A5079301600- Marine animal studies overview
- Marine and fisheries research
- Arctic and Antarctic ice dynamics
- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Underwater Acoustics Research
- Fish Ecology and Management Studies
- Census and Population Estimation
- Food Industry and Aquatic Biology
- Scientific Research and Discoveries
- Advanced Mathematical Theories and Applications
- Economic and Environmental Valuation
- Forensic and Genetic Research
- Physiological and biochemical adaptations
- Statistical Methods and Bayesian Inference
- Cephalopods and Marine Biology
- Species Distribution and Climate Change
- Coastal and Marine Management
- Marine and coastal plant biology
- Remote Sensing and LiDAR Applications
- Indigenous Studies and Ecology
- Rangeland and Wildlife Management
- Adipose Tissue and Metabolism
- Muscle Physiology and Disorders
- Soil and Water Nutrient Dynamics
University of St Andrews
2002-2023
Grønlands Naturinstitut
2023
Technion – Israel Institute of Technology
1997
Summary Our understanding of a biological population can be greatly enhanced by modelling their distribution in space and as function environmental covariates. Such models used to investigate the relationships between covariates well reliably estimate abundances create maps animal/plant distribution. Density surface consist spatial model abundance which has been corrected for uncertain detection via distance sampling methods. We review recent developments field consider likely directions...
Summary 1. Aerial seabird surveys are often conducted so that changes in abundance may be monitored. For example, large‐scale offshore wind farms proposed for UK waters, and currently being to quantify numbers distribution ahead of construction. 2. Technological advances mean strip transect now conducted, using digital methods. We address survey design data analysis issues such surveys, contrasting them with visual aerial line surveys. 3. also explore the relative performances methods...
Aerial line transect surveys of the density humpback whales (Megaptera novaeangliae) conducted off West Greenland eight times between 1984 and 2007 were used to estimate rate increase on summer feeding ground. Only in 1993, 2005 had enough sightings construct independent estimates, whereas 1984–85 1987–89 be merged treated as two surveys. The annual was 9.4% yr–1 (SE = 0.01) 2007. This is higher than estimated at breeding grounds Indies, but same magnitude observed other North Atlantic. A...
Summary Mark–recapture distance sampling ( MRDS ) methods are widely used for density and abundance estimation when the conventional DS assumption of certain detection at zero fails, as they allow to be estimated incorporated into overall probability better estimate abundance. However, incorporating MR data in models raises survey analysis issues not present . Conversely, assumptions As a result, being familiar with either or does on its own put practitioners good position apply...
The influence of freshwater environment on muscle growth in seawater was investigated an inbred population farmed Atlantic salmon (Salmo salar L.). offspring from a minimum 64 families per group were incubated at either ambient temperature (ambient treatment) or heated water (heated treatment). Growth using mixed-effect statistical model with repeated measures, which included terms for treatment effect and random fish effects individual rate (alpha) the instantaneous unit change (gamma)....
Knowing the abundance of a population is crucial component to assess its conservation status and develop effective plans. For most cetaceans, estimation difficult given their cryptic mobile nature, especially when small has transnational distribution. In Baltic Sea, number harbour porpoises (Phocoena phocoena) collapsed since mid-20th century Proper porpoise listed as Critically Endangered by IUCN HELCOM; however, remains unknown. Here, one largest ever passive acoustic monitoring studies...
An aerial line transect survey of fin whales (Balaenoptera physalus) conducted off West Greenland in 2007 was used to estimate the current abundance on summer feeding ground. A total 24 sightings whale groups were collected during 8,632km effort sea states <5. Based conventional distance sampling techniques an 4,359 (95% CI 1,879–10,114) estimated. The as a double platform and mark recapture correct for perception bias which resulted 4,468 1,343–14,871). Both estimates are negatively...
Narwhals (Monodon monoceros L.) occur in the Atlantic sector of Arctic where for centuries they have been subject to subsistence hunting by Inuit Greenland and Canada. Scientific advice on sustainable levels removals from narwhal populations provides basis quotas implemented both The scientific relies heavily extensive aerial surveys that are only feasible way acquire data densities abundance throughout their range. In some areas lack information abundance, combination with high exploitation...
Biologists now use a variety of survey platforms to assess the spatial distribution and abundance marine birds, yet few attempts have been made integrate data from multiple improve model accuracy or precision. We used density surface models (DSMs) incorporate two predict diving bird, Common Loon (Gavia immer). conducted strip transect surveys multiengine, fixed-wing aircraft line 28 m ship during winter 2009–2010 in 3,800 km2 study area off coast Rhode Island, USA. accounted for imperfect...
Generalized additive models (GAMs) with spatially referenced covariates were fitted to data collected during the 1995 and 2001 Icelandic (shipboard aerial) Faroese only) components of North Atlantic Sightings Surveys (NASS-95 NASS-2001). The shipboard surveys extended from east coast Greenland, around Iceland, down an area along west ofIreland (in 1995) north United Kingdom 2001). In contrast, aerial limited coastal waters only. aim analysis was predict density, hence abundance, humpback...
In this paper the occurrence, distribution and abundance of cetaceans in offshore waters Onslow Bay, North Carolina, USA is described. Between June 2007 2010 monthly aerial shipboard line-transect surveys were conducted along ten 74km transects placed perpendicular to shelf break. total 42,676km trackline (218 sightings) 5,209km vessel (100 observed. Seven species observed, but fauna was dominated strongly by common bottlenose Atlantic spotted dolphins. Both present year-round study area....
The International Whaling Commission’s (IWC) Database‐Estimation and Software System (DESS) was designed to standardise IWC line‐transect survey data storage streamline abundance estimation, including estimation by small management area inform decision making. Not only DESS accommodate all Decade of Cetacean Research (IDCR) Southern Ocean Whale Ecosystem (SOWER) surveys, but also national such as the Japanese surveys in Antarctic North Pacific, multi‐national conducted Atlantic. standard...