Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web

Marine and Coastal Fisheries

Pop-up satellite archival tags (n = 31) were deployed on Yellowfin Tuna Thunnus albacares in the Gulf of Mexico for periods ranging from 14 to 95 d. Differences in diel vertical behavior were assessed by comparing time spent at temperature relative to the surface temperature ( T). Pooled samples revealed that 31% of darkness hours, 20% of twilight hours, and 12% of daylight hours were spent in ...

Marine and Coastal Fisheries

—The ability of fish to submerge after discarding is often used as a proxy for survival, but this practice underestimates total discard mortality because delayed mortality is overlooked. Fishery managers need a way to link ‘‘sink or swim’’ indicators, or variables observed during capture and release, with delayed mortality rates. We conducted a cage study of red snapper Lutjanus campechanus off...

‘Fishing down marine food webs’ and spatial expansion of coastal fisheries in India, 1950–2000

The worldwide crisis of fisheries, which are usually managed on a single species basis, has led to calls for ‘ecosystem management’, along with he development of various ecosystem indicators. The Marine Trophic Index (MTI) and the related Fishing-in-Balance (FiB) index are two such ndicators, which can be used to draw inferences on the sustainability of fisheries, notably those targeting high-t...

Temperature can interact with landscape factors to affect songbird productivity.

Increased temperatures and more extreme weather patterns associated with global climate change can interact with other factors that regulate animal populations, but many climate change studies do not incorporate other threats to wildlife in their analyses. We used 20 years of nest-monitoring data from study sites across a gradient of habitat fragmentation in Missouri, USA, to investigate the re...

Comparative analysis of artisanal and recreational fisheries for Dentex dentex in a Marine Protected Area