Katharine T. Bigham

ORCID: 0000-0002-6370-7471
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About
Contact & Profiles
Research Areas
  • Marine Biology and Ecology Research
  • Methane Hydrates and Related Phenomena
  • Coral and Marine Ecosystems Studies
  • Geology and Paleoclimatology Research
  • Marine and fisheries research
  • Isotope Analysis in Ecology
  • Atmospheric and Environmental Gas Dynamics
  • Hydrocarbon exploration and reservoir analysis
  • Marine and coastal plant biology
  • Marine Bivalve and Aquaculture Studies
  • Ichthyology and Marine Biology
  • Scientific Computing and Data Management
  • Crustacean biology and ecology
  • Microbial Community Ecology and Physiology
  • Aquatic Invertebrate Ecology and Behavior
  • Identification and Quantification in Food
  • Geological Modeling and Analysis
  • Ocean Acidification Effects and Responses

National Institute of Water and Atmospheric Research
2020-2024

Victoria University of Wellington
2020-2024

University of Washington
2016

Kaikōura Canyon, offshore Aotearoa/New Zealand, is a hotspot for deep-sea benthic biology with globally high faunal abundance. The Mw7.8 earthquake in 2016 triggered severe disturbance that reshaped the canyon, evacuating an estimated 850 metric megatonnes of sedimentary material down canyon. Canyon habitat now recovering from this removal both seafloor substrate and associated organisms. We measured post-event macrofauna density together biomass sediment properties related these to infaunal...

10.1016/j.dsr.2024.104235 article EN cc-by Deep Sea Research Part I Oceanographic Research Papers 2024-01-15

Sediment density flows are large scale disturbances that can have dramatic impacts on seafloor animal communities in the deep sea. Seafloor imagery collected Kaikōura Canyon (New Zealand), before and after a sediment flow event included debris turbidity triggered by 2016 M w 7.8 Earthquake, shows recovery trajectory of community canyon head weeks, months, years following disturbance. The appears resilient to this event, with models estimating full within minimum 4.5–5.1 as long 12 years....

10.3389/fmars.2023.1180334 article EN cc-by Frontiers in Marine Science 2023-05-18

This paper describes the application of convolutional neural networks (CNNs) to identification and classification ten classes benthic macrofauna in high-resolution photomosaics captured on Pacific continental shelf by an ROV. Each photomosaic was previously hand-annotated with location each animal, providing a training set for machine learning algorithms. These annotations are used extract image patches around contact, resulting approximately 5000 samples, which supplemented randomly...

10.1109/oceans.2016.7761146 article EN 2016-09-01

Abstract. Turbidity flows – underwater avalanches are large-scale physical disturbances that believed to have profound and lasting impacts on benthic communities in the deep sea, with hypothesized effects both productivity diversity. In this review we summarize characteristics of turbidity mechanisms by which they influence deep-sea communities, as an immediate pulse-type disturbance through longer-term press-type impacts. Further, use data from occurred hundreds thousands years ago well...

10.5194/bg-18-1893-2021 article EN cc-by Biogeosciences 2021-03-18

Turbidity flows can transport massive amounts of sediment across large distances with dramatic, long-lasting impacts on deep-sea benthic communities. The 2016 M

10.7717/peerj.17367 article EN cc-by PeerJ 2024-06-25

Sediment density flows can transport massive amounts of sediment across large distances and have dramatic, long-lasting impacts on deep-sea benthic communities. A canyon-flushing event in Kaikōura Canyon, New Zealand, triggered by the 2016 Mw 7.8 Earthquake, which included significant submarine mass wasting, debris turbidity flows, provides an excellent opportunity to investigate effects this type large-scale natural disturbance The macrofauna community canyon was well characterised before...

10.1016/j.dsr.2023.104192 article EN cc-by Deep Sea Research Part I Oceanographic Research Papers 2023-11-14

Leading deep-sea research expeditions requires a breadth of training and experience, the opportunities for Early Career Researchers (ECRs) to obtain focused mentorship on expedition leadership are scarce. To address need in expeditionary science, Crustal Ocean Biosphere Research Accelerator (COBRA) launched 14-week virtual Master Class with both synchronous asynchronous components empower students skills tools successfully design, propose, execute oceanographic field research. The offered...

10.3389/fmars.2023.1223197 article EN cc-by Frontiers in Marine Science 2023-10-06

10.5670/oceanog.2018.119 article EN cc-by Oceanography 2018-02-09

Abstract. Turbidity flows – underwater avalanches are large-scale physical disturbances that believed to have profound and lasting impacts on benthic communities in the deep sea, with hypothesised effects both productivity diversity. In this review we summarize characteristics of turbidity mechanisms by which they influence sea communities, as an immediate pulse-type disturbance through longer term press-type impacts. Further, use data from occurred hundreds thousands years ago well three...

10.5194/bg-2020-359 article EN cc-by 2020-10-14
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