Download or read book A Breeding Study of the California Least Tern written by Barbara W. Massey and published by . This book was released on 1971 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Field Study written by Barbara W. Massey and published by . This book was released on 1988 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Field Study written by Barbara W. Massey and published by . This book was released on 1989 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Breeding Survey Season written by and published by . This book was released on 1996 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Breeding Survey written by and published by . This book was released on 2000 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Breeding Biology of the California Least Tern at Camp Pendleton Season of 1983 written by Dennis Minsky and published by . This book was released on 1983 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Literature of the California Least Tern written by Sanford R. Wilbur and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper summarizes information contained in about 100 references to the California least tern and related subspecies. Additional records of past distribution derived from several museum collections are also included.

Download or read book California Least Tern Census and Nesting Survey 1978 written by and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Fledging Study Venice California 1989 written by Barbara W. Massey and published by . This book was released on 1989 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Breeding Biology of the California Least Tern written by Barbara W. Massey and published by . This book was released on 1972 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Breeding Survey written by Carolee Caffrey and published by . This book was released on 1998 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Breeding Survey written by Scott M. Johnston and published by . This book was released on 1992 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Diet and Local Oceanic Conditions on California Least Tern Reproduction written by and published by . This book was released on 2016 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: For seabirds in particular, linking varying resource abundance and distribution to reproduction can be challenging due to the difficulty of observing foraging directly as well as the accurately sampling highly mobile prey in a dynamic oceanic habitat. This lack of information on the relationship is particularly problematic Endangered Species Act listed species. Here we focus on the endangered California least tern (Sterna antillarum browni), a management reliant species, which has had variable and often low reproductive success in recent years. Using stable isotope analysis on salvaged eggs and long-term breeding datasets for colonies in San Diego County, CA, we found significant annual variation in resource availability. In years characterized by low measurements on 15N California least terns initiated nesting later in the season and generally had higher fledgling rates. In years where higher trophic level prey was abundant in the pre-breeding diet we found that nesting was initiated earlier in the season and fledgling rates were lower. In order to indentify underlying influences of these observed shifts in least tern diet and associated changes in reproductive patterns, we used remotely sensed oceanic data for temperature, chlorophyll concentration, and upwelling to characterize environmental conditions. We found a significant negative relationship between the diet signal of foraging females and upwelling in the Southern California Bight during the time period of egg development. Furthermore, reproductive output was driven by different factors dependent on stage of breeding. Greater proportions of females initiated nests within the first two weeks of the breeding season when the diet was dominated by lower trophic level prey while local sea surface temperature was a more important factor on other measures of reproduction such as clutch size and hatching and foraging success rates. Our research provides critical context for the variable California least tern reproductive output observed on nesting colonies in the past decade. The findings of this study highlight the need for a richer understanding of the interactions between local ocean conditions, diet and California least tern breeding output in light of the need to manage and recover this species.

Download or read book California Least Tern Breeding Survey written by Carolee Caffrey and published by . This book was released on 1997 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Breeding Survey written by Carol Anderson and published by . This book was released on 1981* with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Breeding Survey written by Carolee Caffrey and published by . This book was released on 1994 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Least Tern Breeding Survey written by Bryan Steven Obst and published by . This book was released on 1992 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: