Robert Hagen

ORCID: 0000-0002-4342-9216
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Wildlife Ecology and Conservation
  • Ecology and biodiversity studies
  • Wildlife-Road Interactions and Conservation
  • Ecology and Vegetation Dynamics Studies
  • Species Distribution and Climate Change
  • Animal and Plant Science Education
  • Spine and Intervertebral Disc Pathology
  • Animal Behavior and Welfare Studies
  • Climate Change Communication and Perception
  • Demographic Trends and Gender Preferences
  • Primate Behavior and Ecology
  • Forest Ecology and Biodiversity Studies
  • Human-Animal Interaction Studies
  • Avian ecology and behavior
  • Foot and Ankle Surgery
  • Neurosurgical Procedures and Complications
  • Botany and Plant Ecology Studies
  • Rangeland Management and Livestock Ecology
  • Land Use and Ecosystem Services
  • Forest ecology and management
  • Anesthesia and Pain Management
  • Animal Ecology and Behavior Studies
  • Musculoskeletal pain and rehabilitation
  • Orthopedic Surgery and Rehabilitation
  • Geological Formations and Processes Exploration

Landwirtschaftlichen Zentrums Baden-Württemberg​
2025

Leibniz Institute for Zoo and Wildlife Research
2014-2023

Bundesanstalt für Wasserbau
2021

Akershus University Hospital
2020

Nordwestdeutsche Forstliche Versuchsanstalt
2016-2017

University of Freiburg
2013-2014

Freie Universität Berlin
2005

Martina Hansens Hospital
1988

University of Missouri
1983-1986

University of Missouri Hospital
1986

A. Cole Burton Christopher Beirne Kaitlyn M. Gaynor Catherine Sun Alys Granados and 95 more Maximilian L. Allen Jesse M. Alston Guilherme Costa Alvarenga Francisco S. Álvarez Zachary Amir Christine Anhalt‐Depies Cara L. Appel Stephanny Arroyo-Arce Guy A. Balme Avi Bar‐Massada Daniele Cristina Barcelos Evan G. Barr Erika L. Barthelmess Carolina Baruzzi Sayantani M. Basak Natalie Beenaerts Jonathan Belmaker Olgirda Belova Branko Bezarević Tori Bird Daniel A. Bogan Neda Bogdanović Andy J. Boyce Mark S. Boyce LaRoy Brandt Jedediah F. Brodie Jarred M. Brooke Jakub W. Bubnicki Francesca Cagnacci Benjamin Scott Carr João Carvalho Jim Casaer Rok Černe Chen Ron Emily Chow Marcin Churski Connor Cincotta Duško Ćirović Terry Coates Justin A. Compton Courtney A. C. Coon Michael V. Cove Anthony P. Crupi Simone Dal Farra Andrea K. Darracq Miranda L. Davis Kimberly Dawe Valérie De Waele Esther Descalzo Tom A. Diserens Jakub Drimaj Martin Duľa Susan N. Ellis‐Felege Caroline N. Ellison Alper Ertürk Jean Fantle‐Lepczyk Jorie Favreau Mitchell Fennell Pablo Ferreras Francesco Ferretti Christian Fiderer Laura Finnegan Jason T. Fisher M. Caitlin Fisher‐Reid Elizabeth A. Flaherty Urša Fležar Jiří Flousek Jennifer M. Foca Adam T. Ford Barbara Franzetti Sandra Frey Sarah R. Fritts Šárka Frýbová Brett J. Furnas Brian D. Gerber Hayley M. Geyle Diego G. Giménez Anthony J. Giordano Tomislav Gomerčić Matthew E. Gompper Diogo Maia Gräbin Morgan Gray Austin Green Robert Hagen Robert Hagen Steven Hammerich Cathariné C. Hanekom Christopher P. Hansen Steven C. M. Hasstedt Mark Hebblewhite Marco Heurich Tim R. Hofmeester Tru Hubbard David S. Jachowski Patrick A. Jansen

Abstract Wildlife must adapt to human presence survive in the Anthropocene, so it is critical understand species responses humans different contexts. We used camera trapping as a lens view mammal changes activity during COVID-19 pandemic. Across 163 sampled 102 projects around world, amount and timing of animal varied widely. Under higher activity, mammals were less active undeveloped areas but unexpectedly more developed while exhibiting greater nocturnality. Carnivores most sensitive,...

10.1038/s41559-024-02363-2 article EN cc-by Nature Ecology & Evolution 2024-03-18

The throw and its modifications are integral components of many sports. This study correlates case histories acute injuries in throwing with a biomechanical analysis the ing mechanism. Comparisons made similar kick analyzed by same film technique computer program. Just prior to ball release, pitching arm extends through an arc about 73 degrees 40 msec, beginning elbow flexed at 80 degrees. produces axial load on humerus coincides pulse external torque shoulder. acts as stress protection...

10.1177/036354658000800210 article EN The American Journal of Sports Medicine 1980-03-01

The rapid spread and diversification of outdoor recreation can impact on wildlife in various ways, often leading to the avoidance disturbed habitats. To mitigate human-wildlife conflicts, spatial zonation schemes be implemented separate human activities from key habitats, e.g., by designating undisturbed refuges or areas with some level restriction land use. However, mitigation practice rarely considers temporal differences interactions. We used GPS telemetry data 15 red deer study seasonal...

10.1371/journal.pone.0175134 article EN cc-by PLoS ONE 2017-05-03

Compression ankle arthrodesis remains a widely accepted surgical procedure. However, uniform efficacious results are not always obtainable. Seventeen patients treated by compression showed 11 fusions, or 65% union rate, with an average immobilization period of five months. The nonunion group six (35%), ten months immobilization, included two who were below-knee amputations. failures demonstrated basic violations surgical, roentgenographic, and biomechanical tenets. In particular, the...

10.1097/00003086-198601000-00019 article EN Clinical Orthopaedics and Related Research 1986-01-01

Eighteen patients who had symptomatic spondylolysis or Grade-I spondylolisthesis, and whose symptoms not been relieved by non-operative treatment, were operated on using the Buck method for bone-grafting internal fixation of defect pars interarticularis with screws. There six male twelve female average age was twenty years (range, fourteen to thirty-eight years). The amount slipping ranged from zero ten millimeters. After an period follow-up forty-one months twenty-four seventy-two months),...

10.2106/00004623-198870010-00004 article EN Journal of Bone and Joint Surgery 1988-01-01

Abstract Nowadays, citizens collaborate increasingly with scientists in citizen science (CS) projects on environmental issues. CS often have educational goals and aim to increase citizens' knowledge the ultimate goal of fostering positive attitudes toward science. To date, little is known about extent which strengthen interrelationship between attitudes. Based previous research, it has been suggested that knowledge–attitude relationship could be further examined by focusing different...

10.1002/tea.21697 article EN cc-by Journal of Research in Science Teaching 2021-05-04

Many animals must adapt their movements to different conditions encountered during life phases, such as when exploring extraterritorial areas for dispersal, foraging or breeding. To better understand how move in movement we asked whether patterns differ between one way directed movements, the transient phase of dispersal two exploratory-like excursions stationary movements. We GPS collared red foxes a rural area southern Germany 2020 and 2023. Using random forest model, analyzed parameters,...

10.1186/s40462-024-00526-1 article EN cc-by Movement Ecology 2025-01-16

Every year, there are millions of documented vehicle collisions involving cervids across Europe and North America. While temporal patterns in collision occurrence relatively well described, few studies have targeted deer behaviour as a critical component prevention. In this study, we investigated weekly daily road crossing roe deer. Using events movement data obtained from GPS telemetry, employed mixed-effect models to explain frequency timing crossings at five segments by number predictors...

10.1371/journal.pone.0184761 article EN cc-by PLoS ONE 2017-09-27

Abstract Citizen science projects are crucial for engaging citizens in conservation efforts. Although attitudes toward engagement citizen were mostly considered an outcome of participation, may also have a certain attitude when starting with project. Moreover, there is lack studies that consider changes over longer periods time. Therefore, this research, we present two-wave data from four field project about urban wildlife ecology using cross-lagged panel analyses. We investigated the...

10.1093/biosci/biad003 article EN cc-by-nc BioScience 2023-03-01

Abstract Public opinion can have a decisive influence on conservation actions leading to need understand how public is formed. In survey with representative sample of the German population, participants answered questions about foxes in two consecutive years. Different versions leaflet were distributed 2448 before second interview. We compared narrative text presentation non‐narrative list facts and examined use photographs schematic graphs. assessed format socio‐demographic factors affected...

10.1111/csp2.13089 article EN cc-by Conservation Science and Practice 2024-02-26

Studying species interactions and niche segregation under human pressure provides important insights into adaptation, community functioning ecosystem stability. Due to their high plasticity in behaviour diet, urban mesocarnivores are ideal for studying assembly novel communities. We analysed the spatial temporal of an mesocarnivore composed red fox Vulpes vulpes marten Martes sp. as native species, raccoon Procyon lotor invasive cat Felis catus a domestic combination with disturbance...

10.1111/1365-2656.13635 article EN cc-by-nc-nd Journal of Animal Ecology 2021-11-14

Numerous studies have examined whether the primary and/or secondary sex ratio in mammals, including humans, deviates from an equilibrium of 1:1. Although effect size variation is expected to be low, a large sample allows identification even small deviations parity. In this study, we investigated roe deer (Capreolus capreolus) offspring at birth approaches parity, using data set tagged Baden-Württemberg (Germany, 1972-2019, N = 12,437). addition, systematic re-analysis available on ratios was...

10.1002/ece3.8938 article EN Ecology and Evolution 2022-05-01

Abstract In citizen science (CS) projects, citizens who are not professional scientists participate in scientific research. Besides serving research purposes, CS projects provide participants opportunities for inquiry‐based learning to promote their topic‐specific knowledge and reasoning skills. Previous suggests that need skills engage activities learn from inquiry projects. Participants' skills, therefore, might enhance the resulting at end of a project. On other hand, themselves outcome...

10.1002/tea.21835 article EN cc-by Journal of Research in Science Teaching 2022-11-28

An athlete was filmed at high speed to anatomically plot the position of vertebrae during several pole vaults. A computer analysis adapted from a previously described program (Gainor, BJ, et al: The kick: Bio mechanics and collision injury. Am J Sports Med 6: 185-193, 1978) used quantify kinematic data. thoracic lumbar vaulter began in neutral but rapidly hyper- extended 40° plant. spine subse quently flexed 130° 0.65 seconds as uncoiled propelled towards bar. Angular velocities reached maxi...

10.1177/036354658301100201 article EN The American Journal of Sports Medicine 1983-03-01

The prevailing trend of increasing urbanization and habitat fragmentation makes knowledge species’ requirements distribution a crucial factor in conservation urban planning. Species models (SDMs) offer powerful toolboxes for discriminating the underlying environmental factors driving suitability. Nevertheless, challenges SDMs emerge if multiple data sets - often sampled with different intention therefore sampling scheme – can complement each other increase predictive accuracy. Here, we...

10.3389/fevo.2022.881247 article EN cc-by Frontiers in Ecology and Evolution 2022-08-03

Abstract In temperate habitats, the vegetation onset in spring affects life cycle activities of large herbivores. For one species herbivore, roe deer ( Capreolus capreolus ), parturition is tied to peak resource availability. However, recent long‐term studies date found only limited support for its earlier occurrence with an spring. this study, data from a project (1973–2019) southern Germany (Baden‐Württemberg; elevation 101–1036 m; 16,130 tagged fawns) were used investigate whether advance...

10.1002/ecs2.3819 article EN Ecosphere 2021-11-01

Physiological investigations of cervid eyes have revealed two different types cones indicating high visual sensitivity in the ‘blue’ and ‘green’ spectral range (400–450 nm 510–540 nm). Although detailed knowledge about light perception large mammals is still missing, reflecting devices such as wildlife warning reflectors are frequently used animalvehicle collision mitigation. Light wavelengths 440–490 (‘blue’ light) has recently been advocated to evoke a effect cervids due its rare...

10.2981/wlb.00331 article EN cc-by Wildlife Biology 2017-01-01
Coming Soon ...