منابع مشابه
Land or sea? Foraging area choice during breeding by an omnivorous gull
BACKGROUND Generalist predators may vary their diet and use of habitat according to both internal state (e.g. breeding stage) and external (e.g. weather) factors. Lesser black-backed gulls Larus fuscus (Linnaeus 1758) are dietary generalists, foraging in both terrestrial and marine habitats during breeding. We investigate what affects the gulls' propensity to forage at sea or on land. We assess...
متن کاملNegative Interspecies Interactions in a Glaucous-winged Gull Colony on Protection Island, Washington
Protection Island, Washington, is one of the most important nesting sites for Glaucous-winged Gulls (Larus glaucescens) in the Puget Sound area. Changes in the numbers and distribution of nests in a Glaucous-winged Gull colony on Violet Point, Protection Island, were tracked from 1980 to 2010. The colony grew steadily until the early 1990s, then declined to about half its former level. The main...
متن کاملAccuracy assessment of land cover/land use classifiers in dry and humid areas of Iran.
Land cover/land use (LCLU) maps are essential inputs for environmental analysis. Remote sensing provides an opportunity to construct LCLU maps of large geographic areas in a timely fashion. Knowing the most accurate classification method to produce LCLU maps based on site characteristics is necessary for the environment managers. The aim of this research is to examine the performance of various...
متن کاملGlobal land moisture trends: drier in dry and wetter in wet over land
The "dry gets drier, wet gets wetter" (DGDWGW) paradigm is widely accepted in global moisture change. However, Greve et al. have declared that this paradigm has been overestimated. This controversy leaves a large gap in the understanding of the evolution of water-related processes. Here, we examine the global moisture trends using satellite soil moisture for the past 35 years (1979-2013). Our r...
متن کاملThermal Stress and Predation: Influences on the Structure of a Gull Colony and Possibly on Breeding Distributions
-The arrangement of nesting territories of Larus occidentalis livens on beaches is commonly linear, and most territories are adjacent to water. This arrangement differs from clustered colonies typical of most gulls. Two hypotheses are advanced to explain this unusual nest arrangement: it may provide access to the intertidal zone for foraging or access to water for thermoregulation. Foraging act...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1961
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay2215