Search

Your search keyword '"Fischer, Christina"' showing total 492 results
Start Over Author "Fischer, Christina"
492 results on '"Fischer, Christina"'

3. Evaluating expert‐based habitat suitability information of terrestrial mammals with GPS‐tracking data

Author

Broekman, Maarten JE, Hilbers, Jelle P, Huijbregts, Mark AJ, Mueller, Thomas, Ali, Abdullahi H, Andrén, Henrik, Altmann, Jeanne, Aronsson, Malin, Attias, Nina, Bartlam‐Brooks, Hattie LA, Beest, Floris M, Belant, Jerrold L, Beyer, Dean E, Bidner, Laura, Blaum, Niels, Boone, Randall B, Boyce, Mark S, Brown, Michael B, Cagnacci, Francesca, Černe, Rok, Chamaillé‐Jammes, Simon, Dejid, Nandintsetseg, Dekker, Jasja, Desbiez, Arnaud LJ, Díaz‐Muñoz, Samuel L, Fennessy, Julian, Fichtel, Claudia, Fischer, Christina, Fisher, Jason T, Fischhoff, Ilya, Ford, Adam T, Fryxell, John M, Gehr, Benedikt, Goheen, Jacob R, Hauptfleisch, Morgan, Hewison, AJ Mark, Hering, Robert, Heurich, Marco, Isbell, Lynne A, Janssen, René, Jeltsch, Florian, Kaczensky, Petra, Kappeler, Peter M, Krofel, Miha, LaPoint, Scott, Latham, A David M, Linnell, John DC, Markham, A Catherine, Mattisson, Jenny, Medici, Emilia Patricia, Mourão, Guilherme Miranda, Van Moorter, Bram, Morato, Ronaldo G, Morellet, Nicolas, Mysterud, Atle, Mwiu, Stephen, Odden, John, Olson, Kirk A, Ornicāns, Aivars, Pagon, Nives, Panzacchi, Manuela, Persson, Jens, Petroelje, Tyler, Rolandsen, Christer Moe, Roshier, David, Rubenstein, Daniel I, Saïd, Sonia, Salemgareyev, Albert R, Sawyer, Hall, Schmidt, Niels Martin, Selva, Nuria, Sergiel, Agnieszka, Stabach, Jared, Stacy‐Dawes, Jenna, Stewart, Frances EC, Stiegler, Jonas, Strand, Olav, Sundaresan, Siva, Svoboda, Nathan J, Ullmann, Wiebke, Voigt, Ulrich, Wall, Jake, Wikelski, Martin, Wilmers, Christopher C, Zięba, Filip, Zwijacz‐Kozica, Tomasz, Schipper, Aafke M, and Tucker, Marlee A

Subjects
Climate Action, expert opinion, GPS, habitat suitability, habitat type, habitat use, IUCN, mammals, movement, selection ratio, telemetry, Ecology
Abstract

AimMacroecological studies that require habitat suitability data for many species often derive this information from expert opinion. However, expert-based information is inherently subjective and thus prone to errors. The increasing availability of GPS tracking data offers opportunities to evaluate and supplement expert-based information with detailed empirical evidence. Here, we compared expert-based habitat suitability information from the International Union for Conservation of Nature (IUCN) with habitat suitability information derived from GPS-tracking data of 1,498 individuals from 49 mammal species.LocationWorldwide.Time period1998-2021.Major taxa studiedForty-nine terrestrial mammal species.MethodsUsing GPS data, we estimated two measures of habitat suitability for each individual animal: proportional habitat use (proportion of GPS locations within a habitat type), and selection ratio (habitat use relative to its availability). For each individual we then evaluated whether the GPS-based habitat suitability measures were in agreement with the IUCN data. To that end, we calculated the probability that the ranking of empirical habitat suitability measures was in agreement with IUCN's classification into suitable, marginal and unsuitable habitat types.ResultsIUCN habitat suitability data were in accordance with the GPS data (> 95% probability of agreement) for 33 out of 49 species based on proportional habitat use estimates and for 25 out of 49 species based on selection ratios. In addition, 37 and 34 species had a > 50% probability of agreement based on proportional habitat use and selection ratios, respectively.Main conclusionsWe show how GPS-tracking data can be used to evaluate IUCN habitat suitability data. Our findings indicate that for the majority of species included in this study, it is appropriate to use IUCN habitat suitability data in macroecological studies. Furthermore, we show that GPS-tracking data can be used to identify and prioritize species and habitat types for re-evaluation of IUCN habitat suitability data.

Published
2022

5. A multicenter analytical performance evaluation of a multiplexed immunoarray for the simultaneous measurement of biomarkers of micronutrient deficiency, inflammation and malarial antigenemia

Author

Brindle, Eleanor, Lillis, Lorraine, Barney, Rebecca, Bansil, Pooja, Hess, Sonja Y, Wessells, K Ryan, Ouédraogo, Césaire T, Arredondo, Francisco, Barker, Mikaela K, Craft, Neal E, Fischer, Christina, Graham, James L, Havel, Peter J, Karakochuk, Crystal D, Zhang, Mindy, Mussai, Ei-Xia, Mapango, Carine, Randolph, Jody M, Wander, Katherine, Pfeiffer, Christine M, Murphy, Eileen, and Boyle, David S

Subjects
Clinical Research, Good Health and Well Being, C-Reactive Protein, Ferritins, Immunoassay, Inflammation, Multicenter Studies as Topic, Proteins, Software, General Science & Technology
Abstract

A lack of comparative data across laboratories is often a barrier to the uptake and adoption of new technologies. Furthermore, data generated by different immunoassay methods may be incomparable due to a lack of harmonization. In this multicenter study, we describe validation experiments conducted in a single lab and cross-lab comparisons of assay results to assess the performance characteristics of the Q-plex™ 7-plex Human Micronutrient Array (7-plex), an immunoassay that simultaneously quantifies seven biomarkers associated with micronutrient (MN) deficiencies, inflammation and malarial antigenemia using plasma or serum; alpha-1-acid glycoprotein, C-reactive protein, ferritin, histidine-rich protein 2, retinol binding protein 4, soluble transferrin receptor, and thyroglobulin. Validations included repeated testing (n = 20 separately prepared experiments on 10 assay plates) in a single lab to assess precision and linearity. Seven independent laboratories tested 76 identical heparin plasma samples collected from a cohort of pregnant women in Niger using the same 7-plex assay to assess differences in results across laboratories. In the analytical validation experiments, intra- and inter-assay coefficients of variation were acceptable at

Published
2021

7. Effects of body size on estimation of mammalian area requirements

Author

Noonan, Michael J, Fleming, Christen H, Tucker, Marlee A, Kays, Roland, Harrison, Autumn‐Lynn, Crofoot, Margaret C, Abrahms, Briana, Alberts, Susan C, Ali, Abdullahi H, Altmann, Jeanne, Antunes, Pamela Castro, Attias, Nina, Belant, Jerrold L, Beyer, Dean E, Bidner, Laura R, Blaum, Niels, Boone, Randall B, Caillaud, Damien, Paula, Rogerio Cunha, la Torre, J Antonio, Dekker, Jasja, DePerno, Christopher S, Farhadinia, Mohammad, Fennessy, Julian, Fichtel, Claudia, Fischer, Christina, Ford, Adam, Goheen, Jacob R, Havmøller, Rasmus W, Hirsch, Ben T, Hurtado, Cindy, Isbell, Lynne A, Janssen, René, Jeltsch, Florian, Kaczensky, Petra, Kaneko, Yayoi, Kappeler, Peter, Katna, Anjan, Kauffman, Matthew, Koch, Flavia, Kulkarni, Abhijeet, LaPoint, Scott, Leimgruber, Peter, Macdonald, David W, Markham, A Catherine, McMahon, Laura, Mertes, Katherine, Moorman, Christopher E, Morato, Ronaldo G, Moßbrucker, Alexander M, Mourão, Guilherme, O'Connor, David, Oliveira‐Santos, Luiz Gustavo R, Pastorini, Jennifer, Patterson, Bruce D, Rachlow, Janet, Ranglack, Dustin H, Reid, Neil, Scantlebury, David M, Scott, Dawn M, Selva, Nuria, Sergiel, Agnieszka, Songer, Melissa, Songsasen, Nucharin, Stabach, Jared A, Stacy‐Dawes, Jenna, Swingen, Morgan B, Thompson, Jeffrey J, Ullmann, Wiebke, Vanak, Abi Tamim, Thaker, Maria, Wilson, John W, Yamazaki, Koji, Yarnell, Richard W, Zieba, Filip, Zwijacz‐Kozica, Tomasz, Fagan, William F, Mueller, Thomas, and Calabrese, Justin M

Subjects
Generic health relevance, Life on Land, Animals, Body Size, Conservation of Natural Resources, Endangered Species, Homing Behavior, Humans, Mammals, allometry, animal movement, area-based conservation, autocorrelation, home range, kernel density estimation, reserve design, scaling, alometría, autocorrelación, conservación basada en áreas, diseño de reserva, distribución local, escalamiento, estimación de densidad del núcleo, movimiento de mamíferos, 保护区设计, 动物移动, 区域保护, 家域, 异速增长, 标度, 核密度估计, 自相关, Environmental Sciences, Biological Sciences, Agricultural and Veterinary Sciences, Ecology
Abstract

Accurately quantifying species' area requirements is a prerequisite for effective area-based conservation. This typically involves collecting tracking data on species of interest and then conducting home-range analyses. Problematically, autocorrelation in tracking data can result in space needs being severely underestimated. Based on the previous work, we hypothesized the magnitude of underestimation varies with body mass, a relationship that could have serious conservation implications. To evaluate this hypothesis for terrestrial mammals, we estimated home-range areas with global positioning system (GPS) locations from 757 individuals across 61 globally distributed mammalian species with body masses ranging from 0.4 to 4000 kg. We then applied block cross-validation to quantify bias in empirical home-range estimates. Area requirements of mammals 1, meaning the scaling of the relationship changed substantially at the upper end of the mass spectrum.

Published
2020

19. A comprehensive analysis of autocorrelation and bias in home range estimation

Author

Noonan, Michael J., Tucker, Marlee A., Fleming, Christen H., Akre, Thomas S., Alberts, Susan C., Ali, Abdullahi H., Altmann, Jeanne, Antunes, Pamela Castro, Belant, Jerrold L., Beyer, Dean, Blaum, Niels, Böhning-Gaese, Katrin, Cullen, Laury, de Paula, Rogerio Cunha, Dekker, Jasja, Drescher-Lehman, Jonathan, Farwig, Nina, Fichtel, Claudia, Fischer, Christina, Ford, Adam T., Goheen, Jacob R., Janssen, René, Jeltsch, Florian, Kauffman, Matthew, Kappeler, Peter M., Koch, Flávia, LaPoint, Scott, Markham, A. Catherine, Medici, Emilia Patricia, Morato, Ronaldo G., Nathan, Ran, Oliveira-Santos, Luiz Gustavo R., Olson, Kirk A., Patterson, Bruce D., Paviolo, Agustin, Ramalho, Emiliano Esterci, Rösner, Sascha, Schabo, Dana G., Selva, Nuria, Sergiel, Agnieszka, da Silva, Marina Xavier, Spiegel, Orr, Thompson, Peter, Ullmann, Wiebke, Zięba, Filip, Zwijacz-Kozica, Tomasz, Fagan, William F., Mueller, Thomas, and Calabrese, Justin M.

Published
2019

22. Moving in the Anthropocene : Global reductions in terrestrial mammalian movements

Author

Tucker, Marlee A., Böhning-Gaese, Katrin, Fagan, William F., Fryxell, John M., Van Moorter, Bram, Alberts, Susan C., Ali, Abdullahi H., Allen, Andrew M., Attias, Nina, Avgar, Tal, Bartlam-Brooks, Hattie, Bayarbaatar, Buuveibaatar, Belant, Jerrold L., Bertassoni, Alessandra, Beyer, Dean, Bidner, Laura, van Beest, Floris M., Blake, Stephen, Blaum, Niels, Bracis, Chloe, Brown, Danielle, de Bruyn, P. J. Nico, Cagnacci, Francesca, Calabrese, Justin M., Camilo-Alves, Constança, Chamaillé-Jammes, Simon, Chiaradia, Andre, Davidson, Sarah C., Dennis, Todd, DeStefano, Stephen, Diefenbach, Duane, Douglas-Hamilton, Iain, Fennessy, Julian, Fichtel, Claudia, Fiedler, Wolfgang, Fischer, Christina, Fischhoff, Ilya, Fleming, Christen H., Ford, Adam T., Fritz, Susanne A., Gehr, Benedikt, Goheen, Jacob R., Gurarie, Eliezer, Hebblewhite, Mark, Heurich, Marco, Hewison, A. J. Mark, Hof, Christian, Hurme, Edward, Isbell, Lynne A., Janssen, René, Jeltsch, Florian, Kaczensky, Petra, Kane, Adam, Kappeler, Peter M., Kauffman, Matthew, Kays, Roland, Kimuyu, Duncan, Koch, Flavia, Kranstauber, Bart, LaPoint, Scott, Leimgruber, Peter, Linnell, John D. C., López-López, Pascual, Markham, A. Catherine, Mattisson, Jenny, Medici, Emilia Patricia, Mellone, Ugo, Merrill, Evelyn, de Miranda Mourão, Guilherme, Morato, Ronaldo G., Morellet, Nicolas, Morrison, Thomas A., Díaz-Muñoz, Samuel L., Mysterud, Atle, Nandintsetseg, Dejid, Nathan, Ran, Niamir, Aidin, Odden, John, O’Hara, Robert B., Oliveira-Santos, Luiz Gustavo R., Olson, Kirk A., Patterson, Bruce D., de Paula, Rogerio Cunha, Pedrotti, Luca, Reineking, Björn, Rimmler, Martin, Rogers, Tracey L., Rolandsen, Christer Moe, Rosenberry, Christopher S., Rubenstein, Daniel I., Safi, Kamran, Saïd, Sonia, Sapir, Nir, Sawyer, Hall, Schmidt, Niels Martin, Selva, Nuria, Sergiel, Agnieszka, Shiilegdamba, Enkhtuvshin, Silva, João Paulo, Singh, Navinder, Solberg, Erling J., Spiegel, Orr, Strand, Olav, Sundaresan, Siva, Ullmann, Wiebke, Voigt, Ulrich, Wall, Jake, Wattles, David, Wikelski, Martin, Wilmers, Christopher C., Wilson, John W., Wittemyer, George, Zięba, Filip, Zwijacz-Kozica, Tomasz, and Mueller, Thomas

Published
2018

31. Ecosystem functions of rare arable plants

Author

Albrecht, Harald (Priv.-Doz. Dr.), Albrecht, Harald (Priv.-Doz. Dr.);Fischer, Christina (Prof. Dr.);Schäfer, Hanno (Prof. Dr.), Twerski, Alina, Albrecht, Harald (Priv.-Doz. Dr.), Albrecht, Harald (Priv.-Doz. Dr.);Fischer, Christina (Prof. Dr.);Schäfer, Hanno (Prof. Dr.), and Twerski, Alina

Abstract

Rare arable plants are especially affected by agricultural intensification. Better understanding of their ecosystem functions could prove their nature conservation value and provide basis for biodiversity management recommendations in agroecosystems. We analysed the effects of rare arable plants on following ecosystem functions: their contribution to phytodiversity, their impact on soil fertility, on productivity, on flower-visiting wild bees and biocontrol. This study provides opportunities for both conservation of rare arable plants and improvement of agroecosystem functioning., Seltene Ackerwildkräuter sind von der Intensivierung der Landwirtschaft besonders stark betroffen. Wissen um ihre Ökosystemfunktionen könnte ihren Wert für den Naturschutz belegen und Empfehlungen für das Biodiversitätsmanagement in Agrarökosystemen liefern. In dieser Studie wurde der Einfluss seltener Ackerwildkräuter auf folgende Ökosystemfunktionen analysiert: ihr Beitrag zur Phytodiversität, ihre Auswirkungen auf die Bodenfruchtbarkeit, die Produktivität, auf blütenbesuchende Wildbienen und auf die biologische Schädlingsregulierung. Diese Studie bietet Erkenntnisse sowohl über den Erhalt seltener Ackerwildkräuter, als auch für die Verbesserung der Ökosystemfunktionen von Agrarökosystemen.

Published
2023

43. Harnessing the biodiversity value of Central and Eastern European farmland

Author

Sutcliffe, Laura M. E., Batáry, Péter, Kormann, Urs, Báldi, András, Dicks, Lynn V., Herzon, Irina, Kleijn, David, Tryjanowski, Piotr, Apostolova, Iva, Arlettaz, Raphaël, Aunins, Ainars, Aviron, Stéphanie, Baležentienė, Ligita, Fischer, Christina, Halada, Lubos, Hartel, Tibor, Helm, Aveliina, Hristov, Iordan, Jelaska, Sven D., Kaligarič, Mitja, Kamp, Johannes, Klimek, Sebastian, Koorberg, Pille, Kostiuková, Jarmila, Kovács-Hostyánszki, Anikó, Kuemmerle, Tobias, Leuschner, Christoph, Lindborg, Regina, Loos, Jacqueline, Maccherini, Simona, Marja, Riho, Máthé, Orsolya, Paulini, Inge, Proença, Vânia, Rey-Benayas, José, Sans, F. Xavier, Seifert, Charlotte, Stalenga, Jarosław, Timaeus, Johannes, Török, Péter, van Swaay, Chris, Viik, Eneli, and Tscharntke, Teja

Published
2015

Catalog

Books, media, physical & digital resources
See catalog results