Zobrazeno 1 - 10
of 413
pro vyhledávání: '"Mark A. Dixon"'
Autor:
Charles W. Helm, Andrew S. Carr, Hayley C. Cawthra, Jan C. De Vynck, Martin G. Lockley, Mark G. Dixon, Renee Rust, Willo Stear, Guy H.H. Thesen, Ferdi Van Berkel, Jan A. Venter
Publikováno v:
Koedoe: African Protected Area Conservation and Science, Vol 66, Iss 2, Pp e1-e12 (2024)
Aeolianites and cemented beach deposits on South Africa’s Cape coast preserve evidence of events that transpired on them when they were composed of unconsolidated sand. Over the past decades, numerous Pleistocene vertebrate tracksites have been ide
Externí odkaz:
https://doaj.org/article/3bd7e18acd9e4938974124075e9e4231
Autor:
Justine Sauvage, Gary H. Wikfors, Mark S. Dixon, Diane Kapareiko, Koen Sabbe, Xiaoxu Li, Alyssa Joyce
Publikováno v:
Journal of the World Aquaculture Society, Vol 53, Iss 6, Pp 1101-1119 (2022)
Abstract In laboratory and industrial cultivation of marine microalgae, it is customary to enrich cultures with macronutrients (N, P), chelated trace metals, and vitamins at ~104× concentrations found in nature to obtain high culture densities. Othe
Externí odkaz:
https://doaj.org/article/202f98f7c8cf4d7cba573bec55ad66b4
Autor:
Renee Mercaldo-Allen, Peter J. Auster, Paul Clark, Mark S. Dixon, Erick Estela, Yuan Liu, Lisa Milke, Gillian Phillips, Dylan Redman, Barry C. Smith, Alison Verkade, Julie M. Rose
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
Oyster aquaculture gear may augment natural seafloor by providing structured habitat for economically important fish species. Underwater video census was used to assess fish abundance and community composition on eastern oyster (Crassostrea virginica
Externí odkaz:
https://doaj.org/article/d846c2bf18654d638f21f03a4499d081
Publikováno v:
Avian Conservation and Ecology, Vol 18, Iss 2, p 9 (2023)
River regulation by dams on the Missouri River has modified riparian forest successional patterns, with decreases in early and increases in later seral stages and higher occurrence of invasive tree species, including Russian olive ( Elaeagnus angusti
Externí odkaz:
https://doaj.org/article/53c93b6e14ea4c7eb63644d1d6b91ca8
Autor:
Darien D. Mizuta, Gary H. Wikfors, Shannon L. Meseck, Yaqin Li, Mark S. Dixon, Hyun Jeong Lim, In Joon Hwang, Magalí Bazzano, Steven Pitchford
Publikováno v:
Aquaculture and Fisheries, Vol 6, Iss 1, Pp 75-83 (2021)
Ploidy manipulation, such as triploidy, in farmed oysters has been used as a tool to enhance oyster quality throughout all seasons because triploid oysters allocate less energy to gametogenesis, and therefore are deemed better performers than fertile
Externí odkaz:
https://doaj.org/article/99df1b62850a44f9ae861456f53d2849
Publikováno v:
Journal of Contextual Behavioral Science. 28:169-179
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e6982829d4973043a53eeb1d727a724
https://doi.org/10.1016/j.jcbs.2023.03.016
https://doi.org/10.1016/j.jcbs.2023.03.016
Autor:
Charles W. Helm, Hayley C. Cawthra, Richard M. Cowling, Jan C. De Vynck, Martin G. Lockley, Curtis W. Marean, Mark G. Dixon, Carina J.Z. Helm, Willo Stear, Guy H.H. Thesen, Jan A. Venter
Publikováno v:
Koedoe: African Protected Area Conservation and Science, Vol 63, Iss 1, Pp e1-e5 (2021)
Pleistocene aeolianite surfaces on the South African coastline, which occur in national parks, other protected areas, as well as unprotected areas, are of profound scientific, cultural, palaeoenvironmental and heritage importance. A threat is posed t
Externí odkaz:
https://doaj.org/article/0f666f176c2a4cd6902c5ed8e20adc58
Autor:
Charles W. Helm, Andrew S. Carr, Hayley C. Cawthra, Jan C. De Vynck, Mark G. Dixon, Pieter-Jan Gräbe, Guy H. H. Thesen, Jan A. Venter
Publikováno v:
Quaternary Research. :1-13
The giant Cape zebra (Equus capensis) is one of the extinct Quaternary large mammal species of southern Africa, and the largest equid from the Quaternary of Africa. Twenty-six Pleistocene equid tracksites have been identified in aeolianites on the Ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cc04b045225b717e84c15a4553e8be5
https://doi.org/10.1017/qua.2023.1
https://doi.org/10.1017/qua.2023.1
Autor:
Charles W. Helm, Martin G. Lockley, Hayley C. Cawthra, Jan C. De Vynck, Mark G. Dixon, Carina J.Z. Helm, Guy H.H. Thesen
Publikováno v:
South African Journal of Science, Vol 116, Iss 9/10 (2020)
Three new Pleistocene hominin tracksites have been identified on the Cape south coast of South Africa, one in the Garden Route National Park and two in the Goukamma Nature Reserve, probably dating to Marine Isotope Stage 5. As a result, southern Afri
Externí odkaz:
https://doaj.org/article/82967b5820da4f3389af363db2226fdd
Publikováno v:
International Aquatic Research, Vol 10, Iss 1, Pp 65-77 (2018)
Abstract The East River tidal strait, located between New York Harbor and Western Long Island Sound, is characterized by high suspended silt concentrations with low organic content kept in suspension by intense tidal currents. Inorganic nutrients, in
Externí odkaz:
https://doaj.org/article/699f451479414066b17bbd30542abf3b