Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Travis D. Shepherd"'
Publikováno v:
Estuaries and Coasts. 30:567-574
We analyzed historic and current fishery independent data to determine if the abundance of two apex predators, bull sharks (Carcharhinus leucas) and alligator gar (Atractosteus spatula), in Lake Pontchartrain had changed significantly over the last h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae658c2ccd07974e785c9e22430e9bb6
https://doi.org/10.1007/bf02841954
https://doi.org/10.1007/bf02841954
Publikováno v:
Science. 315:1846-1850
Impacts of chronic overfishing are evident in population depletions worldwide, yet indirect ecosystem effects induced by predator removal from oceanic food webs remain unpredictable. As abundances of all 11 great sharks that consume other elasmobranc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f676ab754212cb58457f94a77216ab0
https://doi.org/10.1126/science.1138657
https://doi.org/10.1126/science.1138657
Autor:
Travis D. Shepherd, Ransom A. Myers
Publikováno v:
Ecology Letters. 8:1095-1104
Globally, bycatch in tropical/subtropical shrimp trawl and longline fisheries is threatening many marine species. Here we examine the joint effects of increased mortality caused by shrimp trawling bycatch, and reduced predation caused by losses of la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cfe3d8f28ad8ecfc4022054e2c1b94d
https://doi.org/10.1111/j.1461-0248.2005.00807.x
https://doi.org/10.1111/j.1461-0248.2005.00807.x
Autor:
Travis D. Shepherd, M. K. Litvak
Publikováno v:
Fish and Fisheries. 5:141-152
Current methods and theory used in the study of the spatial dynamics of marine fish are problematic. Positive relationships between population abundance and occupied area are typically interpreted as evidence of density-dependent habitat selection. H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27c2784e21a142878f4d335dbfaf49f5
https://doi.org/10.1111/j.1467-2979.2004.00143.x
https://doi.org/10.1111/j.1467-2979.2004.00143.x
Autor:
Debra L. Palka, Gary D. Melvin, Travis D. Shepherd, Norman L. Holy, John M. Terhune, Edward A. Trippel
Publikováno v:
Marine Mammal Science. 19:240-243
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2073de1e06b340216ebe0050eeaf0058
https://doi.org/10.1111/j.1748-7692.2003.tb01106.x
https://doi.org/10.1111/j.1748-7692.2003.tb01106.x
Publikováno v:
Fisheries Oceanography. 11:78-89
The associations between spiny dogfish (Squalus acanthias) and hydrographic variables (temperature, salinity and depth) were examined in the Bay of Fundy and Scotian Shelf from 1970 to 1998. Data were obtained from standard groundfish bottom trawl su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92545e1a2e5c946ba7dc07d8c09a7131
https://doi.org/10.1046/j.1365-2419.2002.00191.x
https://doi.org/10.1046/j.1365-2419.2002.00191.x