Results 51 to 60 of about 4,619 (193)

Design and Implementation of a Novel Polarimetric Active Radar Calibrator for Gaofen-3 SAR

Sensors, 2018
The Chinese first fully polarimetric space-borne synthetic aperture radar (SAR)-Gaofen-3 (GF-3) was launched in August 2016, which operates at the C-band and the resolution can reach 1 m.
Liang Li, Yongtao Zhu, Jun Hong, Feng Ming, Yu Wang   +4 more
doaj   +1 more source

Residency and Space Use of Endangered Smoothhound Sharks (Mustelus mustelus) in Relation to Marine Protection and Demersal Longline Fishing Along South Africa's South Coast

Fisheries Management and Ecology, EarlyView.
ABSTRACT Shark populations are declining globally and the effectiveness of marine protected areas (MPAs) as a conservation tool may vary by species and environmental context. This study assessed space use and residency of smoothhound sharks (Mustelus mustelus)—an endangered, yet highly exploited shark—in relation to spatial protection and fishing risk ...
Eugin Bornman, Taryn S. Murray, Neil Hammerschlag, Enrico Gennari   +3 more
wiley   +1 more source

Absolute Calibration of the European Sentinel-3A Surface Topography Mission over the Permanent Facility for Altimetry Calibration in west Crete, Greece

Remote Sensing, 2018
This work presents calibration results for the altimeter of Sentinel-3A Surface Topography Mission as determined at the Permanent Facility for Altimetry Calibration in west Crete, Greece. The facility has been providing calibration services for more than
Stelios Mertikas, Craig Donlon, Pierre Féménias, Constantin Mavrocordatos, Demitris Galanakis, Achilles Tripolitsiotis, Xenophon Frantzis, Costas Kokolakis, Ilias N. Tziavos, George Vergos, Thierry Guinle   +10 more
doaj   +1 more source

Do the biological characteristics of trout (Salmo trutta) smolts influence their spring migration timing and maiden marine sojourn duration?

Journal of Fish Biology, EarlyView.
Abstract Anadromous salmonids migrate seaward to exploit feeding and growth opportunities in marine habitats, yet how smolt biological characteristics influence their marine migratory behavior remains poorly understood. This study used 9 years of trout (Salmo trutta) population monitoring data from 15,595 tagged age‐0+ parr, 1033 smolts detected ...
Jonathan P. Gillson, Robert E. Blackwell, Stephen D. Gregory, Jessica E. Marsh, Tea Bašić, Sophie A. M. Elliott, R. Andrew King, David L. Maxwell, William D. Riley, Jamie R. Stevens, Alan M. Walker, Rasmus B. Lauridsen   +11 more
wiley   +1 more source

Prolonged lake use in Atlantic salmon juveniles prior to seaward migration is associated with higher apparent mortality and faster estimated growth

Journal of Fish Biology, EarlyView.
Abstract Lakes can present both risks and opportunities for migratory fishes, yet their role in the life histories of anadromous salmonids remains understudied. Here, we used Passive Integrated Transponder (PIT) telemetry to examine lake‐use patterns and their associations with survival and growth in juvenile Atlantic salmon Salmo salar L. over 3 years
Thomas E. Reed, Ross Finlay, Joshka Kaufmann, Karl P. Phillips, Philip McGinnity, Russell Poole   +5 more
wiley   +1 more source

Avaliação do uso de identificadores eletrônicos em suínos Evaluating the use of electronic identification in swine

Engenharia Agrícola, 2006
O mercado consumidor, atualmente, exige aumento gradativo do controle da qualidade dos produtos. Os métodos manuais de controle existentes, aplicáveis à produção animal, começam a se mostrar ineficientes para garantir percentual crescente dessa qualidade,
Késia O. da Silva, Irenilza de A. Nääs   +1 more
doaj   +1 more source

Effect of Foetal Bovine Serum in Oil‐Adjuvanted Vaccines on Spinal Deformities and Growth in Atlantic Salmon (Salmo salar)

Journal of Fish Diseases, EarlyView.
ABSTRACT Numerous studies have shown that oil‐adjuvanted vaccines (OAV) can induce a variety of different side effects in Atlantic salmon including spinal deformities (SD). Of these, a pathology first described in 2020 and named cross‐stitch vertebrae has been associated with the use of inactivated salmonid alphavirus (SAV) vaccines. Historically, most
Ragnar Thorarinsson, Tom Hansen, Ole Høstmark, Ann Cathrine Einen, Kjartan Hodneland, Stephane Villoing, Petter Frost, Helena Midtbø, Rodrigo Belmonte da Silva   +8 more
wiley   +1 more source

Local Versus Allopatric Parasites: Acanthocephalans From Different Watersheds Are Associated With Different Infection Strategies in Definitive Host

Journal of Zoology, EarlyView.
Gammarus pulex infected by Pomphorhynchus laevis at the cystacanth larval stage. We investigated whether geographic origin influences infection success of the acanthocephalan Pomphorhynchus laevis across its complex life cycle. Parasites from different watersheds showed strong differences in infection success and virulence in intermediate hosts ...
Léa Lorrain‐Soligon, Alexandre Bauer, Thierry Rigaud, Jean‐Emmanuel Rollin, Simon Agostini, Beatriz Decencière, Alexis Millot, Aurélie Goutte   +7 more
wiley   +1 more source

Comparative Population Genetics and Dynamics in Two Populations of African Mole‐Rats

Journal of Zoology, EarlyView.
This study compares spatial genetics between two subspecies of Cryptomys hottentotus, namely the highveld (Cryptomys hottentotus pretoriae) and the Mahali mole‐rat (Cryptomys hottentotus mahali). Whereas Cryptomys hottentotus mahali exhibited shorter effective dispersal distances and reduced inbreeding than Cryptomys hottentotus pretoriae, both ...
Tobias Süess, Nigel C. Bennett, Kyle Finn, Andries K. Janse van Vuuren, Paulette Bloomer, Daniel W. Hart, Samantha Mynhardt   +6 more
wiley   +1 more source

Early results and lessons learned from biomanipulation and chemical restoration of a eutrophic shallow lake

Restoration Ecology, EarlyView.
Abstract Introduction Over 44% of European lakes fail to meet ecological quality standards, prompting substantial investment in lake restoration to achieve good ecological status. Unfortunately, effects are often short‐lived due to persistent internal phosphorus (P) loading and strong cyprinid‐driven bottom‐up control, which limits water quality ...
Emma Polauke, Kaj Sand‐Jensen, Christian Skov, Theis Kragh   +3 more
wiley   +1 more source