Navigation Links
Rats on islands disrupt ecosystems from land to sea, researchers find
Date:2/25/2008

SANTA CRUZ, CA--Seabird colonies on islands are highly vulnerable to introduced rats, which find the ground-nesting birds to be easy prey. But the ecological impacts of rats on islands extend far beyond seabird nesting colonies, according to a new study by researchers at the University of California, Santa Cruz.

The study, which will be published the week of February 25, 2008, in the Proceedings of the National Academy of Sciences, has already helped make the case for the first major rat eradication effort in the Aleutian Islands. Planned to begin this summer, the project will target rats on the appropriately named Rat Island.

The UCSC researchers found that the presence of rats on islands in the Aleutian Archipelago dramatically alters the intertidal zone, reducing the amount of seaweed and increasing the numbers of snails, barnacles, and other invertebrates. These changes result from the decimation of seabird populations by the rats, according to graduate student Carolyn Kurle, who led the study.

"When you're on an island with rats, there are so few birds it's silent, in contrast to the cacophony on the islands without rats," Kurle said.

Some of the affected birds--sea gulls and oystercatchers, in particular--are major predators of invertebrates in the intertidal zone. In their absence, the snails, limpets, and other grazers increase in abundance, eat more algae, and clear more space for other invertebrates to settle and grow. The result is a shoreline practically stripped bare of the usual cover of fleshy algae (i.e., seaweed).

"Where there are no rats, we found plenty of birds, fewer invertebrates, and a lot more algal cover," Kurle said.

Kurle's coauthors are associate professor Donald Croll and assistant adjunct professor Bernie Tershy of UCSC's Department of Ecology and Evolutionary Biology. Croll and Tershy are also the cofounders of Island Conservation, a nonprofit organization dedicated to the
'/>"/>

Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. First wind turbines on Galapagos Islands will halve diesel imports, reduce risk of future oil spills
2. Disrupting common parasites ability to talk to each other reduces infection
3. Climate gas could disrupt food chain
4. City birds better than rural species in coping with human disruption
5. Adapting local ecosystems can soften impact of global climate change
6. Map is first to track global human influences on ocean ecosystems
7. First map of threats to marine ecosystems shows all the worlds oceans are affected
8. Resilience concepts poised to aid management of coastal marine ecosystems
9. At the root of nutrient limitation, ecosystems are not as different as they seem
10. Genetically engineered corn may harm stream ecosystems
11. Study shows genetically engineered corn could affect aquatic ecosystems
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/19/2015)... May 18, 2015 Fingerprint Cards (FPC) ... FPC1025, FPC1145, FPC1155 and FPC1035 from one if its module ... and including Q3 2015 and the sensors will be used ... order values for 2015 hereby amount to 740 MSEK to ... of 140 MSEK and a number of smaller orders not ...
(Date:5/14/2015)... , May 14, 2015 Research and Markets ... the "Fingerprint Sensors Market in Smart Mobile Devices ... report believes that 2014 was a watershed year for ... introduction of ,Apple Pay,. Apple gave fingerprint sensors a ... payment service. Fingerprint sensors are a must-have feature in ...
(Date:5/11/2015)... 11, 2015 Curemark LLC, a privately held ... a new Phase III double blind, randomized, placebo-controlled clinical ... CM-AT, on all children ages 3-8 with Autism. Previously, ... III double blinded clinical trial for CM-AT in children ... the digestive enzyme chymotrypsin. This new trial will help ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Global Smart Mobile Devices Fingerprint Sensors Market 2015-2019: Key Vendors are Authentec, Validity Sensors, Fingerprint Cards, Next Biometrics Group. IDEX, and Qualcomm 2Curemark, LLC, Launches New Phase III Trial in Expanded Population of Children with Autism 2
... of Basic Medical Sciences, Beijing University of Chinese ... advanced glycation end product formation, reduce their levels ... memory capabilities in ovariectomized rats. The Radix Achyranthis ... accumulation is associated with an antioxidative effect. These ...
... water systems is the focus of a wide-ranging collection ... the Elsevier journal Environmental Development . A ... the UN University,s Canadian-based Institute for Water, Environment and ... articles available with open public access until the end ...
... data obtained during six years of regular aerial surveys and ... have strengthened evidence pointing to the central Gulf of Maine ... to a study recently published online in the journal ... ( Eubalaena glacialis ) is one of the most endangered ...
Cached Biology News:Managing waters shared across national boundaries: Treasury of papers helps capture 20 years of lessons 2Managing waters shared across national boundaries: Treasury of papers helps capture 20 years of lessons 3Managing waters shared across national boundaries: Treasury of papers helps capture 20 years of lessons 4Managing waters shared across national boundaries: Treasury of papers helps capture 20 years of lessons 5Are North Atlantic right whales mating in the Gulf of Maine? 2Are North Atlantic right whales mating in the Gulf of Maine? 3
(Date:5/28/2015)... , May 28, 2015 ... ) has announced the addition of ... - Technologies, Markets and Companies"  to ... ,This report describes and evaluates animal ... medicine and pharmaceuticals as well as ...
(Date:5/28/2015)... Research and Markets( http://www.researchandmarkets.com/research/l9dqwt/animal_genetics ) has announced the addition ... Testing services - Global Forecast to 2020" report ... market is estimated to be worth around $2.5 billion ... during the forecast period of 2014 to 2020 ... protein consumption, increasing adoption of advanced genetic technologies for ...
(Date:5/28/2015)... Research and Markets( http://www.researchandmarkets.com/research/3nl6s2/neuroprotection ) has ... "Neuroprotection - Drugs, Markets and Companies" ... the role of neuroprotection in acute disorders such ... as well as in chronic diseases such as ... of damage to neural tissues are similar in ...
(Date:5/28/2015)... 2015 Celsion Corporation (the "Company") (NASDAQ: ... from two institutional healthcare investors to purchase an aggregate ... in an at-the-market registered direct offering and a concurrent ... The Company entered into a definitive purchase agreement ... to sell an aggregate of 3,000,000 shares of its ...
Breaking Biology Technology:Global Animal Biotechnology Report 2015 - Technologies, Markets and Companies Analysis to 2024 2Global Animal Biotechnology Report 2015 - Technologies, Markets and Companies Analysis to 2024 3Global Animal Genetics (Canine, Equine, Poultry, Porcine, Bovine, and Genetic Material) Market 2015 - Global Forecast to 2020 2Global Neuroprotection Market Report 2015-2024 - Drugs, Markets and Companies 2Global Neuroprotection Market Report 2015-2024 - Drugs, Markets and Companies 3Celsion Corporation Announces $8 Million At-The-Market Registered Direct Offering 2Celsion Corporation Announces $8 Million At-The-Market Registered Direct Offering 3
... , EMERYVILLE, Calif., June 4 Ratcliff promoted Jorge Burbano ... Y. Keung to associate this month. The award-winning firm ... array of architectural, interior design and planning services to healthcare, ... , Jorge Burbano, LEED(R) AP, has more than 20 ...
... BRAINTREE, Mass., June 4 Haemonetics Corporation (NYSE: ... the District of Massachusetts has made a ruling in the ... 2009, a jury issued a verdict in favor of Haemonetics, ... U.S. Haemonetics patent. The jury awarded Haemonetics $15.7 million ...
... 11th, 10:00 a.m. EDT , , WALTHAM, Mass., June ... that the Company President and Chief Executive Officer, Walter C. Herlihy, ... 11th, 2009 at 10:00 a.m. EDT, to report fourth quarter and ... of the Company. , , This call is being webcast ...
Cached Biology Technology:Ratcliff Promotes Jorge Burbano to Senior Associate; Tess Kavanagh and Tony Keung to Associate 2Haemonetics Receives Favorable Ruling in Patent Lawsuit against Competitive Technology 2Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2009 Results 2Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2009 Results 3
... Immunoperoxidase Secondary Detection System uses biotin-avidin-HRP complexed ... in the Primary Antibody. The primary antibody ... specimen. Any excess antibody is removed by ... to biotin) is added and will react ...
... double stranded RNA (dsRNA) has been shown ... group of organisms as well as insect ... the inhibition of protein expression by utilizing ... RNA (mRNA). Attempts to induce RNA interference ...
... The TSQ Quantum Ultra defines a new ... environmental analysis. It features the revolutionary ... a titanium skimmer with superior skimming and ... Its redesigned ion transfer tube lens ...
... tetramethylrhodamine-conjugated jetSI-ENDO (excitation at 555 ... the powerful siRNA transfection reagent. ... determine the transfection efficiency or ... trafficking of siRNAs. More than ...
Biology Products: