Abstract Changes in the physical oceanography of Northwest Atlantic stemming from both natural and anthropogenic climate change impact foraging ecology distribution endangered North right whales. In this study, whale sightings 1990 to 2018 were analyzed examine decadal patterns monthly habitat use 12 high‐use areas. Depth‐integrated abundances late‐stage Calanus finmarchicus hyperboreus also for variations habitats. There significant differences occurrence, seasonal timing, persistence...

Passive Acoustic Monitoring (PAM) is emerging as a solution for monitoring species and environmental change over large spatial temporal scales. However, drawing rigorous conclusions based on acoustic recordings challenging, there no consensus which approaches are best suited characterizing marine environments. Here, we describe the application of multiple machine-learning techniques to analysis two PAM datasets. We combine pre-trained classification models (VGGish, NOAA Google Humpback Whale...

Abstract Understanding habitat requirements for species at risk is crucial effective conservation management, even though the location and extent of vital habitats may be unknown rare or elusive species. In case marine species, determining important often relies on limited occurrence data extrapolation from distribution models (SDMs). SDMs predict by associating records with environmental variables, assuming a functional ecological relationship. This study focuses northern bottlenose whales...

Despite reduced fishing effort in many North Atlantic fisheries following collapse of fish stocks, concerns remain about levels direct mortality harbour porpoise (Phocoena phocoena), primarily through incidental catches gear. Although catch is known to occur several along the coast Newfoundland and Labrador, Canada, there are no reliable quantitative estimates for last decade when commercial have undergone major changes target species. Based on rates derived using different reporting...

In summer, narwhals (Monodon monoceros) migrate from Baffin Bay to northeastern Canada and northwest Greenland, where they are hunted by Inuit for subsistence. To prevent localized depletion, management of is based on summer stocks. The High Arctic Cetacean Survey (HACS), conducted in August 2013, was the first survey estimate abundance all 4 Canadian narwhal stocks, as well putative stocks Jones Sound Smith Sound, same summer. Narwhal estimated using a double-platform aerial survey....

Structure of the microhabitat used by four species rodents in a montane environment was investigated using principal-component analysis trap-site characteristics. Most were associated with fallen logs and brush during June but use shifted to areas more herbaceous growth July–August. This shift concurrent rapid growth. Females each occupied structured than males same species. Differential segregation habitat sex may be function variability resource as whole. Unused does not differ from random...

ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 32:437-458 (2017) - DOI: https://doi.org/10.3354/esr00823 Predicted distribution of whales at risk: identifying priority areas enhance cetacean monitoring in Northwest Atlantic Ocean Catalina Gomez1,2,*, Jack Lawson1, Amy-Lee Kouwenberg1, Hilary Moors-Murphy2, Alejandro Buren1, César Fuentes-Yaco2, Emma Marotte2,...

Northward range shifts are increasingly being identified in mobile animals that responding to climate change. Range consequential animal ecology, ecosystem function, and conservation goals, yet for many species these cannot be characterised without means of synoptically measuring their distribution. The distribution critically endangered North Atlantic right whale ( Eubalaena glacialis; NARW) north 45°N has been largely unknown due a lack systematic monitoring. objectives this study were...

With very limited resources, China has developed perhaps the world's largest network of health care services. The status its peoples risen dramatically during past 40 years. reasons for these achievements are complex and include an ideology equity all citizens, near universal availability adequate food, education, housing, jobs, transport, accessible affordable treatment preventive Despite is facing new problems. These aging population, continued growth population leading to ever increasing...

The hunting of bowhead whales (Balaena mysticetus) is an integral part Inuit culture. An up-to-date abundance estimate the entire Eastern Canada – West Greenland (EC-WG) population necessary to support sustainable management this harvest. High Arctic Cetacean Survey (HACS) was conducted in August 2013, primarily update estimates for known stocks Baffin Bay narwhal (Monodon monoceros). As ranges and largely overlap, survey area expanded cover summer range whales. Bowhead whale estimated using...

Elucidating the evolutionary and ecological characteristics of distinct populations constitutes a cornerstone in classification ecotypes, assessing their specific responses to environmental changes potential impacts from human activities. In this study, two complementary approaches were deployed investigate existence putative harbour porpoise (Phocoena phocoena) ecotype West Greenland. Genetic differentiation 68 porpoises Greenland, neighbouring Canada Iceland studied by ddRADseq analysis,...

This study represents the first comprehensive examination of distribution and abundance killer whales ( Orcinus orca ) in north-west Atlantic. Based on a collation sightings data multi-year photographic catalogue whales, 836 sighting events have been recorded between 1758 2012, with most occurring last ten years. Killer were commonly observed during June–September Newfoundland/Labrador, Canada. Most made close to shore, although many occurred beyond coastal shelf areas water depths excess...

Anthropogenic underwater noise has been identified as a potentially serious stressor for the critically endangered North Atlantic right whale (NARW). The Government of Canada is undertaking steps to better characterize sources most concern and their associated impacts, but there currently an insufficient understanding which are impacting NARW in Canadian habitat. This knowledge gap together with myriad possible methods metrics quantifying presents confounding challenging problem that risks...

Abstract Killer whales ( Orcinus orca ) are distributed widely in all oceans, although they most common coastal waters of temperate and high-latitude regions. The species’ distribution has not been fully described the northwest Atlantic (NWA), where killer move into seasonally ice-free eastern Canadian Arctic (ECA) occur year-round off coast Newfoundland Labrador farther south. We measured stable oxygen carbon isotope ratios dentine phosphate (δ 18 O P structural carbonate SC , δ 13 C whole...

Ecotypes are groups within a species with different ecological adaptations than their conspecifics. Eastern North Pacific (ENP) killer whale ( Orcinus orca ) ecotypes differ in diet, behavior, and morphology, but the same is not known for this eastern Canadian Arctic (ECA) Northwest Atlantic (NWA). Using compound-specific stable isotope analysis (CSIA) of amino acids (AAs), we compared δ 15 N patterns primary trophic source AA pair, glutamic acid/glutamine (Glx) phenylalanine (Phe), dentine...

Part of the western Atlantic population leatherback turtles (Dermochelys coriacea (Vandelli, 1761)) forage in Canadian waters, where high-use areas have been identified using satellite telemetry and opportunistic sightings. Here, we use sightings ocean sunfish (Mola mola (Linnaeus, 1758)) obtained during a systematic large-scale aerial survey, along with turtle sightings, to examine seasonal occurrence distribution eastern Canada. Using environmental correlates, predict spatial development...

Inadequate infrastructure and health care to support aging prisoners is an emerging problem in federal penitentiaries, says the Office of Correctional Investigator Canada. An Investigation Service Canada’s Mortality Review Process recently issued by Howard Sapers

An immature female bowhead whale (Balaena mysticetus) was discovered stranded dead at Witless Bay Point, just south of Mobile Point (47°14' 68.00"N, 52°47' 90.00"W) on the southern shore Avalon Peninsula island Newfoundland (Newfoundland and Labrador, Canada) 15 April 2005. This is second found in seven years. The first, also an female, a fjord northeastern near Rattling Brook (49°40' N, 56°10' W) October 1998. These animals represent only whales known to have been sighted, alive or dead,...

The Geometer is a new handheld USB device that facilitates relatively accurate measurement of the declination to target with instantaneous recording this and other data. offers several advantages over traditional clinometers used in aerial surveys, including easier pinpointing tracking, more consistent angle measurements, integration software data collection packages. In note we provide technical specifications for its associated software, describe survey programme takes full advantage...