This record is derived from DEC Marine Policy Branch Endnote library and spatially referenced SIER Database.

Comparative distribution of macromolluscs and macrocrustaceans in a north-western Australian mangrove system.

Eight scientific staff of the Western Australian and Northern Territory Museums completed a survey of 37 marine, five freshwater and two terrestrial stations in the Kimberley region of Western Australia. Habitats were sampled for a variety of invertebrate taxa and for fish. This report includes species inventories for most of the taxa sampled. More than 170 species of hard corals, 82 species of echinoderms, 317 species of molluscs, 139 species of decapod crustaceans, 49 species of barnacles, 67 species and higher taxa of polychaete worms and 324 species of fishes were recorded. The Kimberley has quite a high diversity of marine habitats which are dominated by the effects of strong tidal currents and high turbidity resulting in a relatively low faunal diversity. Comments are included on future management options for Kimberley marine ecosystems.

This report describes the results of the third and final expedition to the Kimberley to document the marine flora and fauna of the area. The expedition took place in November-December 1996 with the assistance of a grant from the National Estates Grant Program. Twenty-four stations were examined. Detailed notes are presented on the station locations and habitat types present. At each station algae, seagrasses, molluscs, fish, crustacea and corals were collected and notes were made on the few mangroves observed in this area. 3.Five areas of particular significance were found. These were: - Station 5, Hedley Island - coral pools, fish, algae and general diversity. - Station 11, Low Water, East Montelivet - extensive coral/coralline reef flat with high diversity coral cover. Large pools, with spectacular coral cover and fish. - Station 13, East side, Cassini Island - geomorphology and coral cover. Station 21, Wild Cat Reefs, eastern reef, west side - high algal diversity. - Station 22, The Breakwater, Montgomery Reef - special reef. This report provides an extensive section outlining the coastal geomorphology of the central Kimberley. There have been no published records of the marine algae which occur in the Kimberley. This report provides details of ca. seventy species collected during the expedition. Coralline algae are poorly known and species in this group are currently being worked on taxonomically. One hundred and forty four species of scleractinian corals, 292 species of molluscs, 89 species of non-caridean decapod crustaceans and 80 species of caridean shrimps, 228 species of fish and 19 barnacles were recorded. Potentially new species were found in several groups. The taxonomy of many of the groups collected is poorly known. Material was obtained for specialists in particular groups in Australia and overseas. The material has been sorted and sent to the specialists for examination and determination of species. This work is complex and time consuming, so it has not been possible to provide identifications for this report. However, the material is currently being worked up and will be presented in the scientific literature when it has been completed.

Mangroves are considered to support rich assemblages of fish and invertebrates. Fishes inhabiting mangrove habitats and at various distances from mangroves across mudflats were sampled to: (1) compare fish assemblages between habitats; and (2) determine the influence of mangrove proximity on fish abundance and diversity in three southern Australian estuaries between November 2005 and January 2006. Based on their distribution, fish species were classified as mangrove residents, mudflat residents, generalists or rare species. The assemblage structure of fish in mangroves differed from assemblages 500m away; however, neither total abundance nor species richness differed significantly between mangroves and mudflats. Mangrove residents and Aldrichetta forsteri (yellow-eyed mullet) displayed strong associations with mangrove habitats, whereas mudflat residents were associated with mudflat habitats. No other fish groups or individual species occurred in higher abundances in either habitat. Total fish abundance, mangrove residents and A. forsteri were positively correlated with pneumatophore density, indicating that the structural complexity of the mangroves might influence the distributions of certain fish species. The current study demonstrated that mangrove habitats in temperate Australia support no greater abundance or diversity of fish than adjacent mudflat habitats and that mangrove proximity does not influence fish distribution at a habitat scale.

This report describes the results of the first of three expeditions planned to the Kimberley to document the marine flora and fauna of the area. The expedition took place in November 1994 with the assistance of a grant from the National Estates Grant Program.Twenty-two stations were examined. Detailed notes are presented on the station locations and habitat types present. At each station seagrasses, algae, fish, and some invertebrate groups were collected and notes were made on mangroves in the area.Three areas of particular significance were found: the intertidal seagrass beds in the area of Sunday and Tallon Islands, which are the largest known for the Kimberley region; an extensive intertidal system which surrounds Montgomery Island with an area greater than 400 square kilometres; and a hypersaline lagoon on Macleay Island. These areas are described and the reasons for their significance detailed.This report provides an extensive section outlining the coastal geomorphology of the southern Kimberley islands, emphasising the unique intertidal terraces which trap water at low tide and have allowed the development of the seagrass systems at Sunday and Tallon Islands.There have been no published records of the marine algae which occur in the Kimberley. This report provides details of 72 species collected during the expedition. Coralline algae are poorly known and species in this group are currently being worked on taxonomically. Two genera commonly found during the trip are provisionally considered to be undescribed and two species are new records for Western Australia. Eight species of seagrasses were recorded from a total of 15 stations; the number of known localities at which the most common species occurs has been trebled.Two hundred thirty-two species of molluscs, 173 crustaceans, 24 polychaetes,and 197 species of fish were recorded. Potentially new species were found in several groups. Detailed collections were made of additional groups such as echinoderms. The first collections from the Kimberley were obtained of groups such as isopods and nemerteans.The taxonomy of many of the groups collected is poorly known. Material was obtained for specialists in particular groups in Australia and overseas. The material has been sorted and sent to the specialists for examination and determination of species. This work is complex and time consuming, so it has not been possible to provide identifications for this report. However, the material is currently being worked up and will be presented in the scientific literature when it has been completed.

Mangroves are a globally important ecosystem subject to significant anthropogenic and climate impacts. Tidally submerged forests and those that occur in arid and semi-arid regions are particularly susceptible to sea level rise or are growing at the margins of their their ecophysiological limits. The spatial extent of these types of mangroves over broad scales are typically poorly documented as their structural and environmental characteristics make them difficult to detect using remote sensing models. This study utilised the entire Landsat 8 satellite collection between January 2014 and June 2021. A new cloud-based time-series method was used that accounts for tidal variance in detecting mangrove areas that are periodically inundated and have historically been difficult to detect with traditional remote sensing methods. A habitat area model was derived for remote North-western Australia and detected an additional 32% (76,048 hectares) of mangroves that were previously undocumented. The accuracy of the model was assessed within the distinct geomorphic zones of the region through visual validation from high-resolution imagery. See accompanying report for full methodology: Hickey, S.M.; Radford, B. Turning the Tide on Mapping Marginal Mangroves with Multi-Dimensional Space–Time Remote Sensing. Remote Sens. 2022, 14, x. https://doi.org/10.3390/rs14143365

Many studies compare utilization of different marine habitats by fish and decapod crustaceans; few compare multiple vegetated habitats, especially using the same sampling equipment. Fish and invertebrates in seagrass, mangrove, saltmarsh, and nonvegetated habitats were sampled during May–August (Austral winter) and December–January (Austral summer) in the Barker Inlet-Port River estuary, South Australia. Sampling was undertaken using pop nets in all habitats and seine nets in seagrass and nonvegetated areas. A total of 7,895 fish and invertebrates spanning 3 classes, 9 orders, and at least 23 families were collected. Only one fish species, Atherinosoma microstoma, was collected in all 4 habitats, 11 species were found in 3 habitats (mangroves, seagrass, and nonvegetated), and 13 species were only caught in seagrass and nonvegetated habitats. Seagrass generally supported the highest numbers of fish and invertebrates and had the greatest species richness. Saltmarsh was at the other extreme with 29 individuals caught from two species. Mangroves and nonvegetated habitats generally had more fish, invertebrates, and species than saltmarsh, but less than seagrass. Analyses of abundances of individual species generally showed an interaction between habitat and month indicating that the same patterns were not found through time in all habitats. All habitats supported distinct assemblages although seagrass and nonvegetated assemblages were similar in some months. The generality of these patterns requires further investigation at other estuaries. Loss of vegetated habitats, particularly seagrass, could result in loss of species richness and abundance, especially for organisms that were not found in other habitats. Although low abundances were found in saltmarsh and mangroves, species may use these habitats for varying reasons, such as spawning, and such use should not be ignored.

The Tasmanian Estuaries (South East) Marine Habitats 1:25,000 layer depicts marine habitats of nine estuaries (Bryans lagoon, Catamaran River, Cloudy Bay Lagoon, D'Entrecasteaux River, Great Swanport, Little Swanport, Pipeclay Lagoon, Pitt Water and Southport Lagoon) in the south east of Tasmania. The habitat types depicted in the dataset include rocky reef, sand, hard sand and seagrass. The data was collected from November 2004 to September 2005 by marine researchers at the Tasmanian Aquaculture and Fisheries Institute. The shallow waters of the estuaries enabled the use of aerial photography, including purpose flown aerial surveys, and satellite imagery as the primary data source. The habitats defined in the imagery were ground truthed in the field with underwater camera equipment, echo sounder data, and a Differential GPS unit. The dataset is intended for the use of fulfilling the coastal management objectives according to The Living Marine Resources Act 1995 and to support Natural Resource management priorities in the Southern NRM region of Tasmania.

To document the marine flora and fauna of the Kimberley region, and to make the information available to the public and scientific community. Survey focused on islands and reefs between Montgomery Island and Cassini Island. NOTE: survey boundary was not defined in report