David Pollard

David Pollard
Australian Museum · Ichthyology

BSc (Hons), PhD

About

77
Publications
20,009
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3,399
Citations
Citations since 2016
11 Research Items
957 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Introduction
Dr David Pollard is a Research Associate with the Department of Ichthyology at the Australian Museum in Sydney. He is primarily a fish ecologist, and his current research work is concentrated on the ecological assessment of threatened marine fishes. His most current project is in relation to the Red Listing of threatened grouper species for the IUCN's Species Survival Commission.

Publications

Publications (77)
Article
Full-text available
Among threats to marine species, overfishing has often been highlighted as a major contributor to population declines and yet fishing effort has increased globally over the past decade. This paper discusses the decadal reassessment of groupers (family Epinephelidae), an important and valuable group of marine fishes subjected to high market demand a...
Article
Full-text available
Epinephelus marginatus is a widely distributed species that inhabits rocky reef habitat. Its globalpopulation is comprised of at least four mostly separated subpopulations. It has been heavily targetedby recreational and commercial fishers, especially in the European/Mediterranean portion of its range,for hundreds of years. As a result, its populat...
Article
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This nearshore, rocky reef species has a restricted range, and occurs only in the four island archipelagos of Macaronesia. It is naturally rare in the northern part of its range, and more common to the south. Declines have occurred in the Azores and the Canary Islands due to overfishing. Heavy targeting of aggregations has resulted in significant d...
Article
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https://www.iucnredlist.org/species/132796/100463319
Article
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https://www.iucnredlist.org/species/132828/100570068
Article
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https://www.iucnredlist.org/species/14054/42691814
Article
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https://www.iucnredlist.org/species/132762/100464786
Article
Identification, understanding and prediction of the factors that drive species to heightened risk of extinction are important goals for conservation, especially since few areas on the planet remain unaffected by human activities. Global extinction risk assessments of an entire family of ecologically complex marine fishes (family: Sparidae), using t...
Technical Report
Full-text available
Aim | The European Red List is a review of the conservation status of European species according to IUCN regional Red Listing guidelines. It identifies those species that are threatened with extinction at the regional level, so that appropriate conservation action can be taken to improve their status. This Red List publication summarises results fo...
Technical Report
Full-text available
Aim | The European Red List is a review of the conservation status of European species according to IUCN regional Red Listing guidelines. It identifies those species that are threatened with extinction at the regional level, so that appropriate conservation action can be taken to improve their status. This Red List publication summarises results fo...
Article
https://www.iucnredlist.org/species/198630/15534027
Article
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https://www.iucnredlist.org/species/185146/1771952
Technical Report
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IUCN Threatened Species Assessment
Article
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Groupers are a valuable fishery resource of reef ecosystems and are among those species most vulnerable to fishing pressure because of life history characteristics including longevity, late sexual maturation and aggregation spawning. Despite their economic importance, few grouper fisheries are regularly monitored or managed at the species level, an...
Article
Full-text available
https://www.iucnredlist.org/species/190710/17796845
Book
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Executive summary Aim This report reviews the conservation status of all native marine fishes occurring in the Mediterranean Sea, based on the assessments for 513 species and 6 subspecies using the IUCN’s Red List methodology. It identifies those marine fish species that are threatened with extinction at the regional level so that appropriate conse...
Data
Full-text available
Provincial Bioregions of the Australian Marine Territories
Article
1. We present in this review a general description of marine protected areas (MPAs) in the northwestern Mediterranean and some general principles for the establishment of protected areas, including their size, location, biotope composition, regulation, and management. 2. Many Mediterranean MPAs are located around or adjacent to islands, but the pla...
Article
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This paper provides a synthesis of the current literature on the potential of marine protected areas (MPAs) as a management tool to limit the ecosystem effects of fishing, including biological and socio-economic perspectives. There is sufficient evidence to show that fishing can indeed negatively impact ecosystems. Modelling and case studies show t...
Book
Full-text available
This report documents the development of IMCRA and discusses how it may be used as a regional planning framework for conservation and sustainable resource use in coastal and marine environments. Several caveats and conditions are presented to assist users identify appropriate uses. IMCRA has been developed through the collaborative efforts of State...
Technical Report
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Article
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In the state of New South Wales, southeastern Australia, fishing is one of the most popular recreational activities in coastal and freshwater environments. Although a wide variety of fish, crustaceans, molluscs, other invertebrates and algae are exploited by fishers for sport, food and bait, there is little quantitative information on the catches,...
Article
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1. This paper summarizes aspects of the biology and conservation of the grey nurse shark (Carcharias taurus) in south-eastern Australian waters. This species has been a totally protected species in the State of New South Wales since 1984 and, as far as is known, was the first protected shark in the world. 2. Aspects discussed include systematics an...
Article
Abstract Quantitative electric fishing and multiple mesh-size gillnetting of fish communities in the Hawkesbury-Nepean River system, near Sydney, were carried out upstream of, within and well below each of three major points of treated sewage effluent discharge. Approximately half of the fish sampled were caught by electric fishing, comprising 515...
Article
The fish assemblages inhabiting two intermittently open coastal lagoons and one permanently open coastal lagoon on the mid south coast of New South Wales were studied over several years during the mid to late 1980s. Fish were sampled either monthly or bimonthly using rotenone ichthyocide and beam trawls (in shallow vegetated habitats), beach seines...
Article
This paper summarizes artificial reef developments in Australia since the mid 1980's. Seven artificial reefs, each consisting of about 900 tetrahedron module units constructed from discarded motor vehicle tires, have been placed in South Australian waters since 1984 to enhance primary production of colonizing organisms and to enhance catches of fis...
Article
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The effects of flood mitigation structures on the quality of estuarine and freshwater fish habitats in the lower Clarence River system of south-eastern Australia were investigated. Surrounding land use, fringing vegetation, overall level of habitat disturbance, distance from the sea, salinity, and water temperature were examined and compared betwee...
Article
Considering the size of the continent, the Australian freshwater fish fauna is a relatively depauperate one, comprising only about 192 species (belonging to 34 families) which spend significant portions of their life cycles in freshwater habitats. Of these freshwater species, the latest (1989) analysis indicates that six can be classified as endang...
Article
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The occurence of exotic marine invertebrates and algae in the Australian region is reviewed, with particular emphasis being placed on those species which might have significant ecological impacts on endemic biota and/or their habitats or on fisheries in this region. All marine and estuarine invertebrates and algae known or thought to have been intr...
Article
The occurrence of exotic marine fishes introduced to the Australian region is reviewed, with particular emphasis being placed on those species which might have significant ecological impact on endemic biota and/or their habitats or on fisheries in this region. All marine and estuarine fishes known or thought to have been introduced. either delibera...
Article
Competitors in spearfishing competitions in New South Wales, Australia, are permitted to “weigh in” only one individual per species of fish. Points are allocated to each fish on the basis of its weight, its availability and the degree of skill needed to capture it. The catch from such competitions consists mainly of permanently or intermittently re...
Article
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Four species of whiting (Family Sillaginidae) were collected from Botany Bay, New South Wales, between 1977 and 1979: Sillago ciliata (sand whiting), S. maculata maculata (trumpeter whiting), S. robusta (stout whiting) and S. bassensis flindersi (eastern school whiting). Sillago ciliata was the most abundant species over-all. Sillago ciliata was ca...
Chapter
Based on information available in both the overseas and Australian literature on threats to indigenous freshwater fish faunae from both habitat modification and the introduction of alien fish species, a hypothetical scenario is presented that describes what the Australian freshwater fish fauna may be like around the year 2000 under circumstances of...
Article
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The fish communities occupying a natural reef site and an artificial reef site near the mouth of Botany Bay, a marine-dominated estuary in southeastern Australia, were assessed by a diver transect method bimonthly over a two-year period. Temporal and spatial differences in community structure were analyzed. One hundred and two fish species from 50...
Article
The paper presented discusses developments from the mid 1960's to the present in the construction and siting of artificial reefs, and more recently midwater fish aggregation devices (FADs), in the six Australian states and New Zealand. The successes, and failures, experienced with various construction materials and methods in different types of mar...
Article
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We describe the training of divers to recognise and remove bias in estimating lengths of fish underwater. Divers were asked to allocate objects, from a population (N=50) with a known length frequency distribution, to ten 100 mm size classes. Observed and expected distributions were then compared and the divers informed of their errors. Training con...
Article
The fish community present in a 400-m2 area of seagrass meadow dominated by Posidonia australis Hook f. was quantitatively sampled during two springs and two autumns by enclosure and poisoning with rotenone. Thirty-nine species were collected and these were classified into permanent residents (∼ 50% of total numbers), temporary residents (∼ 30%) an...
Article
This paper reviews studies on various aspects of the ecology of fishes inhabiting seagrass (particularly Zostera, Posidonia, Thalassia and Halodule) habitats in different geographical areas throughout the world, with special emphasis on studies carried out during the past decade in Australia and other areas of the Indo-Pacific region. The main aspe...
Article
The structure of fish communities inhabiting separate meadows of the seagrasses Zostera capricorni Aschers. and Posidonia australis Hook f. in Botany Bay, central New South Wales, was studied over a 2-year period using a number of community parameters. The heterogeneity, species richness and total abundance of fishes were not found to be significan...
Article
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Fish belonging to 46 species and 24 families were collected; 6 species dominated the assemblage and another 6 were relatively common; 14 species, including 4 of the above, were economically important. These fishes made up 38% of individuals and 32% of biomass and were represented only by small juveniles. Nineteen species (41%) were temporary reside...
Article
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Three species of leatherjackets, Monacanthus chinensis, Meuschenia freycineti and Meuschenia trachylepis, averaged 34% of the total biomass and 27% of the total numbers of fishes in a Posidonia australis seagrass habitat near Sydney. Monacanthus chinensis was dominant, comprising 22% of the total biomass and 18% of the total numbers in this fish co...
Article
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Examination of the stomach contents of 153 predominantly sub-adult (modal standard length c. 40 mm) fortescues, C. australis, collected from an estuarine Posidonia aulstralis seagrass meadow near Sydney showed that these fish were macrophagic carnivores. Crustaceans (mainly grapsid crabs and penaeid and carid shrimps) made up 90% of the diet by est...
Article
Changes in the gross morphology and histological structure of the gonads of a landlocked form of Galaxias maculatus inhabiting Lake Modewarre, south-western Victoria, are described in relation to the seasonal pattern of gonadal maturation outlined in a previous paper on the life history of this fish. Macroscopic changes in the gross morphology of t...
Article
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Confusion has arisen over the nomenclature of certain fish of the family Centracanthidia, because of the colour variations due to sexual dichromatism, sexual inversions, protogynous hermaphroditism, and seasonal modifications according to the stage of maturity. A historical survey of nomenclature is presented for species described under the genera...
Article
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Over the course of the last 20 years, new techniques such as electrophoresis have made it possible to approach the detailed study of proteins; they have found many applications in research on taxonomy. The specificity of serum protein electrophoregrammes, in particular, has been noted by a large number of authors. Nonetheless, the value of serum el...

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Projects (10)