Featured Research

from universities, journals, and other organizations

Plastic pollution: Another threat for seabirds

May 13, 2014
Universidad de Barcelona
Plastic ingestions affects around 94% of Cory’s shearwaters on the Catalan coast, according to new research. In the case of Yelkouan shearwaters and Balearic shearwaters, scientists show that 70% of studied birds were affected by plastic ingestion.

Plastic pollution is a threat for seabirds all over the world. On the photo, plastic fragments found in albatross in the Hawaiian Islands.
Credit: Jacob González Solís, UB-IRBio

According to a study published on Marine Pollution Bulletin plastic ingestions affects around 94% of Cory's shearwaters on the Catalan coast. Jacob González Solís, from the Department of Animal Biology and the Biodiversity Research Institute (IRBio) of the University of Barcelona (UB), heads the research group that carried out the study. In the case of Yelkouan shearwaters and Balearic shearwaters, conclusions state that 70% of studied birds were affected by plastic ingestion.

Related Articles

The paper is also authored by Marina Codina García, Teresa Militão and Javier Moreno, researchers at IRBio.

Plastic pollution is known to be a threat for marine ecosystems around the world, but it has not been much studied yet. Jacob González Solís explains that "this is the first assessment of plastic ingestion in Mediterranean seabirds. The Mediterranean Sea has been recognized as a singularly sensitive ecosystem because its coast is very industrialized, shipping activity is intense and it contains high density floating plastic areas."

Endangered Mediterranean seabirds

The scientific study is based on the analysis of 171 birds accidentally caught by longliners in the Catalan coast from 2003 to 2010. The UB research group studied plastic ingestion in nine particularly endangered seabird species: Cory's shearwater (Calonectris diomedea), Yelkouan shearwater (Puffinus yelkouan), Balearic shearwater (Puffinus mauretanicus), gannet (Morus bassanus); Audouin's gull (Ichthyaetus audouinii), Mediterranean gull (Ichthyaetus melanocephalus), yellow-legged gull (Larus michahellis), black-legged kittiwake (Rissa tridactyla) and great skua (Catharacta skua).

From civilization to seabirds' stomach

Floating plastic debris can produce entanglement, ulcers, infections and death to marine animals. They usually ingest them by mistake because plastic fragments resemble their natural food items (direct ingestion), but in other cases plastic comes from eating prey with plastic in the stomach (indirect ingestion). Ingested fragments are filaments, plastic spheres, laminar plastic and industrial pellets.

Results showed that 66% of seabirds had at least one piece of plastic in their stomachs. Cory's shearwaters were worst affected, with 94% of these birds containing plastic fragments (15 on average). In the case Balearic shearwaters and Yelkouan shearwaters, 70% contained plastic fragments.

"Results are alarming," emphasizes Gónzalez Solís. "All three of the worst affected are of conservation concern, particularly the Balearic shearwater, which is listed as critically endangered by the International Union for Conservation of Nature (IUCN). It is a Balearic endemic species; there are only around 3,000 breeding pairs in the world. We do not know its impact but it is necessary to study if it affects populations in a negative way."

Chicks, the most vulnerable

Seabird chicks are the most vulnerable to plastic ingestion as they cannot regurgitate as adults do. The lower occurrence of plastics in gulls probably results from their greater ability to regurgitate any hard remain. The study proves that plastic trash -- most of it from recreational activities -- enters oceans' food chain and may become a new threat for seabirds and marine ecosystems. Seabirds are among the most affected animals by plastic contamination, so they have been suggested as good as bioindicator species of the trends in plastic contamination at sea.

Sea isn't a rubbish bin

Accidental plastic ingestion is a global problem that affects as different species as the Laysan Albatros (Phoebastria immutabilis) in the Hawaiian Islands and the Northern Fulmar (Fulmarus glacialis rogdgersii).

"Plastic floats and is difficult to degrade," points out González Solís. "Eventually, all pollutants which are not destroyed on land arrive to the sea. The sea is not a rubbish bin. The control over plastic production and transportation at industrial level has probably improved, but there is an urgent need to develop stricter controls on waste dumping and prohibit ships' discharge into the sea."

González Solís is co-author of a study -- recently published on the journal PLOS ONE -- about the distribution of flavivirus -- viruses responsible for several infectious diseases that affect humans and other species -- among Western Mediterranean seabird populations. The study shows that yellow-legged gulls (Larus michahellis), widely distributed along the Mediterranean coast, may be potential reservoirs for these pathogens. Therefore, it is necessary to promote health surveillance on these seabird populations.

Story Source:

The above story is based on materials provided by Universidad de Barcelona. Note: Materials may be edited for content and length.

Journal Reference:

  1. Marina Codina-García, Teresa Militão, Javier Moreno, Jacob González-Solís. Plastic debris in Mediterranean seabirds. Marine Pollution Bulletin, 2013; 77 (1-2): 220 DOI: 10.1016/j.marpolbul.2013.10.002

Cite This Page:

Universidad de Barcelona. "Plastic pollution: Another threat for seabirds." ScienceDaily. ScienceDaily, 13 May 2014. <www.sciencedaily.com/releases/2014/05/140513091703.htm>.
Universidad de Barcelona. (2014, May 13). Plastic pollution: Another threat for seabirds. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2014/05/140513091703.htm
Universidad de Barcelona. "Plastic pollution: Another threat for seabirds." ScienceDaily. www.sciencedaily.com/releases/2014/05/140513091703.htm (accessed October 25, 2014).

Share This

More Earth & Climate News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations

Featured Videos

from AP, Reuters, AFP, and other news services

EU Gets Climate Deal, UK PM Gets Knock

EU Gets Climate Deal, UK PM Gets Knock

Reuters - Business Video Online (Oct. 24, 2014) — EU leaders achieve a show of unity by striking a compromise deal on carbon emissions. But David Cameron's bid to push back EU budget contributions gets a slap in the face as the European Commission demands an extra 2bn euros. David Pollard reports. Video provided by Reuters
Powered by NewsLook.com
Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) — Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Raw: Tornado Rips Roofs in Washington State

Raw: Tornado Rips Roofs in Washington State

AP (Oct. 24, 2014) — A rare tornado ripped roofs off buildings, uprooted trees and shattered windows Thursday afternoon in the southwest Washington city of Longview, but there were no reports of injuries. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Fast-Moving Lava Headed For Town On Hawaii's Big Island

Fast-Moving Lava Headed For Town On Hawaii's Big Island

Newsy (Oct. 24, 2014) — Lava from the Kilauea volcano on Hawaii's Big Island has accelerated as it travels toward a town called Pahoa. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.


Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News


Free Subscriptions

Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile

Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?

Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins