To see accurate pricing, please choose your delivery country.
 
 
United States
£ GBP
All Shops

British Wildlife

8 issues per year 84 pages per issue Subscription only

British Wildlife is the leading natural history magazine in the UK, providing essential reading for both enthusiast and professional naturalists and wildlife conservationists. Published eight times a year, British Wildlife bridges the gap between popular writing and scientific literature through a combination of long-form articles, regular columns and reports, book reviews and letters.

Subscriptions from £33 per year

Conservation Land Management

4 issues per year 44 pages per issue Subscription only

Conservation Land Management (CLM) is a quarterly magazine that is widely regarded as essential reading for all who are involved in land management for nature conservation, across the British Isles. CLM includes long-form articles, events listings, publication reviews, new product information and updates, reports of conferences and letters.

Subscriptions from £26 per year
Academic & Professional Books  Ornithology  Non-Passerines  Seabirds, Shorebirds & Wildfowl

At-Sea Distribution and Abundance of Seabirds off Southern California A 20-Year Comparison

Series: Studies in Avian Biology Volume: 33
By: John W Mason(Author), Gerard J McChesney(Author), William R McIver(Author), Harry R Carter(Author), John Y Takekawa(Author), Richard T Golightly(Author), Joshua T Ackerman(Author), Dennis L Orthmeyer(Author), William M Perry(Author), Julie L Yee(Author), Mark O Pierson(Author), Michael D McCrary(Author)
101 pages, 45 b/w illustrations, tables
At-Sea Distribution and Abundance of Seabirds off Southern California
Click to have a closer look
  • At-Sea Distribution and Abundance of Seabirds off Southern California ISBN: 9780943610726 Paperback Mar 2007 Not in stock: Usually dispatched within 1-2 weeks
    £44.99
    #171531
Price: £44.99
About this book Customer reviews Related titles

About this book

Language: English with bilingual abstract in English and Spanish

The authors conducted aerial at-sea and coastal surveys to examine the distribution and abundance of seabirds off southern California, from Cambria, California, to the Mexican border. From May 1999-January 2002, they flew 102 days, covered >54,640 km of transect lines, and conducted nine complete surveys of southern California in January, May, and September. They identified 54 species comprising 12 families and counted >135,000 individuals. Seabird densities were greater along island and main-land coastlines than at sea and were usually greatest in January surveys. Densities were greatest at sea near the northern Channel Islands in January and north of Point Conception in May, and lowest in the southwestern portion of the Southern California Bight in all survey months. On coastal transects, sea-bird densities were greatest along central and southern portions of the mainland coastline from Point Arguello to Mexico. They estimated that 981,000 ± 144,000 (average ± SE) seabirds occurred in the study area in January, 862,000 ± 95,000 in May, and 762,000 ± 72,000 in September. Detailed results indicate that seabird abundance has declined off the southern California coast in the past two decades, and these declines may be warning signs of environmental degradation in the region or effects of larger forces such as climate change.

Customer Reviews

Series: Studies in Avian Biology Volume: 33
By: John W Mason(Author), Gerard J McChesney(Author), William R McIver(Author), Harry R Carter(Author), John Y Takekawa(Author), Richard T Golightly(Author), Joshua T Ackerman(Author), Dennis L Orthmeyer(Author), William M Perry(Author), Julie L Yee(Author), Mark O Pierson(Author), Michael D McCrary(Author)
101 pages, 45 b/w illustrations, tables
Current promotions
New and Forthcoming BooksNHBS Moth TrapBritish Wildlife MagazineBuyers Guides