@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix xsd: . a dcat:Dataset ; dct:description """#Tranche 1: Project 1.5#\r \r ##The unsung heroes of our groundwater system – bacteria that remove contaminants and tiny invertebrates that keep the bacteria in balance – are helping researchers assess the health of freshwater ecosystems##\r \r Led by NIWA’s Dr Graham Fenwick and ESR’s Dr Louise Weaver, this ground-breaking research project sampled biofilm bacteria and invertebrates to evaluate measures of biodiversity and indicators of ecosystem health using traditional and genetic information.\r \r DNA profiling, led by Ian Hogg at Waikato University, was used to identify, differentiate and characterise invertebrate species that have adapted to living underground without sunlight. ESR characterised bacterial communities using DNA, and trialling eDNA approaches to measuring total groundwater biodiversity.\r \r The project team is also investigated changes in the biodiversity of groundwater bacteria and invertebrates across three regions – Nelson, Canterbury and Hawke’s Bay – seven catchments and varying land-use situations.\r \r By measuring and monitoring biodiversity and ecosystem resilience, this project contributed to BioHeritage’s goal of empowering New Zealanders so they feel inspired to protect our environment.""" ; dct:identifier "aa45b3d5-7161-4d4c-9cbd-5b82dcf5b4dd" ; dct:issued "2024-07-04T00:11:53.391267"^^xsd:dateTime ; dct:modified "2024-07-31T04:42:17.553966"^^xsd:dateTime ; dct:publisher ; dct:title "The Groundwater Biodiversity Project" ; dcat:distribution , . a dcat:Distribution ; dct:description """###Suitability of invertebrate data for assessing groundwater ecosystem health###\r \r **December 2019**\r \r **Greenwood M and Fenwick G. 2019. Suitability of invertebrate data for assessing groundwater ecosystem health. p 39**\r \r **ABSTRACT**\r \r The focus of New Zealand’s Biological Heritage National Science Challenge Project 1.5 was improving knowledge of groundwater invertebrate biodiversity, specifically the abundance and distributions of species. As part of this project, the suitability of the resulting invertebrate biodiversity data was assessed for developing indices of groundwater ecosystem health, similar to indices widely used for measuring and monitoring ecosystem health in surface water environments.""" ; dct:format "PDF" ; dct:issued "2024-07-04T00:29:38.930306"^^xsd:dateTime ; dct:modified "2024-07-04T00:29:38.930306"^^xsd:dateTime ; dct:title "REPORT: Assessing groundwater ecosystem health" ; dcat:accessURL ; dcat:byteSize 1117197.0 ; dcat:mediaType "application/pdf" . a dcat:Distribution ; dct:description """###Use of Sonication for Enhanced Sampling of Attached Microbes from Groundwater Systems###\r \r **February 2020**\r \r \r **Close M, Abraham P, Webber J, Cowey E, Humphries B, Fenwick G, Howard S, Huynh K, Grace T, Dupont PY, Weaver L. [Use of Sonication for Enhanced Sampling of Attached Microbes from Groundwater Systems](https://ngwa.onlinelibrary.wiley.com/doi/epdf/10.1111/gwat.12984). Ground Water 58(6): 901-912.**\r \r **ABSTRACT**\r \r The vast majority of microorganisms in aquifers live as biofilms on sediment surfaces, which presents significant challenges for sampling as only the suspended microbes will be sampled through normal pumping. The use of a down-well low frequency sonicator has been suggested as a method of detaching microbes from the biofilm and allowing rapid sampling of this community. We developed a portable, easy to use, low-frequency electric sonicator and evaluated its performance for a range of well depths (tested up to 42 m below ground level) and casing types. Three sonicators were characterized in laboratory experiments using a 1 m long tank filled with pea gravel. These included a commercially available pneumatic sonicator, a rotating flexible shaft sonicator, and the prototype electric sonicator. The electric sonicator detached between 56 and 74% of microbes grown on gravel-containing biobags at distances ranging between 2 and 50 cm from the sonicator. The field testing comprises of a total of 55 sampling events from 48 wells located in 4 regions throughout New Zealand. Pre- and post-sonication samples showed an average 33 times increase in bacterial counts. Microbial sequence data showed that the same classes are present in pre- and post-sonicated samples and only slight differences were seen in the proportions present. The sampling process was rapid and the significant increases in bacterial counts mean that microbial samples can be quickly obtained from wells, which permits more detailed analysis than previously possible.\r \r **KEYWORDS**\r \r Groundwater;\r New Zealand;\r Sonication;\r Water Wells""" ; dct:issued "2024-07-04T00:21:38.715874"^^xsd:dateTime ; dct:modified "2024-07-04T00:21:38.715874"^^xsd:dateTime ; dct:title "PAPER: Sonication for sampling of groundwater systems" ; dcat:accessURL . a foaf:Organization ; foaf:name "Challenge Inventory" .