Results 61 to 70 of about 158,614 (342)

Community dynamics of insular biotas in space and time [PDF]

open access: yes, 2004
The various features determining species distributions remain enigmatic in ecology. This thesis deals with the spatial and temporal dynamics of land birds on the islands of the Dahlak archipelago, the Red Sea, and of mammals, birds and reptiles among the
Azeria, Ermias Tesfamichael
core  

Influence of spatial and temporal dynamics of agricultural practices on the lesser kestrel [PDF]

open access: yes, 2011
1. European agriculture is facing dramatic changes that are likely to have marked impacts on farmland biodiversity. There is an urgent need to develop land management strategies compatible with the conservation of biodiversity.2.
Amano   +42 more
core   +1 more source

Post-fledging Dependent Behaviour, Dispersion and Migration of Young Eastern Imperial Eagles from Slovakia as Revealed by Satellite Telemetry

open access: yesПернатые хищники и их охрана, 2018
In 2005, five nestling Imperial Eagles (Aquila heliaca) were fitted with battery-powered GPS Satellite Transmitters (PTTs) in Slovakia to study their behaviour after fledging, two of them in the east and the other three in the west of the country.
Bernd-Ulrich Meyburg   +4 more
doaj  

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

open access: yesAdvanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello   +7 more
wiley   +1 more source

Antennae on transmitters on free-living marine animals: Balancing budgets on the high wire [PDF]

open access: yes, 2004
The effect of externally mounted antennae on the energetics of penguins was studied by mounting various antennae on a transducer fixed to a model Magellanic penguin Spheniscus magellanicus to determine drag, run at speeds of up to 2 m s–1 in a swim canal.
Kreye, Jan M.   +3 more
core   +1 more source

Nurr1 Orchestrates Claustrum Development and Functionality

open access: yesAdvanced Science, EarlyView.
Nurr1 (Nr4a2) is the master transcription factor to control claustrum morphogenesis and cell fate decision postmitotically by inhibiting intracellular G‐protein signaling. Nurr1 deficiency alters the transcriptomic profiles of subcortical claustral neurons into neocortical insular neurons, resulting in defected claustrum development, impaired axonal ...
Kuo Yan   +12 more
wiley   +1 more source

Environmental effects on magnetic fluorescent powder development of fingermarks on bird of prey feathers [PDF]

open access: yes, 2019
A comparison study of the effects of environmental conditions on the development of latent fingermarks on raptor feathers using green magnetic fluorescent powder was undertaken using both sebaceous loaded and natural fingermark deposits.
Farrugia, K. J.   +4 more
core   +2 more sources

Events

open access: yesПернатые хищники и их охрана, 2015
In April 2015 a charity program “PROTECTED AREAS – LIFE SAVER” was launched for reserved areas and national parks in Russia and CIS countries. The project “Eagles of Russia” received the support of the Russian Geographical Society for the second time. 
Igor V. Karyakin, Elvira G. Nikolenko
doaj   +2 more sources

Ecosystem‐Centered Robot Design: Toward Ecoresorbable Sustainability Robots (ESRs)

open access: yesAdvanced Science, EarlyView.
Robots exploring natural ecosystems can support monitoring and conservation, but must adopt ecosystem‐centered design to avoid pollution, waste, and damage. This review proposes guidelines for co‐designing ecoresorbable sustainability robots (ESRs), uniting materials, robotics, and ecological contexts in a single framework.
Tülin Yılmaz Nayır   +4 more
wiley   +1 more source

Diet of the weasel in Hungary [PDF]

open access: yes, 2007
The diet of weasel (Mustela nivalis) collected in agricultural mosaic plain regions of Hugary was studied using the analysis of stomach and rectum contents (n = 155).
Heltai, Miklós, Lanszki, József
core  

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