Until now, arguments and debate about the ecological impacts of dog-walking have remained subjective and unresolved because experimental evidence has been lacking.
But the first clear evidence that birds perceive dogs as predators and avoid dog-walking areas is published today in Biology Letters, reporting research by UNSW biologist Peter Banks.
“We found in field studies that dog-walking in bushland causes a 35 percent reduction in bird diversity – the number of species – and a 41 percent reduction in abundance – the number of individual birds in an area,” says Dr Banks.
“The effect occurs even in areas where dog-walking is common and where they are prohibited, indicating that birds don’t become accustomed to continued disturbance by dogs.
“This evidence clearly supports the long term prohibition of dog-walking from sensitive conservation areas,” Banks says.
The revelation has immediate implications for popular recreation activities such as bird-watching and eco-tourism, where visitor satisfaction has a strong relationship to the number of species seen.
The experiment was conducted at 90 sites in the Hornsby-Berowra-Cowan regions, 35kms north of Sydney, Australia. The area was chosen because it contains remnants of bushland with trails that are either frequently dog-walked or where dog-walking is prohibited.
The experiment used three conditions to study dogs’ impact on birds: (1) a person walking a dog on a lead on a trail; (2) a person walking alone on a trail; (3) a control condition with no dog walking or humans.
Observers monitored all native birds seen or heard within 50 metres of a 250-metre trail. Monitoring commenced 20 seconds after the walker/dog-walker had set off and continued for 10 minutes.
Ground-dwellings birds appeared most affected: 50 percent of bird species observed in control sites were absent in dog-walked sites. The effect of dog-walking was most pronounced in the area immediately adjacent to the site where dogs were walked, according to Dr Banks.
“There were 76 fewer birds within 10 metres of the trail when dog-walking occurred compared to control sites, suggesting birds were seeking refuge away from the immediate vicinity of threat."
The particular sensitivity of ground-dwelling birds to dog-walking was of concern because it could lead to a “cascade” of behavioural changes that could further threaten these species, Dr Banks says.
Dog-walking was also likely to affect the accuracy of wildlife surveys that are used to map bird distributions around the world.
Dr. Peter Banks | EurekAlert!
100 % Organic Farming in Bhutan – a Realistic Target?
15.06.2018 | Humboldt-Universität zu Berlin
What the size distribution of organisms tells us about the energetic efficiency of a lake
05.06.2018 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.
From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
18.06.2018 | Earth Sciences
18.06.2018 | Process Engineering
18.06.2018 | Life Sciences