Macroalgae exhibit diverse responses to human disturbances on coral reefs

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  • Sara Cannon
    University of British Columbia
  • Simon Donner
    University of British Columbia
  • Angela Liu
    University of British Columbia
  • Pedro Gonzalez Espinosa
    University of British Columbia
  • Andrew Baird
    James Cook University, Cairns
  • Julia Baum
    University of Victoria
  • Andrew Bauman
    Nova Southeastern University, FL
  • Maria Beger
    School of Geography, University of Leeds, UK
  • Cassandra Benkwitt
    Lancaster University
  • Matthew Birt
    Australian Institute of Marine Science
  • Yannick Chancerelle
    PSL Research University
  • Joshua Cinner
    James Cook University, Cairns
  • Nicole Crane
    One People One Reef, Santa Cruz, CA
  • Vianney Denis
    National Taipei University
  • Martial Depczynski
    Australian Institute of Marine Science
  • Nur Fadli
    Cabrillo College, Ca.
  • Douglas Fenner
    Coral Reef Consulting, Samoa
  • Christopher Fulton
    Australian Institute of Marine Science
  • Yimnang Golbuu
    Palau International Coral Reef Cente
  • Nicholas Graham
    Lancaster University
  • James Guest
    Institute for Health and Society, Newcastle University, Newcastle upon Tyne, UK.
  • Hugo Harrison
    James Cook University, Cairns
  • Jean-Paul Hobbs
    University of Queensland
  • Andrew Hoey
    James Cook University, Cairns
  • Thomas Holmes
    Marine Science Program, Australia
  • Peter Houk
    University of Guam Marine Laboratory, UOG Station, Mangilao, USA
  • Fraser Januchowski-Hartley
    Swansea University
  • Jamaluddin Jompa
    Hasanuddin University
  • Chao-Yang Kuo
    James Cook University, Cairns
  • Gino Valentino Limmon
    Pattimura University, Indonesia
  • Yuting Lin
    National Taipei University
  • Timothy McClanahan
    Global Marine Programs, NYC
  • Dominic Muenzel
    School of Geography, University of Leeds, UK
  • Michelle Paddack
    One People One Reef, Santa Cruz, CA
  • Serge Planes
    PSL Research University
  • Morgan Pratchett
    James Cook University, Cairns
  • Ben Radford
    Australian Institute of Marine Science
  • James Reimer
    University of Guam Marine Laboratory, UOG Station, Mangilao, USA
  • Zoe Richards
    Palau International Coral Reef Cente
  • Claire Ross
    Marine Science Program, Australia
  • John Rulmal Jr.
    One People One Reef, Santa Cruz, CA
  • Brigitte Sommer
    The University of Sydney
  • Gareth J. Williams
  • Shaun Wilson
    Marine Science Program, Australia
Scientists and managers rely on indicator taxa such as coral and macroalgal cover to evaluate the effects of human disturbance on coral reefs, often assuming a universally positive relationship between local human disturbance and macroalgae. Despite evidence that macroalgae respond to local stressors in diverse ways, there have been few efforts to evaluate relationships between
specific macroalgae taxa and local human-driven disturbance. Using genus-level monitoring data from 1,205 sites in the Indian and Pacific Oceans, we assess whether macroalgae percent cover correlates with local human disturbance while accounting for factors that could obscure or confound relationships. Assessing macroalgae at genus level revealed that no genera were positively correlated with all human disturbance metrics. Instead, we found relationships
between the division or genera of algae and specific human disturbances that were not detectable when pooling taxa into a single functional category, which is common to many analyses. The convention to use percent cover of macroalgae as an indication of local human disturbance therefore likely obscures signatures of local anthropogenic threats to reefs. Our limited understanding of relationships between human disturbance, macroalgae taxa, and their responses
to human disturbances impedes the ability to diagnose and respond appropriately to these threats.
Iaith wreiddiolSaesneg
Tudalennau (o-i)3318-3330
CyfnodolynGlobal Change Biology
Cyfrol29
Rhif y cyfnodolyn12
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 1 Meh 2023
Gweld graff cysylltiadau