Results 51 to 60 of about 1,744 (197)

“Kill Two Birds with One Stone”: Urban Tree Species Classification Using Bi-Temporal Pléiades Images to Study Nesting Preferences of an Invasive Bird

Remote Sensing, 2017
This study presents the results of object-based classifications assessing the potential of bi-temporal Pléiades images for mapping broadleaf and coniferous tree species potentially used by the ring-necked parakeet Psittacula krameri for nesting in the ...
Marine Le Louarn, Philippe Clergeau, Elodie Briche, Magali Deschamps-Cottin   +3 more
doaj   +1 more source

Mapping breeding birds in a re-naturalized historical fortress: composition, structure and considerations about abundance vs. biomass comparisons

Rivista Italiana di Ornitologia - Research in Ornithology, 2023
Using the mapping method, I obtained data about a rich, even and diversified breeding bird assemblage inhabiting an abandoned and re-naturalized historical military fortress (Rome, central Italy).
Corrado Battisti
doaj   +1 more source

Behavioural shifts of bats during urban music festivals

Ecological Solutions and Evidence, Volume 6, Issue 4, October–December 2025.
We investigated how large outdoor music festivals affect bat activity in an urban green spaces. Although total nightly activity did not decline on concert nights, we showed activity during concert hours dropped significantly—by up to 42% for some species.
Theodore S. Brook, Huma Pearce, Jeff Waage   +2 more
wiley   +1 more source

Urban Foraging and Plant Toxicological Risks for Rose-Ringed Parakeets (Psittacula krameri) in Athens

Diversity
The Rose-ringed Parakeet (Psittacula krameri) is an invasive parrot increasingly established in European cities, including Athens, Greece, yet its diet and exposure to plant toxins in Mediterranean ecosystems remain poorly documented.
Mathis A. B. Christodoulopoulos, Efthimia Cotou, Nektarios Politakis, Nikolaos Tsekouras, Vasileios V. Paraskeuas, Yannis Kotzamanis, Georgios Christodoulopoulos, Athanasios C. Pappas   +7 more
doaj   +1 more source

Socio‐Economic Status and Non‐Native Species Drive Bird Ecosystem Service Provision in Urban Areas

Global Change Biology, Volume 31, Issue 7, July 2025.
Birds bring important benefits to people, like pest control and aesthetic enjoyment. We studied birds in cities across Spain and Portugal to see how income levels affect the benefits people get from nature. We found that higher income areas tended to have more bird species but, surprisingly, fewer of these benefits, while places with non‐native birds ...
Fabio Marcolin, Stefano Mammola, Riccardo Alba, Pedro Segurado, Luís Reino, Dan Chamberlain   +5 more
wiley   +1 more source

Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring-necked parakeet (Psittacula krameri)

Animal Biodiversity and Conservation, 2019
Stable isotope analyses (SIAs) have been widely used in recent years to infer the diet of many species. This isotopic approach requires using diet to tissue discrimination factors (DTDFs) for each prey type and predator tissue, i.e., to determine the ...
D. Mazzoni, N. A. Borray-Escalante, A. Ortega–Segalerva, L. Arroyo, J. González–Solís, J. C. Senar   +5 more
doaj   +3 more sources

Leucemia linfocítica crônica em periquito-de-colar (Psittacula krameri): primeiro relato de caso

Medicina Veterinária
O presente relato descreve um caso de leucemia linfocítica crônica (LLC) em periquito-de-colar (Psittacula krameri) fêmea, de 9 anos, encaminhada pelo Laboratório de Criação e Incubação de Animais Alternativos, Silvestres e Exóticos (LACRIAS-UFPR) ao ...
João Vitor Janesko Zaions, Gabrielle França Ribeiro, Gabriela Oliveira da Paz Augusto Pinto, Maritza Nunes Severiano, Thiago Francisco Costa Solak, Alaina Maria Correia, Rosangela Locatelli Dittrich   +6 more
doaj   +1 more source

Crowding in the city: losing and winning competitors of an invasive bird. [PDF]

PLoS ONE, 2014
Invasive species can take advantage of resources unexploited by natives (opportunism hypothesis) or they can exploit the same resources but more aggressively or efficiently (competition hypothesis), thus impacting native species.
Dailos Hernández-Brito, Martina Carrete, Ana G Popa-Lisseanu, Carlos Ibáñez, José L Tella   +4 more
doaj   +1 more source

Molecular characterization of Cryptosporidium isolates obtained from human immunodeficiency virus-infected individuals living in Switzerland, Kenya, and the United States. [PDF]

, 2000
A total of 22 Cryptosporidium isolates from human immunodeficiency virus-infected patients from Kenya, Switzerland, and the United States were examined at three genetic loci: the 18S ribosomal DNA, HSP-70, and acetyl coenzyme A synthetase genes.
Morgan, U.M., Weber, R., Xiao, L., Sulaiman, I., Thompson, R.C.A., Ndiritu, W., Lal, A.A., Moore, A., Deplazes, P.   +8 more
core   +2 more sources

FOGS: A SNPSTR Marker Database to Combat Wildlife Trafficking and a Cell Culture Bank for Ex‐Situ Conservation

Molecular Ecology Resources, Volume 25, Issue 4, May 2025.
ABSTRACT Illegal wildlife trade is a growing problem internationally. Poaching of animals not only leads to the extinction of populations and species but also has serious consequences for ecosystems and economies. This study introduces a molecular marker system that authorities can use to detect and substantiate wildlife trafficking.
Annika Mozer, Camilla Bruno Di‐Nizo, Albia Consul, Bruno Huettel, Richard Jäger, Ayodélé Akintayo, Christoph Erhardt, Lena Fenner, Dominik Fischer, Sophia Forat, France Gimnich, Peter Grobe, Sebastian Martin, Vikram Nathan, Ammar Saeed, Laura von der Mark, Christian Woehle, Klaus Olek, Bernhard Misof, Jonas J. Astrin   +19 more
wiley   +1 more source