Seabird-Wind Farm Interactions During the Breeding Season Vary Within and Between Years: A Case Study of Lesser Black-Backed Gull Larus fuscus in the UK

Journal Article

Title: Seabird-Wind Farm Interactions During the Breeding Season Vary Within and Between Years: A Case Study of Lesser Black-Backed Gull Larus fuscus in the UK
Publication Date:
June 01, 2015
Journal: Biological Conservation
Volume: 186
Pages: 347-358
Publisher: Elsevier
Receptor:

Document Access

Website: External Link

Citation

Thaxter, C.; Ross-Smith, V.; Bouten, W.; Clark, N.; Conway, G.; Rehfisch, M.; Burton, N. (2015). Seabird-Wind Farm Interactions During the Breeding Season Vary Within and Between Years: A Case Study of Lesser Black-Backed Gull Larus fuscus in the UK. Biological Conservation, 186, 347-358.
Abstract: 

The marine environment is increasingly pressured from human activities, such as offshore renewable energy developments. Offshore wind farms may pose direct risks to seabirds at protected breeding sites. However, changes in food availability may influence foraging behaviour and habitat use during the breeding season or between years. Consequently, seabird–wind farm interactions, and risks posed to populations, may vary over longer time scales, but this has seldom been quantified. We used GPS-telemetry to study the movements of 25 lesser black-backed gulls from the Alde–Ore Special Protection Area (SPA), UK between 2010 and 2012, while birds were associated with their breeding colony. Variation in movements away from the colony, offshore, and in operational, consented and proposed Offshore Wind Farm Areas (“OWFAs”) was investigated: (1) between years and (2) across the breeding season, addressing: (3) sex-specific, (4) individual and (5) diurnal/nocturnal differences. The extent of overlaps with OWFAs varied between years, being greatest in 2010 (7/10 birds showing connectivity; area overlap: 6.2 ± 7.1%; time budget overlap: 4.6 ± 6.2%) and least in 2012. Marine habitats close to the colony were used before breeding. Birds spent little time offshore as incubation commenced, but offshore usage again peaked during the early chick-rearing period, corresponding with use of OWFAs. Individuals differed in their seasonal interactions with OWFAs between years, and males used OWFAs significantly more than females later in the breeding season. This study demonstrates the importance of tracking animals over longer periods, without which impact assessments may incorrectly estimate the magnitude of risks posed to protected populations.

Find Tethys on InstagramFind Tethys on FacebookFind Tethys on Twitter
 
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.