1,720,998 research outputs found
Is Palmer paranoia a threat to conservation?
Full text linkMost wildlife biologists and hunters, like me, admittedly have less of a mainstream attitude toward weeds. Those of us who spend fall mornings behind bird dogs or summer days glassing butterflies look upon field edges and odd areas in a different light.This article is published as Janke, Adam. Is Palmer Paranoia a threat to conservation? Wallaces Farmer, July 14, 2017. Posted with permission.</p
Flipping the adult natural resources classroom to build community and learn in nature
Full text linkAdult-focused natural resources education is critical amid widespread challenges related to water quality, biodiversity declines, and climate change. Extension educators are poised to make impactful advances in natural resource education among adult learners when equipped with educational tools that improve knowledge and build connections among peers. The Mater Conservationist Program in Iowa sought to address this educational need through a flipped-classroom learning model evaluated in this report. Participants (n = 174) enrolled in 11 offerings of the program completed a multi-week educational curriculum that combined online instruction by university educators with in-person instruction led by local natural resources professionals and extension educators in a flipped classroom model. The approach ensured a standardized educational experience across the state but allowed for tailored, locally-focused education through in-person instruction on topics most important or relevant to local natural resource issues. Participants completing a post-course evaluation indicated widespread satisfaction (91% extremely or somewhat satisfied) in all three program elements – online instruction, in-person instruction, and networking opportunities. Participant self-assessed knowledge increased in each module topic between 2.8 and 3.8 points on a 10-point scale (P This article is published as Janke, Adam. "Flipping the adult natural resources classroom to build community and learn in nature." Natur.al Sciences Education 50 (2021): e20061. doi:10.1002/nse2.20061.</p
Prairie wetlands confer consistent migrant refueling conditions across a gradient of agricultural land use intensities
Full text linkIncreasing global demands for land to produce food, fiber, and energy threatens temperate grassland and wetland ecosystems, catalyzing a need to inform strategic and efficient approaches to conserve ecological function in these ecosystems. In the Prairie Pothole Region of North America, an extensive agricultural footprint has grown since the late 19th century and recently expanded in extent and intensity of cultivation in response to improved technology and global demands. Despite extensive modifications, many wetlands remain in a matrix of intensively farmed uplands in this landscape. We comprehensively evaluated contributions of those wetlands to spring-migrating ducks by studying two wetland-obligate foragers—lesser scaup (Aythya affinis) and bluewinged teal (Anas discors)—as they migrated to northern breeding ranges. We measured a comprehensive suite of physiological, ecological, and behavioral metrics important during migration in wetlands across a range of upland cultivation intensities at fine and coarse spatial extents. We found no systematic negative responses in invertebrate prey abundance, abundance of migrants, or lipid metabolism of migrant females across the cultivation intensity gradient. Further, abundance and physiology of blue-winged teal and some key invertebrate prey densities were higher in more intensively cultivated landscapes. Our results demonstrated extant wetlands in modern, intensively farmed landscapes make meaningful contributions to spring-migrating ducks despite likely negative impacts of proximate upland cultivation. This insight raises questions about the consequences of agricultural perturbations and the baseline functionality of wetlands in agriculturally productive landscapes that have implications for wetland restoration and conservation strategies employed here and in intensively farmed landscapes globally.This article is published as Janke, Adam K., Micheal J. Anteau, and Joshua D. Stafford. "Prairie wetlands confer consistent migrant refueling conditions across a gradient of agricultural land use intensities." Biological Conservation 229 (2019): 99-112. doi: 10.1016/j.biocon.2018.11.021.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Woodworking for Wildlife - Aldo Leopold Bench
No full textAldo Leopold is an internationally recognized figure in wildlife conservation and pioneering author and philosopher on environmental ethics and land stewardship. Born and raised in southeastern Iowa on the bluffs of the Mississippi River in Burlington, Leopold’s land ethic was born from hundreds of hours of careful observation outdoors in Iowa, Wisconsin, the American southwest, and other natural landscapes.</p
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