Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Alan R. Longhurst"'
Autor:
Alan R. Longhurst
This book presents an in-depth discussion of the biological and ecological geography of the oceans. It synthesizes locally restricted studies of the ocean to generate a global geography of the vast marine world.Based on patterns of algal ecology, the
Autor:
Gabriel Reygondeau, Olivier Maury, Alan R. Longhurst, David Antoine, Elodie Martinez, Grégory Beaugrand
Publikováno v:
Global Biogeochemical Cycles. 27:1046-1058
[1] In recent decades, it has been found useful to partition the pelagic environment using the concept of biogeochemical provinces, or BGCPs, within each of which it is assumed that environmental conditions are distinguishable and unique at global sc
Autor:
Alan R. Longhurst
Publikováno v:
Fisheries Research. 86:1-5
A recent article discusses the consequences for fisheries of the relationship between taxonomic diversity, productivity and the resistance of marine ecosystems to disturbance; this study is based on an examination of historical catch and abundance da
Autor:
Alan R. Longhurst
Publikováno v:
Fisheries Research. 81:107-112
Fishery science, by which I mean the study of the dynamics f exploited fish stocks, may be unique among the scientific isciplines: it produced a corpus of theory that was taught in niversities and applied at sea, but which has since proved to be rong
Autor:
Alan R. Longhurst
Publikováno v:
Fisheries Research. 61:1-6
Two new volumes on the large marine ecosystems (LMEs) of the North Atlantic and the Gulf of Guinea invite reflection on the concept of LMEs themselves. The concept has been taken up by international agencies with enthusiasm as conforming to their pra
Autor:
Alan R. Longhurst
Publikováno v:
Fisheries Research. 56:125-131
Most fisheries selectively remove larger, older individuals from the pristine stock, thus, truncating its natural pyramid of age classes and reducing its natural and characteristic longevity. Theoretically, this may lead to a reduction in its fitness
Autor:
Javier Arístegui, D.D. Sameoto, Alan R. Longhurst, Erica J. H. Head, W. G. Harrison, William K. W. Li
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 48:2241-2269
Three trans-Atlantic oceanographic surveys (Nova Scotia to Canary Islands) were carried out during fall 1992 and spring 1993 to describe the large-scale variability in hydrographic, chemical and biological properties of the upper water column of the
Autor:
Alan R. Longhurst
Publikováno v:
Fisheries Research. 41:111-117
It is paradoxical that the taxonomic composition and diversity of the benthic infauna of continental shelves is similar from tropical to polar seas, while the associated demersal fish communities are less diverse and taxonomically different at high l
Autor:
Alan R. Longhurst
Publikováno v:
Fisheries Research. 40:1-5
Two recent books suggest that North American fishery scientists collectively do not understand the complex web of conflicting interests which led to the collapse of the NW Atlantic demersal fisheries. More disturbingly yet, the same collective does n
Autor:
Alan R. Longhurst
Publikováno v:
Fisheries Research. 38:101-108
Yellowfin tuna may sustain an industrial fishery indefinitely if managed by conventional models, but northern cod perhaps cannot. This may be a generality for tropical and cold-water fish. In their core habitat, yellowfin spawn continuously, year-rou