Navigation Links
50 years of bird poop links DDT with changing bird menus

New research findings highlight how deposits of animal droppings are scientifically important for determining the impact of environmental change on threatened species.

Analysis of 50 years' bird droppings inside a large decommissioned chimney on Queen's campus, provided evidence that DDT and bird diet may have played a role, in a long-term decline for populations of insect-eating birds in North America. The chimney had been a roosting spot for chimney swifts.

"Certainly there are many other deposits in large chimneys around North America and elsewhere, forming important environmental time capsules," says biology professor and co-author John P. Smol, Canada Research Chair in Environmental Change, and previous winner of the Natural Sciences and Engineering Research Council of Canada (NSERC) Herzberg Gold Medal as Canada's top scientist. "It may be a stinky job, but someone has to do it!"

Researchers at Queen's University Paleoecological Environmental Assessment and Research Lab (PEARL) developed a protocol for sampling the accumulation of droppings. They created a profile of the chimney swift guano deposit, then recruited experts to analyze different parts of the profile.

DDT use peaked at the same time there was a dramatic reduction in the abundance of beetles insects especially susceptible to DDT in the diet of swifts, according to analysis of the pile of droppings. This illustrates an impact of DDT that adds to its already infamous role in the thinning of eggshells.


Contact: Anne Craig
Queen's University

Page: 1

Related biology news :

1. Ice sheet collapse and sea-level rise at the Boelling warming 14,600 years ago
2. Oceans acidifying faster today than in past 300 million years
3. Geological cycle causes biodiversity booms and busts every 60 million years, research suggests
4. Dog skull dates back 33,000 years
5. 2-timing and hybrids: RUB researchers look back on 100 million years of evolution
6. Diet counts: Iron intake in teen years can impact brain in later life
7. Extinct for 150 years, an iconic Galpagos giant tortoise species lives
8. Harp seals on thin ice after 32 years of warming
9. Over 65 million years North American mammal evolution has tracked with climate change
10. An ecosystem being transformed - Yellowstone 15 years after the return of wolves
11. IBM Reveals Five Innovations That Will Change Our Lives Within Five Years
Post Your Comments:
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC , ... that the United States Patent and Trademark Office (USPTO) ... covers the linking of an iris image with a ... and represents the company,s 45 th issued patent. ... is very timely given the multi-modal biometric capabilities that ...
(Date:3/30/2017)... , March 30, 2017 Trends, opportunities ... (physiological and behavioral), by technology (fingerprint, AFIS, iris recognition, ... recognition, and others), by end use industry (government and ... immigration, financial and banking, and others), and by region ... , Asia Pacific , and ...
(Date:3/24/2017)... The Controller General of Immigration from Maldives Mr. Mohamed Anwar ... the prestigious international IAIR Award for the most innovative high security ePassport ... ... Maldives Immigration Controller General, Mr. ... on the right) have received the IAIR award for the "Most innovative ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... Personal eye wash is a basic first aid supply for any ... So which eye do you rinse first if a dangerous substance enters both eyes? It’s ... Wash with its unique dual eye piece. , “Whether its dirt and debris, or ...
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , Oct. 11, ... Research, London (ICR) and University of ... SkylineDx,s prognostic tool to risk-stratify patients with multiple myeloma (MM), ... nine . The University of Leeds ... funded by Myeloma UK, and ICR will perform the testing ...
(Date:10/10/2017)... , ... October 10, 2017 , ... San Diego-based team ... its corporate rebranding initiative announced today. The bold new look is part of ... the company moves into a significant growth period. , It will also expand its ...
(Date:10/10/2017)... , Oct. 10, 2017 International research firm Parks ... Strategy, will speak at the TMA 2017 Annual Meeting , October ... trends in the residential home security market and how smart safety and ... Parks ... "The residential ...
Breaking Biology Technology: