Results 71 to 80 of about 8,493 (212)
Long-term feeding ecology and habitat use in harbour porpoises from Scandinavian waters inferred from trace elements and stable isotopes [PDF]
peer reviewedBACKGROUND: We investigated the feeding ecology and habitat use of 32 harbour porpoises by-caught in 4 localities along the Scandinavian coast from the North Sea to the Barents Sea using time-integrative markers: stable isotopes (delta13C ...
Fontaine, Michael +6 more
core +1 more source
ABSTRACT Chronic anthropogenic activity is an ongoing threat to the marine environment and presents unique challenges in shallow, coastal habitats where harbor porpoises reside. Harbor porpoises have high metabolic needs and are highly susceptible to negative environmental factors; however, no long‐term studies have been conducted on wild populations ...
Rachel L. Lennon +5 more
wiley +1 more source
Abundance of harbor porpoise (Phocoena phocoena) in three Alaskan regions, corrected for observer errors due to perception bias and species misidentification, and corrected for animals submerged from view [PDF]
Estimating the abundance of cetaceans from aerial survey data requires careful attention to survey design and analysis. Once an aerial observer perceives a marine mammal or group of marine mammals, he or she has only a few seconds to identify and ...
Hobbs, Roderick C., Waite, Janice M.
core
Åtgärdsprogram för tumlare : Phocoena phocoena (Linnaeus, 1758)
The harbour porpoise (Phocoena phocoena) is one of the smallest toothed whale species. It is found in cold and temperate waters of the Northern Hemisphere. Within Swedish waters there are three distinct populations of harbour porpoises: the North Sea population, the Belt Sea population, and Baltic Proper population.
openaire +2 more sources
Catalog of Osteological Collections of Aquatic Mammals from Mexico [PDF]
This paper compiles available information on osteological and other anatomical specimens of at least 51 species of aquatic mammals (34 extant, one recently extinct and 16 fossil) collected in Mexico between 1868 and 1990 and housed in 29 scientific ...
Vidal, Omar
core
Marine mammals are vulnerable to a variety of anthropogenic threats, yet a global systematic map of the literature for 19 species found both spatial and temporal disparity in research effort between threats and between species. There are knowledge gaps for species and threats, with effort unequal across many species' ranges.
Emily L. Hague +9 more
wiley +1 more source
Beyond Parasitism: Hepatic Lesions in Stranded Harbor Porpoises (Phocoena phocoena) Without Trematode (Campula oblonga) Infections [PDF]
The liver can be an indicator of the health of an individual or of a group, which can be especially important to identify agents that can cause disease in multiple species.
Harkema, L. (Liesbeth) +3 more
core +3 more sources
The Indo‐Pacific humpback dolphin population in Xiamen Bay was divided into two geographically separated but socially associated communities inhabiting the West and East sub‐regions. Based on 3 years of boat‐based surveys, this study established baseline acoustic characteristics and investigated whether vocal patterns varied with habitat conditions ...
Xuming Peng +11 more
wiley +1 more source
Bycatch is a significant cause of population declines of marine megafauna globally. While numerous bycatch mitigation strategies exist, acoustic alarms, or pingers, are the most widely adopted strategy for small cetaceans.
Lucy C. M. Omeyer +8 more
doaj +1 more source
Distribution and density of harbour popoises in Dutch North Sea waters [PDF]
Aerial surveys were conducted to investigate harbour porpoise density and distribution in Dutch waters. Surveys were conducted following standard line transect distance sampling methodology on tracklines providing a representative coverage of the study ...
Scheidat, M., Verdaat, J.P.
core +1 more source

