نتایج جستجو برای: reef fishery
تعداد نتایج: 19157 فیلتر نتایج به سال:
Using bottom-trawl survey data to examine fishery resources in the Beibu Gulf, South China Sea, changes stock density, dominant species composition, mean trophic level, and fishing-in-balance index were comprehensively analyzed. The results show that density of declined gulf from 1961 2017. composition trawl surveys Gulf changed greatly 1961–1962 2016–2017 showed a shift bottom pelagic high-tro...
Marine protected areas (MPAs) are becoming a favoured management strategy for the conservation of marine biodiversity. We present an analysis of how fishery data from a trawl fishery in northern Australia can contribute to the process of developing a system of candidate MPAs. We investigate ways of using fishing grounds, bioregion and depth information as a means of classifying ecosystems, and ...
Management of wild fisheries resources requires accurate knowledge on which species are being routinely exploited, but it can be hard to identify fishes level, especially in speciose fish groups where colour patterns vary with age. Snappers the genus Lutjanus represent one such group, and as a result statistics fail capture species-level taxonomic information. This study employs DNA barcoding a...
Partially protected areas are now the dominant global form of spatial management aimed at preserving ecosystem integrity and managing human use. However, most evaluations their efficacy use only a narrow set conservation indicators that reflect fraction ways in which protection can succeed or fail. In this paper, we examine three case studies partially coral reef fishery systems to evaluate ben...
Living reef fishes are one of the most diverse vertebrate assemblages on Earth. Despite its prominence and ecological importance, the origins and assembly of the reef fish fauna is poorly described. A patchy fossil record suggests that the major colonization of reef habitats must have occurred in the Late Cretaceous and early Palaeogene, with the earliest known modern fossil coral reef fish ass...
Coral reef fishes are exploited without the knowledge of their sustainability and their possible effect in altering the community structure of a coral reef ecosystem. Alteration of the community structure could cause a decline in the health of coral reefs and its services. We documented the coral community structure, status of live corals and reef fish assemblages in Palk Bay at the reef fishin...
The recent advent of agent-based modeling (ABM) and the availability of software platforms for its implementation offer a powerful alternative to model the spatio-temporal behaviors of a fishery with the consideration of heterogeneity and interactivity. This paper describes a prototype agent-based fishery management model of Hawaii’s longline fishery. The model simulates the daily fishing activ...
A Sub-littoral mussel reefs harbours rich and diverse invertebrate communities. They utilize the reef complex as their habitat, rich feeding substrate and also as refuge from predation. Though the invertebrate diversity of the reefs is available, reports pertaining to their relation to dietary habit of reef fishes are lacking. A study was taken up at the sub-littoral mussel reefs occurring off ...
tables or diagrams may be reproduced for such purposes provided acknowledgment of the source is included. Major extracts or the entire document may not be reproduced by any process without the written permission of the Executive Director, ABARE. Foreword The southern shark fishery has shown signs of being overexploited and overcapitalised for a number of years. Despite the introduction of an in...
Globally, one quarter of shark and ray species are threatened with extinction due to overfishing. Effective conservation management can facilitate population recoveries. However, these efforts depend on robust data movement patterns stock structure, which lacking for many species, including the Critically Endangered soupfin Galeorhinus galeus, a circumglobal coastal-pelagic species. Using passi...
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