽

10.1108/jpbafm-10-2018-0124 ◽

2019 ◽

Vol 31 (4) ◽

pp. 478-495 ◽

Cited By ~ 8

Author(s):

Jan van Helden ◽

Christoph Reichard

Keyword(s):

Financial Reporting ◽

Information Needs ◽

Accounting Information ◽

Influential Factors ◽

Future Research ◽

Specific Information ◽

Content Type ◽

Making Sense ◽

Actual Use ◽

User Groups

Purpose The purpose of this paper is to dismantle the complex issue of “use of accounting information (AI)” by pointing to different groups of information users, diverging interests and needs of these user groups and various influential factors on the usability and the actual use of AI. Design/methodology/approach This paper includes a literature review and conceptual reflections. Findings The review of recently published articles on the issue of “use of accounting information” presents an actual picture of the academic debate on purposes of use, user types, needs of various user groups and factors influencing the usability and the actual use of AI. The subsequent conceptual reflections deal with so far less regarded user groups, with options to strengthen the user perspective in budgeting and financial reporting, with approaches for engaging users in the content of accounting documents, with interrelations between user needs, usability and use intensity, including various antecedents of the different variables of the information-use issue. Research limitations/implications This paper presents promising routes for future research. Practical implications The paper emphasizes the importance of paying more attention to the specific information needs and the motivations of various stakeholder groups generally interested in using financial information. Originality/value The paper presents results of reviewing recent literature on the issue of “use of accounting information” and provides some insight into specific aspects of this issue.

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First record of Lopescladius Oliveira, 1967 (Chironomidae: Orthocladiinae) in the Piranhas-Açu River basin, Brazil, with ecological notes on its habitat use

Check List ◽

10.15560/11.1.1554 ◽

2015 ◽

Vol 11 (1) ◽

pp. 1554

Author(s):

Rafaela Lima de Farias ◽

Thuanny Fernanda Braga Alencar ◽

Elvio S.F. Medeiros

Keyword(s):

Habitat Use ◽

River Basin ◽

Rio Grande ◽

First Record ◽

The State ◽

Northeastern Brazil ◽

Future Research ◽

Intermittent Stream ◽

Ecological Aspects ◽

Chironomid Fauna

The present study describes a new site of occurrence for the genus Lopescladius in Brazil and reports the first record for the Piranhas-Açu River basin, in the state of Rio Grande do Norte, northeastern Brazil. This new occurrence expands the distribution of the genus and adds to the knowledge of the chironomid fauna. The presence of this genus in an intermittent stream highlights the importance of future research on this type of aquatic system as well as ecological aspects related to Lopescladius.

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