Brief description
The Leschenault Estuary was divided into four regions; the apex, upper, middle and lower regions. Within each region four sites were sampled seasonally (except the middle region where there were four additional crab potting sites) over two years (total of 8 sampling occasions). At each site, sampling of fish was conducted using seine nets with length and weight of all collected fish measured. In addition, water temperature, salinity, dissolved oxygen were measured at each site. The aim of the study is to develop cost-effective strategies for monitoring the fish community.Lineage
Statement: Within each region there were four sites that were sampled seasonally over two years (total of 8 sampling occasions). The Leschenault Estuary was sampled using a 21.5m and 40.5m seine net. The 21.5m seine net was carried out into the water by two researchers. At a depth of approximately 1.5m the net was strung out parallel to the shoreline. The researchers at either end of the net walked in towards each other forming a circle shape with the net which was then dragged up onto the beach and emptied. The nets used to sample both estuaries are identical to those used in previous studies and thus allow for direct comparisons to be made between sampling periods. These methods are the most appropriate to obtain sound quantitative data on fish communities in this type of habitat and have been used extensively in other estuarine research in south-western Australia. At each sampling site on each sampling occasion the water temperature, salinity and dissolved oxygen content was recorded using a YSI 556 MPS temperature, salinity and conductivity meter. In the laboratory each sample was be sorted and each individual fish was identified to species level. Each individual of each species was measured to the nearest 1mm and, in the case where there are more than 50 fish for a species in a single sample only 50 fish were measured. The total weight of each species in each sample was recorded to the nearest 0.01 g.Created: 04 11 2008
text: westlimit=115.67; southlimit=-33.33; eastlimit=115.72; northlimit=-33.19; projection=EPSG:28350
Subjects
428005, Southern Longfin Goby, Favonigobius lateralis, 246002, Silver Fish, Leptatherina presbyteroides, 246010, Elongate Hardyhead, Atherinosoma elongata, 085005, Sandy Sprat, Hyperlophus vittatus, 467030, Weeping Toadfish, Torquigener pleurogramma, 911005, Blue Swimmer Crab, Portunus pelagicus, 381001, Yelloweye Mullet, Aldrichetta forsteri, 246011, Western Hardyhead, Leptatherina wallacei, 327040, Western Gobbleguts, Apogon rueppelli, 246026, Spotted Hardyhead, Craterocephalus mugiloides, 330001, King George Whiting, Sillaginodes punctata, 330012, Yellowfin Whiting, Sillago schomburgkii, 428009, Bluespot Goby, Pseudogobius olorum, 461007, Elongate Flounder, Ammotretis elongatus, 287018 ,Soldier, Gymnapistes mamoratus, 246007, Common Hardyhead, Atherinomorus vaigiensis, 282017, Spotted Pipefish, Stigmatopora argus, 465007, Rough Leatherjacket, Scobinichthys granulatus, 327032, Wood’s Siphonfish, Sipamia cephalotes, 381002, Sea Mullet, Mugil Cephalus, 349005, Common Silverbiddy, Gerres subfasciatus, 467044, Prickly Toadfish, Contusus brevicaudus, 353013, Tarwhine, Rhabdosargus sarba, 234001, Southern Garfish, Hyporhamphus melanochir, 330004, Western Trumpeter Whiting, Sillago burrus, 416007, Southern Crested Weedfish, Cristiceps australis, 428143, Southwestern Goby, Afurcagobius suppositus, 465036, Sixspine Leatherjacket, Meuschenia freycineti, 068001, Serpent Eel, Ophisurus serpens, 282008, Hairy Pipefish, Urocampus carinirostris, 361005, Stripey, Microcanthus strigatus, 460002, Smalltooth Flounder, Pseudorhombus jenynsii |
ANIMALS/VERTEBRATES |
AQUATIC ECOSYSTEMS |
BIOLOGICAL CLASSIFICATION |
BIOSPHERE |
COASTAL PROCESSES |
Conductivity |
Dissolved Gases |
EARTH SCIENCE |
ECOLOGICAL DYNAMICS |
Estuaries |
Estuarine Habitat |
Fish |
OCEANS |
Oxygen |
Population Dynamics |
SPECIES/POPULATION INTERACTIONS |
TERRESTRIAL HYDROSPHERE |
WATER QUALITY/WATER CHEMISTRY |
Water Temperature |
biota |
day |
environment |
mass_concentration_of_oxygen_in_sea_water |
method |
month |
sea_water_salinity |
sea_water_temperature |
site_code |
taxonomic_code |
total_body_length |
total_number |
total_weight |
year |
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Other Information
(Final_Leschenault_2008-2010_Raw_fish_data.xls)
Identifiers
- global : f80b550b-f41d-4404-80e8-a1bc3024ae56
