aerial surveys
Estimating cetacean density and abundance in the Central and Western Mediterranean Sea through aerial surveys : implications for management
... multispecies aerial surveys was carried out in the seas around Italy to gather important baseline information on cetacean occurrence, distribution and ...that surveys are undertaken regularly and at ...
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RADIOTELEMETRY LOCATIONS, HOME RANGES, AND AERIAL SURVEYS IN MINNESOTA
... ABStrACt: Although home ranges of radio-collared moose are typically used to establish habitat requirements and range size of moose, they can be useful in the implementation of aerial surveys. A survey area ...
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Cameras and settings for aerial surveys in the geosciences:Optimising image data
... We have provided a brief overview of the physical principles of digital image capture and how these are controlled through aperture, shutter speed and ISO to produce a “well exposed” image. The choice of camera body and ...
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Aerial Surveys Do Not Reliably Survey Boreal-nesting Shorebirds
... upon aerial surveys ...Those surveys are undertaken regularly by the US Fish and Wildlife Service and Canadian Wildlife Service and which yield indices of abundance and information on habitat use ...
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POTVIN DOUBLE-COUNT AERIAL SURVEYS IN NEW BRUNSWICK: ARE RESULTS RELIABLE FOR MOOSE?
... conducted aerial surveys following snowfall that completely covered the ...counted, surveys were flown as long as snow occurred, but this was altered as we experienced behavioral change of both deer ...
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The effect of a multi target protocol on cetacean detection and abundance estimation in aerial surveys
... The aircraft flew at a constant speed of 90 knots (167 km h −1 ) and height of 600 feet (183 m). Observers recorded all environmental conditions impacting the detection of animals: sea conditions measured on the Beaufort ...
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Spatial and Temporal Variation in the Singing Rates of Two Forest Songbirds, the Ovenbird and the Black-throated Blue Warbler: Implications for Aural Counts of Songbirds.
... Display Behavior in Ovenbirds ( Seiurus aurocapillus ) II. Song variation and singing behavior. Correcting for visibility bias in strip transect aerial surveys of aquatic fauna. Nest-m[r] ...
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ESTIMATING MOOSE ABUNDANCE IN LINEAR SUBARCTIC HABITATS IN LOW SNOW CONDITIONS WITH DISTANCE SAMPLING AND A KERNEL ESTIMATOR
... ABSTRACT: Moose (Alces alces) are colonizing previously unoccupied habitat along the tributaries of the lower Kuskokwim River within the Yukon Delta National Wildlife Refuge (YDNWR) of wes- tern Alaska. We delineated a ...
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Minke whale abundance estimation from the NASS 1987 and 2001 aerial cue–counting surveys taking appropriate account of distance estimation errors
... shelf aerial surveys carried out as part of the 1987 and 2001 North Atlantic Sightings Sur- veys ...2001 aerial cue–counting surveys taking appropriate account of distance estimation ...
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Loggerhead turtle Caretta caretta density and abundance in Chesapeake Bay and the temperate ocean waters of the southern portion of the Mid Atlantic Bight
... conducting aerial surveys for manatees in ...the aerial surveys (Buckland et ...seasonal aerial sur- veys took place over a 5 to 10 d period at approxi- mately the same time each ...
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Distribution, abundance, and feeding ecology of baleen whales in Icelandic waters: have recent environmental changes had an effect?
... Sightings Surveys (NASS and TNASS) con- stitute the largest series of cetacean surveys conducted to date in both spatial and temporal extent (Pike, ...national surveys have covered large parts of the ...
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Differential effects of the severe winter of 1995/96 on the intertidal bivalves Mytilus edulis, Cerastoderma edule and Mya arenaria in the Northern Wadden Sea
... Nehls and Thiel (1993) reported negative effects of heavy storms on the persistence of intertidal mussel beds in the North Frisian Wadden Sea. They mapped mussel beds from aerial surveys in 1989 and ...
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Interactions between dugongs and seagrasses in a subtropical environment
... Table 5.4. Evidence of feeding site fidelity. Examples of dugong herds feeding in the same location for extended periods. All sightings were made around high tide, when there was sufficient water on the banks 1.5 m) for ...
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Echolocation detections and digital video surveys provide reliable estimates of the relative density of harbour porpoises
... Digital aerial surveys were funded by Moray Offshore Renewables Ltd and additional funding for analysis of the combined data sets was provided by Marine ...Hi-Def Aerial Surveying Ltd and Rave- nair ...
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The effect of sea ice loss on beluga whales (Delphinapterus leucas) in West Greenland
... from aerial surveys of the beluga wintering grounds in West Greenland conducted in March and April 2006, and in April 2008, together with an examination of changes in beluga distribution with respect to ...
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COMPARING STRATIFICATION SCHEMES FOR AERIAL MOOSE SURVEYS
... ABSTRACT: Stratification is generally used to improve the precision of aerial surveys. In Minnesota, moose (Alces alces) survey strata have been constructed using expert opinion informed by moose density ...
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Suspected Long-Term Population Increases in Common Eiders, Somateria mollissima , on the Mid-Labrador Coast, 1980, 1994, and 2006
... 2006, aerial surveys were flown on the mid-Labrador coast (Figure 1) using a twin engine Normandy Islander; flight altitudes ranged between 200 and 300 m Above Sea Level and air speeds ranged between 150 ...
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Comparison of chemical profiles between the root and aerial parts from three Bupleurum species based on a UHPLC QTOF MS metabolomics approach
... and aerial parts of Bupleurum species are sold separately for the folk use ...the aerial parts of Bupleurum species are used as a popular topical antiseptic and anti-inflammatory remedy in Spain ...and ...
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Prohibited Zones Coverage Protection Using Aerial Mines
... Using the same concept in the naval or terrestrial mine, we are able to design the aerial mine to deal with various types of planes in the civilian or air forces of the enemy. When deployed, mines may be used as ...
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A high-resolution image time series of the Gorner Glacier – Swiss Alps – derived from repeated unmanned aerial vehicle surveys
... Abstract. Modern drone technology provides an efficient means to monitor the response of alpine glaciers to climate warming. Here we present a new topographic dataset based on images collected during 10 UAV ...
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