Results 21 to 30 of about 47,130 (248)

Who Are the Marine Mammals?

open access: yes, 2023
AbstractMarine mammals include toothed and baleen whales, as well as seals, sea lions, sea cows, sea otters and polar bears. They are adapted to an aquatic life in oceanic, coastal and riverine habitats. They range in size from sea otters to blue whales.
Das, Krishna   +3 more
openaire   +1 more source

Marine mammal impacts in exploited ecosystems: would large scale culling benefit fisheries? [PDF]

open access: yesPLoS ONE, 2012
Competition between marine mammals and fisheries for marine resources-whether real or perceived-has become a major issue for several countries and in international fora.
Lyne Morissette   +2 more
doaj   +1 more source

MF-HER: Marine Mammal-Friendly Based High Spectral-Efficient Routing for Underwater Acoustic Sensor Networks

open access: yesIEEE Access, 2020
In real ocean environments, artificial acoustic and natural acoustic systems are coexisted to share scarce spectrum resources. In this paper, we propose a marine mammals-friendly based high spectral-efficient routing (MF-HER) protocol to improve spectrum
Yougan Chen   +4 more
doaj   +1 more source

Osmoregulation in Marine Mammals [PDF]

open access: yesJournal of Experimental Biology, 2001
SUMMARY Osmoregulation in marine mammals has been investigated for over a century; however, a review of recent advances in our understanding of water and electrolyte balance and of renal function in marine mammals is warranted. The following topics are discussed: (i) kidney structure and urine concentrating ability, (ii) sources of water,
openaire   +2 more sources

Microflora of the polar bear (Ursus maritimus) from natural population of the Russian Arctic [PDF]

open access: yesE3S Web of Conferences, 2021
The paper presents the results of studying the microflora of the polar bear (Ursus maritimus) organism. Samples from 22 individuals were collected during three comprehensive scientific expeditions arranged in 2014 and 2015 at the request of PJSC Rosneft ...
Denisenko Tatyana   +2 more
doaj   +1 more source

Examining the Role of Marine Mammals and Seabirds in Southeast Alaska’s Marine Ecosystem Dynamics

open access: yesFrontiers in Marine Science, 2021
Primary producers are the foundation of marine food webs and require reliable nutrient sources to maintain their important role with ecosystems. While marine mammals and seabirds can play critical roles in marine nutrient cycling, their contributions are
Melissa Rhodes-Reese   +7 more
doaj   +1 more source

Efficacy of bear spray as a deterrent against polar bears

open access: yesWildlife Society Bulletin, 2023
Although there have been few attempts to systematically analyze information on the use of deterrents on polar bears (Ursus maritimus), understanding their effectiveness in mitigating human‐polar bear conflicts is critical to ensuring both human safety ...
James M. Wilder   +5 more
doaj   +1 more source

By-catch of common minke whales (Balaenoptera acutorostrata) in Norwegian demersal trawl and longline fisheries, 2011–2020

open access: yesNAMMCO Scientific Publications
The Norwegian High Seas Reference Fleet (HSRF) reported one minke whale (Balaenoptera acutorostrata) by-caught in demersal trawl fisheries and one in a longline in the period 2011–2020.
André Moan, Arne Bjørge
doaj   +1 more source

Diffusion modeling reveals effects of multiple release sites and human activity on a recolonizing apex predator

open access: yesMovement Ecology, 2021
Background Reintroducing predators is a promising conservation tool to help remedy human-caused ecosystem changes. However, the growth and spread of a reintroduced population is a spatiotemporal process that is driven by a suite of factors, such as ...
Joseph M. Eisaguirre   +7 more
doaj   +1 more source

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