Výsledky vyhľadávania - "Elwen, S"

Changes in bottlenose dolphin whistle parameters related to vessel presence, surface behaviour and group composition Autor Heiler, J., Elwen, S.H., Kriesell, H.J., Gridley, T.

“…Cetacean watching from tour boats has increased in recent years and has been promoted as an ethically viable alternative to cetacean viewing in captive…”
Získať plný text

Entanglement of Cape fur seals (Arctocephalus pusillus pusillus) at colonies in central Namibia Autor Curtis, S., Elwen, S.H., Dreyer, N., Gridley, T.

“…Marine pollution is increasing, and pinnipeds are commonly affected by entanglement in waste. We investigated entanglement rates, common materials, and the…”
Získať plný text

Identification of potential signature whistles from free-ranging common dolphins (Delphinus delphis) in South Africa Autor Fearey, J., Elwen, S. H., James, B. S., Gridley, T.

“…Conveying identity is important for social animals to maintain individually based relationships. Communication of identity information relies on both signal…”
Získať plný text

Hybridization in bottlenose dolphins—A case study of Tursiops aduncus × T. truncatus hybrids and successful backcross hybridization events Autor Gridley, T., Elwen, S. H., Harris, G., Moore, D. M., Hoelzel, A. R., Lampen, F.

“…The bottlenose dolphin, genus Tursiops is one of the best studied of all the Cetacea with a minimum of two species widely recognised. Common bottlenose…”
Získať plný text

Case study: Evidence of long-term stability in a stereotyped whistle in a single free-ranging humpback dolphin ( Sousa plumbea ) found in sympatry ( Tursiops aduncus ) Autor Dines, S., Probert, R., Gullan, A., Elwen, S., Frainer, G., Gridley, T.

“…This 11-year case study describes the acoustic behaviour of a resident Indian Ocean humpback dolphin during commercial swim-with-dolphin activities in…”
Získať plný text

Fear at the top: killer whale predation drives white shark absence at South Africa's largest aggregation site Autor Towner, AV, Watson, RGA, Kock, AA, Papastamatiou, Y, Sturup, M, Gennari, E, Baker, K, Booth, T, Dicken, M, Chivell, W, Elwen, S, Kaschke, T, Edwards, D, Smale, MJ

“…Risk-induced fear effects exerted by top predators are pervasive in terrestrial and marine systems, with lasting impacts on ecosystem structure and function…”
Získať plný text

Hybridization in bottlenose dolphins-A case study of Tursiops aduncus x T. truncatus hybrids and successful backcross hybridization events Autor Gridley, T, Elwen, S. H, Harris, G, Moore, D. M, Hoelzel, A. R, Lampen, F

“…The bottlenose dolphin, genus Tursiops is one of the best studied of all the Cetacea with a minimum of two species widely recognised. Common bottlenose…”
Získať plný text

Prevalence and source of entanglements in Cape fur seals (Arctocephalus pusillus pusillus) in South Africa Autor Ramilo-Henry, M., Elwen, S.H., Barnes, A., Ward, V., Gridley, T.

“…Global pollution is increasing, and marine mammals are commonly affected by marine debris. This study combined data from multiple sources to help understand…”
Získať plný text

Song recorded near a super-group of humpback whales on a mid-latitude feeding ground off South Africa Autor Gridley, T, Silva, M F P, Wilkinson, C, Seakamela, S M, Elwen, S H

“…Humpback whales (Megaptera novaeangliae) are well known for their complex song which is culturally transmitted and produced by males. However, the function of…”
Zistit podrobnosti o prístupe

Singing in South Africa: monitoring the occurrence of humpback whale (Megaptera novaeangliae) song near the Western Cape Autor Ross-Marsh, E. C., Elwen, S. H., Prinsloo, A. S., James, B. S., Gridley, T.

“…Humpback whales (Megaptera novaeangliae) are highly vocal, producing a wide repertoire of sounds often organised into song. Song is prolific at breeding sites…”
Získať plný text

Detection of humpback whale ( Megaptera novaeangliae ) non-song vocalizations around the Vema Seamount, southeast Atlantic Ocean Autor Ross-Marsh, E. C., Elwen, S. H., Fearey, J., Thompson, K. F., Maack, T., Gridley, T.

“…Humpback whales are a cosmopolitan, highly vocal species. Investigated here are their vocalizations recorded at the Vema Seamount (31°38′S, 08°20′E) from…”
Získať plný text

The acoustic repertoire of wild common bottlenose dolphins (Tursiops truncatus) in Walvis Bay, Namibia Autor Gridley, T., Nastasi, A., Kriesell, H.J., Elwen, S.H.

“…Describing the repertoire of sounds produced by wild cetaceans is necessary for understanding their function, for acoustic population monitoring and for…”
Získať plný text

Epidemiology of lobomycosis-like disease in bottlenose dolphins Tursiops spp. from South America and southern Africa Autor Van Bressem, Marie-Françoise, Simões-Lopes, Paulo C, Félix, Fernando, Kiszka, Jeremy J, Daura-Jorge, Fabio G, Avila, Isabel C, Secchi, Eduardo R, Flach, Leonardo, Fruet, Pedro F, du Toit, Kate, Ott, Paulo H, Elwen, Simon, Di Giacomo, Amanda B, Wagner, Jeanne, Banks, Aaron, Van Waerebeek, Koen

“…We report on the epidemiology of lobomycosis-like disease (LLD), a cutaneous disorder evoking lobomycosis, in 658 common bottlenose dolphins Tursiops truncatus…”
Zistit podrobnosti o prístupe

South African marine citizen science - benefits, challenges and future directions Autor Potts, WM, Mann-Lang, JB, Mann, BQ, Griffiths, CL, Attwood, CG, de Blocq, AD, Elwen, SH, Nel, R, Sink, KJ, Thornycroft, R

“…South Africa has a long history of engagement in citizen science (CS), particularly marine CS. This review examines the contributions made by marine CS, from…”
Získať plný text

Abundance estimates of an isolated population of common bottlenose dolphins Tursiops truncatus in Walvis Bay, Namibia, 2008-2012 Autor Elwen, SH, Leeney, RH, Gridley, T

“…The coastal population of common bottlenose dolphins Tursiops truncatus found in Namibia is regionally isolated and unique. This population faces several…”
Získať plný text

Towed passive acoustic monitoring complements visual survey methods for Heaviside's dolphins Cephalorhynchus heavisidii in the Namibian Islands Marine Protected Area Autor Gridley, T, Martin, MJ, Slater, J, Roux, J-P, Swift, RJ, Elwen, SH

“…The genus Cephalorhynchus contains four dolphin species, of which three are classified as Near Threatened or Endangered and one subspecies is close to…”
Získať plný text

Pygmy right whale Caperea marginata records from Namibia Autor Leeney, RH, Post, K, Best, PB, Hazevoet, CJ, Elwen, SH

“…All known records of pygmy right whales Caperea marginata in Namibia since 1978 are summarised for the first time, including 12 strandings (live and recently…”
Získať plný text

Abundance and degree of residency of humpback dolphins Sousa plumbea in Mossel Bay, South Africa Autor James, BS, Bester, MN, Penry, GS, Gennari, E, Elwen, SH

“…Indian Ocean humpback dolphins Sousa plumbea inhabit nearshore waters from South Africa to eastern India. Humpback dolphins are vulnerable to conservation…”
Získať plný text

Records of kogiid whales in Namibia, including the first record of the dwarf sperm whale (Kogia sima) Autor Elwen, S.H., Gridley, T., Roux, J-P., Best, P.B., Smale, M.J.

“…Dwarf (Kogia sima) and pygmy (K. breviceps) sperm whales occur in pelagic waters around southern Africa. Here we report the first record of K. sima from…”
Získať plný text

Cetacean research in the southern African subregion: a review of previous studies and current knowledge Autor Elwen, SH, Findlay, KP, Kiszka, J, Weir, CR

“…Cetacean research, in terms of the number of papers, and areas for which data are available, has expanded considerably in the southern African subregion in the…”
Získať plný text