Data

Spotted Handfish (Brachionichthys hirsutus) - GPS Underwater Visual Census - 2014-2022 repeated population surveys (NESP MB A10; NESP MaC 1.23)

University of Tasmania, Australia
Lynch, Tim ; Stuart-Smith, Jemina ; Devine, Carlie ; McEnnulty, Felicity ; Wong, Lincoln
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
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The data describes the search effort (transect length, swathed area) and counts of handfish observed on each transect, including size measurements (total length) and depth records for each sighted fish.Maintenance and Update Frequency: annuallyStatement: Population surveys of spotted handfish (Brachionichthys hirsutus) were conducted during the non-breeding season (March – August) of 2014-2019. Surveys were conducted at 9 different location within the Derwent Estuary and 2 additional location in D'Entrecasteaux Channel. Data were collected using a variable length, GPS tracked underwater visual census method. Divers swam abreast approximately 0.5m-1m above the sediment to search for fish while towing a surface float with GPS housed onboard. The GPS tracked the position of the divers in real time and allowed extraction of spatial data post-hoc to determine searched distance to parameterise each transect. 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McEnnulty, F., & Wong, L. (2022). Spotted Handfish (Brachionichthys hirsutus) - GPS Underwater Visual Census - 2014-2022 repeated population surveys [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/6PYW-AK73&rft_rights=Data was sourced from the NESP Marine and Coastal Hub – the Marine and Coastal Hub is supported through funding from the Australian Government’s National Environmental Science Program (NESP), administered by the Department of Climate Change, Energy, the Environment and Water (DCCEEW).&rft_subject=biota&rft_subject=National Environmental Science Program (NESP) Marine and Coastal Hub&rft_subject=Brachionichthys hirsutus&rft_subject=diver&rft_subject=Abundance of biota&rft.type=dataset&rft.language=English Access the data
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Licence & Rights:

Open Licence view details
CC-BY

Creative Commons Attribution 4.0 International License
http://creativecommons.org/licenses/by/4.0/

This dataset is hosted by the Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, on behalf NESP Marine Biodiversity Hub A10 & NESP Marine and Coastal Hub Project 1.3.

Cite data as: Lynch, T., Stuart-Smith, J., Devine, C., McEnnulty, F., & Wong, L. (2022). Spotted Handfish (Brachionichthys hirsutus) - GPS Underwater Visual Census - 2014-2022 repeated population surveys [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/6PYW-AK73

Data was sourced from the NESP Marine and Coastal Hub – the Marine and Coastal Hub is supported through funding from the Australian Government’s National Environmental Science Program (NESP), administered by the Department of Climate Change, Energy, the Environment and Water (DCCEEW).

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Full description

Dive surveys were conducted in 2014 and the same sites resurveyed annually until 2022 (excluding 2021), to establish a baseline and monitor the status of the critically endangered spotted handfish (Brachionichthys hirsutus) population. This dataset is a summary of all surveys season 2014 to 2022 (excluding 2021) in which the 11 sites across the Derwent Estuary and D'Entrecasteaux Channel were assessed. The data describes the search effort (transect length, swathed area) and counts of handfish observed on each transect, including size measurements (total length) and depth records for each sighted fish.

Lineage

Maintenance and Update Frequency: annually
Statement: Population surveys of spotted handfish (Brachionichthys hirsutus) were conducted during the non-breeding season (March – August) of 2014-2019. Surveys were conducted at 9 different location within the Derwent Estuary and 2 additional location in D'Entrecasteaux Channel. Data were collected using a variable length, GPS tracked underwater visual census method. Divers swam abreast approximately 0.5m-1m above the sediment to search for fish while towing a surface float with GPS housed onboard. The GPS tracked the position of the divers in real time and allowed extraction of spatial data post-hoc to determine searched distance to parameterise each transect. When B. hirsutus were located along the transect a series of photographs were taken to record the time of the sighting for cross-referencing with GPS spatial logs to determine the location of each sighting. The total length of each fish was measured to the nearest millimetre using a ruler placed laterally adjacent to the fish.

Notes

Credit
The data collections described in this record are funded by the Australian Government Department of Climate Change, Energy, the Environment and Water (DCCEEW) through the NESP Marine and Coastal Hub and previously NESP Marine Biodiversity Hub. In addition to NESP (DCCEEW) funding, this project is matched by an equivalent amount of in-kind support and co-investment from project partners and collaborators.

Data time period: 2014-02-28 to 2022-11-03

This dataset is part of a larger collection

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text: uplimit=20; downlimit=2

Subjects
Abundance of biota | Brachionichthys hirsutus | National Environmental Science Program (NESP) Marine and Coastal Hub | biota | diver |

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Other Information
(DATA ACCESS - detailed Spotted Handfish surveys 2014 - 2022 [direct download])

url : https://geoserver.imas.utas.edu.au/geoserver/NESP/wfs?version=1.0.0&request=GetFeature&typeName=CSIRO_NESP_handfish_surveys&outputFormat=csv

(SUPPLEMENTARY DATA - Summary population statistics 1998 - 2019)

url : https://data.imas.utas.edu.au/attachments/51702b57-d4e4-4477-b199-b3485675f66c/HFSummary1998_2019.csv

MAP - Spotted Handfish surveys (NESP:CSIRO_NESP_handfish_surveys)

url : https://geoserver.imas.utas.edu.au/geoserver/NESP/wms

This OGC WFS service returns the data for download in subsettable CSV format. (CSIRO_NESP_handfish_surveys)

url : https://geoserver.imas.utas.edu.au/geoserver/NESP/wfs

Lynch, Tim; Green, Mark; Wong, Lincoln; Bessell, Tyson; Cooper, A. J.; Valentine, J; Barrett, Neville; Ross, Jeff; McEnnulty, Felicity; Foster, Scott. Assessment of conservations actions for the critically endangered spotted handfish (Brachionichthyidae), following curation of data collected by multiple investigators into a long-term time-series. Journal for Nature Conservation. 2022; 69(126237):1-12. doi:10.1016/j.jnc.2022.126237 (Associated Publication)

doi : https://doi.org/10.1016/j.jnc.2022.126237

Wong LSC, Lynch TP, Barrett NS, Wright JT, Green MA, Flynn DJH (2018) Local densities and habitat preference of the critically endangered spotted handfish (Brachionichthys hirsutus): Large scale field trial of GPS parameterised underwater visual census and diver attached camera. PLoS ONE 13(8): e0201518. doi:10.1371/journal.pone.0201518 (Associated Publication)

doi : https://doi.org/10.1371/journal.pone.0201518

Lynch, T., Green, M. & Davies, C. Diver-towed GPS to estimate densities of a critically endangered fish. Biological Conservation 191 (2015): 700-706. (Associated Publication)

doi : http://dx.doi.org/10.1016/j.biocon.2015.08.009

Lynch, Tim; Green, Mark; Davies, Claire. Diver towed GPS increases both statistical power to estimate densities and functionality to observe behaviours of sparsely distributed spotted handfish (Brachionichthys hirsutus, Lacépède 1804). Biological Conservation. 2015; 191(1 1):700-706. doi:102.100.100/91758 (Associated Publication)

doi : https://doi.org/102.100.100/91758

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NESP MB Project A10 - Conservation of handfish and their habitat, 2016-2020 (IMAS, CSIRO)

doi : 10.71676/4c5a22bb

NESP MaC Project 1.23 - Conservation of spotted handfish, 2021-2022 (CSIRO)

doi : 10.71676/75cb5cc4

Identifiers